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Browse by Category: Main > Communications
Class Information
Number: 455/324
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency modifying or conversion > Particular frequency conversion structure or circuitry > Homodyne (i.e., zero beat or synchrodyne reception)
Description: Subject matter comprising frequency conversion or modifying means and combined with means whereby a local signal wave of the same frequency as the incoming modulated wave is injected therein (i.e., zero beat).










Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8706071 Reconfigurable wideband receiver Apr. 22, 2014
8670740 Direct digital conversion tuner Mar. 11, 2014
8638883 DC offset cancellation in direct conversion receivers Jan. 28, 2014
8634450 Adaptive error correcting code for data communications over a plastic optical fibre Jan. 21, 2014
8620254 Wireless communication device and system Dec. 31, 2013
8620253 Apparatus and method for compensating for DC-offset in direct conversion receiver of wireless communications system Dec. 31, 2013
8619895 Apparatus and method for transmitting/receiving broadcast data in digital broadcasting system Dec. 31, 2013
8605822 Apparatus and method for transmitting and receiving data Dec. 10, 2013
8606215 Methods and systems for interference rejection for low signals Dec. 10, 2013
8571152 Power-saving apparatus used for wireless communication receiver and system, and method using the same Oct. 29, 2013
8525937 Apparatus and method for calibrating audio-visual signal Sep. 3, 2013
8509358 Viterbi equalization with detection of the nearest constellation points for stage reduction Aug. 13, 2013
8483644 Electronic component allowing the decoding of a radiofrequency transmission channel conveying coded digital information, in particular for satellite digital telebroadcasting Jul. 9, 2013
8478220 Discrete time polyphase mixer Jul. 2, 2013
8478222 I/Q calibration for walking-IF architectures Jul. 2, 2013
8463227 Receiver for amplitude-modulated signals Jun. 11, 2013
8463217 Multiple band multiple input multiple output transceiver integrated circuit Jun. 11, 2013
8463211 RF signal receiving apparatus Jun. 11, 2013
8442171 Digital correction of analog polyphase filters May. 14, 2013
8433276 Sampling circuit and receiver Apr. 30, 2013
8433277 Passive mixer and four-phase clocking method and apparatus Apr. 30, 2013
8428532 High-frequency receiver with multiple-channel digital processing Apr. 23, 2013
8422596 Communication device, communication method, and program Apr. 16, 2013
8369820 Frequency multiplier device Feb. 5, 2013
8364106 Multiple band direct conversion radio frequency transceiver integrated circuit Jan. 29, 2013
8259858 Carrier detect system, apparatus and method thereof Sep. 4, 2012
8224280 Radio frequency receiver, wireless communication unit and method of operation Jul. 17, 2012
8218687 Frequency dependent I/Q imbalance estimation Jul. 10, 2012
8194718 Receiving apparatus and signal processing method Jun. 5, 2012
8195115 Receiver architectures for digital radio broadcasts and associated methods Jun. 5, 2012
8180312 Receiver architecture for minimizing use of external bandpass filter between low-noise amplifier and first mixer May. 15, 2012
8170565 Method and apparatus of domain selection for routing control May. 1, 2012
8170504 Modified preamble for programmable transmitter May. 1, 2012
8170153 Method for deciding position of mapping symbols, and device and method for modulating binary signal May. 1, 2012
8165554 Quadrature correction method for analog television reception using direct-conversion tuners Apr. 24, 2012
8150360 DC offset calibration in a direct conversion receiver Apr. 3, 2012
8150359 Multiple frequency band hybrid receiver Apr. 3, 2012
8150355 Radio receiver Apr. 3, 2012
8149955 Single ended multiband feedback linearized RF amplifier and mixer with DC-offset and IM2 suppression feedback loop Apr. 3, 2012
8145178 Wireless terminal baseband processor high speed turbo decoding module Mar. 27, 2012
8140043 Simplified high frequency tuner and tuning method Mar. 20, 2012
8135084 Multiantenna receiving device Mar. 13, 2012
8107916 Multi-tuner variable low IF receiver for multi-channel applications Jan. 31, 2012
8102293 Digital direct conversion receiving apparatus and method Jan. 24, 2012
8090340 Down-converter and calibration method thereof Jan. 3, 2012
8027652 Radio front end Sep. 27, 2011
8019314 Radio communication apparatus Sep. 13, 2011
8010077 DC offset calibration in a direct conversion receiver Aug. 30, 2011
7974591 Modified preamble for programmable transmitter Jul. 5, 2011
7970373 Direct digital conversion tuner and method for using same Jun. 28, 2011

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