Entries |
Document | Title | Date |
20080224740 | FREQUENCY MIXER HAVING FERROMAGNETIC FILM - A frequency conversion device, which may include a radiofrequency (RF) mixer device, includes a substrate and a ferromagnetic film disposed over a surface of the substrate. An insulator is disposed over the ferromagnetic film and at least one microstrip antenna is disposed over the insulator. The ferromagnetic film provides a non-linear response to the frequency conversion device. The frequency conversion device may be used for signal mixing and amplification. The frequency conversion device may also be used in data encryption applications. | 09-18-2008 |
20080284472 | APPARATUS FOR ADJUSTING BANDWIDTH AND CENTRAL FREQUENCY OF OSCILLATING SIGNAL GENERATED FROM CHAOTIC SIGNAL AND METHOD FOR GENERATING SIGNAL THEREOF - A communication apparatus and a method for generating a signal thereof are provided. The communication apparatus adjusts a bandwidth or central frequency of an oscillating signal which is generated from a chaotic signal to be used in the modulation, or adjusts both the bandwidth and the central frequency. Accordingly, it is possible to transform the oscillating signal generated from the chaotic signal more diversely and thus to modulate an information signal more diversely and more adaptively. | 11-20-2008 |
20090021288 | Signal Delay Element, Method and Integrated Circuit Device for Frequency Adjustment of Electronic Signals - The invention relates to frequency adjustment of electronic signals. The method comprises the steps of providing an output signal of a frequency generator with a first frequency as input signal for a signal delay element providing an edge of said input signal of said signal delay element; delaying said input signal by adding a delay to each cycle of said input signal until the delayed output signal of the signal delay element is aligned to an edge of said input signal. | 01-22-2009 |
20090058475 | APPARATUS AND METHOD FOR DIGITAL FREQUENCY UP-CONVERSION - Disclosed is an apparatus and a method for up-converting frequencies of digital Intermediate Frequency (IF) signals input through at least two paths, and then outputting IF signals to which at least two frequencies are allocated in a communication system. The apparatus includes Serializer/Deserializers (SerDeses), down-converters, up-converters, a signal adder, a Digital-to-Analog Converter (DAC), and a Band-Pass Filter (BPF), etc. In relation to digital IF signals respectively input through at least two paths, first, the frequency down-conversion is performed, and then, the up-conversion to relatively low frequencies is performed. | 03-05-2009 |
20090167372 | Automatic Adjustment Circuit, and Filter Circuit - An automatic adjustment circuit comprises a replica ( | 07-02-2009 |
20090195271 | FREQUENCY MODE SELECTION DISCRIMINATOR AND LOW PASS FILTER - A circuit is described that detects high and low frequencies and additional clock frequencies and outputs a signal that indicates a high, a low frequency or an additional mode. When in the low frequency low frequency mode signals are regenerated free of any high frequency signals from appearing on the filtered low frequency clock line. The rising and falling edges of the input clock are low pass filtered separately and then combined to generate a low frequency clock or the additional input clock and that retains the input clock pulse width and duty cycle. | 08-06-2009 |
20090201055 | Methods and Apparatus For Managing LSI Power Consumption and Degradation Using Clock Signal Conditioning - Methods and apparatus for distributing clock signals to an integrated circuit provide for: producing, in a slow mode of operation, a first clock signal having at least first and second on-pulses of differing first and second on-times each period, respectively, where a sum of the first and second on-times is approximately equal to a sum of off-times each period; distributing the first clock signal through a distribution tree and terminating at a plurality of final buffer circuits that produce respective distributed clock signals from which respective second clock signals are produced to supply at least a portion of the integrated circuit; deleting the second on-pulse from each of the distributed clock signals each period to produce the respective second clock signals, the second clock signals each including at least a portion of the first on-pulse, but none of the second on-pulse each period. | 08-13-2009 |
20090206889 | Method and Apparatus for Controlling Power Surge in an Integrated Circuit - A method for ramping a high-speed clock to control power surge in an integrated circuit when transitioning from a low power holdstate to an operational state where the integrated circuit includes selected logic circuits adapted to be maintained in the holdstate. A core clock signal including a plurality of core clock pulses is gated with a ramping signal. The ramping signal includes a series of staged signals having gating pulses. Each staged signal is separated by a ramp interval, where the series of staged signals successively enables increasing numbers of clocking pulses from the core clock signal to be transmitted to a holdstate output until a predetermined operational core clock frequency is transmitted to the holdstate output bringing the integrated circuit to the operational state. | 08-20-2009 |
