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Class Information
Number: 342/100
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Return signal controls radar system > Receiver > Frequency > Doppler frequency tracking > Wtih local osillator control
Description: Subject matter wherein the returned signal is used to regulate the frequency of the receiver local oscillator.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8711032 High-resolution, active reflector radio frequency ranging system Apr. 29, 2014
8712360 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Apr. 29, 2014
8588270 Architecture for ultra-wideband radio Nov. 19, 2013
8552906 Method and circuit for operating a mixer Oct. 8, 2013
8552902 Methods and apparatus for suppression of low-frequency noise and drift in wireless sensors or receivers Oct. 8, 2013
8532600 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Sep. 10, 2013
8358235 Wireless sensor device Jan. 22, 2013
8301098 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Oct. 30, 2012
8284099 FMCW signal generation circuit and radar apparatus Oct. 9, 2012
8274426 High-resolution, active reflector radio frequency ranging system Sep. 25, 2012
8188911 Low noise generator for frequency swept signals May. 29, 2012
8077818 Radio receiver Dec. 13, 2011
8044844 Pulsed radar level gauge system and method for energy efficient filling level determination Oct. 25, 2011
7880665 System and method for adaptation of a radar receiver in response to frequency drift in a transmission source Feb. 1, 2011
7782245 Radar system Aug. 24, 2010
7746270 Radar apparatus and radar tuning method Jun. 29, 2010
7737885 Ramp linearization for FMCW radar using digital down-conversion of a sampled VCO signal Jun. 15, 2010
7737880 Microwave and millimeterwave radar sensors Jun. 15, 2010
7679549 Waveform generation method, radar device, and oscillator for radar device Mar. 16, 2010
7583224 Radar apparatus with automatic local oscillator tuning function Sep. 1, 2009
7570201 Radar exciter including phase compensation of the waveform generator Aug. 4, 2009
7567202 Radar system Jul. 28, 2009
7548195 Waveform generation method, radar device, and oscillator for radar device Jun. 16, 2009
7474259 Traffic sensor and method for providing a stabilized signal Jan. 6, 2009
7405869 Method and system of local oscillator signal generation Jul. 29, 2008
7388537 Radar detector with reduced emissions Jun. 17, 2008
7362261 Linear frequency-modulated pulse radar Apr. 22, 2008
7095366 High-frequency oscillation apparatus, radio apparatus, and radar Aug. 22, 2006
7061423 Interleaved sweep for detection of pop transmissions in police radar detectors Jun. 13, 2006
7019684 Phase lock loop circuitry Mar. 28, 2006
6972711 Transmit-receive FM-CW radar apparatus Dec. 6, 2005
6972710 Automotive radio wave radar and signal processing Dec. 6, 2005
6693578 Mixer optimization for active radar warning receiver Feb. 17, 2004
6691031 Method and apparatus for substituting sensor data for satellite signal in GPS receiver Feb. 10, 2004
6630902 Shipboard point defense system and elements therefor Oct. 7, 2003
6563450 Shipboard point defense system and elements therefor May. 13, 2003
6536893 Waterfast and smearfast inks using ink jet delivered dye sublimation dyes Mar. 25, 2003
6532271 Carrier recovery and doppler frequency estimation Mar. 11, 2003
6457825 Ink jet printing method Oct. 1, 2002
6441774 Heliographic ink jet apparatus and imaging processes thereof Aug. 27, 2002
6344819 Heliographic ink jet apparatus and imaging processes thereof Feb. 5, 2002
6188349 Frequency adjusting arrangement Feb. 13, 2001
6147591 Process for transmitting data between a read/write device and a transponder Nov. 14, 2000
6137406 Double superheterodyne type microwave detector capable of detecting leaked microwaves Oct. 24, 2000
6091356 Chirp source with rolling frequency lock for generating linear frequency chirps Jul. 18, 2000
6072427 Precision radar timebase using harmonically related offset oscillators Jun. 6, 2000
6044333 Process and device to transmit data between a read/write device and a transponder Mar. 28, 2000
5940025 Noise cancellation method and apparatus Aug. 17, 1999
5835052 Radar detector and the adjustment system and method thereof Nov. 10, 1998
5790068 AFC control switching circuit Aug. 4, 1998

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