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Class Information
Number: 332/103
Name: Modulators > Phase shift keying modulator or quadrature amplitude modulator
Description: Subject matter in which the phase of the carrier is shifted among a plurality of discrete angles in accordance with the modulating signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7623570 |
Multi sub-carrier communication system and method providing improved frequency equalization performance |
Nov. 24, 2009 |
| 7623000 |
Hybrid linear and polar modulation apparatus |
Nov. 24, 2009 |
| 7612627 |
Integrated binary phase shift keying with silicon MEMS resonators |
Nov. 3, 2009 |
| 7605724 |
Method and apparatus for a transmission signal up-converting filter |
Oct. 20, 2009 |
| 7595702 |
Modulation apparatus capable of correcting non-linearity of voltage controlled oscillator |
Sep. 29, 2009 |
| 7586293 |
Digital modulation circuit |
Sep. 8, 2009 |
| 7583702 |
Method of transmitting paging indicator and notification indicator and corresponding modulation and demodulation devices |
Sep. 1, 2009 |
| 7579921 |
On-off keying-7-phase shift keying modulation system and method for fiber communication |
Aug. 25, 2009 |
| 7570705 |
GMSK modulation using a dual-port memory |
Aug. 4, 2009 |
| 7555051 |
Method and device for estimating IQ imbalance |
Jun. 30, 2009 |
| 7539266 |
Phase shift keying wireless communication apparatus and method |
May. 26, 2009 |
| 7535310 |
Distortion compensation circuit |
May. 19, 2009 |
| 7518459 |
Harmonic-rejection modulation device |
Apr. 14, 2009 |
| 7518460 |
Amplitude modulation apparatus, amplitude limiting method, and computer-readable program |
Apr. 14, 2009 |
| 7515073 |
Digital sample rate conversion |
Apr. 7, 2009 |
| 7515651 |
Parallel processing for programmable wideband digital modulation |
Apr. 7, 2009 |
| 7512387 |
Method and control system for controlling the output power of an RF amplifier system |
Mar. 31, 2009 |
| 7505531 |
Signal communications system and method for noisy links |
Mar. 17, 2009 |
| 7492832 |
Method and apparatus for digital vector QAM modulator |
Feb. 17, 2009 |
| 7463108 |
Active 90-degree phase shifter with LC-type emitter degeneration and quadrature modulator IC using the same |
Dec. 9, 2008 |
| 7460612 |
Method and apparatus for a fully digital quadrature modulator |
Dec. 2, 2008 |
| 7426246 |
Dual layer signal processing in a layered modulation digital signal system |
Sep. 16, 2008 |
| 7423987 |
Feeder link configurations to support layered modulation for digital signals |
Sep. 9, 2008 |
| 7417514 |
Method for modulating phase or frequency in a communication system using clock division |
Aug. 26, 2008 |
| 7412008 |
Programmable phase mapping and phase rotation modulator and method |
Aug. 12, 2008 |
| 7379509 |
Digital intermediate frequency QAM modulator using parallel processing |
May. 27, 2008 |
| 7358828 |
Orthogonal modulation device, method, program, recording medium, and modulation device |
Apr. 15, 2008 |
| 7346123 |
Quadrature modulator |
Mar. 18, 2008 |
| 7340011 |
Method of frequency multiplication in a radiocommunications apparatus |
Mar. 4, 2008 |
| 7327202 |
Optimization for an IQ modulator |
Feb. 5, 2008 |
| RE39983 |
Carrier injecting waveform-based modulation scheme for reducing satellite transponder power requirements and earth terminal antenna size |
Jan. 1, 2008 |
| 7308049 |
Method and apparatus for noncoherent signal processing in pilotless wireless systems |
Dec. 11, 2007 |
| 7286613 |
Process and device for modulating a carrier with amplitude and phase error compensation |
Oct. 23, 2007 |
| 7280613 |
Method to inject hierarchical data onto single carrier stream |
Oct. 9, 2007 |
| 7274753 |
Method of implementing modulation and modulator |
Sep. 25, 2007 |
| 7269229 |
Reduced memory architecture for edge modulator |
Sep. 11, 2007 |
| 7269232 |
Device for producing a phase and amplitude modulated radio frequency signal |
Sep. 11, 2007 |
| 7248639 |
Method for reducing the out-of-band emission in AM transmitters for digital transmission |
Jul. 24, 2007 |
| 7248647 |
Radio telecommunications system operative by interactive determination of soft estimates, and a corresponding method |
Jul. 24, 2007 |
| 7236543 |
Method and apparatus of 8PSK modulation |
Jun. 26, 2007 |
| 7224237 |
Modulator and correction method thereof |
May. 29, 2007 |
| 7221908 |
Radio communication apparatus |
May. 22, 2007 |
| 7205859 |
Method and apparatus for sub sample-per-symbol demodulator for a spectrally efficient waveform with an LPI feature |
Apr. 17, 2007 |
| 7197087 |
System and method for differential IQ delay compensation in a communications system utilizing adaptive AQM compensation |
Mar. 27, 2007 |
| 7187728 |
Coding method and use of a receiver with a convolutional decoder |
Mar. 6, 2007 |
| 7184491 |
Wireless communication apparatus |
Feb. 27, 2007 |
| 7173981 |
Dual layer signal processing in a layered modulation digital signal system |
Feb. 6, 2007 |
| 7164328 |
Direct digital amplitude modulator |
Jan. 16, 2007 |
| 7164327 |
Compensation of the IQ phase asymmetry in quadrature modulation and demodulation methods |
Jan. 16, 2007 |
| 7158577 |
Communication system |
Jan. 2, 2007 |
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