20090278573 | Band Converted Signal Generator and Band Extender - A band converted signal generator includes a low range characteristic application section ( | 11-12-2009 |
20090302899 | DIFFERENTIAL INVERSE ALIASING DIGITAL TO ANALOG CONVERTER - This invention relates to a process for producing a pulsed sampled waveform comprising generating a baseband signal representing the integral of a desired output waveform; sampling and differentiating the baseband signal to produce frequency images of the baseband spectrum at multiples of the sampling rate; employing an analog bandpass filter to pass the spectral image centered at the desired up-conversion frequency band. This invention also relates to an apparatus for creating a high frequency output waveform signal comprising a means for generating a baseband signal representing the integral of a desired output waveform; a means for sampling the baseband signal; a means for generating a time delayed baseband signal by Δt; a means for inverting the delayed baseband signal; a means for summing the inverted the delayed baseband signal with the sampled baseband signal; a means for filtering to pass the high frequency signal. | 12-10-2009 |
20100060328 | REDUCTION OF SEMICONDUCTOR STRESSES - A method of reducing thermal stresses of a semiconductor component in a frequency converter, an arrangement in a frequency converter, and a frequency converter, wherein the semiconductor component is attached to a cooling element for cooling the semiconductor component and one or more resistive elements are attached to the cooling element. In the method, the cooling element is heated by the one or more resistive elements attached thereto by supplying current from the frequency converter through the one or more resistive elements for obtaining an elevated lowest temperature for the semiconductor component and thereby reducing the amount of temperature change between the highest and the lowest temperatures in the semiconductor component during use of the frequency converter. | 03-11-2010 |
20100207669 | FREQEUNCY ADJUSTING APPARATUS AND THE METHOD THEREFOR - The invention relates to a frequency adjusting apparatus and the method therefor comprising an adjusting module, a comparing module, a processing module and an operating module. The adjusting module generates a frequency signal according to a predetermined signal after receiving a trigger signal and generates N adjusting signal according to N processing signal. The comparing module compares the N adjusting signal with the predetermined signal according to a predetermined manner and generates N comparing result. The processing module generates N processing signal according to the N comparing result. The operating module executes a specific operation with M adjusting signal of the N adjusting signal matching the predetermined rule and generates a operation signal, wherein the frequency of the operation signal is approximately equal to which of the predetermined signal. Wherein N and M are natural numbers and N≧M≧1, the adjusting module adjusts the operation frequency according to the operation signal. | 08-19-2010 |
20100207670 | FREQUENCY ERROR DETECTING CIRCUIT, FREQUENCY ERROR DETECTING METHOD, AND FREQUENCY CORRECTING CIRCUIT - A frequency error detecting circuit includes: an oscillator; a frequency converting unit for a received signal on the basis of the oscillation output and output the received signal; a time-to-frequency converting unit configured to convert the output of the frequency converting unit into a frequency domain signal; a frequency shift determining unit configured to determine presence or absence of a frequency shift between an output frequency of the frequency converting unit and a predetermined carrier frequency; and a control unit configured to repeat frequency conversion processing and time-to-frequency conversion processing while controlling an oscillation frequency of the oscillator on the basis of a determination result of the frequency shift determining unit and cause the output frequency of the frequency converting unit to converge on a predetermined value to thereby detect a frequency error between the frequency of the received signal and the predetermined carrier frequency. | 08-19-2010 |
20100264959 | FREQUENCY CONVERSION APPARATUS AND FREQUENCY CONVERSION METHOD - To provide a frequency conversion device which uses a magneto-resistive device and thereby can correspond to a Si-based MMIC and a GaAs-based MMIC. A frequency conversion apparatus according to the present invention includes: a frequency conversion device made of a magneto-resistive device including a magnetic free layer, an intermediate layer, and a magnetic pinned layer; a magnetic field applying mechanism for applying a magnetic field to the frequency conversion device; a local oscillator for applying a local oscillation signal to the frequency conversion device; and an input terminal electrically connected to the frequency conversion device, and used to input an external input signal. | 10-21-2010 |
