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Class Information
Number: 342/103
Name: Communications: directive radio wave systems and devices (e.g., radar, radio navigation) > Return signal controls radar system > Receiver > Frequency > Phase > Phase locked loop
Description: Subject matter including circuit means to compare the phases of an output signal and the return signal of a target, with any phase differences converted into a correction voltage that causes the phase of the output signal to change so that it tracks the return signal.

Patents under this class:
1 2 3

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
8654006 Integrated circuit comprising frequency generation circuitry for controlling a frequency source Feb. 18, 2014
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
8494085 Method and system for bandwidth calibration for a phase locked loop (PLL) Jul. 23, 2013
8433026 Multi-rate digital phase locked loop Apr. 30, 2013
8416121 Narrow-band wide-range frequency modulation continuous wave (FMCW) radar system Apr. 9, 2013
8363703 System and method for phase detection Jan. 29, 2013
8350750 Distributed time-reversal mirror array Jan. 8, 2013
8301098 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS Oct. 30, 2012
8275493 Bow riding unmanned water-borne vehicle Sep. 25, 2012
8274426 High-resolution, active reflector radio frequency ranging system Sep. 25, 2012
8233578 Phase-interpolator based PLL frequency synthesizer Jul. 31, 2012
8212715 Modular radar system Jul. 3, 2012
8213560 PLL circuit Jul. 3, 2012
8164511 Signal processing device, radar device, vehicle control device, and signal processing method Apr. 24, 2012
8131224 Delay, gain and phase estimation for measurement receivers Mar. 6, 2012
8098193 Digitally controlled UWB millimeter wave radar Jan. 17, 2012
8027409 Noise prediction-based signal detection and cross-talk mitigation Sep. 27, 2011
7990313 Radar arrangement Aug. 2, 2011
7983370 Clock and data recovery circuit Jul. 19, 2011
7953328 Optical DQPSK transmitter phase monitor and control May. 31, 2011
7940667 Delay measurements and calibration methods and apparatus for distributed wireless systems May. 10, 2011
7899137 Mobile communication system with integrated GPS receiver Mar. 1, 2011
7898344 Phase-locked oscillator and multi-radar system using same Mar. 1, 2011
7830986 Method and apparatus for a phase/frequency locked loop Nov. 9, 2010
7787575 Method and system for wide-range synchronization to alternating current power signals Aug. 31, 2010
7782245 Radar system Aug. 24, 2010
7746956 Method and system for bandwidth calibration for a phase locked loop (PLL) Jun. 29, 2010
7742553 VCO initial frequency calibration circuit and method therefore Jun. 22, 2010
7738616 Phase tracking system Jun. 15, 2010
7737880 Microwave and millimeterwave radar sensors Jun. 15, 2010
7724181 Target object detection apparatus for acquiring information concerning target objects based on correlation matrix derived from signal values corresponding to reflected electromagnetic waves May. 25, 2010
7639724 RF converter with multiple mode frequency synthesizer compatible with a 48 Fo GPS baseband processor Dec. 29, 2009
7567202 Radar system Jul. 28, 2009
7548188 Precision radio frequency delay device Jun. 16, 2009
7519113 Noise detection device Apr. 14, 2009
7421053 Fast clock acquisition enable method using phase stir injection to PLL for burst mode optical receivers Sep. 2, 2008
7391359 Mode S transponder transmission signal decoder and Mode S transponder transmission signal decoding method Jun. 24, 2008
7345620 Method and device for the adaptive regulation of power Mar. 18, 2008
7342986 Digital PLL device Mar. 11, 2008
7298313 Radar-compatible data link system (U) Nov. 20, 2007
7274323 Remote phase synchronization using a low-bandwidth timing referencer Sep. 25, 2007
7239266 Radar altimeter Jul. 3, 2007
7151476 Radar system having a beamless emission signature Dec. 19, 2006
7133324 Synchronous dynamic random access memory devices having dual data rate 1 (DDR1) and DDR2 modes of operation and methods of operating same Nov. 7, 2006
7019684 Phase lock loop circuitry Mar. 28, 2006
6636979 System for measuring phase error between two clocks by using a plurality of phase latches with different respective delays Oct. 21, 2003
6486826 Arrangement for the precise distance measuring, in particular the filling level measuring Nov. 26, 2002

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