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Class Information
Number: 455/205
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Frequency or phase modulation
Description: Subject matter comprising a receiver system designed to convert a frequency-modulated or phase-modulated carrier wave input into perceptible output signals representative of the useful information contained in the modulation signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616938 |
Mixer offset cancellation without generating I/Q imbalance |
Nov. 10, 2009 |
| 7580694 |
Contactless integrated circuit with high-efficiency electrical power supply circuit |
Aug. 25, 2009 |
| 7555034 |
Apparatus and method for detecting timing error based on cyclic correlation |
Jun. 30, 2009 |
| 7546100 |
System for generating amplitude matched 45 degree phase separated local oscillator signals |
Jun. 9, 2009 |
| 7542748 |
Signal processing circuit comprising an attenuating unit, a detecting unit, and an attenuation rate setting unit |
Jun. 2, 2009 |
| 7542782 |
Method and apparatus for wireless transmission of audio signals of computer |
Jun. 2, 2009 |
| 7526262 |
Converter circuit for a limiter receiver structure and method for converting a signal in a limiter receiver structure |
Apr. 28, 2009 |
| 7418248 |
Signal reception device, signal transmission device, radio communication system, and signal reception method |
Aug. 26, 2008 |
| 7395042 |
Enhancing signals in a two-way radio system |
Jul. 1, 2008 |
| 7386291 |
Integrated millimeter-wave quadrature generator |
Jun. 10, 2008 |
| 7386052 |
Automation device using FSK modulation |
Jun. 10, 2008 |
| 7366488 |
Digital carrier-recovery scheme for FM stereo detection |
Apr. 29, 2008 |
| 7359680 |
Delay calibration in polar modulation transmitters |
Apr. 15, 2008 |
| 7327992 |
Tracking generator with internal vector modulation source |
Feb. 5, 2008 |
| 7319884 |
FM radio device and transmission power control method |
Jan. 15, 2008 |
| 7289005 |
Polar modulator and a method for modulation of a signal |
Oct. 30, 2007 |
| 7272375 |
Integrated low-IF terrestrial audio broadcast receiver and associated method |
Sep. 18, 2007 |
| 7215931 |
Method and apparatus for up-and-down-conversion of radio frequency (RF) signals |
May. 8, 2007 |
| 7203253 |
Method and apparatus of cross-correlation |
Apr. 10, 2007 |
| 7181165 |
Local wireless audio signal RF transmitter and receiver having a single downconverter without need for IF carrier |
Feb. 20, 2007 |
| 7177609 |
Chopper-direct-conversion (CDC) radio architecture |
Feb. 13, 2007 |
| 7167686 |
Wireless communications transceiver: transmitter using a harmonic rejection mixer and an RF output offset phase-locked loop in a two-step up-conversion architecture and receiver using direct c |
Jan. 23, 2007 |
| 7155184 |
Triple band receiving apparatus for a mobile communication terminal |
Dec. 26, 2006 |
| 7149491 |
Radio reception apparatus symbol timing control method, and symbol timing control program |
Dec. 12, 2006 |
| 7130595 |
Transmitter power amplifier ramping method |
Oct. 31, 2006 |
| 7123070 |
High frequency gain amplifier with phase compensation circuit |
Oct. 17, 2006 |
| 7123892 |
Architecture for an AM/FM digital intermediate frequency radio |
Oct. 17, 2006 |
| 7095993 |
Frequency auto-correction apparatus for CDMA multipath fading channel |
Aug. 22, 2006 |
| 7095996 |
Wireless communication system, and demodulation method and data rate control method therefor |
Aug. 22, 2006 |
| 7046975 |
Method and system for blind detection of modulation type |
May. 16, 2006 |
| 7043202 |
Frequency modulator apparatus of phase selection type, and frequency synthesizer of phase selection type |
May. 9, 2006 |
| 7027505 |
System and method for bandwidth compression of frequency and phase modulated signals and suppression of the upper and lower sidebands from the transmission medium |
Apr. 11, 2006 |
| 7024169 |
AMPS receiver using a zero-IF architecture |
Apr. 4, 2006 |
| 6999528 |
I/Q demodulator device with three power detectors and two A/D converters |
Feb. 14, 2006 |
| 6977545 |
FM signal receiver and wireless communications device using same |
Dec. 20, 2005 |
| 6959201 |
Method of switching from a first mobile radio mode to a second mobile radio mode and an associated multimode mobile terminal |
Oct. 25, 2005 |
| 6917787 |
System and method for superheterodyne frequency multiplication signal expansion to achieve a reduced bandwidth frequency or phase modulation communication channel |
Jul. 12, 2005 |
| 6903603 |
Phase detection circuit and receiver |
Jun. 7, 2005 |
| 6898721 |
Clock generation systems and methods |
May. 24, 2005 |
| 6879815 |
Apparatus for extracting a carrier frequency |
Apr. 12, 2005 |
| 6788922 |
Radio FM receiver having a frequency 2-divider and a frequency 3-divider for alternatively dividing a VCO signal for down-converting a received radio signal |
Sep. 7, 2004 |
| 6760571 |
Automatic frequency deviation detection and correction apparatus |
Jul. 6, 2004 |
| 6731917 |
Method and apparatus for minimizing image power in the output of a receiver circuit |
May. 4, 2004 |
| 6725023 |
Radio FM receiver |
Apr. 20, 2004 |
| 6724246 |
Demodulation structure and method |
Apr. 20, 2004 |
| 6714604 |
Receiver |
Mar. 30, 2004 |
| 6708026 |
Division based local oscillator for frequency synthesis |
Mar. 16, 2004 |
| 6704554 |
Frequency modulation receiver in particular for an RDS application |
Mar. 9, 2004 |
| 6671378 |
Detection of noise in a frequency demodulated FM audio broadcast signal |
Dec. 30, 2003 |
| 6647245 |
Subsidiary communication authorization (SCA) radio turner |
Nov. 11, 2003 |
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