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Class Information
Number: 331/183
Name: Oscillators > Amplitude control or stabilization > Automatic
Description: Subject matter wherein means are provided for automatically controlling the amplitude of the generated oscillations in response to a change in some condition.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8710937 Low power voltage controlled oscillator (VCO) Apr. 29, 2014
8710929 System and method for combined I/Q generation and selective phase interpolation Apr. 29, 2014
8686798 Method and system for testing oscillator circuit Apr. 1, 2014
8674779 Reference current generator circuit Mar. 18, 2014
8648662 Oscillator circuit with a fast transient Feb. 11, 2014
8643445 Crystal oscillator circuit Feb. 4, 2014
8638173 System and method of calibrating a phase-locked loop while maintaining lock Jan. 28, 2014
8629730 Oscillator Jan. 14, 2014
8618889 Oscillation drive device, physical quantity measurement device and electronic apparatus Dec. 31, 2013
8618888 Voltage controlled oscillator having a bandwidth adjusted amplitude control loop Dec. 31, 2013
8610509 Flexible low current oscillator for multiphase operations Dec. 17, 2013
8570112 Oscillator with MEMS resonator Oct. 29, 2013
8570113 Digital VCO calibration method and apparatus Oct. 29, 2013
8552808 Apparatus and method for oscillator resonator power control Oct. 8, 2013
8525605 Oscillator Sep. 3, 2013
8525603 Oscillating signal generating device and related method Sep. 3, 2013
8493156 High amplitude voltage-controlled oscillator with dynamic bias circuit Jul. 23, 2013
8471644 Digital automatic gain control circuits and methods for controlling the amplitude of a time-varying signal Jun. 25, 2013
8466754 Low phase noise MEMS-based oscillator with bifurcation and parametric noise squeezing Jun. 18, 2013
8378756 Drive loop for MEMS oscillator Feb. 19, 2013
8324978 Crystal oscillator clock circuit Dec. 4, 2012
8305153 Crystal oscillator with fast start-up and low current consumption Nov. 6, 2012
8294527 Oscillator circuit Oct. 23, 2012
8248176 Current source circuit and delay circuit and oscillating circuit using the same Aug. 21, 2012
8242854 Enhancing device reliability for voltage controlled oscillator (VCO) buffers under high voltage swing conditions Aug. 14, 2012
8232848 Semiconductor integrated circuit device Jul. 31, 2012
8188801 Delay circuit for low power ring oscillator May. 29, 2012
8188802 System and method for efficiently generating an oscillating signal May. 29, 2012
8169271 Interference resistant local oscillator May. 1, 2012
8134414 Clock, frequency reference, and other reference signal generator with frequency stability over temperature variation Mar. 13, 2012
8134417 Automatic amplitude control for voltage controlled oscillator Mar. 13, 2012
8120439 Fast start-up crystal oscillator Feb. 21, 2012
8120430 Stable VCO operation in absence of clock signal Feb. 21, 2012
8120435 PLL circuit and semiconductor device having the same Feb. 21, 2012
8098107 Voltage/current regulator system using constant loop gain Jan. 17, 2012
8093958 Clock, frequency reference, and other reference signal generator with a controlled quality factor Jan. 10, 2012
8089324 Varactor-free amplitude controlled oscillator(ACO) for system on chip and system on card Xtaless clock SOC Jan. 3, 2012
8076982 Voltage-controlled variable frequency oscillation circuit and signal processing circuit Dec. 13, 2011
8072274 Oscillation circuit Dec. 6, 2011
8067988 Low jitter and wide-range frequency synthesizer for low voltage operation Nov. 29, 2011
8063711 Crystal oscillator emulator Nov. 22, 2011
8044731 Oscillator circuit Oct. 25, 2011
8035455 Oscillator amplitude control network Oct. 11, 2011
8031026 System and method for efficiently generating an oscillating signal Oct. 4, 2011
7999628 Bias generation circuit and voltage controlled oscillator Aug. 16, 2011
7986191 Self-biased phase locked loop Jul. 26, 2011
7982553 Clock generator Jul. 19, 2011
7978017 Control voltage generator for a clock, frequency reference, and other reference signal generator Jul. 12, 2011
7975315 Atomic force microscope Jul. 5, 2011
7961060 Amplitude regulated resonant oscillator with sampled feedback Jun. 14, 2011

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