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Telecommunications > Receiver Or Analog Modulated Signal Frequency Converter > Frequency Modifying Or Conversion > Particular Frequency Conversion Structure Or Circuitry

Particular Frequency Conversion Structure Or Circuitry

Particular Frequency Conversion Structure Or Circuitry patent applications listed include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.

06/19/14 - 20140171008 - Calibration
Techniques are described for calibration of a frequency converter for reducing a leakage-based direct current component at an output of the frequency converter. In an apparatus comprising a frequency converter arranged to perform frequency conversion on an input signal, a variable load arranged to act on at least one of...

05/08/14 - 20140128016 - Systems and methods for asynchronous re-modulation with adaptive i/q adjustment
Various embodiments provide for systems and methods for signal conversion of one modulated signal to another modulated signal using demodulation and then re-modulation. According to some embodiments, a signal receiving system may comprise an I/Q demodulator that demodulates a first modulated signal to an in-phase (“I″) signal and a quadrature...

02/27/14 - 20140057585 - Frequency converter
A frequency converter includes: a plurality of mixers each including a magnetoresistance effect device including a fixed magnetic layer, a free magnetic layer, and a nonmagnetic spacer layer sandwiched between the fixed magnetic layer and the free magnetic layer, when receiving a first high-frequency signal and a local second high-frequency...

07/11/13 - 20130178182 - System for processing composite wideband signals
According to one exemplary embodiment, a front-end system for processing a composite wideband signal comprises a pre-receiving unit including a multiplexer for separating the composite wideband signal into a plurality of filtered signals. The front-end system further comprises a plurality of discrete frequency band outputs corresponding to the plurality of...

05/23/13 - 20130130638 - Methods of receiving and receivers
Data is received that has been transmitted via a combination of radio frequency signals using carrier aggregation, each radio frequency signal occupying a respective radio frequency band, the bands being arranged in two groups separated in frequency by a first frequency region, the first of the two groups occupying a...

07/12/12 - 20120178398 - 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 reception, unified down-conversion and filtering, and combinations and applications of same....

12/08/11 - 20110300823 - Image rejection mixer and wireless communication device
An image rejection mixer and a communication device, which may suppress unwanted frequency components of a high power output assuming a fourth-order harmonic mixer. The image rejection mixer and communication device include first and second fourth-order harmonic mixers, a 90-degree IF synthesis distributor, a 90-degree LO distributor, and a 90-degree...

12/01/11 - 20110294454 - Programmable filter
The invention relates to a programmable filter for a radiofrequency receiver, embodiments disclosed including a filter (600) comprising an input (601) for receiving a radiofrequency signal, an output (602) for providing a filtered version of the input radiofrequency signal and a plurality of filter paths (603a-c) connected in parallel between...

06/30/11 - 20110159835 - Crystal-less clock generation for radio frequency receivers
Systems and methods of clock generation for radio frequency receiver. In radio frequency receiver, the system requires accurate local oscillating (LO) signal and system clocks for proper operation and to ensure high quality performance. In order to achieve accurate LO frequency and system clock, a crystal or and accurate reference...

05/05/11 - 20110105072 - Dual inductor circuit for multi-band wireless communication device
This disclosure describes a dual inductor circuit, which may be particularly useful in a mixer of a wireless communication device to allow the mixer to operate for two different frequency bands or in a multi-differential branch low noise amplifier wherein each of the differential branches possess a different set of...

04/21/11 - 20110092177 - 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 electromagnetic (EM) signal is also described herein. Down-converting a signal and improving receiver dynamic range is also...

04/14/11 - 20110086606 - Adaptive receivers
An adaptive receiver for receiving a radio frequency (RF) signal and converting the RF signal at an RF frequency FRF toward a low intermediate frequency FIF is disclosed. The adaptive receiver comprises a pair of band pass filters with a nominal center frequency Fc equal to FIF, a look-up table...

03/17/11 - 20110065411 - Method and apparatus for controlling a harmonic rejection mixer
In one embodiment, the present invention includes a method for receiving a radio frequency (RF) signal and mixing the RF signal with a master clock to obtain a mixed signal, cyclically rotating the mixed signal to each of N gain stages for at least one cycle of the master clock,...