20110057688 | Frequency Reference Signal Generating System and Method for Frequency Synthesizers - A system for generating a frequency reference signal comprising an oscillator, a direct digital synthesizer coupled to the oscillator and configured to receive a signal output from the oscillator, a digital to analog converter coupled to the direct digital synthesizer and configured to receive a sampled signal from the direct digital synthesizer and to convert the sampled signal to an analog waveform, and a bandpass filter coupled to the digital to analog converter and configured to select an aliased output signal from the digital to analog converter at a Nyquist zone other than a first Nyquist zone and to output the frequency reference signal. | 03-10-2011 |
20110068834 | ELECTRO-MECHANICAL OSCILLATING DEVICES AND ASSOCIATED METHODS - Electro-mechanical oscillating devices designed to convert the frequency of electrical signal(s) and methods associated with the same are described. One example of such a frequency converting device is a mixer. | 03-24-2011 |
20110068835 | CIRCUIT AND METHOD - Implementations related to circuits including an oscillator and a switch-mode DC/DC converter are presented herein. | 03-24-2011 |
20110128050 | DEVICE AND METHOD FOR REDUCING HARMFUL EFFECTS OF ELECTROMAGNETIC RADIATION - The present invention relates to a device and a method for educing harmful effects to people of a first alternating electromagnetic field that is characterised by a first frequency. According to the invention, the device comprises extraction means for extracting electric power from the first alternating electromagnetic field and transmission means for transmitting a second alternating electromagnetic field that is characterised by a second frequency. During operation, the transmission means are supplied with the electric power extracted by the extraction means, and the first and the second frequency are different. | 06-02-2011 |
20110148478 | FREQUENCY CONVERSION MIXER - Provided is a frequency conversion mixer. The frequency conversion mixer includes a transconductance stage, a switching stage, a load stage, a current bleeding circuit, and a bias stage. The transconductance stage receives an RF signal, and outputs a current corresponding to a voltage of the RF signal. The switching stage switches the current which is outputted from the transconductance stage in response to a local oscillation signal, for frequency conversion the RF signal into an intermediate frequency (IF) signal. The load stage is connected between the switching stage and a supply voltage terminal. The current bleeding circuit is connected parallel with the switching stage, especially, embodying inverter structure with transconductance stage to get not only current bleeding effect but also current reuse effect, and one resonant inductor for reducing noise which is generated in parasitic capacitance at node between transconductance stage and switching stage. The bias stage is connected between the transconductance stage and a ground terminal, and has the switched biasing technique for allowing not only the stable bias current but also lowering the flicker noise. | 06-23-2011 |
20110148479 | SIGNAL RECEIVING DEVICE AND SIGNAL RECEIVING METHOD USING SAME, AND SIGNAL SUPPLYING UNIT AND SIGNAL SUPPLYING METHOD USING SAME - A signal receiving device is provided which can prevent the imbalance occurring between in-phase and quadrature signals. A polarity of a local oscillator output signal to be outputted from a local oscillator | 06-23-2011 |
20110215841 | DEVICE FOR AND A METHOD OF GENERATING SIGNALS | 09-08-2011 |
20110241739 | ELECTRONIC CIRCUIT - A circuit includes: a first line to which input and output signal terminals are connected; a first transistor having a first terminal connected to the first line, a second terminal connected to a ground potential, and a control terminal supplied with a first oscillation signal, the first transistor outputting the first signal and its harmonic component; a second transistor having a first terminal connected to the first line, a second terminal connected to the ground potential, and a control terminal supplied with a second oscillation signal, the second transistor outputting the second signal and its harmonic component; a first harmonic generator connected to the control terminal of the first transistor and generates a harmonic component including the harmonic component by the first transistor; and a second harmonic generator connected to the control terminal of the second transistor and generates a harmonic component including the harmonic component by the second transistor. | 10-06-2011 |
20120056649 | METHOD AND APPARATUS FOR REGENERATING SAMPLING FREQUENCY AND THEN QUICKLY LOCKING SIGNALS ACCORDINGLY - A receiving method and apparatus is disclosed. The method comprising steps of: receiving a plurality of data according to a symbol clock signal, and reading out the plurality of data according to a first clock signal and generating a water level; receiving a second clock signal so as to generate a third clock signal, and adjusting the speed of the third clock signal according to the water level; determining a sampling frequency of the plurality of data according to a data amount of the plurality of data during a unit time period or parameters of the plurality of data; and dividing the third clock signal by a dividing value or multiplying the third clock signal by a multiplying value so as to obtain the first clock signal and adjust the water level by a clock generator. | 03-08-2012 |
