Patent application number | Description | Published |
20090160575 | Power Combiners and Dividers Based on Composite Right and Left Handed Metamaterial Structures - Techniques, apparatus and systems that use composite left and right handed (CRLH) metamaterial structures to combine and divide electromagnetic signals at multiple frequencies. The metamaterial properties permit significant size reduction over a conventional N-way radial power combiner or divider. Dual-band serial power combiners and dividers and single-band and dual-band radial power combiners and dividers are described. | 06-25-2009 |
20090245146 | Advanced Active Metamaterial Antenna Systems - Techniques, antenna systems and apparatus based on composite right and left handed (CRLH) metamaterial (MTM) structures to couple CRLH MTM circuits to transistors to amplify signals in wireless RF receivers and transmitters. | 10-01-2009 |
20090295473 | Power Amplifier Architectures - Implementations and examples of power amplifier devices, systems and techniques for amplifying RF signals, including power amplifier systems based on Composite Right and Left Handed (CRLH) metamaterial (MTM) structures. | 12-03-2009 |
20090295483 | RF Power Amplifiers with Linearization - Designs and techniques associated with power amplifiers for amplifying RF signals to provide variable power amplification and improved linearity in various RF amplification circuits, including power amplifiers operated under the power back-off conditions. | 12-03-2009 |
20100109803 | POWER COMBINERS AND DIVIDERS BASED ON COMPOSITE RIGHT AND LEFT HANDED METAMATERIAL STRUCTURES - Techniques, apparatus and systems that use composite left and right handed (CRLH) metamaterial structures to combine and divide electromagnetic signals at multiple frequencies. The metamaterial properties permit significant size reduction over a conventional N-way radial power combiner or divider. Dual-band serial power combiners and dividers and single-band and dual-band radial power combiners and dividers are described. | 05-06-2010 |
20100110943 | ADVANCED ACTIVE METAMATERIAL ANTENNA SYSTEMS - Techniques, antenna systems and apparatus based on composite right and left handed (CRLH) metamaterial (MTM) structures to couple CRLH MTM circuits to transistors to amplify signals in wireless RF receivers and transmitters. | 05-06-2010 |
20100171563 | MULTIPLE POLE MULTIPLE THROW SWITCH DEVICE BASED ON COMPOSITE RIGHT AND LEFT HANDED METAMATERIAL STRUCTURES - Techniques, apparatus and systems for a multiple pole multiple throw (MPMT) RF switch device based on composite left and right handed (CRLH) metamaterial structures. | 07-08-2010 |
20100176880 | POWER AMPLIFIER ARCHITECTURES - Implementations and examples of power amplifier devices, systems and techniques for amplifying RF signals, including power amplifier systems based on Composite Right and Left Handed (CRLH) metamaterial (MTM) structures. | 07-15-2010 |
20100207703 | METAMATERIAL POWER AMPLIFIER SYSTEMS - Power amplifying systems and modules and components therein are designed based on CRLH structures, providing high efficiency and linearity. | 08-19-2010 |
20110068873 | RF Power Amplifiers with Linearization - Designs and techniques associated with power amplifiers for amplifying RF signals to provide variable power amplification and improved linearity in various RF amplification circuits, including power amplifiers operated under the power back-off conditions. | 03-24-2011 |
20110109402 | POWER COMBINERS AND DIVIDERS BASED ON COMPOSITE RIGHT AND LEFT HANDED METAMATERIAL STURCTURES - Techniques, apparatus and systems that use composite left and right handed (CRLH) metamaterial structures to combine and divide electromagnetic signals at multiple frequencies. The metamaterial properties permit significant size reduction over a conventional N-way radial power combiner or divider. Dual-band serial power combiners and dividers and single-band and dual-band radial power combiners and dividers are described. | 05-12-2011 |
20110248791 | METAMATERIAL DIPLEXERS, COMBINERS AND DIVIDERS - A wireless device having a CRLH structure incorporates a power combiner/divider and diplexer. In one embodiment, circuit parameters are selected to achieve impedance matching using a transmission line structure. | 10-13-2011 |
20110261734 | DIFFERENTIAL POWER AMPLIFIER ARCHITECTURES - In one embodiment, a differential power amplifier structure includes a transceiver module supporting multiple frequency band signals, a plurality of power amplifiers coupled to the transceiver module, each of the plurality of power amplifiers having at least two outputs having 180° phase offset therebetween, and a plurality of filters coupled to the plurality of power amplifiers. | 10-27-2011 |
