| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 455571000 | Power booster | 67 |
| 20080242367 | SPREAD SPECTRUM CELLULAR SUBSCRIBER UNIT - A spread spectrum base station comprises an automatic gain control (AGC) circuit having an input configured to receive a received spread spectrum signal and gain control the received spread spectrum signal to produce a gain controlled signal. A correlation circuit has an input configured to receive the gain controlled signal and correlate the gain controlled signal with a code to produce a despread signal. A power measurement and comparator circuit is configured to receive the despread signal and a control level of the AGC circuit. The circuit processes at least the despread signal and the control level to produce a processed signal and compares the processed signal with a threshold to produce a comparison signal. The comparison signal is used to produce a power command. A multiplexer multiplexes the power command with a signal for transmission over an antenna. | 10-02-2008 |
| 20090036171 | Efficient Storing of Backoff and Crestcomp Values - An efficient way to store backoff and crestcomp parameters while providing quick access to the backoff and crestcomp parameters associated with specific transmission configurations is described herein. A long-term memory stores amplifier parameters for a plurality of different transmission configurations. A selection element selects from the long-term memory a graph of the amplifier parameters corresponding to a selected subset of the transmission configurations. The selected graph relates each of a plurality of enhanced data channel gain ratios to a corresponding amplifier parameter. The selection element transfers the selected graph from the long-term memory to a fast memory proximate a DSP. Further, the selection element reselects and transfers new graphs into the fast memory as needed. | 02-05-2009 |
| 20090191923 | POWER AMPLIFYING APPARATUS WITH BANDWIDTH LIMITATION PROCESSING ON VARIABLE POWER SUPPLY - A power amplifying apparatus has a bandwidth limitation process circuit to which an envelope signal included in a transmission signal is inputted, and which performs a bandwidth limitation process on the envelope signal, a variable power supply circuit for generating a power amplifier supply voltage based on a voltage control signal generated by the bandwidth limitation process circuit, and a power amplifier which is fed an input signal, and which is driven in accordance with the supply voltage from the variable power supply circuit. | 07-30-2009 |
| 20090191924 | Method and System for Mobile Communications - When a network pages the temporary user mobile identifier of a mobile station, the mobile station sends a response to the network. Next, the network checks the authenticity of the user using a ciphering key, corresponding to the temporary user mobile identifier and a random number. If the temporary user mobile identifier is authenticated, a normal incoming call acceptance procedure is executed. If the mobile station is authenticated although the temporary user mobile identifier is wrong, the network reassigns a new temporary user mobile identifier to the mobile station and stops the current communication. In communication, the network and the mobile station mutually notify encipherment-onset time and negotiate about encipherment manner with each other. In addition, diversity handover is commenced upon a call attempt. Furthermore, if a branch replacement is necessary, the current branch is replaced by new branches capable of executing the diversity handover. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, the mobile station uses the same branch structure and the same communication frequency band for all of calls. Additionally, when a new call occurs to or from the mobile station capable of treating a plurality of calls simultaneously, a branch structure and a communication frequency band, which can continue all of the calls, are selected and used. Therefore, the mobile communications system is suitable for transmission of various sorts of data in accordance with the development of multimedia. | 07-30-2009 |
| 20100062813 | POWER AMPLIFIER LOAD LINE SWITCH FOR A PORTABLE TRANSCEIVER - In a portable radio transceiver, a power amplifier system includes a load line switch that operates in response to a mode control signal to promote high efficiency in both a high-power mode and a low-power mode. The switching circuit is operable to couple the inductance to the shunt capacitance in response to a control signal indicating operation in a low-power mode. The switching circuit is further operable to decouple the inductance from the shunt capacitance in response to a control signal indicating operation in a high-power mode. In the low-power mode, the inductance couples with the shunt capacitance to decrease total capacitance at the output of the power amplifier. In the high-power mode, the total capacitance at the output of the power amplifier is substantially equal to the shunt capacitance alone, and the inductance essentially has no effect on total capacitance at the power amplifier output. | 03-11-2010 |
| 20100069125 | TRANCEIVER AND TRANSCEIVING METHOD IN UWB SYSTEM FOR FREQUENCY SHARING - Provided are a transceiver and a transceiving method for use in an ultra wide band system for frequency sharing. The transceiver for use in an ultra wide band system for reducing interference that can be generated by an external system includes an external signal detector which detects an external signal generated from the external system, and a transmission signal controller which determines a power level of a transmission signal to be transmitted by the transceiver based on a power level of the detected external signal, in the case where an external signal using the same frequency channel as the ultra band system is detected, wherein the ultra wide band system and the external system are in a frequency sharing environment. | 03-18-2010 |
