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| Number | Title | Issue Date |
| 8190116 | Methods and systems for down-converting a signal using a complementary transistor structure Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal are described herein. Briefly stated, such methods, systems, and apparatuses operate by receiving an EM signal and an aliasing signal having an aliasing ra... | 05/29/2012 |
| 8185082 | FM radio receiver A diversity FM radio receiver comprises two tuners for simultaneously tuning to the same FM channel. To avoid disturbances between the local oscillator signals of the tuners and to be able to use standard IF filters, one of the tuners operate with high-side LO injec... | 05/22/2012 |
| 8165556 | High dynamic range time-varying integrated receiver for elimination of off-chip filters A receiver circuit includes an amplifier, an output impedance, and a mixer. The amplifier is arranged to generate an amplifier output. The mixer has an input and an output respectively coupled to the amplifier and the output impedance. The output impedance sets freq... | 04/24/2012 |
| 8160533 | Self-calibrating mixer Mixer circuits (1) comprise mixers (2) for receiving input signals and oscillation signals and for outputting output signals. By providing the mixers (2) with loads (3) having adjustable load values and by introducing adjustors (4)... | 04/17/2012 |
| 8150358 | Method for performing dual mode image rejection calibration in a receiver A method is disclosed for performing dual mode image rejection calibration in a receiver. A first image correction factor is acquired using a first known signal associated with a first signal band during a startup mode. The first image correction factor has a plural... | 04/03/2012 |
| 8145176 | Front end and high frequency receiver having quadrature low noise amplifier A front end and a high frequency receiver (1) provided therewith are described, which front end comprises a quadrature low noise amplifier (2-1, 2-2) as a low noise amplifier. A high isolation between local oscillators (6-1, 6 | 03/27/2012 |
| 8140044 | Mixer circuit and method of operation A mixer circuit to mix a RF (Radio Frequency) signal with a LO (Local Oscillator) signal to generate an IF (Intermediate Frequency) signal including a dummy branch connected in parallel of a mixing branch, the dummy branch including a transconductance stage having a... | 03/20/2012 |
| 8135373 | Wireless communication apparatus A wireless communication apparatus includes a local oscillator that generates a plurality of LO (Local Oschillation) signals corresponding to frequencies of a plurality of input RF (Radio Frequency) signals, an accumulator that accumulates the plurality of LO signal... | 03/13/2012 |
| 8126421 | Radio receiver An apparatus configured to separate from a received radio frequency (RF) signal a first low-frequency signal and a second low-frequency signal having different phases, up-convert the first low-frequency signal and the second low-frequency signal into a first interme... | 02/28/2012 |
| 8116717 | Self-calibrating direct conversion transmitter with converting/steering device A steering and mixing module comprises a double balanced switch quad and a steering quad. The double balanced switch quad comprises a first output pair, and the first output pair is coupled to a first load stage. The steering quad comprises a second output pair, and... | 02/14/2012 |
| 8112057 | Sampling mixer and receiver It is an object of the present invention to provide a sampling mixer and a receiver, capable of optimizing a sampling rate of an output signal in response to a fractional band of a modulation band with respect to an RF frequency of the received signal. A sampling mi... | 02/07/2012 |
| 8103236 | Method and apparatus for processing signal A signal processing method and system are provided. The method includes receiving an input signal within a first frequency range, the input signal including a desired signal and an interference signal. The method includes down-converting the input signal to a second... | 01/24/2012 |
| 8095103 | Upconverter and downconverter with switched transconductance and LO masking An upconverter and a downconverter having good performance are described. In one design, the upconverter includes first, second, and third sets of transistors. The first set of transistors receives baseband signals and provides an upconverted signal. The second set ... | 01/10/2012 |