20120161867 | METAMATERIAL POWER AMPLIFIER SYSTEMS - Power amplifying systems and modules and components therein are designed based on CRLH structures, providing high efficiency and linearity. | 06-28-2012 |
20120169414 | METAMATERIAL POWER AMPLIFIER SYSTEMS - Power amplifying systems and modules and components therein are designed based on CRLH structures, providing high efficiency and linearity. | 07-05-2012 |
20120258677 | POWER AMPLIFIER ARCHITECTURES - Implementations and examples of power amplifier devices, systems and techniques for amplifying RF signals, including power amplifier systems based on Composite Right and Left Handed (CRLH) metamaterial (MTM) structures. | 10-11-2012 |
20130109434 | MULTI-MODE MULTI-BAND SELF-REALIGNING POWER AMPLIFIER | 05-02-2013 |
20130122831 | COMMUNICATION SYSTEMS WITH ENHANCED ISOLATION PROVISION AND OPTIMIZED IMPEDANCE MATCHING - A communication system has multiple paths including one or more Tx paths for processing Tx signals and one or more Rx paths for processing Rx signals, one or more PAs coupled respectively to the one or more Tx paths for amplifying the Tx signals, one or more LNAs coupled respectively to the one or more Rx paths for amplifying the Rx signals, one or more Tx filters coupled respectively to the one or more Tx paths for filtering the Tx signals, one or more Rx filters coupled respectively to the one or more Rx paths for filtering the Rx signals, and an antenna comprising multiple feeds coupled to the multiple paths, respectively, to provide physical separation of the multiple paths from each other. Physical separation among the multiple paths and impedance matching provides isolation among the multiple paths, and relaxes rejection considerations on the filters. | 05-16-2013 |
20130137384 | COMMUNICATION SYSTEM WITH BAND, MODE, IMPEDANCE AND LINEARIZATION SELF-ADJUSTMENT - A communication system is provided, including an antenna, a PA, a linearization circuit to enhance linearity, a filter system, and a controller. The controller is configured to receive information on the signals and conditions, and based on the information the controller controls one or more of the antenna, the PA, the linearization circuit and the filter system to provide an optimum configuration to meet specifications of signal properties under the conditions. The controller may look up a registry having entries regarding the specifications of signal properties under conditions in terms of predetermined parameters. | 05-30-2013 |
20130149957 | ADAPTIVE REPEATER FOR IMPROVED COMMUNICATION SYSTEM PERFORMANCE - A dynamically tuned repeater system for improved communication system performance is disclosed. The repeater circuit consists of power amplifiers, low noise amplifiers, filters, switches and antennas along with tuning circuits integrated and controlled to provide an optimized system for RF transmission improvement. Dynamic tuning provides the ability to maintain optimized system performance as required by communication link characteristics. Inputs from proximity sensors are used to further optimize system performance. The repeater topology is capable of transmission and reception enhancement at a multitude of frequency bands. | 06-13-2013 |
20130187828 | TUNABLE MATCHING NETWORK FOR ANTENNA SYSTEMS - A communication system is provided, including an antenna, a matching network coupled to the antenna, a controller configured to control the matching network, and a look-up table coupled to the controller. The look-up table includes characterization data according to frequency bands and conditions. The controller is configured to refer to the look-up table to determine optimum impedance for a frequency band selected under a condition detected during a time interval, and adjust the matching network to provide the optimum impedance. | 07-25-2013 |
20130278477 | MULTI-BAND COMMUNICATION SYSTEM WITH ISOLATION AND IMPEDANCE MATCHING PROVISION - A communication system is provided, including an antenna coupled to multiple RF paths, one or more matching networks, multiple switches, a controller configured to control the one or more matching networks and the multiple switches, and a look-up table coupled to the controller, the look-up table including characterization data according to frequency bands and conditions. The multiple switches are controlled to engage the signal path corresponding to the frequency band selected. The one or more matching networks are controlled by the controller to provide optimum impedance for the frequency band selected and a condition detected during a time interval with reference to the look-up table. Additional switches may be included to improve isolation. | 10-24-2013 |
