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Class Information
Number: 331/48
Name: Oscillators > Plural oscillators > Adjustable frequency
Description: Subject matter wherein at least one of a plurality of oscillators is provided with means to change the generated frequency from one value to another.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7420429 |
Source coupled differential complementary colpitts oscillator |
Sep. 2, 2008 |
| 7342462 |
Quadrature LC voltage controlled oscillator with opposed bias and coupling control stages |
Mar. 11, 2008 |
| 7342465 |
Voltage-controlled oscillator with stable gain over a wide frequency range |
Mar. 11, 2008 |
| 7313369 |
Communication semiconductor integrated circuit and radio communication system |
Dec. 25, 2007 |
| 7199671 |
Systems and methods for clock generation using hot-swappable oscillators |
Apr. 3, 2007 |
| 7034623 |
Voltage controlled oscillator apparatus, method, and system |
Apr. 25, 2006 |
| 6995618 |
VCO feedback loop to reduce phase noise |
Feb. 7, 2006 |
| 6970048 |
Inductive-capacitive (LC) based quadrature voltage controlled oscillator (VCO) with deterministic quadrature signal phase relationship |
Nov. 29, 2005 |
| 6922111 |
Adaptive frequency clock signal |
Jul. 26, 2005 |
| 6911870 |
Quadrature voltage controlled oscillator utilizing common-mode inductive coupling |
Jun. 28, 2005 |
| 6870432 |
Unilateral coupling for a quadrature voltage controlled oscillator |
Mar. 22, 2005 |
| 6870429 |
Variable rate modulator |
Mar. 22, 2005 |
| 6850122 |
Quadrature oscillator and methods thereof |
Feb. 1, 2005 |
| 6791423 |
Quadrature coupled controllable oscillator and communication arrangement |
Sep. 14, 2004 |
| 6788154 |
Phase-locked loop with composite feedback signal formed from phase-shifted variants of output signal |
Sep. 7, 2004 |
| 6696897 |
System and method for voltage controlled oscillator phase interpolation |
Feb. 24, 2004 |
| 6686806 |
Ring VCO based on RC timing |
Feb. 3, 2004 |
| 6661297 |
Multi-octave wideband voltage controlled oscillator |
Dec. 9, 2003 |
| 6640311 |
Redundant oscillator and method for generating a regulated signal |
Oct. 28, 2003 |
| 6501583 |
Optical receiver module optical transmitter module phase-locked loop circuit voltage-controlled oscillator and frequency response controllable amplifier |
Dec. 31, 2002 |
| 6501338 |
Three-band switching oscillator suitable for size reduction |
Dec. 31, 2002 |
| 6483253 |
Light source |
Nov. 19, 2002 |
| 6437621 |
Waveform shaping device |
Aug. 20, 2002 |
| 6417740 |
Wide-band/multi-band voltage controlled oscillator |
Jul. 9, 2002 |
| 6292063 |
Oscillating apparatus including two-band resonance circuit |
Sep. 18, 2001 |
| 6236366 |
Hermetically sealed semiconductor module composed of semiconductor integrated circuit and antenna element |
May. 22, 2001 |
| 6188292 |
Two interconnected oscillators having adjustable coupling for controlling frequency |
Feb. 13, 2001 |
| 6150892 |
Method and device for digitally synthesizing frequency |
Nov. 21, 2000 |
| 6114916 |
Oscillation apparatus |
Sep. 5, 2000 |
| 6037842 |
Complementary metal-oxide semiconductor voltage controlled oscillator (CMOS VCO) |
Mar. 14, 2000 |
| 6031426 |
Phase locked loop with digital vernier control |
Feb. 29, 2000 |
| 6020781 |
Step-up circuit using two frequencies |
Feb. 1, 2000 |
| 6016081 |
Tunable oscillator using a reference input frequency |
Jan. 18, 2000 |
| 5982240 |
Voltage controlled oscillator using a plurality of switchable oscillators |
Nov. 9, 1999 |
| 5974362 |
Signal generator for testing radio frequency components |
Oct. 26, 1999 |
| 5926641 |
Clock frequency change circuit |
Jul. 20, 1999 |
| 5912596 |
Apparatus and method for frequency tuning an LC oscillator in a integrated clock circuit |
Jun. 15, 1999 |
| 5864258 |
VCO composed of plural ring oscillators and phase lock loop incorporating the VCO |
Jan. 26, 1999 |
| 5852384 |
Dual band oscillator circuit using strip line resonators |
Dec. 22, 1998 |
| 5821820 |
Dual band voltage controlled oscillator |
Oct. 13, 1998 |
| 5702426 |
Automatic adjustment of electrical signal parameters |
Dec. 30, 1997 |
| 5668507 |
Noise generator for evaluating mixed signal integrated circuits |
Sep. 16, 1997 |
| 5450039 |
Integrated circuit having self-contained voltage control oscillation circuit |
Sep. 12, 1995 |
| 5418496 |
Serial data clock recovery circuit using dual oscillator circuit |
May. 23, 1995 |
| 5418497 |
Low voltage VCO having two oscillator circuits of different frequencies |
May. 23, 1995 |
| 5408201 |
Frequency synthesizer using three subfrequency synthesizers for generating two different frequencies |
Apr. 18, 1995 |
| 5398007 |
Low-power baud rate generator including two oscillators |
Mar. 14, 1995 |
| 5339055 |
Serrodyne phase modulator having ramp generated by combining two oscillator signals |
Aug. 16, 1994 |
| 5327582 |
Wideband wireless communications receiver |
Jul. 5, 1994 |
| 5302920 |
Controllable multi-phase ring oscillators with variable current sources and capacitances |
Apr. 12, 1994 |
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