Matches 1 - 50 out of 89 1 2 >
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7599678 Processor for a passive ranger  
A receiver includes an RF bridge and a processor coupled to the RF bridge to receive an information signal from the RF bridge. The processor includes a clock source and a processor front end. The...
7546100 System for generating amplitude matched 45 degree phase separated local oscillator signals  
A system for generating amplitude matched 45 degree phase separated signals is disclosed. Embodiments of the system for generating amplitude matched 45 degree phase separated signals include a...
7539474 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...
7415001 Method and receiver for processing a multi-user signal  
The invention relates to the field of signal processing for telecommunications, and concerns a method and receiver for processing a multi-user signal. In the method of the invention, a multi-user...
7383018 Satellite television system ground station having wideband multi-channel LNB converter/transmitter architecture with coarse tuner in outdoor unit  
A satellite television ground system, particularly for a make or break satellite television signal system, includes an outdoor unit and an indoor unit that are in communication with each other via...
7340233 Integrated circuit and methods for third sub harmonic up conversion and down conversion of signals  
An integrated circuit may include a receiver and/or a transmitter that performs third order sub-harmonic conversion. The integrated circuit may include a Gilbert cell active mixer with three or...
7324797 Bragg-cell application to high probability of intercept receiver  
A unique ultra wide band receiver is provided that blends together RF and photonic technologies. The receiver has application as a steering mechanism ( 600 ) for a much higher resolution receiver....
7231197 Angle rate interferometer and passive ranger  
A receiver includes a processor and an RF bridge. The RF bridge is coupled to the processor to receive a reference signal from the processor. The RF bridge includes first and second frequency...
7139546 Up-conversion of a down-converted baseband signal in a direct conversion architecture without the baseband signal passing through active elements  
A direct conversion circuit that not only down-converts the received modulated signal using a down-converting mixer into a baseband signal, but also, after performing a passive low pass filtering...
7139545 Ultra-wideband fully synthesized high-resolution receiver and method  
An ultra-wideband receiver system includes an intelligent-preselector stage to up-convert received signals to signals within a first IF frequency-range with stepped first oscillation signals, a...
6973328 Millimeter wave band transmitter, millimeter wave band receiver and millimeter wave band communication apparatus carrying out radio communication in millimeter wave band region  
A millimeter wave band communication apparatus includes a millimeter wave band transmitter receiving a plurality of input modulation signal waves to transmit a millimeter wave band multiplex signal...
6963735 Method and arrangement for receiving a frequency modulated signal  
A method and arrangement for receiving a frequency modulated signal, includes mixing the frequency modulated signal into a low-frequency signal, detecting the falling and rising edges of said...
6922555 Phase interpolation receiver for angle modulated RF signals  
A phase interpolation receiver for receiving angle modulated radio frequency signals. The receiver comprises mixers for down-converting the received angle modulated signal to lower frequency...
6909470 Digital broadcast recorder  
A digital broadcast recorder capable of recording digital television (TV) signals includes a first frequency converter which converts a received digitally modulated TV signal into a first...
6879817 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...
6775530 Direct conversion of narrow-band RF signals  
A method and device for converting at least one narrow band RF signal, being suitable for transmission between at least one communications device suitable for receiving wide-band RF signals and at...
6741847 Multi-carrier receiver frequency conversion architecture  
A frequency down-converter ( 18 ) for a receiver ( 10 ) in a wireless telecommunications system. The down-converter ( 18 ) is capable of simultaneously processing a plurality of signal channels...
6735421 Receiver including low noise amplifier and frequency down-converter for a wireless telecommunication system  
A receiver ( 10 ) for a wireless telecommunications system that provides relatively wideband signal processing of received signals without increased signal distortion so that multiple received...
6708027 Method and apparatus for harmonic free generation in multiple mixing frequency conversion  
A method is provided for selecting the frequencies of local oscillators and intermediate frequency converters of a receiver that selects the frequency for a first intermediate frequency converter,...
6707858 Low IF receiver  
A low IF receiver frequency translates an input signal in quadrature related mixers, filters in respective low pass channel filters, and derotates to produce a wanted signal and its image. At...
6657678 Digital broadcasting receiver  
A digital broadcast recorder capable of recording a digital television (TV) signals, includes a first frequency converter which converts a received digitally modulated TV signal into a first...
6625468 Digital portable telephone unit and method for playing back voice/sound in the same unit  
A digital portable telephone unit of the invention is equipped with: an antenna through which signal is transmitted and received; a radio section which conducts the frequency conversion of signal...
6564045 Broadband frequency multiplier  
An LO generation circuit generates an LO signal by doubling and quadrupling the frequency of a VCO signal. The frequency doubling and quadrupling provides high VCO-RF isolation as well as...
6411199 Radio frequency identification system  
A radio frequency identification system includes a transponder and a transponder reader. The transponder, responsive to an interrogation signal continuously transmitted by the transponder reader,...
6397051 Dual image-reject mixer receiver for multiple channel reception and processing  
A system and method in which a dual image-reject mixer arrangement receives an RF signal having at least one channel. The dual image-reject mixer arrangement generates first and second signals...
6215988 Dual band architectures for mobile stations  
A dual band user terminal (10) includes a controller (18) for outputting a BAND signal for specifying operation in one of a first frequency band or a second, higher frequency band; a single...