| 20100075724 | DC CURRENT BASED ON CHIP RF POWER DETECTION SCHEME FOR A POWER AMPLIFIER - A method, system, and apparatus of a DC current based on chip RF power detection scheme for a power amplifier are disclosed. In one embodiment, a method includes generating a scaled current from an other current associated with power amplifier, transforming the scaled current (e.g., the scaled current may be scaled to the other current value) into a digital signal and using the digital signal to set a radio frequency power value of an antenna of the antenna module. The method may include transforming the scaled current into a voltage signal. The method may also include transforming the voltage signal into the digital signal. The method may also include generating a current mirror from a low dropout regulator. | 03-25-2010 |
| 20100105448 | POWER AMPLIFIER SATURATION DETECTION - In a portable radio transceiver, a power amplifier system includes a saturation detector that detects power amplifier saturation in response to duty cycle of the amplifier transistor collector voltage waveform. The saturation detection output signal can be used by a power control circuit to back off or reduce the amplification level of the power amplifier to avoid power amplifier control loop saturation. | 04-29-2010 |
| 20100151917 | MOBILE DEVICE CRADLE INCLUDING A BATTERY CHARGER HAVING AN INTEGRATED ANTENNA OR AMPLIFIER - The present invention relates to a mobile device cradle, having one or more docking members for removably receiving a mobile device capable of sending and receiving communications via a communication network in the form of signals, a connection to an antenna capable of communicating signals to and from a base station of the communication network, a means for communicating signals to and from the mobile device; and a means for charging a battery of the mobile device. In the preferred embodiment, the mobile device cradle is mounted inside a vehicle and is used to improve the signal between the mobile device and the communication network. | 06-17-2010 |
| 20100178960 | DATA CONVERSION USING A SERIAL INTERFACE CLOCK IN A POWER AMPLIFIER MODULE - In a mobile wireless telecommunication device, a bidirectional serial interface is used to transfer a digital representation of an analog value from a first chip associated with a power amplifier module to a second chip. In an exemplary embodiment, circuitry on the first chip receives this clock signal from the second chip during the address portion of a read operation and uses this clock signal to generate a conversion clock signal. An analog-to-digital converter (ADC) on the first chip operates in response to the conversion clock signal to convert an analog value to a digital output. Circuitry on the first chip then transfers the digital output of the ADC from the first chip to the second chip via the serial interface. | 07-15-2010 |
| 20100190533 | METHOD AND SYSTEM FOR WIRELESS COVERAGE REDUNDANCY - Devices and methods are provided for providing wireless coverage redundancy in case, for example, the backhaul of an access point (AP) base station is not available. In one embodiment, the method involves monitoring the backhaul, and in response to the backhaul being available, facilitating communication between an access terminal (AT) and the macro network via the backhaul. In addition, or in the alternative (e.g., when the backhaul is not available), a communication signal between the AT and a macro base station (or another AP base station) may be boosted. | 07-29-2010 |
| 20100273535 | RADIO-FREQUENCY POWER AMPLIFIER DEVICE AND WIRELESS COMMUNICATION DEVICE INCLUDING THE SAME - A radio-frequency power amplifier device includes an input terminal for which a first radio-frequency signal for a CDMA mode within a first frequency band and a third radio-frequency signal for a TDMA mode within the first frequency band are selectively provided, a second input terminal for which a second radio-frequency signal for a CDMA mode within a second frequency band and a fourth radio-frequency signal for a TDMA mode within the second frequency band are selectively provided, a first power amplifier unit which to amplifies the provided first radio-frequency signal, a second power amplifier unit which amplifies the provided second radio-frequency signal, a third power amplifier unit which amplifies the provided third radio-frequency signal, and a fourth power amplifier unit which amplifies the provided fourth radio-frequency signal. These power amplifier units are arranged in order of the first power amplifier unit to the fourth power amplifier unit. | 10-28-2010 |
| 20100298035 | WIRELESS COMMUNICATION UNIT, INTEGRATED CIRCUIT AND METHOD OF POWER CONTROL THEREIN - A wireless communication unit comprises a transmitter having a power amplifier and a feedback path operably coupled to the power amplifier. The feedback path comprises a coupler for feeding back a portion of a signal to be transmitted and a detector for detecting a power level of the fed back signal. A controller provides a ramp signal to the power amplifier that controls an amplitude characteristic of the signal to be transmitted. Averaging logic is operably coupled to the detector and arranged to average the detected power level over a first period. Comparison logic is operably coupled to the averaging logic and arranged to compare the average detected power level with a reference value. The controller is operably coupled to the comparison logic and arranged to scale a ramp signal applied to the power amplifier in response to the comparison. | 11-25-2010 |
| 20110028188 | Radioterminals Including Satellite Interlocks and Related Methods - A radioterminal may include a transceiver, a hands-free interface, and a satellite/hands-free interlock. The transceiver may be configured for space-based communications and for terrestrial wireless communications. The satellite/hands-free interlock may be configured to prevent the transceiver from transmitting space-based communications unless the hands-free interface is activated. Related methods are also discussed. | 02-03-2011 |
| 20110111810 | MOBILE WIRELESS COMMUNICATIONS DEVICE WITH REDUCED MICROPHONE NOISE FROM RADIO FREQUENCY COMMUNICATIONS CIRCUITRY - A mobile wireless communications device includes a housing and circuit board in the housing and having radio frequency (RF) circuitry and a power amplifier and microphone mounted thereon. An antenna is carried within the housing and operative with the RF circuitry. An RF shield surrounds and isolates the microphone from the RF circuitry, power amplifier and antenna and shields the microphone from radiated energy generated from the RF circuitry, antenna or power amplifier. | 05-12-2011 |
