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Class Information
Number: 331/36C
Name: Oscillators > Automatic frequency stabilization using a phase or frequency sensing means > Particular frequency control means > Reactance device (e.g., variable capacitors, saturable inductors, reactance tubes, etc.) > Capacitor controlled afc
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7414482 |
Resonance mode selection using a resonator-synchronized second-order oscillator |
Aug. 19, 2008 |
| 7408422 |
Variable-capacitance circuit element |
Aug. 5, 2008 |
| 7400206 |
Clock circuit with programmable load capacitors |
Jul. 15, 2008 |
| 7400209 |
Oscillator circuit |
Jul. 15, 2008 |
| 7397319 |
Apparatus and method for phase lock loop gain control |
Jul. 8, 2008 |
| 7391272 |
Voltage controlled oscillator with full adder |
Jun. 24, 2008 |
| 7388439 |
Low pass filter and electronic device |
Jun. 17, 2008 |
| 7388446 |
Directly modulated CMOS VCO |
Jun. 17, 2008 |
| 7385539 |
All-digital phase locked loop (ADPLL) system |
Jun. 10, 2008 |
| 7382207 |
Oscillator circuit suppressing variation of oscillation frequency |
Jun. 3, 2008 |
| 7372343 |
Oscillator circuit |
May. 13, 2008 |
| 7365610 |
Push compensation in an oscillator |
Apr. 29, 2008 |
| 7362192 |
Low noise voltage-controlled oscillator |
Apr. 22, 2008 |
| 7358825 |
Variable capacitance circuit arrangement |
Apr. 15, 2008 |
| 7358823 |
Programmable capacitors and methods of using the same |
Apr. 15, 2008 |
| 7355490 |
Receiver having no tracking error |
Apr. 8, 2008 |
| 7352255 |
Circuit, system, and method for fine tuning crystal frequency accuracy |
Apr. 1, 2008 |
| 7352297 |
Method and apparatus for efficient implementation of digital filter with thermometer-code-like output |
Apr. 1, 2008 |
| 7348861 |
Method and apparatus for a crystal oscillator to achieve fast start-up time, low power and frequency calibration |
Mar. 25, 2008 |
| 7339420 |
Method of switching PLL characteristics and PLL circuit |
Mar. 4, 2008 |
| 7336134 |
Digitally controlled oscillator |
Feb. 26, 2008 |
| 7332951 |
Switched capacitor circuit capable of minimizing clock feedthrough effect and having low phase noise and method thereof |
Feb. 19, 2008 |
| 7332972 |
Phase-locked loop circuit |
Feb. 19, 2008 |
| 7323947 |
Oscillator circuit |
Jan. 29, 2008 |
| 7317363 |
Frequency synthesizer |
Jan. 8, 2008 |
| 7315218 |
Method and apparatus to center the frequency of a voltage-controlled oscillator |
Jan. 1, 2008 |
| 7304547 |
Method and apparatus to improve frequency stability of an integrated circuit oscillator |
Dec. 4, 2007 |
| 7301407 |
Capacitor bank and voltage controlled oscillator having the same |
Nov. 27, 2007 |
| 7298226 |
Noise tolerant voltage controlled oscillator |
Nov. 20, 2007 |
| 7292113 |
Multi-octave band tunable coupled-resonator oscillator |
Nov. 6, 2007 |
| 7292115 |
Method to differentially control LC voltage-controlled oscillators |
Nov. 6, 2007 |
| 7286023 |
Crystal oscillation circuit with frequency regulation |
Oct. 23, 2007 |
| 7283008 |
Oscillator circuit with temperature compensation function |
Oct. 16, 2007 |
| 7279994 |
Variable capacitance circuit having on/off switch for variable capacitance function, and voltage controlled oscillator using the variable capacitance circuit |
Oct. 9, 2007 |
| 7280002 |
Method and apparatus for biasing a metal-oxide-semiconductor capacitor for capacitive tuning |
Oct. 9, 2007 |
| 7276979 |
Oscillation device and mobile communication apparatus |
Oct. 2, 2007 |
| 7271673 |
Voltage controlled oscillator (VCO) tuning |
Sep. 18, 2007 |
| 7268632 |
Structure and method for providing gate leakage isolation locally within analog circuits |
Sep. 11, 2007 |
| 7268630 |
Phase-locked loop using continuously auto-tuned inductor-capacitor voltage controlled oscillator |
Sep. 11, 2007 |
| 7263336 |
Device, system and method to provide different bias voltages and common tuning voltage |
Aug. 28, 2007 |
| 7253693 |
Method and apparatus for noise compensation in an oscillator circuit |
Aug. 7, 2007 |
| 7250824 |
Voltage controlled oscillator with linear capacitance |
Jul. 31, 2007 |
| 7245190 |
Transformer-based VCO for both phase noise and tuning range improvement in bipolar technology |
Jul. 17, 2007 |
| 7245519 |
Digitally programmable capacitor array |
Jul. 17, 2007 |
| 7239212 |
Apparatus and method for phase lock loop gain control |
Jul. 3, 2007 |
| 7230504 |
Controlled oscillator |
Jun. 12, 2007 |
| 7221234 |
VCO with switchable varactor for low KVCO variation |
May. 22, 2007 |
| 7218182 |
Voltage controlled oscillator |
May. 15, 2007 |
| 7212073 |
Capacitive tuning network for low gain digitally controlled oscillator |
May. 1, 2007 |
| 7209016 |
Variable capacitance circuit arrangement |
Apr. 24, 2007 |
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