20120139590 | Integrated circuit, clock gating circuit, and method - An integrated circuit | 06-07-2012 |
20120146690 | FREQUENCY DOUBLER/INVERTER - Here, an apparatus is provided. The apparatus comprises a first supply rail, a second supply rail, a first ambipolar transistor (which is coupled to the first supply rail at its drain and which receives a reference voltage at its gate), a second ambipolar transistor (which is coupled to the first supply rail at its drain and which receives an input signal at its gate), a current source (which is coupled between the sources of the first and second ambipolar transistors and the second supply rail), and an output circuit (which is coupled to drain of the first ambipolar transistor). In operation, the output circuit provides an output signal having a frequency that is about twice the frequency of the input signal. | 06-14-2012 |
20120182052 | Device for providing electrical signals with high immunity to noise - Device for providing electrical signals with high immunity to noise. The invention develops a device for processing electrical signals ( | 07-19-2012 |
20120187983 | FREQUENCY GENERATOR - A mechanical frequency generator has a first mechanical resonator and a second mechanical resonator and a circuit connected with the first and second mechanical resonators. The first and second mechanical resonators having substantially the same resonator frequency coefficients as a function of an environment of the first and the second mechanical resonators. The first mechanical resonator differing in size from the second mechanical resonator. The circuit adapted to generate a difference frequency signal responsive to the first and second mechanical resonator frequency signals and based on the first and the second predetermined resonant frequencies. | 07-26-2012 |
20120194227 | JITTERING FREQUENCY CONTROL CIRCUIT AND METHOD FOR A SWITCHING MODE POWER SUPPLY - A jittering frequency control circuit and method for a switching mode power supply enlarge the uttering frequency range of the switching frequency of the switching mode power supply when the switching mode power supplier enters a frequency reduction mode, to improve the electro-magnetic interference of the switching mode power supply operating with the frequency reduction mode. | 08-02-2012 |
20120274367 | Front-End Transceiver - In an embodiment, a front-end transceiver may be provided. The front-end transceiver may include a receiver path, including a first receiver frequency converter configured to convert a received signal with a receiver frequency into a first receiver intermediate signal with a first receiver intermediate frequency; and a receiver direct conversion stage coupled to the first receiver frequency converter so as to receive the first receiver intermediate signal. The front-end transceiver may further include an oscillator signal generator respectively coupled to the first receiver frequency converter and to the receiver direct conversion stage so as to provide a first oscillator signal with a first oscillator frequency to the first receiver frequency converter and a first stabilizing signal with a first stabilizing frequency to the receiver direct conversion stage; wherein the oscillator signal generator may be configured so that the first oscillator frequency of the first oscillator signal may be selected such that any integer multiple of the first oscillator frequency of the first oscillator signal may be different from any integer multiple of the receiver frequency of the received signal. The front-end transceiver may also include a transmitter path. | 11-01-2012 |
20120313671 | SIGNAL GENERATION DEVICE AND SIGNAL GENERATION METHOD - A signal generation device includes: filter banks that perform sampling frequency conversion with respect to an input signal of a predetermined sampling frequency, and generate a signal obtained after the sampling frequency conversion as an output signal; a control-signal generation unit that selects the filter banks to be used based on a sampling-frequency setting value indicating a sampling frequency of the output signal: and a switching unit selects the filter banks based on a result of selection by the control-signal generation unit. | 12-13-2012 |
20130009677 | CONTROLLING A STATE OF A QUBIT ASSEMBLY - Methods and apparatuses are provided for controlling the state of a qubit. A qubit apparatus includes a qubit and a load coupled to the qubit through a filter. The filter has at least a first pass band and a first stop band. A qubit control is configured to tune the qubit to alter an associated transition frequency of the qubit from a first frequency in the first stop band of the filter to a second frequency in the first pass band of the filter. | 01-10-2013 |