01/06/11 - 20110003574 - Constant output dc bias circuit using an open loop scheme
Embodiments of the present invention provide constant output DC biasing circuits. Embodiments employ an open loop scheme, instead of a closed loop scheme as used in conventional circuits. In addition, embodiments generate a DC bias voltage that is independent of temperature, process, and power supply variations. Further, embodiments require low...

09/23/10 - 20100240335 - 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 output of the mixer circuit to rotatingly switch the mixed signal to multiple gain stages coupled...

09/16/10 - 20100233987 - Implementing a rotating harmonic rejection mixer (rhrm) for a tv tuner in an integrated circuit
In one embodiment, an apparatus includes mixer stages each coupled to receive a radio frequency (RF) signal from a corresponding tracking filter each configured for a band of frequencies. Each mixer stage is controllable to mix the RF signal with a divided master clock signal to obtain N multi-phase intermediate...

05/27/10 - 20100130157 - Rf isolation of low cost switch using shunt diode
The method and apparatus according to the present invention teaches a way to employ a pair of inexpensive switch IC's by improving isolation using a tuned diode shunt on the potential leakage path that exists between the two inputs when the IRD is in the legacy LNB Mode. In particular,...

05/06/10 - 20100112972 - Mixer with feedback
A method and system for increasing the compression point of a receiver by deriving a feedback signal from mixer output signals. The feedback signal prevents the receiver from going into compression on strong out-of-band or blocking signals, while enhancing the receiver gain at the desired frequency. The desired frequency coincides...

04/29/10 - 20100105349 - Rf signal sampling apparatus and method
The invention relates to an RF signal sampling apparatus for a wireless receiver, comprising a first transconductor circuit (Gmi), for converting received RF voltage signals into current signals, a first HR filter, for down-sampling and filtering the current signals, and an FIR filter, for further filtering, down-sampling and outputting the...

03/04/10 - 20100056094 - Noise cancellation circuit for a mixer device and related mixer device
A noise cancellation circuit for a mixer device includes a first signal terminal, coupled to a first output terminal, and a second signal terminal, coupled to a second output terminal of the RF input stage of the mixer device, a first variable current source with a first end coupled to...

02/11/10 - 20100035571 - Up-conversion mixer with signal processing
Systems and methods for implementing an up-conversion mixer with signal processing are disclosed....

02/11/10 - 20100035572 - Down-conversion mixer with signal processing
Systems and methods for implementing a down-conversion mixer with signal processing are disclosed....

02/04/10 - 20100029238 - Method of performing frequency conversion and associated frequency converter
A method of performing frequency conversion and associated frequency converter are provided. The method includes: receiving an input signal and a plurality of periodic ternary signals of the same frequency but different timings; generating a plurality of conversion signals using a plurality of conversion paths in response to the input...

12/24/09 - 20090318105 - Method and system for intra-printed circuit board communication via waveguides
Methods and systems for intra-printed circuit board communication via waveguides are disclosed and may include communicating one or more signals between or among a plurality of integrated circuits via one or more waveguides integrated on a printed circuit board. The integrated circuits may be bonded to the printed circuit board....

12/24/09 - 20090318106 - Method and system for intra-chip waveguide communication
Methods and systems for intra-chip waveguide communication are disclosed and may include configuring one or more waveguides in an integrated circuit and communicating one or more signals between blocks within the integrated circuit via the one or more waveguides. The one or more waveguides may be configured via switches in...

12/24/09 - 20090318107 - Dc offset, re-radiation, and i/q solutions using universal frequency translation technology
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 electromagnetic (EM) signal is also described herein. Down-converting a signal and improving receiver dynamic range is also...

12/03/09 - 20090298456 - 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 Sf1 and IF control signal Sf2 from the...

11/19/09 - 20090286501 - Apparatus method and computer program for configurable radio-frequency front end filtering
A radio use case is determined for concurrently operating radios of a multi-radio device and/or transmitter and receiver of a FDD radio. A local memory is accessed with the determined use case to find a high and/or a low frequency cutoff for the concurrent operation radio or transmitter/receiver. Control signals...