20130285873 | MULTI-BAND COMMUNICATION SYSTEM WITH ISOLATION AND IMPEDANCE MATCHING PROVISION - A communication system is provided, including one or more antennas coupled to multiple RF paths, one or more matching blocks, each block including multiple matching networks, a look-up table including characterization data according to frequency bands and conditions, and a controller configured to control the multiple matching networks by referring to the look-up table to provide optimum impedance for a frequency band selected and a condition detected during a time interval. The matching block may further include switches and adjustment circuits. | 10-31-2013 |
20140028401 | METAMATERIAL POWER AMPLIFIER SYSTEMS - Power amplifying systems and modules and components therein are designed based on CRLH structures, providing high efficiency and linearity. | 01-30-2014 |
20140091880 | POWER COMBINERS AND DIVIDERS BASED ON COMPOSITE RIGHT AND LEFT HANDED METAMATERIAL STRUCTURES - Techniques, apparatus and systems that use composite left and right handed (CRLH) metamaterial structures to combine and divide electromagnetic signals at multiple frequencies. The metamaterial properties permit significant size reduction over a conventional N-way radial power combiner or divider. Dual-band serial power combiners and dividers and single-band and dual-band radial power combiners and dividers are described. | 04-03-2014 |
20140170994 | PROVISION OF LINEARITY ENHANCEMENT FOR RF COMMUNICATION DEVICES - A switch is provided, the switch including one or more banks of transistors fabricated on a substrate, wherein body terminals of the transistors in each bank are configured to be individually controlled to have respective body voltages. The values of the body voltages are determined to provide optimum linearity of power transfer by changing properties of the substrate with respect to the properties of the substrate when the body voltages are commonly biased at a value. | 06-19-2014 |
20140266420 | LOGARITHMIC AMPLIFIER WITH UNIVERSAL DEMODULATION CAPABILITIES - A logarithmic amplifier (LDA) is described that includes an amplifier configured to oscillate a modulated input signal, a feedback establishing a 180 degree phase shift between the amplifier input and the output and maintaining oscillation of the input signal, a parallel resonant circuit connected to the amplifier output causing the amplifier to resonate at or around a center frequency, and a controller connected to the amplifier input cyclically terminating oscillation of the input signal each time a pre-determined threshold of current is detected, the controller including a low pass filter configured to generate a second output signal having a repetition frequency. The LDA may be used for AM with or without a PLL and/or a superhetrodyne. The LDA may be implemented as a mixer and used for phase demodulation. The LDA may be used for phase demodulation. The LDA may be used in place of a low noise amplifier. | 09-18-2014 |
20140266962 | Power Combiner and Fixed/Adjustable CPL Antennas - An N-way radio frequency (RF) divider/combiner is formed as a combination including an input port electrically coupled to a first 2-way divider/combiner and a second 2-way divider/combiner. An antenna may be coupled to at least one port of the N-way divider. The antenna may be formed as a compound printed loop (CPL) antenna. The N-way RF divider/combiner may be configured to provide N inputs and M output ports, wherein N and M are integers and any of the M output ports and N input ports can be connected to any combinations of devices. Such devices may include, e.g., an antenna including but not limited to a CPL antenna, RF receive port, transmit port, amplifier, RF switch, low noise amplifier (LNA), oscillator, tuning circuit, matching circuit, lumped element circuit, active circuit, diode, adjustable inductive circuit, and adjustable capacitive circuit. | 09-18-2014 |