6137406 Double superheterodyne type microwave detector capable of detecting leaked microwaves  
A double superheterodyne type microwave detector is constructed from a reception antenna; a first local oscillator; a second local oscillator; reception means for detecting microwaves having...
6118499 Digital television signal receiver  
A first mixer outputs a TV signal of a first intermediate frequency (the first IF) by up-converting an input signal. A second mixer outputs a TV signal of the second intermediate frequency (the...
6112069 Radio receiver and method for suppressing attenuation properties of a low frequency signal  
A radio receiver, and a method therefore, for efficiently suppressing attenuation properties of a low frequency signal, in an analog frequency modulation type radio communication system. The radio...
6112065 Low to higher if conversion for active filtered limited IF systems  
An improved receiver architecture utilizing active filters for frequency conversion, wherein the final IF stage operates at a frequency higher than the previous IF stage, is disclosed to facilitate...
6088569 Method and apparatus for receiving a plurality of signals having different frequency bandwidths  
A first mixer (306) shifts a first end (208) of a desired signal frequency bandwidth (206) of a desired signal (202) to an edge (508) of a first filter frequency bandwidth (502) of a first filter...
6031583 High frequency video isolation system  
A high frequency video isolation circuit comprising: a modulating signal source for producing a modulating signal having a frequency of several hundred megahertz; an input multiplier for...
5878087 Signal communication device operable in a CDMA mode and an FM mode  
In a dual CDMA mode and FM mode receiver, a local oscillator selectively outputs a local oscillation signal for a CDMA mode or a local oscillation signal for an FM mode in response to a command. A...
5857004 Digital data receiver  
A digital data receiver comprising a first frequency converter for converting a high frequency digital orthogonal modulation signal into a first intermediate frequency signal based on a first local...
5841814 Sampling system for radio frequency receiver  
A radio frequency (rf) receiver adapted to receive a number of different digitally modulated rf input signals such as quadrature amplitude modulated (QAM) and vestigial side band (VSB) rf input...
5724653 Radio receiver with DC offset correction circuit  
The present invention relates to a radio receiver adapted for use in a time division multiple access (TDMA) system. The radio receiver includes DC compensator circuits configured to decrease the...
5572164 FM demodulator with threshold extension and receiver comprising such an FM demodulator  
An FM demodulator having two input terminals (11, 12), to which FM input signals having 90° phase relation are applied, the said FM demodulator including a phase comparator (1) and a tunable,...
5572264 High definition TV signal receiver  
To make it possible to receive a modulated signal which is obtained by suppressing a carrier signal such as a high definition TV signal which is digitally demodulated such as QAM (quadrature...
5564098 Ultra low-power integrated circuit for pseudo-baseband down-conversion of GPS RF signals  
A GPS receiver downconverter combines on a single integrated circuit, a first super-heterodyne mixer, a voltage controlled oscillator, a phase locked loop, a pair of quadrature mixers and a pair of...
5548831 FM Receiver having multiple IF stages  
An FM receiver includes an RF section, a first mixer stage for converting a desired RF reception signal into a first IF signal having a carrier frequency located on average at a first intermediate...
5537676 Method of receiving data signals in a radio transceiver using low cost components  
A method of receiving a data signal in a radio transceiver by passing an input receive signal through an input bandpass filter having a bandwidth sufficient to reject signals with frequencies equal...
5434893 Component for a differential transmitter-receiver of signals with direct sequence spread spectrum and the corresponding transmitter-receiver  
The component essentially comprises two correlators (TR1, F1), (TR2, F2) shifted by one period or cycle from the information element. This component fulfils both the correlation and delay...
5361406 Audio level equalization of broadcast and national weather service FM radio signals  
A television receiver includes a single tuner for tuning both television channels and broadcast FM stations. The tuner serves as the first conversion stage of a double conversion FM receiver,...
5222106 Interference detection and reduction  
Interference detection and reduction is disclosed in which an interference carrier is reduced by processing a signal of an input frequency to a demodulator such as a PSK signal appended with bit...
5204983 Dual conversion reflex receiver  
Both the low and high intermediate frequencies (IF) are amplified simultaneously in a single IF amplifier strip. For proper operation it is required that the two IFs be sufficiently isolated from...
5204972 Arrangement for compensating for temperature dependent performance characteristics of surface acoustic wave filter  
A first control circuit is provided with a temperature detector and a memory in which temperature related control data is stored. The control circuit outputs a control signal, which varies with...
5148452 Global positioning system digital receiver  
A digital GPS (Global Positioning System) receiver for receiving a plurality of coded satellite signals. The plurality of satellite signals are transmitted by a corresponding plurality of...
5060297 TVRO receiver system with tracking filter for rejection of image frequencies  
A TVRO receiver for the reception of frequency modulated satellite broadcast signals is provided with the capability of efficiently rejecting image frequencies generated as the received signals...
4998261 Spread spectrum signal demodulator  
In a digital data receiver (80) for demodulating a direct sequence spread spectrum differential phase shift keyed data signal, the signal is applied to the input transducer (140) of a SAW device...
4944025 Direct conversion FM receiver with offset  
A direct conversion FM receiver that includes AC coupling and automatic gain control employs an offset frequency at the first local oscillator. The offset frequency prevents the frequency spectrum...
Matches 1 - 50 out of 89 1 2 >