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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 |
| 6009126 |
Zero-IF receiver |
Dec. 28, 1999 |
| 6002298 |
Reconstituted frequency modulation with feedforward demodulator |
Dec. 14, 1999 |
| 6002721 |
Carrier frequency estimator for a signal receiver |
Dec. 14, 1999 |
| 5995563 |
System and method for fast channel switching in a satellite receiver |
Nov. 30, 1999 |
| 5987073 |
Symbol timing recovery network for a carrierless amplitude phase (CAP) signal |
Nov. 16, 1999 |
| 5974090 |
Special eye pattern and modulation and demodulation method using the same |
Oct. 26, 1999 |
| 5970101 |
Phase detecting method by analog-to-digital conversion |
Oct. 19, 1999 |
| 5969570 |
Reduced-tap filter in a demodulator |
Oct. 19, 1999 |
| 5960040 |
Communication signal processors and methods |
Sep. 28, 1999 |
| 5956374 |
Jitter suppressing circuit |
Sep. 21, 1999 |
| 5952879 |
Device for the simultaneous demodulation of a multifrequency signal, particularly for an eddy current measurement |
Sep. 14, 1999 |
| 5945875 |
.pi./n shift phase-shift keying demodulator |
Aug. 31, 1999 |
| 5946359 |
Parameter measuring apparatus for digital quadrature modulation signals |
Aug. 31, 1999 |
| 5946360 |
Frequency offset compensation using dotting sequences |
Aug. 31, 1999 |
| 5943370 |
Direct conversion receiver |
Aug. 24, 1999 |
| 5940446 |
Maximum likelihood detection of MPSK bursts with inserted reference symbols |
Aug. 17, 1999 |
| 5936578 |
Multipoint-to-point wireless system using directional antennas |
Aug. 10, 1999 |
| 5933460 |
Phase detecting method and phase tracking loop circuit for a digital vestigial sideband modulation communication device |
Aug. 3, 1999 |
| 5933053 |
Burst demodulator |
Aug. 3, 1999 |
| 5930305 |
Signal demodulation and diversity combining in a communications system using orthogonal modulation |
Jul. 27, 1999 |
| 5926507 |
Quotient coding modem |
Jul. 20, 1999 |
| 5926065 |
Digital modulator having a digital filter including low-speed circuit components |
Jul. 20, 1999 |
| 5923223 |
Transmission system in which either an in-phase or quadrature component of a transmitted signal is delayed prior to modulation |
Jul. 13, 1999 |
| 5920228 |
Digital demodulation with compensation for phase and frequency of tentatively demodulated signal |
Jul. 6, 1999 |
| 5912930 |
Phase shift keying signal demodulation method and device |
Jun. 15, 1999 |
| 5907585 |
Digital signal detecting method and detector |
May. 25, 1999 |
| 5905761 |
Amplitude shift keyed receiver |
May. 18, 1999 |
| 5896060 |
DPSK demodulator which may be used in an interrogator of a remote intelligence communication system |
Apr. 20, 1999 |
| 5892797 |
System and method for recovering data encoded using manchester code and other bi-phase level codes |
Apr. 6, 1999 |
| 5881107 |
Transmission system for digital signals, and transmitter and receiver therefor |
Mar. 9, 1999 |
| 5878088 |
Digital variable symbol timing recovery system for QAM |
Mar. 2, 1999 |
| 5875212 |
Phase demodulation method and apparatus for a wireless LAN, by counting the IF period |
Feb. 23, 1999 |
| 5872480 |
Programmable down-sampler having plural decimators and modulator using same |
Feb. 16, 1999 |
| 5872815 |
Apparatus for generating timing signals for a digital television signal receiver |
Feb. 16, 1999 |
| 5872812 |
Carrier reproducing circuit including region deciding circuitry |
Feb. 16, 1999 |
| 5867542 |
Clock phase detecting circuit and clock regenerating circuit each arranged in receiving unit of multiplex radio equipment |
Feb. 2, 1999 |
| 5861773 |
Circuit for detecting the locked condition of PSK or QAM |
Jan. 19, 1999 |
| 5862187 |
MPSK demodulator |
Jan. 19, 1999 |
| 5854570 |
Feedback-free method for the demodulation of higher-level MQAM signals without knowledge of the transmitted symbols |
Dec. 29, 1998 |
| 5852638 |
Method and apparatus for demodulating a symbol using symbol fragmentation, correlation and fourier analysis |
Dec. 22, 1998 |
| 5844943 |
Method and converter for converting rectangular signals to phase signals |
Dec. 1, 1998 |
| 5844938 |
Carrier based data operated squelch |
Dec. 1, 1998 |
| 5841814 |
Sampling system for radio frequency receiver |
Nov. 24, 1998 |
| 5838737 |
Method and apparatus for estimating PSK modulated signals |
Nov. 17, 1998 |
| 5832045 |
Method and apparatus for recovering baud timing from correlation of intersymbol interference |
Nov. 3, 1998 |
| 5832369 |
Microwave receiver configured to provide non-referenced distance measurements along with signal magnitude measurements |
Nov. 3, 1998 |
| 5832041 |
64 QAM signal constellation which is robust in the presence of phase noise and has decoding complexity |
Nov. 3, 1998 |
| 5828707 |
Differential detecting apparatus for detecting phase difference of phase-modulated signal |
Oct. 27, 1998 |
| 5825242 |
Modulator/demodulator using baseband filtering |
Oct. 20, 1998 |
| 5825241 |
Differential demodulator |
Oct. 20, 1998 |
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