| |
 |
|
Class Information
Number: 331/8
Name: Oscillators > Automatic frequency stabilization using a phase or frequency sensing means > Transistorized controls
Description: Subject matter wherein the A.F.S. circuit of the oscillator includes semiconductor means, such as transistors.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7400205 |
Frequency synthesizer and oscillation control method of frequency synthesizer |
Jul. 15, 2008 |
| 7339439 |
Voltage-controlled oscillator with multi-phase realignment of asymmetric stages |
Mar. 4, 2008 |
| 7339438 |
Phase and delay locked loops and semiconductor memory device having the same |
Mar. 4, 2008 |
| 7304544 |
Automatic phase lock loop design using geometric programming |
Dec. 4, 2007 |
| 7253691 |
PLL clock generator circuit and clock generation method |
Aug. 7, 2007 |
| 7218178 |
Frequency generator with a phase locked loop |
May. 15, 2007 |
| 7199673 |
Precharge circuit |
Apr. 3, 2007 |
| 7173494 |
Method and system for operating a feedback system for a voltage controlled oscillator that involves correcting for offset related to the feedback system |
Feb. 6, 2007 |
| 7146149 |
High isolation switch buffer for frequency hopping radios |
Dec. 5, 2006 |
| 7126432 |
Multi-phase realigned voltage-controlled oscillator and phase-locked loop incorporating the same |
Oct. 24, 2006 |
| 7053727 |
Trimming of a two point phase modulator |
May. 30, 2006 |
| 6992536 |
Voltage-controlled oscillator |
Jan. 31, 2006 |
| 6954110 |
Replica cell for ring oscillator |
Oct. 11, 2005 |
| 6919769 |
Method and apparatus for fast lock acquisition in self-biased phase locked loops |
Jul. 19, 2005 |
| 6909330 |
Automatic phase lock loop design using geometric programming |
Jun. 21, 2005 |
| 6897733 |
Low offset and low glitch energy charge pump for PLL-based timing recovery systems |
May. 24, 2005 |
| 6894570 |
Fast frequency locking method and architecture realized by employing adaptive asymmetric charge-pump current mechanism |
May. 17, 2005 |
| 6885251 |
Low spurious charge pump |
Apr. 26, 2005 |
| 6882237 |
Capture range control mechanism for voltage controlled oscillators |
Apr. 19, 2005 |
| 6879218 |
Frequency modulation corrector keeping a good oscillating signal quality and suppressing dependability of a modulation degree |
Apr. 12, 2005 |
| 6867654 |
Additive phase detector and its use in high speed phase-locked loops |
Mar. 15, 2005 |
| 6859108 |
Current biased phase locked loop |
Feb. 22, 2005 |
| 6774730 |
Power rails glitch noise insensitive charge pump |
Aug. 10, 2004 |
| 6734739 |
Fractional-frequency-modulation PLL synthesizer that suppresses spurious signals |
May. 11, 2004 |
| 6680654 |
Phase locked loop with offset cancellation |
Jan. 20, 2004 |
| 6583675 |
Apparatus and method for phase lock loop gain control using unit current sources |
Jun. 24, 2003 |
| 6570457 |
Phase locked loop using sample and hold after phase detector |
May. 27, 2003 |
| 6563389 |
Phase locked loop with charge injection cancellation |
May. 13, 2003 |
| 6549080 |
Electronic circuit, particularly for a mobile transceiver |
Apr. 15, 2003 |
| 6538517 |
Frequency phase detector for differentiating frequencies having small phase differences |
Mar. 25, 2003 |
| 6529082 |
Dual mode charge pump |
Mar. 4, 2003 |
| 6525613 |
Efficient current feedback buffer |
Feb. 25, 2003 |
| 6515520 |
Charge pump circuit for phase-locked loop circuitry |
Feb. 4, 2003 |
| 6512419 |
Method and apparatus to tune and calibrate an on-chip oscillator in a wireless transceiver chip |
Jan. 28, 2003 |
| 6504436 |
Transconductance tuning circuit with independent frequency and amplitude control |
Jan. 7, 2003 |
| 6498538 |
Low jitter integrated phase locked loop with broad tuning range |
Dec. 24, 2002 |
| 6466098 |
Analogue-controlled phase interpolator |
Oct. 15, 2002 |
| 6466100 |
Linear voltage controlled oscillator transconductor with gain compensation |
Oct. 15, 2002 |
| 6456166 |
Semiconductor integrated circuit and phase locked loop circuit |
Sep. 24, 2002 |
| 6404290 |
Fast change charge pump having switchable boost function |
Jun. 11, 2002 |
| 6356160 |
Phase lock loop and automatic gain control circuitry for clock recovery |
Mar. 12, 2002 |
| 6356158 |
Phase-locked loop employing programmable tapped-delay-line oscillator |
Mar. 12, 2002 |
| 6353368 |
VCO circuit using negative feedback to reduce phase noise |
Mar. 5, 2002 |
| 6346861 |
Phase locked loop with high-speed locking characteristic |
Feb. 12, 2002 |
| 6342819 |
Frequency synthesizer device and mobile radio device using the same |
Jan. 29, 2002 |
| 6329882 |
Third-order self-biased phase-locked loop for low jitter applications |
Dec. 11, 2001 |
| 6326850 |
High frequency signal generator from a horological time base |
Dec. 4, 2001 |
| 6326852 |
Low offset and low glitch energy charge pump for PLL-based timing recovery systems |
Dec. 4, 2001 |
| 6317006 |
Frequency synthesizer utilizing phase shifted control signals |
Nov. 13, 2001 |
| 6313707 |
Digital phase-locked loop with pulse controlled charge pump |
Nov. 6, 2001 |
|
|
|
