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Match Document Document Title
7415264 Low noise filter for a wireless receiver  
A low noise filter is arranged to receive an input signal from a downconverter. The low noise filter is constructed to block or cancel any DC offset in the input signal, as well as filter selected...
7415247 Method and arrangement for transmitting and receiving RF signals through various radio interfaces of communication systems  
A method and an arrangement for transmitting and receiving RF signals, associated with different radio interfaces of communication systems, employ a direct conversion based transceiver which...
7415065 Adaptive filtering in the presence of multipath  
Adaptively analyzing an observed signal to estimate that part of the signal that best corresponds to a steering vector. Modifying the steering vector by convolution of the steering vector with a...
7406304 Electronic component with integrated tuning device, allowing the decoding of digital terrestrial or cable television signals  
An integrated superheterodyne dual-conversion tuner upconverts a signal so as to place it outside a reception band, and then downconverts the signal with a non-zero intermediate frequency. A first...
7405636 Passive polyphase filter  
Four input nodes I 1 -I 4 for inputting 4-phase signals, four resistors R 1 -R 4 , four capacitors C 1 -C 4 , and four output nodes O 1 -O 4 for outputting 4-phase signals are provided. The...
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...
7395098 Bias filtering module including MOS capacitors  
A bias filtering module with at least two capacitive levels satisfies both a settle time requirement and a filtering requirement using a voltage dependent filter module whose capacitance is a...
7388936 Digital data receiver for edge cellular standard with DC offset correction, channel impulse response estimation, I/Q phase imbalance compensation, interference estimation, and selective equalization  
A receiver unit includes a prefilter that receives as one of the inputs a channel impulse response (CIR) estimation data set and removes unnecessary data information from the CIR estimation data...
7386280 Gain insensitive high-pass VGA  
An integrated circuit radio transceiver and method therefor includes a high-pass variable gain amplifier (HPVGA) operably disposed within one of the transmitter and the receiver front ends operable...
7376409 Bandpass filter with integrated variable gain function using improved resistor array  
The invention enables a gain adjustment in a receiver to improve signal quality by varying resistance of an input resistor array of a bandpass filter, the array having a plurality of resistors in...
7373129 Radio communication terminal  
A radio communication terminal disposed in close proximity to or built in electronic equipment is provided with a receiver connected to a receiving antenna and an interference canceller for...
7369836 Adjacent interference removal device  
An adjacent interference removal device capable of providing an improved reception quality. An IF signal Sin having passed through an IF filter having a pass frequency band width of 200 kHz is...
7359693 Enclosure and substrate structure for a tuner module  
A tuner module comprising a tuner and a tuner enclosure. The tuner includes a substrate containing filter coils and the tuner enclosure includes at least one partition plate placed between filter...
7352911 Method for bilateral filtering of digital images  
A method for processing an image using a bilateral filter. The bilateral filter is reformulated at each pixel location in the image into a sum of the original signal value of a central pixel at...
7349468 Methods and devices for shortening the convergence time of blind, adaptive equalizers  
The convergence time of a blind, adaptive equalizer is shortened by using a tracking generator. The tracking generator comprises a smoothing filter which receives and smoothes a tap coefficient...
7346327 Wireless receiving circuit and wireless portable device  
A wireless receiving circuit includes a mixer, a buffer, an active low-pass filter, and a second order passive low-pass filter which are connected between a signal input terminal and a signal...
7346326 Mobile communication terminal with equalizer function  
Disclosed is a mobile communication terminal which is provided with an equalizer function of audio equipment to adjust a timbre of transmitting/received speech sounds so as to satisfy a great...
7346322 Receiver including linearity compensation in the receive band  
The invention relates to a receiver 1 of signals and proposes to remedy a non-linearity problem in an amplifier 70 of an integrated tuner 7. A linearity compensation circuit 8 is inserted...
7340237 Dual-band active filter  
The present invention discloses a dual-band active filter having filtering response and positive pass-band gain. The dual-band active filter includes an input match unit for gain match of the...
7340218 Pulsed signal device characterization employing adaptive nulling and IF gating  
A receiver channel, test system and method employ adaptive nulling to filter a targeted frequency component from a pulsed signal to produce a filtered pulsed signal. The filtered pulsed signal...
7336939 Integrated tracking filters for direct conversion and low-IF single conversion broadband filters  
A radio frequency (RF) tuner includes a programmable tracking filter bank receiving an RF input and outputting a filtered RF signal. A mixer stage receives the filtered RF signal and outputs a...
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...
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...
7330523 Estimating frequency offset  
Frequency offset estimation apparatus for estimating the offset from a predetermined centre frequency of an input signal carrying a plurality of frequency shifted symbols, the apparatus comprising:...
7327997 High order trans-impedance filter with a single operational amplifier  
A trans-impedance filter circuit provided according to an aspect of the present invention contains an operational amplifier, a first resistor, a first capacitor, a second resistor, and a second...
7327813 Digital receiving device and radio communication system  
A digital receiving device includes a detecting means for detecting a specific code under a signal receiving state capable of successively receiving a desired signal, a setting means for setting a...
