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Class Information
Number: 331/57
Name: Oscillators > Ring oscillators
Description: Subject matter wherein the oscillator comprises three or more active elements connected or cascade, the output of one active element being connected to the input of another active element to form a closed chain or loop, the active elements being so connected and biased that they are caused to switch from a conducting to a nonconducting state in succession, cyclically, thereby generating self-sustained oscillations.

Patents under this class:

Patent Number Title Of Patent Date Issued
8710930 Differential ring oscillator and method for calibrating the differential ring oscillator Apr. 29, 2014
8710929 System and method for combined I/Q generation and selective phase interpolation Apr. 29, 2014
8692627 Oscillating signal generating apparatus and control signal generator of the oscillating signal generating apparatus Apr. 8, 2014
8692622 High-speed CMOS ring voltage controlled oscillator with low supply sensitivity Apr. 8, 2014
8686799 Low noise wide range voltage-controlled oscillator with transistor feedback Apr. 1, 2014
8680930 Oscillator, oscillator implementations and method of generating an osciallating signal Mar. 25, 2014
8674774 Aging diagnostic device, aging diagnostic method Mar. 18, 2014
8674773 Phase interpolator with voltage-controlled oscillator injection-lock Mar. 18, 2014
8670736 Crystal control scheme to improve performance of a receiver Mar. 11, 2014
8669818 Wave reversing system and method for a rotary traveling wave oscillator Mar. 11, 2014
8659363 OTA-based current-mode filter and oscillator Feb. 25, 2014
8638175 Coupled ring oscillator Jan. 28, 2014
8633774 Electronic pulse generator and oscillator Jan. 21, 2014
8624681 Low noise CMOS ring oscillator Jan. 7, 2014
8624680 Ring based impedance control of an output driver Jan. 7, 2014
8618888 Voltage controlled oscillator having a bandwidth adjusted amplitude control loop Dec. 31, 2013
8610511 High-frequency digitally controlled oscillator Dec. 17, 2013
8610510 Limiter circuit and voltage controlled oscillator including the same Dec. 17, 2013
8610509 Flexible low current oscillator for multiphase operations Dec. 17, 2013
8604885 Differential ring oscillator-type voltage control oscillator Dec. 10, 2013
8604884 VCO insensitive to power supply ripple Dec. 10, 2013
8598958 Temperature and/or voltage independent voltage controlled oscillator with programmable gain and/or output frequency range Dec. 3, 2013
8593197 Delay line circuit, delay locked loop and tester system including the same Nov. 26, 2013
8587383 Measuring bias temperature instability induced ring oscillator frequency degradation Nov. 19, 2013
8583711 Random number generation system with ring oscillators Nov. 12, 2013
8581668 Oscillator regeneration device Nov. 12, 2013
8581667 Tuning voltage range extension circuit and method Nov. 12, 2013
8570111 Single-staged balanced-output inductor-free oscillator and method thereof Oct. 29, 2013
8570109 Ring oscillator for generating oscillating clock signal Oct. 29, 2013
8570108 Injection-locking a slave oscillator to a master oscillator with no frequency overshoot Oct. 29, 2013
8558626 Method and apparatus for generating a clock signal Oct. 15, 2013
8558624 Semiconductor integrated circuit Oct. 15, 2013
8547179 PLL circuit and semiconductor device having the same Oct. 1, 2013
8547178 Single-event upset hardened ring oscillator Oct. 1, 2013
8542073 Variable-capacitance device Sep. 24, 2013
8542068 Oscillator with highly-adjustable bang-bang control Sep. 24, 2013
8531247 Device and method for generating a random bit sequence Sep. 10, 2013
8519799 Voltage controlled oscillator Aug. 27, 2013
8508309 Wideband phase modulation methods and apparatus Aug. 13, 2013
8508304 Serdes VCO with phased outputs driving frequency to voltage converter Aug. 13, 2013
8502612 Method and apparatus for determining within-die and across-die variation of analog circuits Aug. 6, 2013
8502611 Voltage controlled oscillator circuit, phase-locked loop circuit using the voltage controlled oscillator circuit, and semiconductor device provided with the same Aug. 6, 2013
8487708 Clock oscillator circuit and semiconductor device Jul. 16, 2013
8479558 Method and apparatus for determining a vapor signature based upon frequency Jul. 9, 2013
8456247 Monitoring negative bias temperature instability (NBTI) and/or positive bias temperature instability (PBTI) Jun. 4, 2013
8451064 Voltage-controlled oscillator module having adjustable oscillator gain and related operating methods May. 28, 2013
8446224 Network of tightly coupled performance monitors for determining the maximum frequency of operation of a semiconductor IC May. 21, 2013
8438902 Method and apparatus for determining a vapor signature based upon frequency May. 14, 2013
8436687 Oscillating apparatus May. 7, 2013
8427245 Ultra low power oscillator Apr. 23, 2013

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