| 20110117973 | RADIATED POWER CONTROL SYSTEMS AND METHODS IN WIRELESS COMMUNICATION DEVICES - Embodiments include systems and methods for controlling radiation of radio frequency (RF) energy by a wireless communication device that includes a transmitter, an antenna, a vector field sensor, and a processing system. The transmitter produces an analog RF signal, and the antenna radiates the analog RF signal into an environment. The vector field sensor senses an intensity of a vector field resulting from the analog RF signal radiated by at least the antenna (and possibly other portions of the device). The processing system determines whether a value representing the intensity is greater than a first threshold, and when the value is greater than the first threshold, the processing system causes the radiated RF energy produced by the wireless communication device to be decreased. | 05-19-2011 |
| 20110143821 | POWER AMPLIFICATION MODULE FOR MOBILE COMMUNICATION TERMINAL - Disclosed herein is a power amplification module for a mobile communication terminal. The power amplification module includes a balanced power amplifier configured to divide an input signal using a phase difference, amplify resulting signals, and combine the amplified signals with each other, and a transmission power detection unit connected to an isolation terminal formed on an output side of the balanced power amplifier and configured to amplify a micro-power signal, which is transmitted to the isolation terminal from an outside of the transmission power detection unit, and to transmit the amplified signal. Accordingly, since the detection signal to input terminal and detection signal output terminal of a transmission power detection unit can be easily implemented using an internal circuit, the entire size of the power amplification module can be reduced. Further, characteristic of isolation between the detection signal input terminal and the detection signal output terminal can be improved. | 06-16-2011 |
| 20110143822 | FULLY INTEGRATED COMPACT CROSS-COUPLED LOW NOISE AMPLIFIER - Fully integrated compact cross-coupled low noise amplifier. A circuitry implementation that includes two pairs of metal oxide semiconductor field-effect transistors (MOSFETs) (either N-type of P-type) operates as an LNA, which can be used within any of a wide variety of communication devices. A majority of the elements are integrated within the design and need not be implemented off-chip, and this can provide for a reduction in area required by the circuitry. A differential 100Ω input impedance is provided by this design. A higher than typical power supply voltage can be employed (if desired) to accommodate one possible implementation that includes two parallel implemented resistors to ground. | 06-16-2011 |
| 20110218020 | SYSTEM AND METHOD FOR POWER AMPLIFIER CONTROL SATURATION DETECTION AND CORRECTION - A system for power amplifier control saturation detection and correction includes a comparator configured to receive a power control signal and a detected power signal and generate a regulated voltage, a power amplifier configured to receive the regulated voltage and develop an output power, a power detector configured to sense the output power and develop the detected power signal, a saturation detector configured to receive the regulated voltage and a system voltage and determine whether the power amplifier is operating in a saturation mode during a transmit burst, and a current generator configured to reduce the power control signal when the power control signal exceeds a predetermined value and after expiration of a predetermined period of time, preventing the power control signal from exceeding the detected power signal. | 09-08-2011 |
| 20110269510 | APPARATUS AND METHOD FOR PREVENTING TRANSMISSION DEGRADATION IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for preventing transmission degradation in a mobile terminal. The apparatus includes an antenna, a Power Amplifier Module (PAM), and a matching module. The PAM amplifies power of a transmission signal. A matching module is located between the antenna and the PAM, to match impedance of a signal whose power is amplified by the PAM using a matching value determined depending on a supplied power magnitude of the PAM. | 11-03-2011 |
| 20110294553 | MOBILE WIRELESS COMMUNICATIONS DEVICE WITH RF SHIELD AND RELATED METHODS - A mobile wireless communications device may include a housing, an antenna carried by the housing, and a circuit board carried by the housing. The mobile wireless communications device may also include a power amplifier carried by the circuit board, an antenna switch carried by the circuit board and configured to selectively couple the power amplifier to the antenna, a first radio frequency (RF) shield covering the power amplifier and the antenna switch, and a second RF shield within the first RF shield and covering the antenna switch. | 12-01-2011 |
| 20110306391 | Transmitter architecture enabling efficient preamplification gain control and related method - According to one embodiment, a radio frequency (RF) transceiver includes a transmitter enabling efficient preamplification gain control. The RF transceiver comprises a receiver and a power amplifier (PA) for amplifying a transmit signal of the transmitter. The transmitter is configured to provide pre-PA gain control for preamplifying the transmit signal before amplification by the PA, wherein substantially all of the pre-PA gain control is provided when the transmit signal is at a transmit frequency of the transmitter. In one embodiment, the transmitter includes a PA driver comprising in combination: a transconductance amplifier, a current steering block, and an output transformer. Each of the transconductance amplifier, current steering block, and output transformer is configured to contribute a respective variable gain control to the pre-PA gain control provided by the PA driver. | 12-15-2011 |
