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Class Information
Number: 329/304
Name: Demodulators > Phase shift keying or quadrature amplitude demodulator
Description: Subject matter where the demodulator extracts the modulating signal from a signal which has undergone phase shift keying modulation or quadrature amplitude modulation.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6983029 |
Blind channel estimation and data detection for PSK OFDM-based receivers |
Jan. 3, 2006 |
| 6975165 |
Method and system for the conversion of phase shift keying signals (PSK) into amplitude shift keying signals (ASK) |
Dec. 13, 2005 |
| 6965654 |
Frequency offset quantity detecting apparatus |
Nov. 15, 2005 |
| 6922451 |
Frequency shifting circuit and method |
Jul. 26, 2005 |
| 6879638 |
Method and apparatus for providing communication between electronic devices |
Apr. 12, 2005 |
| 6868129 |
Demodulator for a radio receiver and method of operation |
Mar. 15, 2005 |
| 6861900 |
Fast timing acquisition for multiple radio terminals |
Mar. 1, 2005 |
| 6862440 |
Method and system for multiple channel wireless transmitter and receiver phase and amplitude calibration |
Mar. 1, 2005 |
| 6842495 |
Dual mode QAM/VSB receiver |
Jan. 11, 2005 |
| 6842488 |
VSB/QAM receiver and method |
Jan. 11, 2005 |
| 6825714 |
Multichannel interferometer with phase generated carrier demodulation and quadrature error correction |
Nov. 30, 2004 |
| 6826238 |
Quadrature amplitude modulation receiver and carrier recovery method |
Nov. 30, 2004 |
| 6812783 |
Discritized phase constellation continuous phase modulation demodulator |
Nov. 2, 2004 |
| 6785346 |
Complex phase-locked loop demodulator for low-IF and zero-IF radio receivers |
Aug. 31, 2004 |
| 6781446 |
Method and apparatus for the detection and classification of signals utilizing known repeated training sequences |
Aug. 24, 2004 |
| 6781447 |
Multi-pass phase tracking loop with rewind of current waveform in digital communication systems |
Aug. 24, 2004 |
| 6781448 |
Method and apparatus for demodulating data |
Aug. 24, 2004 |
| 6782058 |
Device and method for interpolated signal resampling between sampling clock cycles |
Aug. 24, 2004 |
| 6778613 |
Frequency and phase estimation for MPSK signals |
Aug. 17, 2004 |
| 6771721 |
Method and apparatus for eliminating audio clicks in a radio receiver |
Aug. 3, 2004 |
| 6765972 |
Carrier synchronization type demodulator for PSK signal |
Jul. 20, 2004 |
| 6760577 |
Alignment methods and apparatus for I/Q phase and amplitude error correction and image rejection improvement |
Jul. 6, 2004 |
| 6754260 |
Digital modulation signal measuring device and method capable of evaluating spectrum of noise component |
Jun. 22, 2004 |
| 6751450 |
Radio apparatus carrying out automatic gain control and gain control method |
Jun. 15, 2004 |
| 6728325 |
Method and apparatus for mixing down and spectrum folding frequency diverse modulated carrier |
Apr. 27, 2004 |
| 6724246 |
Demodulation structure and method |
Apr. 20, 2004 |
| 6721370 |
Phase correction circuit for radio communication apparatus |
Apr. 13, 2004 |
| 6720824 |
Demodulation method and apparatus |
Apr. 13, 2004 |
| 6717462 |
QPSK and 16 QAM self-generating synchronous direct downconversion demodulator |
Apr. 6, 2004 |
| 6707860 |
DC offset correction for direct-conversion receiver |
Mar. 16, 2004 |
| 6697440 |
Demodulator of receiver |
Feb. 24, 2004 |
| 6693980 |
Wideband fast-hopping receiver front-end and mixing method |
Feb. 17, 2004 |
| 6683493 |
Timing reproducing device and demodulator |
Jan. 27, 2004 |
| 6683921 |
Received-signal absolute phasing apparatus of receiver |
Jan. 27, 2004 |
| 6668032 |
Device and method for signal sampling at multiple clock rates |
Dec. 23, 2003 |
| 6661282 |
Demodulation apparatus and method in a communication system employing 16-ary QAM |
Dec. 9, 2003 |
| 6650178 |
N-port direct receiver |
Nov. 18, 2003 |
| 6639952 |
Demodulator synchronization loop lock-in detection circuit |
Oct. 28, 2003 |
| 6636570 |
Phase detection apparatus for compensating phase rotation error |
Oct. 21, 2003 |
| 6631171 |
QPSK modulation signal receiving unit |
Oct. 7, 2003 |
| 6624691 |
Demodulator for processing digital signal |
Sep. 23, 2003 |
| 6625239 |
Circuit for capturing frame sync signal in receiver |
Sep. 23, 2003 |
| 6621332 |
Demodulator and demodulation method of DQPSK system with reduced circuit scale |
Sep. 16, 2003 |
| 6617917 |
Caller-ID demodulation apparatus and method using multiple thresholds |
Sep. 9, 2003 |
| 6606357 |
Carrier injecting waveform-based modulation scheme for reducing satellite transponder power requirements and earth terminal antenna size |
Aug. 12, 2003 |
| 6603349 |
Doppler learning phase lock loop for burst demodulator |
Aug. 5, 2003 |
| 6603368 |
High data rate vector demodulator |
Aug. 5, 2003 |
| 6593805 |
Demodulation apparatus |
Jul. 15, 2003 |
| 6590945 |
Method and apparatus for frequency offset compensation |
Jul. 8, 2003 |
| 6570441 |
Incoherent demodulator and method of incoherently demodulating an IF signal |
May. 27, 2003 |
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