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Class Information
Number: 455/262
Name: Telecommunications > Receiver or analog modulated signal frequency converter > Local control of receiver operation > Local oscillator frequency control > Automatic > Utilizing particular local oscillator control > Variable reactance (e.g., reactance tube) > Voltage controlled capacitor
Description: Subject matter in which the variable reactance is a device whose capacitance varies in accordance with a control voltage applied to the device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7603096 |
Mixer with self-calibrating carrier leakage mechanism |
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| 7599677 |
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Oct. 6, 2009 |
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Aug. 11, 2009 |
| 7353011 |
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Apr. 1, 2008 |
| 7162216 |
Wireless communication system |
Jan. 9, 2007 |
| 7120412 |
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Oct. 10, 2006 |
| 7092675 |
Apparatus and methods for generating radio frequencies in communication circuitry using multiple control signals |
Aug. 15, 2006 |
| 7079826 |
Digitally controlled analog RF filtering in subsampling communication receiver architecture |
Jul. 18, 2006 |
| 7031683 |
Apparatus and methods for calibrating signal-processing circuitry |
Apr. 18, 2006 |
| 6968168 |
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Nov. 22, 2005 |
| 6965761 |
Controlled oscillator circuitry for synthesizing high-frequency signals and associated method |
Nov. 15, 2005 |
| 6714772 |
Wireless communication system |
Mar. 30, 2004 |
| 6658244 |
Method and circuit for compensation control of offset voltages in a radio receiving circuit integrated in a circuit module |
Dec. 2, 2003 |
| 6574288 |
Method and apparatus for adjusting a digital control word to tune synthesized high-frequency signals for wireless communications |
Jun. 3, 2003 |
| 6549764 |
Method and apparatus for selecting capacitance amounts to vary the output frequency of a controlled oscillator |
Apr. 15, 2003 |
| 6388536 |
Method and apparatus for providing coarse and fine tuning control for synthesizing high-frequency signals for wireless communications |
May. 14, 2002 |
| 6369664 |
Voltage controlled oscillator and electronic apparatus using same |
Apr. 9, 2002 |
| 6310927 |
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Oct. 30, 2001 |
| 6271731 |
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Aug. 7, 2001 |
| 6249190 |
Differential oscillator |
Jun. 19, 2001 |
| 6236843 |
Radio terminal device for automatically correcting phase difference between a received signal and an internally generated signal |
May. 22, 2001 |
| 6226506 |
Method and apparatus for eliminating floating voltage nodes within a discreetly variable capacitance used for synthesizing high-frequency signals for wireless communications |
May. 1, 2001 |
| 6137372 |
Method and apparatus for providing coarse and fine tuning control for synthesizing high-frequency signals for wireless communications |
Oct. 24, 2000 |
| 6002303 |
Oscillator circuit having a differential configuration and method of forming same |
Dec. 14, 1999 |
| 5991605 |
Method and circuit for creating a modulated signal in a transceiver |
Nov. 23, 1999 |
| 5787342 |
Receiver |
Jul. 28, 1998 |
| 5600680 |
High frequency receiving apparatus |
Feb. 4, 1997 |
| 5532651 |
Tunable voltage controlled oscillator having microstrip resonator with cuts for better tuning |
Jul. 2, 1996 |
| 5493715 |
Multi-range voltage controlled resonant circuit |
Feb. 20, 1996 |
| 5486796 |
Oscillator circuit for receiving a wide frequency band signal |
Jan. 23, 1996 |
| 5469117 |
Voltage-controlled frequency oscillator |
Nov. 21, 1995 |
| 5319800 |
Switched capacitor load compensator |
Jun. 7, 1994 |
| 5029237 |
Radio receiver frequency control system |
Jul. 2, 1991 |
| 4847572 |
Electronic tuning circuit for AM receiver |
Jul. 11, 1989 |
| 4628540 |
Tuning arrangement having a substantially constant frequency difference between an RF-circuit and an oscillator circuit |
Dec. 9, 1986 |
| 4583244 |
Automatic frequency control for local oscillator used with an AM stereo decoder |
Apr. 15, 1986 |
| 4564822 |
TV Tuner oscillator with feedback for more low frequency power |
Jan. 14, 1986 |
| 4240115 |
Channel selection voltage generator |
Dec. 16, 1980 |
| 3959728 |
Local oscillation circuit for tuner having reduced inter-channel deviation in AFC sensitivity |
May. 25, 1976 |
| 3947772 |
AFC tuning circuit |
Mar. 30, 1976 |
| 3940714 |
AFC circuit with improved sensitivity |
Feb. 24, 1976 |
| 3934191 |
Circuit arrangement for generating a stabilized direct voltage with superposition of a control voltage |
Jan. 20, 1976 |
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