| 20120028690 | Active Electrical Tilt Antenna Apparatus with Distributed Amplifier - In various embodiments of the present disclosure, an apparatus for wirelessly transmitting or receiving communication signals may include multiple active elements to transmit or receive communication signals wirelessly; and multiple active modules correspondingly coupled to the multiple active elements and configured to cooperate with respective ones of the multiple active elements; in which the respective ones of the multiple active modules include a power amplifier configured to amplify communication signals to be transmitted and a low noise amplifier configured to amplify communication signals received, and in which the respective ones of the multiple active modules further include a first phase shift configured to shift phases of the communication signals to be transmitted and a second phase shift configured to shift phases of the communication signals received. Other embodiments may be described and claimed. | 02-02-2012 |
| 20120034956 | SYSTEM AND METHOD FOR BIASING A POWER AMPLIFIER - A system and method for biasing a power amplifier includes a power amplifier having a driver stage and an output stage, the driver stage having a plurality of driver devices, a bias current source configured to deliver a bias current to each of the plurality of driver devices, and a current directing element configured to receive the bias current and selectively bias each of the plurality of driver devices based on a reference voltage and a system voltage. | 02-09-2012 |
| 20120064952 | Radio Frequency Module Having an Isolation Mode Between Transmission Mode and Power Saving Mode - A radio frequency module is configured to enter a power saving mode with high reliability. The radio frequency module includes, e.g., a first switch transistor for coupling a transmission node to an antenna, a second switch transistor for shunting the transmission node to a ground voltage, and a level shift circuit for performing on-off control of the first and second switch transistors by positive and negative power supply voltages. The level shift circuit, upon receiving a sleep instruction while the module is in a transmission operation mode in which the first switch transistor for coupling a transmission node to an antenna is turned on and the second switch transistor for shunting the transmission node to a ground voltage is turned off, first transitions to an isolation operation mode in which the first switch transistor for coupling a transmission node to an antenna is turned off and the second switch transistor for shunting the transmission node to a ground voltage is turned on for a first period of time, and then transitions to a sleep mode in which the positive and negative power supply voltages are deactivated. | 03-15-2012 |
| 20120064953 | CONTROLLER AND METHOD FOR USING A DC-DC CONVERTER IN A MOBILE HANDSET - A controller enables the integration of a DC-DC converter in an amplitude modulation power control loop in a mobile handset. The controller includes an input conditioner and an event sensor. The input conditioner uses a peak detector to track the output of a regulator and responds to available baseband input signals. The event sensor controls a switch that connects the DC-DC converter to a battery in response to a bypass event. The controller bypasses the DC-DC-converter when a transmitter is not enabled. The DC-DC converter is enabled prior to a transmission burst. A target voltage is determined from a series of detected peak voltages from the output of the regulator. The controller commands the DC-DC converter to transition to the target voltage until the end of a transmission burst. | 03-15-2012 |
| 20120071214 | Inductively Coupled Signal Booster For A Wireless Communication Device And In Combination Therwith - A passively re-radiating cell phone sleeve assembly capable of conforming to and nesting with a cell phone provides a partial enclosure capable of fitting over at least a portion of the cell phone. A multi-layer radio frequency (RF) coupling probe is fully embedded within the enclosure in a position that is in close proximity to an internal antenna of the cell phone when the enclosure is nested with the cell phone. A coupling probe is inductively coupled to the internal antenna for sharing RF signals and is desensitized from de-tuning the internal antenna of the cell phone. An external antenna is mounted on the enclosure; and a transmission line embedded within the enclosure joins the coupling probe and the external antenna for RF signal transfer. RF transmission signals of the cell phone are radiated from both the internal and the external antennae simultaneously and without mutual interference. | 03-22-2012 |
| 20120094727 | POWER AMPLIFICATION CIRCUIT AND COMMUNICATION APPARATUS - Provided is a power amplification circuit capable of quickly and highly accurately preventing an output power and a current of a power amplifier from fluctuating when an antenna load changes. A power amplifier | 04-19-2012 |
| 20120149442 | METHOD AND APPARATUS FOR OPTIMIZING OUTPUT POWER LEVELS IN POWER AMPLIFIERS - Some embodiments discussed relate to an apparatus comprising a power amplifier module. The power amplifier module includes a plurality of sensors, and a first digital communication port configured to provide a monitor signal from at least one of the plurality of sensors. The apparatus includes a transceiver module coupled to provide an signal to an input of the power amplifier the transceiver module including a second digital communication port configured to receive the monitor signal from the first digital communication port, a processing unit configured to generate at least one of a bias control signal and a back-off signal dependent upon the monitor signal, and a power controller to receive the at least one of bias control signal and the back-off signal and provide at least one further input signal to the power amplifier based on at least one of the bias control signal and the back-off signal. | 06-14-2012 |
| 20120190411 | Wireless Communications Chip with Multi-Port Distributed Antenna - Methods and systems for power combining in a multi-port distributed antenna are disclosed and may include power combining signals from power amplifiers (PAs) on a chip. The PAs may be coupled to a single distributed antenna via antenna ports. A phase of each of the signals may be matched at the antenna ports via phase-matching circuitry. A characteristic impedance may be configured at the ports based on a location of the ports. The PAs may be impedance matched to the antenna ports via impedance matching elements. A power level of the power-combined signals may be monitored via a power detector coupled to the distributed antenna. The power detector may include an envelope detector, such as a diode. The antenna may be integrated on the chip or may be located external to the chip. The signals may include RF signals and the antenna may include a microstrip antenna. | 07-26-2012 |
