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9041539 RFID tag and method for receiving signal thereof  
Provided are a radio frequency identification (RFID) tag and a method for receiving a signal of the RFID tag. The RFID tag includes a voltage generator configured to generate a voltage signal from...
9042859 Dual carrier amplifier circuits and methods  
A circuit includes first and second transconductance stages that generate first and second currents, respectively, in response to an input signal. A current combiner circuit selectively couples...
9042851 Method and apparatus for an energy-efficient receiver  
One or more circuits may comprise at least one first-type analog-to-digital converter (ADC) and at least one second-type ADC. The circuit(s) may be operable to receive a plurality of signals, each...
9037104 Receiver that reconfigures between zero intermediate frequency and direct sampling based on channel conditions  
A wireless device for receiving wireless signals based on channel conditions is described. The wireless device includes a direct sampling path used when operating in a direct sampling mode. The...
9030342 Digital tuning engine for highly programmable delta-sigma analog-to-digital converters  
An integrated circuit includes a component calculator configured to compute at least one component value of a highly programmable analog-to-digital converter (ADC) from at least one application...
9031519 Node in a communication system with switchable antenna functions  
The present invention relates to a node (1) in a wireless communication system, the node (1) comprising at least a first and second antenna function (2, 3), and a first and second radio chain (4,...
9031529 Method and system for low-noise, highly-linear receiver front-end  
Aspects of a method and system for a low-noise, highly-linear receiver front-end are provided. In this regard, a received signal may be processed via one or more transconductances, one or more...
9030251 Mixer  
A frequency converter, capable of obtaining resonance characteristics having a high Q factor and a high multiplication signal and having a narrow-band frequency selectivity function, is provided...
9020073 Low intermediate frequency receiver  
One embodiment relates to a low intermediate frequency (IF) receiver. The low-IF receiver includes an analog front end that is configured to receive a modulated IQ data signal and provide an...
9020011 Enabling RX signal path synchronization and alignment signals in a highly integrated TX RFIC  
A transmit (TX) signal path circuit in a multiple-input, multiple-output (MIMO) transceiver responsive to a digital front end (DFE) for generating receive (RX) path phase alignment signals is...
9020018 Systems for calibration of wireless electronic devices  
A calibration system may be provided for calibrating wireless communications circuitry in an electronic device during manufacturing. The calibration system may include data acquisition equipment...
8989690 Method and apparatus for interference measurement and response  
A radio frequency front end of a receiver including a tunable filter receiving a signal; a controller for tuning the tunable filter; and an interference detection circuit configured to detect...
8989691 Impedance balancing for power supply rejection in single-ended receivers  
Power supply rejection in a single-ended receiver, through impedance balancing, is described. The single-ended receiver includes a first low noise amplifier and a second low noise amplifier. The...
8977519 Spectrum analyzer using multiple intermediate frequencies and multiple clock configurations for residual, spurious and image signal reduction  
A spectrum analyzer for measuring an RF signal over a selected frequency span configured to use multiple Intermediate Frequencies (IFs) for residual, spurious and image signal reduction. The...
8975946 Mixer  
A mixer includes a first node to which an intermediate frequency (IF) signal is input; first and second transistors that respectively have control terminals supplied with local signals having...
8977211 Systems and methods for calibrating harmonic rejection in switching mixers  
A system includes a radio frequency (RF) signal path configured to receive an input signal that includes at least one of a test signal and an RF signal. A local oscillator (LO) signal path is...
8971465 Receiver-side estimation of and compensation for signal impairments  
A receiver receives a repeating or periodic signal and, based on the signal, estimates a carrier frequency offset for the receiver. Based on the signal and the estimated carrier offset, an I/Q...
8971825 Fractional-N synthesizer  
One embodiment of the present invention provides a synthesizer. The synthesizer includes one or more tunable oscillators, a frequency-dividing circuit coupled to the tunable oscillators, and a...
8963610 Adaptable mixer and local oscillator devices and methods  
An adaptable mixer device is operable in a first mode and a second mode and includes a first set of mixer units operable in the first mode and a second set of mixer units operable in the second...
8958769 Direct conversion receiver for angle modulated signals  
A direct conversion receiver including an input stage, a frequency modulated local oscillator, a mixer stage, an output stage, and a DC blocker stage coupled between the mixer stage and the output...
8957722 Wideband double balanced image reject mixer  
A double balanced image reject mixer (IRM) can be configured to comprise: a common radio frequency (RF) port; four mixer devices, each comprising an intermediate frequency (IF) port, an RF port...
8952838 Time domain switched analog-to-digital converter apparatus and methods  
A time domain switching analog-to-digital converter apparatus and methods of utilizing the same. In one implementation, the converter apparatus comprises a carrier signal source, and at least one...
8947151 Frequency mixing circuit and method for suppressing local oscillation leakage in frequency mixing circuit  
Embodiments of the present invention disclose a frequency mixing circuit and a method for suppressing local oscillation leakage in the frequency mixing circuit, where a mixed input signal and a...
8938204 Signal generator circuit and radio transmission and reception device including the same  
The disclosed signal generator circuit has a four-phase signal generator circuit generating four-phase signals with a first frequency; an eight-phase signal generator circuit performing ½...
