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Class Information
Number: 330/279
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including gain control means > And significant control voltage developing means
Description: Subject matter including specific details or distinctive characteristics of the gain control developing means.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7456690 |
Automatic gain control using multi-comparators |
Nov. 25, 2008 |
| 7443242 |
AGC circuit |
Oct. 28, 2008 |
| 7443435 |
Column amplifier with automatic gain selection for CMOS image sensors |
Oct. 28, 2008 |
| 7439807 |
Method and system for generating a temperature-compensated control signal |
Oct. 21, 2008 |
| 7411456 |
AGC circuit |
Aug. 12, 2008 |
| 7385449 |
Automatic gain control with three states of operation |
Jun. 10, 2008 |
| 7379511 |
Method for reducing DC offset error for single ended and differential signals |
May. 27, 2008 |
| 7369816 |
Highly accurate temperature sensor employing mixed-signal components |
May. 6, 2008 |
| 7363015 |
Wide-frequency-range television tuner |
Apr. 22, 2008 |
| 7358807 |
Protection of output stage transistor of an RF power amplifier |
Apr. 15, 2008 |
| 7356102 |
Gain compensation over temperature and frequency variations in wireless transceivers |
Apr. 8, 2008 |
| 7352244 |
Electronics parts for high frequency power amplifier |
Apr. 1, 2008 |
| 7352240 |
Method and apparatus for protecting devices in an RF power amplifier |
Apr. 1, 2008 |
| 7345536 |
Amplifier circuit and control method thereof |
Mar. 18, 2008 |
| 7342454 |
Analog multistage amplification circuit in the field of sensor |
Mar. 11, 2008 |
| 7336130 |
Attenuator, variable gain amplifier using the same, and electronic equipment |
Feb. 26, 2008 |
| 7323922 |
Digitally controlled gain stage having an analogue control input |
Jan. 29, 2008 |
| 7323937 |
Variable-gain amplifier |
Jan. 29, 2008 |
| 7319363 |
Method and circuit for controlling amplification |
Jan. 15, 2008 |
| 7302021 |
Digital broadcast receiving apparatus |
Nov. 27, 2007 |
| 7298208 |
Automatic level control circuit with improved recovery action |
Nov. 20, 2007 |
| 7298212 |
Automatic level control circuit with improved attack action |
Nov. 20, 2007 |
| 7295073 |
Automatic gain control apparatus |
Nov. 13, 2007 |
| 7288986 |
Communication semiconductor integrated circuit device and wireless communication system |
Oct. 30, 2007 |
| 7283792 |
Method and apparatus for providing limiting power adjustment in a wireless communication system |
Oct. 16, 2007 |
| 7279969 |
Signal amplification method and amplifier array |
Oct. 9, 2007 |
| 7276967 |
Signal level adjusting apparatus, gain value updating method, and program |
Oct. 2, 2007 |
| 7277678 |
Fast closed-loop power control for non-constant envelope modulation |
Oct. 2, 2007 |
| 7268990 |
Power amplifier protection |
Sep. 11, 2007 |
| 7265626 |
Fast-setting digital automatic gain control |
Sep. 4, 2007 |
| 7262665 |
Active bias circuit for low-noise amplifiers |
Aug. 28, 2007 |
| 7254244 |
Pop and click reduction using DAC power up and power down processing |
Aug. 7, 2007 |
| 7248107 |
Method of controlling a variable gain amplifier and electronic circuit |
Jul. 24, 2007 |
| 7242251 |
Controllable amplifier circuit with a variable discrete-value gain, use of the amplifier circuit and method for operation of an amplifier whose gain can be adjusted in discrete values |
Jul. 10, 2007 |
| 7224228 |
Semiconductor integrated circuit for high frequency power amplifier, electronic component for high frequency power amplifier, and radio communication system |
May. 29, 2007 |
| 7221225 |
Dual band power amplifier module for wireless communication devices |
May. 22, 2007 |
| 7215202 |
Programmable gain amplifier and method |
May. 8, 2007 |
| 7205841 |
Automatic gain control with three states of operation |
Apr. 17, 2007 |
| 7205842 |
Continuous alternating closed-open loop power control |
Apr. 17, 2007 |
| 7202741 |
Highly linear variable gain amplifier |
Apr. 10, 2007 |
| 7187914 |
Rectifiers and rectifying methods for use in telecommunications devices |
Mar. 6, 2007 |
| 7183845 |
Gain control methods and systems in an amplifier assembly |
Feb. 27, 2007 |
| 7176726 |
Integrated loss of signal detection with wide threshold range and precise hysteresis |
Feb. 13, 2007 |
| 7173492 |
High frequency power amplification electric part and wireless communication system |
Feb. 6, 2007 |
| 7167045 |
System and method for modifying output power of an information communication system |
Jan. 23, 2007 |
| 7167718 |
Transmission power control apparatus, transmission power control method, and mobile station |
Jan. 23, 2007 |
| 7164314 |
Power amplifier module for wireless communication devices |
Jan. 16, 2007 |
| 7148749 |
Closed loop power control with high dynamic range |
Dec. 12, 2006 |
| 7148748 |
Active protection circuit for load mismatched power amplifier |
Dec. 12, 2006 |
| 7145396 |
Method and apparatus for protecting devices in an RF power amplifier |
Dec. 5, 2006 |
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