| 20120214555 | MOBILE WIRELESS COMMUNICATIONS DEVICE WITH REDUCED MICROPHONE NOISE FROM RADIO FREQUENCY COMMUNICATIONS CIRCUITRY - A mobile wireless communications device includes a housing and circuit board in the housing and having radio frequency (RF) circuitry and a power amplifier and microphone mounted thereon. An antenna is carried within the housing and operative with the RF circuitry. An RF shield surrounds and isolates the microphone from the RF circuitry, power amplifier and antenna and shields the microphone from radiated energy generated from the RF circuitry, antenna or power amplifier. | 08-23-2012 |
| 20120244916 | Multimode Operation DC-DC Converter - Embodiments for at methods, apparatus and systems for operating a voltage regulator are disclosed. One method includes generating, by a switching controller, a switching voltage through controlled closing and opening of a series switch element and a shunt switch element. Further, the method includes generating, by a switchable output filter, a regulated output voltage by filtering the switching voltage, wherein the switchable output filter comprises a plurality of capacitors that are selectively included within the switchable output filter. | 09-27-2012 |
| 20120295668 | SEMICONDUCTOR DEVICE, MANUFACTURING METHOD THEREOF, AND MOBILE TELEPHONE - Provided is a technology capable of inhibiting a shield film formed over a surface of a sealing body from peeling from the surface of the sealing body, and inhibiting a part of the shield film from bulging from the surface of the sealing body. The present invention is characterized in that a peeling-prevention-mark formation region is provided so as to surround a product-identification-mark formation region, and a plurality of peeling prevention marks are formed in the peeling-prevention-mark formation region. That is, the present invention is characterized in that the region of the surface region of the sealing body which is different from the product-identification-mark formation region is defined as the peeling-prevention-mark formation region, and the peeling prevention marks are formed in the peeling-prevention-mark formation region. | 11-22-2012 |
| 20120322512 | MOBILE PHONE FOR CONTROLLING DIVERSITY - A mobile phone to transmit and receive a radio frequency signal through a first antenna and a second antenna in a radio communication system includes a first radio frequency signal receiving unit to convert the radio frequency signal received through the first antenna into a baseband signal to be transmitted to a controller, a second radio frequency signal receiving unit to convert the radio frequency signal received through the second antenna into a baseband signal to be transmitted to the controller, and a radio frequency signal transmitting unit to convert a baseband signal transmitted from the controller into a radio frequency signal, to distribute the radio frequency signal, and to selectively output the distributed radio frequency signal to the first antenna and the second antenna. | 12-20-2012 |
| 20130079065 | MULTI-MODE POWER AMPLIFIER - There is provided a multi-mode power amplifier having increased isolation, including: a high power mode amplifying unit amplifying an input signal by a pre-set gain when the input signal has a power level higher than a pre-set reference level; a low power mode amplifying unit amplifying the input signal by a pre-set gain when the input signal has a power level lower than the pre-set reference level; a switch unit including one or more switches selectively proving a signal transmission path to the high power mode amplifying unit and the low power mode amplifying unit; and a controller providing a control signal having a pre-set voltage level for switching the one or more switches of the switch unit on or off, the voltage level of the control signal for switching the one or more switches off being set to be a negative voltage. | 03-28-2013 |
| 20130095895 | MULTI-ANTENNA WIRELESS DEVICE WITH POWER COMBINING POWER AMPLIFIERS - A wireless device with power combining power amplifiers to support transmission on multiple antennas is disclosed. The power amplifiers may be operated together to obtain higher output power or separately to support transmission on multiple antennas. In an exemplary design, an apparatus includes first and second power amplifiers. The first power amplifier amplifies a first input signal and provides a first output signal for a first antenna in a first operating mode (e.g., a MIMO mode or a transmit diversity mode). The second power amplifier amplifies the first input signal or a second input signal and provides a second output signal for a second antenna in the first operating mode. The first and second power amplifiers are power combined in a second operating mode to provide a third output signal, which has a higher maximum output power than the first or second output signal. | 04-18-2013 |
| 20130102367 | ANTENNA CASE FOR SMARTPHONES AND WIRELESS TERMINALS - A portable accessory for preventing death grip of a hand-held apparatus and improving radio wave transmission and reception of the hand-held apparatus. The portable accessory includes an inductive signal amplifying circuit including: a radio transmission/radio unit that transmits or receives radio waves; a capacitive coupled unit that is capacitively coupled with an antenna mounted in the hand-held apparatus; and an impedance matching unit that connects the radio wave transmission/reception unit and the capacitive coupled unit and transmits radio waves. | 04-25-2013 |
| 20130109441 | Method of Calibrating the Delay of an Envelope Tracking Signal | 05-02-2013 |
| 20130109442 | Methods and Systems for Pre-Emphasis of an Envelope Tracking Power Amplifier Supply Voltage | 05-02-2013 |