20130069695 | Frequency Reference Signal Generating System and Method for Frequency Synthesizers - A system for generating a frequency reference signal comprising an oscillator, a direct digital synthesizer coupled to the oscillator and configured to receive a signal output from the oscillator, a digital to analog converter coupled to the direct digital synthesizer and configured to receive a sampled signal from the direct digital synthesizer and to convert the sampled signal to an analog waveform, and a bandpass filter coupled to the digital to analog converter and configured to select an aliased output signal from the digital to analog converter at a Nyquist zone other than a first Nyquist zone and to output the frequency reference signal. | 03-21-2013 |
20130194007 | ASYNCHRONOUS SAMPLING FREQUENCY CONVERSION DEVICE, METHOD, AND COMPUTER PROGRAM PRODUCT - An asynchronous sampling frequency conversion device includes: a storage unit configured to store input digital signals; a data specifying unit configured to specify first data and second data based on a ratio of a sampling frequency of the input digital signal to a sampling frequency of an output digital signal, the first data being sampled at a sampling timing immediately before an i | 08-01-2013 |
20130285714 | TUNER - A center frequency F | 10-31-2013 |
20130285715 | Transconductance-Enhancing Passive Frequency Mixer - A transconductance-enhancing passive frequency mixer comprises a transconductance amplification stage, a frequency mixing stage, and an output transresistance amplifier. The transconductance amplification stage has a pre-amplification transconductance-enhancing structure, so that the transconductance is greatly enhanced, thereby obtaining the same transconductance value at a lower bias current. A radio-frequency current is modulated by the frequency mixing stage to generate an output mid-frequency current signal. The mid-frequency current signal passes through the transresistance amplifier, to form voltage output, and finally obtain a mid-frequency voltage signal. The transresistance amplifier has a transconductance-enhancing structure, thereby further reducing input impedance, and improving current utilization efficiency and port isolation. The frequency mixer has the characteristics of low power consumption, high conversion gain, good port isolation, and the like. | 10-31-2013 |
20130293269 | METHOD AND APPARATUS FOR CONTROLLING CHIP PERFORMANCE - Embodiments of the present invention disclose a method and an apparatus for controlling chip performance, and relate to the field of communications technologies, which solves a problem in the prior art that a chip is reset or performance is greatly decreased as long as a temperature of the chip is higher than a preset threshold. The method includes: obtaining a working temperature of a chip; when the working temperature of the chip reaches one of multiple preset temperature thresholds, obtaining, according to preset correspondence between a temperature threshold and a chip performance control policy, a chip performance control policy that corresponds to the one of the multiple temperature thresholds; and controlling working of the chip according to the control policy. The present invention is applicable to an electronic device to which a chip is applied, such as a desktop computer or a notebook computer. | 11-07-2013 |
20130293270 | SWITCH CONTROLLER, SWITCH CONTROL METHOD, AND POWER SUPPLY DEVICE COMPRISING THE SWITCH CONTROLLER - The present invention relates to a switch controller, a switch control method, and a power supply using the switch controller. | 11-07-2013 |
20130300463 | Method and Apparatus for Monitoring Timing of Critical Paths - An apparatus for monitoring timing of a plurality of critical paths of a functional circuit includes a plurality of canary circuits, each configured to be coupled to a critical path of a functional circuit for detecting and outputting critical timing events. Each canary circuit includes an adjustable delay element and an analyser circuit for receiving a count of the critical timing event output from at least one of the plurality of canary circuits for a predetermined time interval for a plurality of delay values of the adjustable delay elements and for determining a probability distribution of critical timing events of the at least one of the plurality of critical paths for the predetermined time interval for the plurality of delay values. | 11-14-2013 |
20130321040 | METHOD AND SYSTEM FOR USING DEMAND RESPONSE TO PROVIDE FREQUENCY REGULATION - A frequency regulation system includes a sensor to detect a power grid signal and a frequency deviation identification module to determine a power grid frequency deviation from the power grid signal. A demand response module identifies an operating schedule for available demand response resources based on frequency deviation set points and ramp rates and a load control module controls the available demand response resources based on the operating schedule. | 12-05-2013 |