20140269860 | ADAPTIVE LINE EQUALIZER FOR IMPROVING DATA COMMUNICATION OVER LESS THAN PERFECT POWER LINES OR TRANSMISSION LINES - Systems and methods for improving data communication over less than perfect power lines or transmission lines are described. The systems and methods allow for pushing out electrically any null within a frequency range of interest and/or for lossless transmission by providing impedance matching between communication devices and the transmission line. This is achieved by implementing line equalizing modules within the transceivers, at the transmitter side and/or the receiver side, or by plugging, as a stand-alone module, into an electrical outlet within a building. The line equalizing module includes multiple inductor-capacitor cells coupled in cascade where multiple switches allow for selective and concurrent connection between the inductor-capacitor cells. In another embodiment, the line equalizing module includes variable inductor-capacitor cells. The line equalizing module provides a variable propagation delay that allows for stretching electrically the transmission line. Further improvement may achieve by adjusting the operational frequency using an up-conversion or down-conversion operation. | 09-18-2014 |
20140273898 | Frequency Selective Logarithmic Amplifier With Intrinsic Frequency Demodulation Capability - A regenerative selective logarithmic detector amplifier (LDA) can have integrated FM demodulation capabilities. It can receive a wired or wireless FM modulated signal and amplify or demodulate it with high sensitivity, high skirt ratio and minimized noise when compared to the prior art. When used in conjunction with other circuits such as a PLL or mixer, it can improve interference rejection and frequency selectivity and be locked on a precise channel in frequency and phase. The LDA produces intermittent oscillations that are self-quenched when reaching a given threshold. It also embeds the circuitry to perform direct FM discrimination. FM demodulation process is completed by a simple analog or digital frequency to voltage converter. This plus the fact that the instantaneous regeneration gain is low-medium permit to detect signals of small amplitudes buried in the noise. | 09-18-2014 |
20140287704 | COMBINATION OF STEERING ANTENNAS, CPL ANTENNA(S), AND ONE OR MORE RECEIVE LOGARITHMIC DETECTOR AMPLIFIERS FOR SISO AND MIMO APPLICATIONS - Logarithmic Detector Amplifiers (LDAs), multiple antennas, active antennas, and multiple active antennas and receivers are provided in a variety of configurations that are synchronized to reduce or eliminate interference so at to provide, a greater range and bandwidth between wireless routers and their clients in WLAN and WAN environments. | 09-25-2014 |
20150070058 | Logarithmic Detector Amplifier System for Use as High Sensitivity Selective Receiver Without Frequency Conversion - A logarithmic detector amplifying (LDA) system is provided for use as a high sensitivity receive booster or replacement for a low noise amplifier in a receive chain of a communication device. The LDA system includes an amplifying circuit configured to receive an input signal having a first frequency and generate an oscillation based on the input signal, a sampling circuit coupled to the amplifying circuit and configured to terminate the oscillation based on a predetermined threshold to periodically clamp and restart the oscillation to generate a series of pulses modulated by the oscillation and by the input signal, and one or more resonant circuits coupled with the amplifying circuit and configured to establish a frequency of operation and to generate an output signal having a second frequency, the second frequency being substantially the same as the first frequency. | 03-12-2015 |
20150070093 | Logarithmic Detector Amplifier System for Use as High Sensitivity Selective Receiver Without Frequency Conversion - A logarithmic detector amplifying (LDA) system is provided for use as a high sensitivity receive booster or replacement for a low noise amplifier in a receive chain of a communication device. The LDA system includes an amplifying circuit configured to receive an input signal having a first frequency and generate an oscillation based on the input signal, a sampling circuit coupled to the amplifying circuit and configured to terminate the oscillation based on a predetermined threshold to periodically clamp and restart the oscillation to generate a series of pulses modulated by the oscillation and by the input signal, and one or more resonant circuits coupled with the amplifying circuit and configured to establish a frequency of operation and to generate an output signal having a second frequency, the second frequency being substantially the same as the first frequency. | 03-12-2015 |