| 20130116016 | Communications Chip with Multi-Port Distributed Antenna - Methods and systems for power combining in a multi-port distributed antenna are disclosed and may include power combining signals from power amplifiers (PAs) on a chip. The PAs may be coupled to a single distributed antenna via antenna ports. A phase of each of the signals may be matched at the antenna ports via phase-matching circuitry. A characteristic impedance may be configured at the ports based on a location of the ports. The PAs may be impedance matched to the antenna ports via impedance matching elements. A power level of the power-combined signals may be monitored via a power detector coupled to the distributed antenna. The power detector may include an envelope detector, such as a diode. The antenna may be integrated on the chip or may be located external to the chip. The signals may include RF signals and the antenna may include a microstrip antenna. | 05-09-2013 |
| 20130130750 | MULTI-MODE POWER AMPLIFIER - A multi-mode power amplifier includes a high-power mode amplifier circuit, a mid-power mode amplifier circuit, and a low power amplifier circuit, where the low-power mode amplifier circuit comprises a plurality of independently selectable power cell/amplifier branches. The multi-mode power amplifiers selectively enable or disable amplifier branches to provide multiple levels of amplification. Selectively enabling certain of a plurality of split collector amplifier branches provides multiple low power and ultra-low power amplifier modes without the impedance mismatch or board layout problems associated with an RF switch. | 05-23-2013 |
| 20130172056 | MOBILE TERMINAL - A mobile terminal including a transceiver having a plurality of output terminals; a plurality of power amplifier units respectively connected to the plurality of output terminals, and configured to amplify a first or second signal output by the output terminals and to output the amplified first or second signal to a plurality of antennas respectively connected the plurality of power amplifiers; and a receiving module configured to receive a third signal through a receiving antenna disposed to be spaced apart from the plurality of antennas and to output the received third signal to the transceiver. Further, the receiving module includes first and second filters configured to control an intermodulation distortion (IMD) signal included in the third signal due to the output of the first or second signal. | 07-04-2013 |
| 20130196719 | MOBILE WIRELESS COMMUNICATIONS DEVICE INCLUDING SENSING TRANSISTOR AND HYSTERETIC COMPARATOR AND RELATED METHODS - A mobile wireless communications device may include a portable housing, and a supply modulator carried by the portable housing. The supply modulator may include an output node, a linear amplifier coupled to the output node, and a switching amplifier also coupled to the output node. The switching amplifier may include at least one sensing transistor configured to sense current output from the linear amplifier and generate a drive voltage, and a hysteretic comparator coupled to the at least one sensing transistor and configured to be driven by the drive voltage. The mobile wireless communications device may also include a radio frequency (RF) power amplifier coupled to the output node of the supply modulator, and a wireless transceiver carried by the portable housing and coupled to the RF power amplifier. | 08-01-2013 |
| 20130210500 | POWER BOOSTERS FOR RADIO TERMINALS - A conventional UE in a radio system based on LTE may be boosted for use in an extended geographical cell provided by an eNodeB. The booster may be connected to the UE in various ways which minimise the changes required to an otherwise standard UE device. The booster is activated by control signals from the UE, or by an internal switch, or by a power detector for example. Power headroom reports by the UE to the eNodeB are correct within the larger cell. | 08-15-2013 |
| 20130217447 | ELECTRONIC EQUIPMENT, STORAGE MEDIUM AND OUTPUT CONTROLLING METHOD - A mobile phone which is an example of electronic equipment includes a processor, and when a PTT conversation is started, in the processor, a DSP starts an input and an output under instructions by a control circuit. The processor (control circuit) keeps stopping an output from an amplifier provided at a preceding stage of a speaker, if and when a floor is gotten by a user himself/herself. On the other hand, if and when a floor is gotten by any other person, the processor starts the output of the amplifier, and stops the output when the floor is released by the other person. | 08-22-2013 |
| 20130260841 | MOBILE WIRELESS COMMUNICATIONS DEVICE WITH REDUCED MICROPHONE NOISE FROM RADIO FREQUENCY COMMUNICATIONS CIRCUITRY - A mobile wireless communications device includes a housing and circuit board in the housing and having radio frequency (RF) circuitry and a power amplifier and microphone mounted thereon. An antenna is carried within the housing and operative with the RF circuitry. An RF shield surrounds and isolates the microphone from the RF circuitry, power amplifier and antenna and shields the microphone from radiated energy generated from the RF circuitry, antenna or power amplifier. | 10-03-2013 |
| 20130273979 | DC POWER CONTROL FOR POWER AMPLIFIERS - Some embodiments of the present disclosure relate to transmission techniques that result in power savings relative to previous solutions. These techniques often transmit a signal-of-interest by using two paths, namely, a transmission path (which includes a power amplifier) and a control path. The signal-of-interest is evaluated in “fast-track” fashion on the control path, such that the control path can “tune” a DC supply signal provided to the power amplifier. Thus, when a delayed version of the signal-of-interest is provided over the transmission path to the power amplifier, the DC supply signal provided to the power amplifier helps ensure that the power amplifier has “just enough” DC supply to ensure reliable operation without dissipating excess power. In this way, the techniques disclosed herein help to reduce power consumption in transmitters, thereby potentially helping to extend battery life and reduce undesired heating for users. | 10-17-2013 |