| 8081947 | Method and system for configurable active/passive mixer and shared GM stage Aspects of a method and system for configurable Active/Passive Mixer and Shared GM Stage may include configuring an RF mixer in frequency demodulator to operate in an active mode or a passive mode. An in-phase (I) processing path and a quadrature (Q) processing path... | 12/20/2011 |
| 8064868 | Dynamic current steering mixer A dynamic current steering mixer. The dynamic current steering mixer comprises a Gilbert cell mixer core, a pair of load devices, a dynamic current steering cell, and a transconductor cell. The Gilbert cell mixer core has first and second nodes, receives a first dif... | 11/22/2011 |
| 8064867 | RX dual-band mixer A dual-band input transceiver block is formed to operably receive one of a 2.4 GHz radio frequency signal or a 5.0 GHz radio frequency transceiver signal in a manner that minimizes duplication of circuitry and creates a combined circuit path for RF front end input s... | 11/22/2011 |
| 8060048 | Mixer arrangement A quadrature connected passive mixer arrangement for frequency converting analog signals from a first to a second frequency. The arrangement comprises two parallel connected mixers provided as transistors. First and second LO signals and their inverse signals having... | 11/15/2011 |
| 8050647 | Method and system for frequency feedback adjustment in digital receivers In RF transceivers, a method and a system for a frequency feedback adjustment in digital receivers are provided. A DC offset may result from the difference in frequencies between an RF transmitter and an RF receiver. An adjustment of the receiver's frequency may be ... | 11/01/2011 |
| 8045950 | Mixer circuit, receiving circuit, transmitting circuit, and method for operating a mixer circuit A mixing circuit is provided that includes a charge circuit, an oscillating circuit inlet step which is connected to a circuit which feeds an oscillating signal, and a signal inlet step. The oscillating circuit inlet step comprises at least two bipolar-transistors a... | 10/25/2011 |
| 8032104 | RF transceiver with undesired signal rejection and methods for use therewith A radio frequency (RF) transceiver includes an RF transmitter that generates an outbound RF signal at a carrier frequency that is based on a transmitter local oscillation. An RF front-end receives an inbound RF signal that includes a desired signal component that is... | 10/04/2011 |
| 8019311 | Systems and methods for DC component recovery in a zero-IF radio receiver Methods and systems for recovering a DC component in a zero-IF radio receiver are disclosed that involve receiving a frequency modulated radio frequency broadcast signal, down-converting the frequency modulated radio frequency broadcast signal directly to an origina... | 09/13/2011 |
| 8019310 | Local oscillator buffer and mixer having adjustable size Selectable sizes for a local oscillator (LO) buffer and mixer are disclosed. In an embodiment, LO buffer and/or mixer size may be increased when a receiver operates in a high gain mode, while LO buffer and/or mixer size may be decreased when the receiver operates in... | 09/13/2011 |
| 8019312 | DC offset calibration for a radio transceiver mixer An apparatus, method, and system for DC offset cancellation are provided herein. For instance, the apparatus can include a first commutating mixer switch and a second commutating mixer switch. The first commutating mixer switch can have a first input port configured... | 09/13/2011 |
| 8010074 | Mixer circuits for second order intercept point calibration A balanced mixer circuit (300, 400, 500, 600, 700 and 800) in a baseband receiver (202) includes an oscillator circuit (212), a mixer (214 and 215), a digital-to-analog converter (258 and 259) and a digital sig... | 08/30/2011 |
| 8000675 | Low cost method for receiving broadcast channels with a cellular terminal A wireless communication terminal includes a broadcast signal frequency converter that is communicatively coupled to the terminal's communication signal receiver and is configured to use its communication receiver to process received broadcast signals. In an exempla... | 08/16/2011 |
| 7957715 | Spectrally constrained local oscillator switching A method and frequency converter for a radio rapid frequency signal scanning and including a local oscillator signal synthesis source (112) producing a local oscillator signal (502) with local oscillator bursts (210). The local oscillator bursts... | 06/07/2011 |
| 7899429 | RF transceiver with undesired signal rejection and methods for use therewith A radio frequency (RF) transceiver includes an RF transmitter that generates an outbound RF signal at a carrier frequency that is based on a transmitter local oscillation. An RF front-end receives an inbound RF signal that includes a desired signal component that is... | 03/01/2011 |
