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7616939 Receiver and electronic device using the same  
A receiver and an electronic device are provided that suppress deterioration of the signal waveform of a symbol. The receiver has a filter that sends out an output signal having a symbol at an...
7599675 Method and apparatus for receiving radio frequency signals  
A frequency conversion receiver comprises a passive mixer, a Low-Noise Amplifier (LNA) and a balun. The low-noise amplifier generates an amplified single-ended signal responsive to a single-ended...
7593707 Method and system for compensation of DC offset in an RF receiver  
Aspects of compensating for DC offset in an RF receiver may comprise sampling data from at least one of a plurality of output paths, selecting a sampled data and generating at least one feedback...
7587192 Balanced mixer with calibration of load impedances  
A calibration device (CC) is coupled to a balanced circuit device (MC) comprising first and second outputs respectively provided with first (Z 1 ) and second (Z 2 ) load impedance means. This...
7580483 Trimming of local oscillation in an integrated circuit radio  
A method and apparatus for trimming of a local oscillation within a radio frequency integrated circuit (RFIC) includes processing that begins when an RFIC receives a radio frequency (RF) signal...
7579912 Method and system for multiple tuner application using a low noise broadband distribution amplifier  
An active splitter circuit arrangement includes a first amplification module having a number of first input ports and first output ports. The first amplification module is configured to provide...
7555275 Systems, methods and devices for dual closed loop modulation controller for nonlinear RF amplifier  
In accordance with various exemplary embodiments of the present invention, systems, methods and devices are configured to facilitate RF envelope amplitude control. For example, a RF envelope...
7545889 Blocker performance in a radio receiver  
Configuring a multiple stage band pass filter of a radio frequency receiver commences by setting a corner of a low pass mixer output filter that receives a down sampled analog information signal....
7515895 System and method for on-chip filter tuning  
An integrated receiver with channel selection and image rejection substantially implemented on a single CMOS integrated circuit is described. A receiver front end provides programable attenuation...
7512391 Self-aligning resonator filter circuit and wideband tuner circuit incorporating same  
A self-aligning resonator filter, a self-aligning coupled resonator filter circuit, and a television tuner circuit incorporating the filter and the circuit are disclosed herein. The self-aligning...
7499695 Configurable all-digital coherent demodulator system for spread spectrum applications  
A configurable all-digital coherent demodulator system for spread spectrum digital communications is disclosed herein. The demodulator system includes an extended and long code demodulator (ELCD)...
7499694 Tuner alignment  
In a method of tuning a receiver for a digital signal (MPEG2-TS), an input signal (RF-in) is filtered (In-filt, Band-filt) to obtain a processed signal, a digital figure of merit (BER) is...
7460587 Electronic circuit for performing fractional time domain interpolation and related devices and methods  
A clock offset compensation arrangement may include a fractional interpolator for applying a trigonometric interpolation to a sampled input signal according to a clock offset signal. It uses...
7450920 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Method and system for compensation of DC offset in an RF receiver  
Aspects of compensating for DC offset in an RF receiver may comprise sampling data from at least one of a plurality of output paths, selecting a sampled data and generating at least one feedback...
7444132 Apparatus, and associated method, for facilitating dynamic filtering of a receive signal  
Apparatus, and an associated method, for adaptively controlling filter characteristics of a filter forming part of a receive station, such as a mobile station operable in a cellular communication...
7437139 Method and apparatus for calibrating filtering of a transceiver  
A method and apparatus of calibrating filtering of receive and transmit signals is disclosed. The method of calibrating filtering of a received signal includes injecting an LO signal. The injected...
7433668 Controlling Q-factor of filters  
The present invention provides a method and an apparatus for controlling a Q-factor for a filter. The method comprises stabilizing an active feedback to provide a variable feedback in a filter,...
7433663 Automatic gain control system for multiple receiving antennae  
A multiple receiving antennae system having a plurality of radio frequency (RF) modules being responsive to incoming signals for processing the same to generate baseband signals. The multiple...
7430406 Gain control in a wireless device  
This disclosure is directed to techniques that can be executed by a wireless device to perform various signal processing tasks associated with wireless communication. The techniques involve gain...
7421252 Center frequency control of an integrated phase rotator band-pass filter using VCO coarse trim bits  
A phase rotator for a Cartesian feedback power amplifier in a transmitter final stage contains an integrated voltage controlled tunable resonant circuit accomplishing band-pass filtering at a...
7415259 Automatic gain control for satellite digital audio radio service receiver, method of automatically controlling gain and SDARS receiver incorporating the same  
An automatic gain control (AGC) for a Satellite Digital Audio Radio Service (SDARS) receiver, a method of automatically controlling gain and a SDARS receiver incorporating the AGC or the method. In...
7409197 Transceiver with receive path overload protection and method  
A transceiver includes a detuning circuit to generate an impedance mismatch in a receive signal path in response to a control signal provided by loop-control circuitry. The loop-control circuitry...
7398065 Programmable sampling band pass filter  
A variable bandwidth, sampled analog filter can be programmed to have a variety of responses. A variable bandwidth, sampled analog filter is preferably a sampled analog resonator based filter that...
7376407 System and method for dynamic impedance tuning to minimize return loss  
A system for tuning an impedance at a node comprises a first component associated with a first impedance when the first component is operating and a second impedance when the first component is not...
7376400 System and method for digital radio receiver  
A communications system comprising a processor, a variable oscillator, a radio frequency (RF) quadrature demodulator, a variable capacitor, a continuous-time, sigma-delta analog-to-digital...