| 20130281167 | APPARATUS AND METHOD FOR MATCHING ANTENNA IMPEDANCE IN WIRELESS COMMUNICATION SYSTEM - An apparatus and method for matching antenna impedance in a mobile station are provided. In implementation, a mobile station receives power control information including information for controlling transmit power of the mobile station, generates matching control information for antenna impedance matching based on the received power control information, and performs antenna impedance matching depending on the generated matching control information. | 10-24-2013 |
| 20130310114 | AMPLIFIER AND MOBILE COMMUNICATION DEVICE - An amplifier includes a first lower active sub cell and a second lower active sub cell, each comprising an input terminal and an output terminal, wherein the input terminals of the lower active sub cells are connected to the amplifier input and the output terminals of the lower active sub cells are not shorted. Furthermore, the amplifier includes a first upper active sub cell and a second upper active sub cell, each including a biasing terminal, wherein the input terminals and the output terminals of the upper active sub cells are coupled between the output terminals of the lower active sub cells and the amplifier output. The amplifier includes a bias controller configured to provide a first biasing signal to the first upper active sub cell and a second biasing signal to the second upper active sub cell based on an output power of the output signal. | 11-21-2013 |
| 20140018133 | RF Communications - An envelope tracking amplifier for a transmitter has a voltage mapping linearly related to the square of the amplitude of the baseband signal. | 01-16-2014 |
| 20140080549 | SMART AGC FOR WIDEBAND MULTI-STANDARD RFIC - One embodiment of the present invention provides an automatic gain control (AGC) module for a wireless communication system that includes a plurality of amplifiers. The AGC module includes a receiving mechanism configured to receive an input that indicates a total amount of gain adjustment; a collecting mechanism configured to collect a number of parameters associated with the amplifiers; a determining mechanism configured to determine a desired performance requirement; a gain-control engine configured to generate a gain profile for the amplifiers based on the collected parameters, the total amount of gain, and the desired performance requirement; and an output mechanism configured to output a plurality of control signals based on the generated gain profile, wherein a respective control signal independently controls gain of a corresponding amplifier, thereby enabling the wireless communication system to achieve the total amount of gain adjustment while meeting the desired performance requirement. | 03-20-2014 |
| 20140100002 | Power Amplifier Having An Integrated Microcontroller - In an embodiment, a power amplifier (PA) includes a signal processing path including gain stages to receive a radio frequency (RF) signal and to output an amplified RF signal, sensors coupled to the signal processing path each to sense a characteristic of operation of the PA, and a microcontroller configured to execute instructions and to receive the operation characteristic(s) and to control one or more parameters of the signal processing path responsive this operation characteristic. | 04-10-2014 |
| 20140141843 | ANTENNA CASE FOR SMARTPHONES AND WIRELESS TERMINALS - A portable accessory for preventing death grip of a hand-held apparatus and improving radio wave transmission and reception of the hand-held apparatus. The portable accessory includes an inductive signal amplifying circuit including: a radio transmission/radio unit that transmits or receives radio waves; a capacitive coupled unit that is capacitively coupled with an antenna mounted in the hand-held apparatus; and an impedance matching unit that connects the radio wave transmission/reception unit and the capacitive coupled unit and transmits radio waves. | 05-22-2014 |
| 20140162732 | Gain Control Method for a Broadband Inductorless Low Noise Amplifier - A mobile device comprising an antenna, a receiver coupled to the antenna, and a transmitter coupled to the antenna, wherein the receiver, the transmitter, or both comprise a low noise amplifier comprising an adjustable gain and a variable impedance controller, and wherein the low noise amplifier is configured to sink current and to adjust a shunt resistance substantially simultaneously. Included is a method comprising receiving an electrical signal, substantially simultaneously adjusting an input impedance and a gain factor, amplifying the electrical signal, thereby producing an amplified signal, and outputting the amplified signal. | 06-12-2014 |
| 20140243049 | GAIN CONTROL METHODS TO CONTROL AN ADJUSTABLE POWER LEVEL - A method to control adjustable power levels uses a network of attenuators that includes a fixed attenuation and a variable attenuation. The method adjusts the variable attenuation to approach the fixed attenuation, provides gain to an attenuated signal in an amount proximate to the fixed attenuation to generate a compensated signal, and compares power levels of a non-attenuated signal and the compensated signal to generate a first error signal. The method introduces the fixed attenuation and correspondingly reduces the variable attenuation to maintain a combined attenuation. The combined attenuation generates a modified compensated signal. The method measures a difference between the first power levels of the non-attenuated signal and the modified compensated signal to generate a second error signal, and generates a control signal as function of the first and second error signals to adjust the variable attenuation to reduce an attenuation mismatch introduced between the fixed and variable attenuations. | 08-28-2014 |
| 20140349716 | Harmonic Filtering for an Up-Converting, Voltage Mode, Passive Mixer - Disclosed herein is a passive, voltage mode transmitter assembly and method of operation. The passive, voltage mode transmitter assembly comprises a baseband filter configured to filter a source baseband signal, a harmonics filter, connected to the baseband filter, configured to remove harmonics from the filtered, source baseband signal, a passive, voltage mode mixer, connected to the harmonics filter, configured to up-convert an output of the harmonics filter to a radio signal, and a power amplifier, connected to the passive, voltage mode mixer, configured to amplify the radio signal. | 11-27-2014 |