7321754 Radio-frequency signal frequency conversion device for a low power RF receiver  
The radio-frequency signal frequency conversion device generates intermediate complex signals (IF) for a correlation stage of a low power RF receiver. In order to do this, the device includes a...
7319850 Low noise block downconverter converting received signal to intermediate frequency signal  
In a low noise block downconverter converting a right-hand (or horizontally) polarized wave signal and a left-hand (or vertically) polarized wave signal to intermediate frequency signals, one of...
7310508 Inline filter resistors  
A shorted resistive block formed in line with at least one trace of a plurality of a top metal layer includes a plurality of resistors with a removable shorting link coupled across the resistive...
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...
7308241 Receiver system  
A conventional receiver system has a filter circuit with unsatisfactory gain characteristics, and thus does not offer satisfactory reception performance. A receiver system of the invention has a...
7301391 Filtering variable offset amplifier  
A current summing FIR filter can be implemented with multiple differential input stages and variable tail currents. The variable tail currents can be used to appropriately weight the present and...
7298803 Methods and apparatuses for filtering common mode interference  
In one embodiment, a method that includes detecting a level on each of a plurality of data channels; summing the levels of a subset of data channels to get a summed level, the subset of data...
7292834 Switchable high frequency bandpass filter  
A switchable high frequency bandpass filter includes an input node and an output node, a switchable LC resonator, and a switch signal input interface circuit. The switchable LC resonator is coupled...
7289558 Infinite impulse response multiplierless digital filter architecture  
A multiplierless IIR filter incorporates power-of-two coefficients to perform shift operations to reduce space and increase speed. To optimize performance, a genetic algorithm generates the...
7277514 Inter-symbol interference canceller  
The invention relates to a device for cancelling inter-symbol interference in a sampled digital signal. The device comprises a first filter, for which the optimum transfer function is identical to...
7266360 Low noise amplifier for wireless communications  
A low noise amplifier is provided for the receiver of a wireless communications system. The amplifier incorporates an image rejection function by incorporating a notch filter formed by an inductor...
7266351 Transconductance / C complex band-pass filter  
A complex filter such as the channel select filter in a radio transceiver is implemented using a transconductance/C topology to benefit from the ability to tune such filters and thereby stabilize...
7254177 Architecture for a digital subscriber line analog front end  
An analog front end for communicating discrete multitone modulated signals on a subscriber line includes a transmit block, a receive block, and a hybrid packaged within a same integrated circuit....
7248849 Frequency domain training of prefilters for receivers  
A prefilter is trained as follows. The frequency response B of a conditioned channel is determined without reference to the prefilter, and the frequency response W of the prefilter is computed from...
7242918 Current driven polyphase filters and method of operation  
A filter circuit includes a polyphase filter coupled to a first circuit component and a second circuit component. The first circuit component propagates four input current signals to the polyphase...
7242334 Wireless receiver circuit with merged ADC and filter  
A CMOS hybrid analog-digital receiver core where filtering and gain functions are implemented in the digital domain. The analog portion of the receiver core includes standard circuits such as a low...
7231189 Transmit and/or receive channel communication system with switchably coupled multiple filtering components  
A communication system includes a front-end multi-throw switch, a back-end multi-throw switch, multiple filters and a switch controller. The front-end multi-throw switch includes front-end throws...
7221924 Wideband monolithic tunable high-Q notch filter for image rejection in RF application  
A notch filter with a high Q factor, which is integrated with a first and a second cascoded LNA, is totally contained on an integrated chip. The notch filter, comprising two Q-enhancement circuits,...
7212801 Electrostatic protection circuit with impedance matching for radio frequency integrated circuits  
An electrostatic-discharge/impedance-matching circuit for use in radio frequency (RF) integrated circuits. The electrostatic-discharge/impedance-matching circuit includes at least one shunt circuit...
7209726 Switch in UHF bandpass  
By using ICs with combined inputs for the VHF-high bandpass circuit and the UHF bandpass circuit, undesirable resonances occur which are caused by one of the tuned circuits. The problem is solved...
7206564 System and method to perform adaptive channel filtering on a radio frequency burst in a cellular wireless network  
A method to perform adaptive channel filtering on a Radio Frequency (RF) bursts in a cellular wireless communication system. This method first filters an input signal with a first stage filter...
7206563 Reduction of radio frequency interference (RFI) produced by switching amplifiers  
Apparatus and methods for reducing radio frequency interference produced by switching amplifiers, includes a variable-order noise shaper in a system that includes an AM tuner. An alternative...
7206337 Bit stream conditioning circuit having output pre-emphasis  
A high-speed bit stream interface module interfaces a high-speed communication media to a communication Application Specific Integrated Circuit (ASIC) via a Printed Circuit Board (PCB). The...
7203474 Receiver system  
A conventional receiver system has a filter circuit with unsatisfactory gain characteristics, and thus does not offer satisfactory reception performance. A receiver system of the invention has a...
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