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Class Information
Number: 331/137
Name: Oscillators > Phase shift type > With r.c. ladder-type phase shift network
Description: Oscillators wherein the amplifier and the passive phase shifting network each have a total phase shift other than zero or 360 degrees, and wherein the passive phase shifting network is of the ladder-type consisting only of resistive and capacitive components. Usually the amplifier and the passive phase shifting network each have a total phase shift of 180 degrees.










Patents under this class:

Patent Number Title Of Patent Date Issued
8120436 System and method for implementing an oscillator Feb. 21, 2012
8044734 Method and apparatus for mitigating VCO pulling Oct. 25, 2011
7865163 Time constant automatic adjusting circuit, filter circuit system, and method of automatically adjusting time constant Jan. 4, 2011
7825741 Frequency multipliers using multi-phase oscillation Nov. 2, 2010
7583948 Time constant automatic adjusting circuit, filter circuit system, and method of automatically adjusting time constant Sep. 1, 2009
7397317 Quadrature signal generator for tuning phases of all of four generated quadrature signals Jul. 8, 2008
7205857 Oscillator with quadrature output in a cross-coupled configuration Apr. 17, 2007
7199676 Frequency adjustment circuit Apr. 3, 2007
7142596 Integrated circuit implementation for power and area efficient adaptive equalization Nov. 28, 2006
6995625 Oscillator with quadrature output in a cross-coupled configuration Feb. 7, 2006
6768364 Quadrature signal generation with phase error correction Jul. 27, 2004
6639479 Highly stable integrated time reference Oct. 28, 2003
6590464 Resistor-capacitor oscillator circuit Jul. 8, 2003
5982248 Integrated circuit replacement operating clock signal generator having a crystal oscillator Nov. 9, 1999
5610560 Oscillator with switched reactive elements Mar. 11, 1997
5459438 Negative feedback frequency stabilized pulse oscillator Oct. 17, 1995
4145670 Multiphase signal oscillator Mar. 20, 1979
3983512 Current controlled electrical circuits Sep. 28, 1976











 
 
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