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Class Information
Number: 329/346
Name: Demodulators > Phase modulation demodulator > Input signal combined with local oscillator or carrier frequency signal
Description: Subject matter where the modulated signal input to the demodulator interacts therein with oscillations from a secondary source.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8643431 On-chip millimeter wave lange coupler Feb. 4, 2014
8551414 High-voltage plasma producing apparatus Oct. 8, 2013
8520780 Communication units, communication system and methods for modulation and demodulation Aug. 27, 2013
8477876 Fast blind channel search Jul. 2, 2013
8462894 Receiver circuit and receiver apparatus including the same Jun. 11, 2013
8174310 Quadrature modulation demodulation circuit May. 8, 2012
7911235 Logarithmic detectors Mar. 22, 2011
7881405 Combined mixer and polyphase decimator Feb. 1, 2011
7796710 Digital signal demodulator and wireless receiver using the same Sep. 14, 2010
7659513 Low terahertz source and detector Feb. 9, 2010
7567641 Sample rate conversion systems with an independent internal oscillator Jul. 28, 2009
7557647 Heterodyne receiver using resonant structures Jul. 7, 2009
7529314 Carrier phase detector May. 5, 2009
7430247 Carrier frequency detection for N-ary phase modulated signal Sep. 30, 2008
7342441 Heterodyne receiver array using resonant structures Mar. 11, 2008
7251295 Apparatus for recovering carrier Jul. 31, 2007
7109788 Apparatus and method of improving impedance matching between an RF signal and a multi- segmented electrode Sep. 19, 2006
7012245 Calculation of sensor array induced phase angle Mar. 14, 2006
6782058 Device and method for interpolated signal resampling between sampling clock cycles Aug. 24, 2004
6700940 Carrier reproduction circuit Mar. 2, 2004
6512799 Digital communication system and method for increased bit rates Jan. 28, 2003
6415004 Phase detector, timing recovery device using the same, and a demodulator using the timing recovery device Jul. 2, 2002
6411658 Demodulation device Jun. 25, 2002
6175269 Demodulation unit and method of demodulating a quadrature Jan. 16, 2001
6133802 Synchronous carrier recovery circuit and injection locked oscillator Oct. 17, 2000
6018551 Method and apparatus for reproducing carrier Jan. 25, 2000
5963351 Digital optical receiver with instantaneous Josephson clock recovery circuit Oct. 5, 1999
5949823 Data communication system and radio IC card system Sep. 7, 1999
5912929 Method and apparatus for performing carrier detection Jun. 15, 1999
5903350 Demodulator and method useful for multiplexed optical sensors May. 11, 1999
5841322 Phase detector using carrier suppression and oscillator using the phase detector Nov. 24, 1998
5832369 Microwave receiver configured to provide non-referenced distance measurements along with signal magnitude measurements Nov. 3, 1998
5793250 Phase demodulator selectively using a first or a second detector Aug. 11, 1998
5757857 High speed self-adjusting clock recovery circuit with frequency detection May. 26, 1998
5751187 Method and device for phase-modulated signals May. 12, 1998
5719527 Method and apparatus for amplifying, modulating and demodulating Feb. 17, 1998
5684836 Receiver with automatic frequency control Nov. 4, 1997
5656971 Phase demodulator having reliable carrier phase synchronization Aug. 12, 1997
5606581 Method and apparatus for the cancellation of interference in electrical systems Feb. 25, 1997
5541965 Carrier frequency synchronization device using two different B/W filters Jul. 30, 1996
5521548 Phase detector May. 28, 1996
5469112 Communication device with zero-crossing demodulator Nov. 21, 1995
5406218 Phase demodulator receiving inputs from phase detector and binary phase detector Apr. 11, 1995
5398002 Automatic frequency control system by quadrature-phase in frequency or phase demodulating system Mar. 14, 1995
5367538 Apparatus and method for direct phase digitizing Nov. 22, 1994
5296820 Coherent demodulator preceded by non-coherent demodulator and automatic frequency control circuit Mar. 22, 1994
5260975 Digital demodulator Nov. 9, 1993
5206601 Order statistic signal processor for estimating values of signal parameters and demodulating amplitude-, phase-, and frequency-modulated signals Apr. 27, 1993
5204634 Phase-locked loop demodulator having loop filter controlled by lock detector Apr. 20, 1993
5200977 Terminal unit apparatus for time division multiplexing access communications system Apr. 6, 1993

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