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Class Information
Number: 331/17
Name: Oscillators > Automatic frequency stabilization using a phase or frequency sensing means > Particular error voltage control (e.g., intergrating network)
Description: Subject matter wherein the A.F.S. loop of the oscillator is provided with means to modify or control the error voltage so as to compensate or correct for undesired changes in the error voltage brought about by some deficiency in the oscillator system, such as a drift in reference frequency, hunting due to instability around the A.F.S. loop, undesired shift in phase of side band frequencies, and so forth.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7616071 |
PLL circuit and semiconductor device provided with PLL circuit |
Nov. 10, 2009 |
| 7616069 |
Method and system for fast PLL close-loop settling after open-loop VCO calibration |
Nov. 10, 2009 |
| 7616068 |
Frequency synthesizer for integrated circuit radios |
Nov. 10, 2009 |
| 7616067 |
Phase synchronization circuit and electronic apparatus |
Nov. 10, 2009 |
| 7613267 |
Digitally-synthesized loop filter method and circuit particularly useful for a phase locked loop |
Nov. 3, 2009 |
| 7612618 |
PLL apparatus for OFDM system having variable channel bands and operating method thereof |
Nov. 3, 2009 |
| 7612617 |
Voltage-controlled oscillator gain calibration for two-point modulation in a phase-locked loop |
Nov. 3, 2009 |
| 7612590 |
Oscillating apparatus |
Nov. 3, 2009 |
| 7609756 |
Rotary clock flash analog to digital converter system and method |
Oct. 27, 2009 |
| 7609118 |
Phase-locked loop calibration system |
Oct. 27, 2009 |
| 7609117 |
Phase-locked loop circuit with current-pulse injection for improving linearity |
Oct. 27, 2009 |
| 7609108 |
Phase-locked loop and compound MOS capacitor thereof |
Oct. 27, 2009 |
| 7605667 |
Frequency synthesizer with a harmonic locked phase/frequency detector |
Oct. 20, 2009 |
| 7605664 |
All digital phase locked loop system and method |
Oct. 20, 2009 |
| 7605663 |
Method and apparatus for stabilizing output frequency of PLL (phase lock loop) and phase lock loop thereof |
Oct. 20, 2009 |
| 7602259 |
Voltage-controlled oscillator |
Oct. 13, 2009 |
| 7599418 |
Method and apparatus for a frequency hopper |
Oct. 6, 2009 |
| 7598816 |
Phase lock loop circuit with delaying phase frequency comparson output signals |
Oct. 6, 2009 |
| 7595699 |
Look loop circuit and method having improved lock time |
Sep. 29, 2009 |
| 7595698 |
PLL lock time reduction |
Sep. 29, 2009 |
| 7586379 |
Voltage controlled oscillator with operation current adjusting device |
Sep. 8, 2009 |
| 7586378 |
Method and system for using a frequency locked loop logen in oscillator systems |
Sep. 8, 2009 |
| 7583773 |
Frequency synthesizing device with automatic calibration |
Sep. 1, 2009 |
| 7583152 |
Phase-locked loop with self-correcting phase-to-digital transfer function |
Sep. 1, 2009 |
| 7580498 |
Closed loop control system and method of dynamically changing the loop bandwidth |
Aug. 25, 2009 |
| 7580443 |
Clock generating method and clock generating circuit |
Aug. 25, 2009 |
| 7573348 |
Arrangement and method for determining a gradient factor for a digitally controlled oscillator, and phase locked loop |
Aug. 11, 2009 |
| 7570123 |
Digitally controlled analog frequency synthesizer |
Aug. 4, 2009 |
| 7567643 |
Phase lock loop device |
Jul. 28, 2009 |
| 7567133 |
Phase-locked loop filter capacitance with a drag current |
Jul. 28, 2009 |
| 7567132 |
Synthesizer |
Jul. 28, 2009 |
| 7557671 |
Real time VCO gain non linearity calibration |
Jul. 7, 2009 |
| 7557663 |
Digital PLL for a system-on-chip for digital control of electronic power devices |
Jul. 7, 2009 |
| 7554413 |
Voltage controlled oscillator with compensation for power supply variation in phase-locked loop |
Jun. 30, 2009 |
| 7551039 |
Phase adjustment in phase-locked loops using multiple oscillator signals |
Jun. 23, 2009 |
| 7551037 |
PLL circuit having reduced pull-in time |
Jun. 23, 2009 |
| 7548123 |
Dividerless PLL architecture |
Jun. 16, 2009 |
| 7548122 |
PLL with switched parameters |
Jun. 16, 2009 |
| 7545937 |
Chrominance processing arrangement having immunity to colorstripe encoding |
Jun. 9, 2009 |
| 7545223 |
PLL circuit |
Jun. 9, 2009 |
| 7545222 |
Phase lock loop for rapid lock-in and method therefor |
Jun. 9, 2009 |
| 7541881 |
Power supply noise insensitive charge pump, loop filter, VCO control, and VCO |
Jun. 2, 2009 |
| 7541879 |
System for compensation of VCO non-linearity |
Jun. 2, 2009 |
| 7541877 |
Auto-adjusting high accuracy oscillator |
Jun. 2, 2009 |
| 7538623 |
Phase locked loop modulator calibration techniques |
May. 26, 2009 |
| 7538620 |
Phase lock control system for a voltage controlled oscillator |
May. 26, 2009 |
| 7536164 |
Controlling the frequency of an oscillator |
May. 19, 2009 |
| 7535272 |
Zero-delay buffer with common-mode equalizer for input and feedback differential clocks into a phase-locked loop (PLL) |
May. 19, 2009 |
| 7528666 |
Apparatus and method for phase lock loop gain control using unit current sources |
May. 5, 2009 |
| 7522005 |
K.sub.FM frequency tracking system using an analog correlator |
Apr. 21, 2009 |
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