| 20150072740 | SOFTWARE-DEFINED RADIO WITH BROADBAND AMPLIFIERS AND ANTENNA MATCHING - Mobile phone handsets include a CMOS front end configured for operating across multiple transmit and receive frequencies. The front end typically includes multiple receivers, each covering a different band allocated for cellular service, and requires large, expensive and power-intensive A/D converters and DSPs. Front-end circuits disclosed herein operate with a broadband software-defined radio (SDR), and include a receive Low Noise Amplifier (LNA), transmit Power Amplifier (PA), and an antenna matching network. The front-end provides broadband operation using relatively low power, and minimizes noise in the received signal. | 03-12-2015 |
| 20150119115 | MULTIBAND RF DEVICE - A device or system for transmission and reception for voice or data communication applications. The device or system is capable of duplex operation and adapted to operate in an environment using a plurality of frequency bands. The present disclosure also relates to a communication means including a transmitter and receiver arrangement and to antennas. | 04-30-2015 |
| 20150295611 | CONCURRENT TRANSMIT AND RECEIVE - The disclosure is directed to a circuit arrangement and method that provide efficient concurrent transmit and receive, transmit only and receive only of wireless signals. In one implementation, a circuit arrangement is provided that incorporates uses a single antenna to achieve concurrent transmit and receive, transmit only and receive only of wireless signals. A dual amplifier structure may be provided, and at least one of the amplifiers associated with the dual amplifier structure is amplitude tunable in order to ensure that each amplifier of the dual amplifier structure provides substantially the same or the same signal amplification. Unwanted transmit signals detected by a receiving circuit arrangement may be used to cause a processor to generate a digital code word that is used to modify a signal amplification provided by at least one of the amplifiers associated with the dual amplifier structure. | 10-15-2015 |
| 20150341002 | WIRELESS COMMUNICATION DEVICE, METHOD AND POWER AMPLIFIER OF THE SAME - A wireless communication device that includes a power amplifier and an antenna is provided. The power amplifier includes a first and a second power amplifying paths and a first and a second matching modules. The first and the second power amplifying paths receive a first and a second input signals respectively. The first matching module includes a first input variable load and a first phase-shifting circuit to respectively adjust the magnitude and the phase of the first input signal to generate a first output signal. The second matching module includes a second input variable load and a second phase-shifting circuit to respectively adjust the magnitude and the phase of the second input signal to generate a second output signal. The antenna is coupled to the power amplifier to transmit the first and the second output signals. | 11-26-2015 |
| 20160020713 | MOBILE COMMUNICATION TERMINAL - A mobile communication terminal comprises an acoustic-electro conversion unit configured to convert sound into electric energy, which includes a conversion device for converting vibration into electric energy; and an energy storage unit electrically connected to the conversion device and configured to store electric energy generated by the conversion device. The mobile communication terminal can solve the problem that the mobile communication terminal has large power consumption and short continuous service time, and can make full use of energy, has a long continuous service time and is convenient to use. | 01-21-2016 |
| 20160036388 | Adaptive Envelope Tracking for Biasing Radio Frequency Power Amplifiers - An RF PA is designed to operate efficiently for average powers when biased at the system supply voltage, and uses an envelope tracking power supply to boost the bias voltage to maintain good efficiency at higher powers. As a result, for a majority of the time when transmitting average power signals, the RF PA bias voltage is the system-wide supply voltage (e.g. 3.4V in cell phones), which eliminates the need for stepping down voltages. The bias voltage is boosted during the less frequent times when higher power is needed. As a result, only a boost type of DC voltage converter is needed. The efficiency of the RF PA is therefore increased because voltage conversion is required less frequently and only when higher power RF signals are transmitted. | 02-04-2016 |
| 20160057263 | METHOD AND APPARATUS FOR PROVIDING PRIVACY FOR TELEPHONE CONVERSATIONS - A method and apparatus for providing privacy for telephone conversations over communication networks is disclosed. For example, a telephony endpoint device comprises a microphone for receiving an audio signal and a gain boost circuit, coupled to the microphone, for applying a gain boost to the audio signal. The telephony endpoint device also comprises a switch, coupled to the gain boost circuit, wherein operating the switch will control whether the gain boost is to be applied to the audio signal. | 02-25-2016 |
| 20160112087 | METHOD FOR COMPENSATING A POWER AMPLIFICATION UNIT OF A WIRELESS RF MODULE - The present invention relates to a method for compensating a power amplification unit of a wireless RF module that includes a baseband unit, a RF transceiver unit, a power amplification unit and a control unit. The baseband unit is connected to the power amplification unit through the control unit and the RF transceiver unit. Based on the characteristic of the power amplification unit, the baseband unit provides a control signal to regulate the output signal characteristic of the power amplification unit, or provides a RF transceiver unit control signal to regulate the characteristics of the RF signal being transmitted by the RF transceiver unit to the power amplification unit, or to regulate the characteristics of the baseband signal being transmitted to the RF transceiver unit, enabling the characteristics of the output signal of the power amplification unit to meet the specifications of the related system. | 04-21-2016 |
| 20160174153 | APPARATUS AND METHODS FOR ENVELOPE TRACKING IN A MOBILE DEVICE | 06-16-2016 |
| 20160254831 | INFORMATION PROCESSING DEVICE | 09-01-2016 |
| 20180026594 | PEAKING AMPLIFIER BIAS CONTROL | 01-25-2018 |