8937514 Local oscillator (LO) driver circuit for a mixer  
An improved local oscillator (LO) driver circuit for a mixer, the LO driver circuit includes a gain circuit responsive to LO input signals at a predetermined LO frequency range. At least a first...
8933745 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...
8923368 Radio frequency transceiver  
A radio frequency transceiver which can support various frequency conversion schemes is provided. The radio frequency transmitter includes a first low pass filter, a second low pass filter, a...
8923790 Wireless communication receiver and method thereof  
A wireless communication receiver includes a circuit, an analog-to-digital converter (ADC) and a processing circuit. The circuit receives a wireless signal and outputs an analog signal according...
8923788 Circuit and method for adjusting a digitally controlled oscillator  
In one embodiment the present invention includes a method of generating an oscillating signal at different frequencies. The method comprises configuring a digitally controlled oscillator (DCO)....
8923364 Transmitting data over discontiguous portions of radio frequency spectrum  
In general, the subject matter described in this disclosure can be embodied in methods, systems, and program products for transmitting data over discontiguous portions of radio frequency spectrum....
8913978 RTWO-based down converter  
A multiphase mixer using a rotary traveling wave oscillator is disclosed. In addition to the oscillator, the mixer includes first and second mixer circuits. The rotary traveling wave oscillator...
8909186 Receiver, method and mobile communication device  
A receiver includes a first amplifier and a second amplifier, a first mixer, a second mixer and a third mixer, a first baseband signal path and a second baseband signal path. A signal output of...
8901988 Balun mixer circuits  
A single-balanced balun mixer circuit includes a balun with a center tap connected to a differential pair with a tail resistor. The balun receives a first input signal and a second signal at the...
8903347 Simplified high frequency tuner and tuning method  
A disclosed method tunes a signal from a channelized spectrum having a predetermined channel spacing. A signal of interest having a predetermined maximum bandwidth is mixed with a local oscillator...
8892225 Wideband personal-radio recorder  
Methods and apparatuses for concurrently recording multiple radio channels. A recorder includes a wideband tuner having a complex mixer for converting a received wideband RF signal to a complex...
8886135 Apparatus, methods, computer programs and computer readable storage mediums for wireless communications  
An apparatus including a first port configured to receive signals from a transceiver and to receive a first antenna; a second port configured to receive signals from a transceiver and to receive a...
8885782 Device for broadband reception by autotransposition and application to the detection and characterization of radioelectric emissions  
A device is provided for use of an antennal base formed of two antennas which pick up the emissions present and produce two radioelectric signals S1 and S2. These two signals are used to produce...
8880018 Rotating harmonic rejection mixer  
In one embodiment, the present invention includes a mixer circuit to receive and generate a mixed signal from a radio frequency (RF) signal and a master clock signal, a switch stage coupled to an...
8874054 Broadband multi-channel radiofrequency receiver  
A device for receiving a broadband multi-channel radiofrequency signal includes a radiofrequency analog input stage connected to an intermediate-frequency conversion stage. The conversion stage...
8867671 Conversion circuit for converting complex analog signal into digital representation  
A conversion circuit (20) for converting a complex analog input signal having an in-phase, I, component and a quadrature-phase, Q, component resulting from frequency down conversion of a...
8868021 Ultra-broadband planar millimeter-wave mixer with multi-octave IF bandwidth  
In some embodiments, a system may include a passive uniplanar single-balanced millimeter-wave mixer. In some embodiments, a three-port diode-tee IC forming a mixer core is coupled between an end...
8862086 Mixer, mixer system and method  
A mixer is configured to sample a received input signal at a predefined oscillator frequency to generate a sampled input signal, and to switch a polarity of the sampled input signal at a...
8843075 Self-discovery of an RF configuration for a wireless system  
A RF distribution system determines its configuration and verifies the consistency of the determined configuration. Based on a device identifier, the RF distribution system may individually...
8838057 Harmonic rejection mixer architecture with reduced sensitivity to gain and phase mismatches  
A harmonic rejection mixer includes a first scaling circuit for scaling an RF signal to generate a plurality of scaled RF signals, a first switching stage for sampling the scaled RF signals using...
8838055 Dynamic sub-sampling radio frequency mixer systems and methods  
A mixer, a receiver, and a method provide dynamic sub-sampling mixer which adjust a sub-sampling rate based on power drain and performance. A mixer includes mixer circuitry receiving an input of a...
8838033 System and method for signal amplification  
Methods and systems for processing a signal with a corresponding noise profile are disclosed. Aspects of the method may comprise analyzing spectral content of the noise profile. At least one noise...
8836555 Circuit, sensor circuit, and semiconductor device using the sensor circuit  
A sensor circuit for obtaining physical quantities with a small margin of error even when the temperature varies is provided. The sensor circuit includes a sensor, a sampling circuit for obtaining...
8829973 Switch mode circulator isolated RF mixer  
A radio frequency mixer circuit comprises a first terminal, a local oscillator terminal and a second terminal, a wave propagation medium having a first and second end, a circulator coupling...
8824993 Applications of universal frequency translation  
Frequency translation and applications of same are described herein. Such applications include, but are not limited to, frequency down-conversion, frequency up-conversion, enhanced signal...
8805309 Down-converter  
A down-converter for receiving a multiband radio frequency signal (RF) and a local oscillator signal comprises a frequency divider and a heterodyne receive chain. The frequency divider is...