11/12/09 - 20090280768 - Method and system for inter ic communications utilizing a spatial multi-link repeater
Aspects of a method and system for inter integrated circuit (IC) communications utilizing a spatial multilink repeater are provided. In this regard, one or more circuits in an integrated circuit may be enabled to receive a signal and repeat the received signal to a plurality of target integrated circuits. The...

10/01/09 - 20090247109 - Method and system for communicating via a frequency shifting repeater
Aspects of a method and system for communicating via a frequency shifting repeater are provided. In this regard, a signal having a first frequency may be received, the received signal may be quadrature down-converted by mixing it with a pair of phase-quadrature local oscillator (LO) signals, the down-converted signals may...

09/17/09 - 20090233570 - Receiver front-end with low power consumption
A receiver includes a mixer with a first input, a second input and one output. An input signal (SRF(t)), which has a high frequency component fRF, is applied to the first input, and a local oscillator signal (SLOnew(t)) is applied to the second input of the mixer. The local oscillator...

08/20/09 - 20090209222 - Conversion architecture for residual spur avoidance
A method and apparatus for residual spur avoidance is disclosed. One embodiment comprises a method of generating a first local oscillator signal, mixing the first local oscillator signal with a radio frequency signal to generate an intermediate frequency signal, filtering the intermediate frequency signal at a band-pass frequency, mixing the...

08/06/09 - 20090197560 - Rf transmitter and integrated circuit with programmable filter module and methods for use therewith
A radio frequency (RF) transmitter includes a transmitter processing module that generates a processed signal based on outbound data, wherein the processed signal includes one of: a baseband signal and a low intermediate frequency signal. An up-conversion module up-converts the processed signal to generate an up-converted signal. A programmable filter...

06/18/09 - 20090156156 - Gilbert mixers with improved isolation
The employment of cascading in connection with improving mixer isolation in a Gilbert mixer circuit. In this vein, there is broadly contemplated herein, inter alia, the provision of a mixer suitable for use in a direct-conversion radio receiver operating in the 57-64 GHz industrial, scientific, and medical (ISM) band. Such...

06/11/09 - 20090149149 - Dual gilbert cell mixer with offset cancellation
An electronic device includes a first mixer portion having a first stage and a second stage, and a second mixer portion having a first stage and a second stage. A first electrical path is coupled to the first mixer portion and the second mixer portion, and a second electrical path...

05/21/09 - 20090131008 - Receiver comprising a radiofrequency splitter
A receiver comprises a radio frequency splitter (SPL) and respective tuning elements (D11, D21, D31), which are coupled to respective outputs (O1, O2, O3) of the radio frequency splitter One of these tuning elements (D11) has a control terminal coupled to receive a direct current control signal (VA) via a...

04/30/09 - 20090111419 - Direct conversion with variable amplitude lo signals
Techniques to reduce LO leakage by controlling the amplitude of LO signal based on the level of output signal after the frequency conversion process. An LO generator receives a VCO signal and generates an LO signal having a variable amplitude and a frequency that is related to the frequency of...

04/23/09 - 20090104887 - Log-antilog mixer circuit and method for producing frequency conversion
According to one exemplary embodiment, a method for producing frequency conversion of a communication signal comprises performing a logarithmic transformation of the communication signal to form a logarithmically transformed communication signal, adding the logarithmically transformed communication signal to a logarithmic local oscillator signal, to form a sum signal, and performing...

03/26/09 - 20090081984 - Method and apparatus for spur reduction in a frequency synthesizer
A frequency synthesizer includes: a frequency source generating a reference signal that includes a plurality of pulses having periodicity based on a reference frequency; a feedback loop that includes, a phase detector circuit, a loop filter, a controlled oscillator that generates an output signal at an output, and a loop...

03/05/09 - 20090061810 - Frequency multiplier device
A frequency multiplier device comprises a first signal combiner having a first port for receiving a first input signal having a first frequency f1 and a second port for receiving a second input signal having a second frequency f2, the first signal combiner configured to provide an output signal having...

03/05/09 - 20090061811 - Multi-frequency synthesizing apparatus and method for multi-band rf receiver
A frequency synthesizing apparatus and method for a multi-band radio frequency (RF) receiver is provided. The frequency synthesizing apparatus includes a simple circuit configuration with a single SSB mixer and thus, may synthesize six high frequency signals. Signals to be inputted into the SSB mixer include a first signal and...