| 7894789 | Down-conversion of an electromagnetic signal with feedback control Methods, systems, and apparatuses for down-converting an electromagnetic (EM) signal by aliasing the EM signal, and applications thereof are described herein. Reducing or eliminating DC offset voltages and re-radiation generated when down-converting an electromagnet... | 02/22/2011 |
| 7877075 | Signal mixer having a single-ended input and a differential output A single-ended-to-differential mixer includes a differential input circuit having a single-ended input. The differential input circuit is responsive to a single-ended input signal to generate first and second signals. The single-ended-to-differential mixer includes ... | 01/25/2011 |
| 7848727 | Integrated radio frequency module A radio frequency (RF) module includes a multilayer substrate having dielectric layers and metallization layers that include one or more circuit elements. The metallization layers are located between the dielectric layers. The RF module also includes a symmetric tra... | 12/07/2010 |
| 7835714 | Radio wave reception device, radio wave clock A received low-frequency standard radio wave, which is an amplitude modulation signal, is converted to an intermediate frequency signal Sa, and is output to a detection circuit and an AGC circuit. The detection circuit and AGC circuit generates an RF control signal ... | 11/16/2010 |
| 7809347 | Modular ASIC with crosspoint switch Provided is a digital signal processing device, specifically a modular application specific integrated circuit (“ASIC”), having a programmable crosspoint switch for facilitating data transfer and processing within the circuit. A programmable matrix element is op... | 10/05/2010 |
| 7801504 | Common-gate common-source transconductance stage for RF downconversion mixer In an embodiment, a wireless device receiver chain includes a mixer with a common-gate common-source (CGCS) input stage. Differential signals from an off-chip matching network may be input to the CGCS input stage of the mixer, which downconverts the signals to baseb... | 09/21/2010 |
| 7787852 | RF receiver with harmonic blocking in LO A RF receiver includes a low noise amplifier and blocking module, a down conversion module, and a local oscillation module. The low noise amplifier and blocking module is coupled to receive an inbound RF signal, wherein the amplified inbound RF signal includes a des... | 08/31/2010 |
| 7769360 | Adapter for the RF front end processor chip An adapter for RF front end processor chip wherein the RF front end processor chip includes a low noise amplifier which is used to receive a RF filter signal so as to generate a first signal. An adapter is used to receive a first signal so as to induce and generate ... | 08/03/2010 |
| 7756503 | High frequency module Heretofore, a plurality of packages were used in a high frequency module in which a plurality of waveguide terminals were positioned resulting in problems, such as degradation of characteristics in the connection lines between packages, lower ease of assembly when m... | 07/13/2010 |
| 7742751 | Filter scheme for receiver Provided are a method, system, and device directed to a receive path for a node in a communication system such as a Radio Frequency Identification (RFID) system. In one aspect, the receive path includes a filter operable in multiple modes and configurable to have di... | 06/22/2010 |
| 7734271 | Waveguide samplers and frequency converters Frequency converters include waveguides configured for a local oscillator (LO) signal, an intermediate frequency (IF) signal, and an RF signal. A multimode IF waveguide can be used for selectively coupling of an IF signal and to reduce signal contributions produced ... | 06/08/2010 |
| 7725092 | Dynamic current steering mixer A dynamic current steering mixer. The dynamic current steering mixer comprises a Gilbert cell mixer core, a pair of load devices, a dynamic current steering cell, and a transconductor cell. The Gilbert cell mixer core has first and second nodes, receives a first dif... | 05/25/2010 |
| 7693502 | Method and system for down-converting an electromagnetic signal, transforms for same, and aperture relationships Methods, systems, and apparatuses, and combinations and sub-combinations thereof, for down-converting an electromagnetic (EM) signal are described herein. Briefly stated, in embodiments the invention operates by receiving an EM signal and recursively operating on ap... | 04/06/2010 |