20130321041 | ELECTRONIC DEVICE AND METHOD FOR CONTROLLING TEMPERATURE THEREOF - A method for controlling a temperature of an electronic device which includes a semiconductor chip is provided. The temperature control method includes measuring a temperature of a measurement point using the electronic device, comparing the temperature of the measurement point with a target temperature varying according to a period of time when the semiconductor chip operates using the electronic device, and decreasing a clock frequency of the semiconductor chip using the electronic device when the temperature of the measurement point is higher than the target temperature. | 12-05-2013 |
20130342244 | SIGNAL PROCESSOR AND SIGNAL PROCESSING METHOD - A signal processor includes: a plurality of frequency converters which perform frequency conversion of input signals to output converted signals; and an output section which combines the converted signals output from the plurality of frequency converters and outputs a composite signal, wherein the plurality of frequency converters are formed in a one-chip semiconductor chip, and the plurality of frequency converters perform frequency conversion into converted signals in different frequency bands. | 12-26-2013 |
20140002147 | CLOCK CORRECTION CIRCUIT AND CLOCK CORRECTION METHOD | 01-02-2014 |
20140049298 | FREQUENCY GENERATION APPARATUS AND FREQUENCY GENERATION METHOD - There are provided a frequency generation apparatus and a frequency generation method. The frequency generation apparatus includes a current generation unit varying an amount of current with respect to a temperature change; a capacitor in which charges are charged by the current generation unit; a discharge circuit unit comparing a charging voltage of the capacitor with a previously set first reference voltage and discharging the capacitor; and an output signal generation unit comparing the charging voltage of the capacitor with a previously set second reference voltage and generating an output signal, wherein the current generation unit varies the amount of current so as to maintain a constant frequency. | 02-20-2014 |
20140191785 | APPARATUS AND METHODS FOR FREQUENCY COMPENSATION USING TWO COUNTERS - A frequency compensation apparatus includes a first counter setting a reference period using a main clock, a second counter sensing a change in the frequency of a sub clock using the reference period, and a frequency compensator providing a compensated frequency using information on the changed frequency of the sub clock. Related methods are also described. | 07-10-2014 |
20140340129 | FREQUENCY CONTROL SYSTEM WITH DUAL-INPUT BIAS GENERATOR TO SEPARATELY RECEIVE MANAGEMENT AND OPERATIONAL CONTROLS - Methods and systems to control an output frequency relative to a reference frequency. A frequency control system includes a dual-input bias generator to separately receive management and operational controls. The bias generator includes a first bias generator circuit to generate a bias control based on a difference between the management control and a bias feedback reference during a first mode of operation, a second bias generator circuit to generate the bias control based on a difference between the operational control and the bias feedback reference during a second mode of operation, and a bias feedback reference circuit to generate the bias feedback reference based on the bias control. The first mode may include a characterization and/or a start-up mode. The second mode may include an operational mode, such as a feedback-controlled mode. | 11-20-2014 |
20150048868 | CIRCUITS FOR GENERATING SWEEP FREQUENCY SIGNAL - A circuit to generate a sweep frequency signal that includes a reference frequency source to generate a reference frequency signal, a first frequency combination circuit coupled to the reference frequency source, and operative to generate a sweep frequency signal in a first frequency band based on the reference frequency signal, a second frequency combination circuit coupled to the reference frequency source, and operative to generate a sweep frequency signal in a second frequency band different from the first frequency band based on the reference frequency signal, a multiple-level switch coupled to outputs of the first frequency combination circuit and the second frequency combination circuit, and a control circuit controlling the first and second frequency combination circuits and the multiple-level switch to output the sweep frequency signal in the first frequency band and the sweep frequency signal in the second frequency band at an output of the multiple-level switch alternately. | 02-19-2015 |
20160094214 | FREQUENCY MODULATION BASED VOLTAGE CONTROLLER CONFIGURATION - A voltage converter can be switched among two or more modes to produce an output voltage tracking a reference voltage that can be of an intermediate level between discrete levels corresponding to the modes. One or more voltages generated from a power supply voltage, such as a battery voltage, can be compared with the reference voltage to determine whether to adjust the mode. The reference voltage can be independent of the power supply voltage. Further, the voltage converter may implement frequency modulation and a pulse skipping mode to improve the efficiency of switching operational states of the voltage converter. | 03-31-2016 |
20160181523 | REAL-SPACE CHARGE-TRANSFER DEVICE AND METHOD THEREOF | 06-23-2016 |