7359691 High frequency interference-cut filter circuit  
Disclosed is a high frequency apparatus which eliminates an influence of interfering signals. An interference-cut filter ( 24 ) for eliminating interfering signals is disposed between an input...
7333791 Use of an image reject mixer in a forward data channel tuner  
Disclosed are systems and methods which utilize an image reject mixer in an out-of-band mixer application such as in a forward data channel frequency converter. For example, according to a...
7333790 Method and apparatus for generating arbitrary phase shift using a phase shifter based on adding two perpendicular vectors with variable gains  
A radio frequency (RF) phase shifter having an RC-CR circuit that includes a first capacitor having a first capacitor node and a second capacitor node and a first resistor coupled between the first...
7333467 Receiver circuit and method using selectively variable amplification for receiving time signals from different transmitters  
A time signal carrying encoded time information transmitted at a transmission frequency from any one of plural time signal transmitters is received, amplified, and evaluated to acquire the time...
7310507 Filter circuit permitting adjustment of cutoff frequency  
A filter circuit, having a plurality of selectable impedance elements, that has a cutoff frequency dependent on a selected impedance element, comprises a pulse generation circuit that supplies a...
7289784 Active tunable filter circuit  
An active tunable filter circuit for use as an integratable active filter in a mobile radio apparatus, comprises an active amplifier circuit (A) including a reactive feedback network including a...
7286811 Local oscillator apparatus and method  
A direct conversion satellite tuner is fully integrated on a common substrate. The integrated tuner receives an RF signal having a plurality of channels and down-converts a selected channel...
7283840 Reconfigurable analog baseband for a single-chip dual-mode transceiver  
A dual-mode analog baseband circuit is implementable on a single IC with reduced chip area. The baseband portion of the IC includes a single dual-mode complex filter that is reconfigurable to be a...
7251466 Television receiver including an integrated band selection filter  
A tuner circuit includes a band selection filter coupled to receive an input RF signal and provide a band selected output signal where the band selection filter includes a bank of band pass...
7221958 Received signal filtering for enhanced selectivity  
A delay-and-add filtering technique positions one or more filter nulls substantially at points of narrowband interference in a relatively wideband received signal. For example, the technique is...
7215939 Apparatus and method for detecting ripples caused by multipath propagation and controlling receiving antenna and tuner  
Improved signal reception is provided in a digital television signal received by identifying and mitigating multipath signal effects prior to demodulation and equalization. According to an...
7194247 Dual-channel passband filtering system using acoustic resonators in lattice topology  
A dual-channel passband filtering system having a first, second and third balanced ports for connecting, respectively, to a first transceiver, an antenna and a second transceiver. A first...
7184733 High frequency receiving device, integrated circuit used for the same, and TV receiver using them  
An oscillation frequency changing means is inserted between a tuner and an oscillator of local oscillator ( 56 ) of a high frequency receiving device, and the oscillation frequency changing means,...
7184730 Automatic gain control system having a wide range of continuous gain control  
An automatic gain control system ( 100 ) and methods thereof for a receiver for providing a wide range of continuous gain control has been discussed. The AGC includes an input stage ( 120 ) for...
7177622 Digital tuner  
A digital tuner of the invention has: a filter section that selects a desired reception signal from inputted reception signals; a converter section that performs frequency conversion on the desired...
7171185 Direct conversion receiver and DC offset reducing method  
A determining section ( 18 ) and gain variation amount detecting section ( 9 ) detect a period having a possibility of a DC-component offset in an internal circuit of a direct conversion receiver...
7161416 Programmable filter  
A filter wherein the poles and zeroes are programmable in a high speed control loop to form a particular desired filter profile. The control loop retrains the filter's poles and zeroes during the...
7158774 Method for tuning a filter  
The invention relates to a method for tuning a filter ( 5 ). The filter has at least one variable time constant, by which the location of the pass band (pc) of said at least one filter can be...
7157945 Window comparator and method of providing a window comparator function  
A window comparator comprising a single comparator circuit that has a positive input, a differential negative input, and an output, wherein limits of a window are defined by a reference voltage and...
7149488 Direct tuning of radio receiver integrated circuit  
A method for direct tuning of a radio receiver begins by providing a plurality of frequency-dependent control input signals to an input of the radio receiver. The method continues by, for each of a...
7139547 Integrated direct conversion satellite tuner  
A direct conversion satellite tuner is fully integrated on a common substrate. The integrated tuner receives an RF signal having a plurality of channels and down-converts a selected channel...
7120416 Semiconductor device and receiver  
A semiconductor device for demodulating a received signal in a satisfactory manner when the frequency of the received signal deviates. The semiconductor device is used in a receiver having a...
7116958 Interference rejection in a radio receiver  
The use of wideband or software defined radio is attractive in terms of cost reduction since it allows re-use of base stations for different transmission modes. However, wideband radio also...
7106149 Switchable tuneable bandpass filter with optimized frequency response  
In a receiver, provision is made of a tuneable switchable bandpass filter comprising a primary resonant circuit and a first secondary resonant circuit. A second secondary resonant circuit can be...
7076232 Method and apparatus for DC offset cancellation  
A radio transceiver includes amplification circuitry that is coupled to receive a down converted signal and to provide infinite rejection of any DC component added by the down conversion circuitry....
Matches 1 - 50 out of 237 1 2 3 4 5 >