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Class Information
Number: 330/280
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including gain control means > And significant control voltage developing means > With delay means
Description: Subject matter including circuit means which impart to the control voltage, a minimum level at which the control voltage developing means begins to function.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7302021 |
Digital broadcast receiving apparatus |
Nov. 27, 2007 |
| 7292103 |
Amplifier system having compensated amplification variation |
Nov. 6, 2007 |
| 7199665 |
Single to dual non-overlapping converter |
Apr. 3, 2007 |
| 6977548 |
Predistortion circuit, low-distortion power amplifier, and control methods therefor |
Dec. 20, 2005 |
| 6960957 |
Predistortion circuit, low-distortion power amplifier, and control methods therefor |
Nov. 1, 2005 |
| 6859101 |
Frequency-selective phase/delay control for an amplifier |
Feb. 22, 2005 |
| 6831516 |
Method of forming a variable propagation delay semiconductor device and structure therefor |
Dec. 14, 2004 |
| 6763470 |
System and method for dynamically amplifying a delayed analog signal based on amplitude information obtained from its digital representation |
Jul. 13, 2004 |
| 6664850 |
Delay variability reduction method and apparatus |
Dec. 16, 2003 |
| 6603359 |
High-frequency power amplifying apparatus |
Aug. 5, 2003 |
| 6590449 |
Predistortion circuit, low-distortion power amplifier, and control methods therefor |
Jul. 8, 2003 |
| 6573786 |
Electronic devices comprising an audio amplifier and methods for controlling such electronic devices |
Jun. 3, 2003 |
| 6531921 |
Operational amplifier |
Mar. 11, 2003 |
| 6484017 |
Up converter of base station transmitter in wireless communication system and method of controlling outputs thereof |
Nov. 19, 2002 |
| 6380804 |
Method and apparatus for switching stages of a multistage amplifier quickly between operational modes |
Apr. 30, 2002 |
| 6133789 |
Method and system for robustly linearizing a radio frequency power amplifier using vector feedback |
Oct. 17, 2000 |
| 6121835 |
Variable time delay network, method and apparatus thereof |
Sep. 19, 2000 |
| 6107879 |
Automatic dynamic range control circuit |
Aug. 22, 2000 |
| 6047167 |
Output power control device |
Apr. 4, 2000 |
| 5805022 |
Circuit for automatically regulating the gain of a differential amplifier |
Sep. 8, 1998 |
| 5745016 |
Method for improving power measurement implemented with a directional coupler at low power levels |
Apr. 28, 1998 |
| 5699017 |
Automatic gain control circuit |
Dec. 16, 1997 |
| 5677962 |
Hybrid analog and digital amplifier with a delayed step change in the digital gain |
Oct. 14, 1997 |
| 5672999 |
Audio amplifier clipping avoidance method and apparatus |
Sep. 30, 1997 |
| 5606285 |
Power control circuit for use with transmitter |
Feb. 25, 1997 |
| 5548833 |
Data independent automatic gain control circuit for telecommunication applications |
Aug. 20, 1996 |
| 5515004 |
Method and apparatus for precision gain control for amplified signals |
May. 7, 1996 |
| 5515008 |
Output level automatic control apparatus |
May. 7, 1996 |
| 5483198 |
Method and apparatus for controlling amplifier power |
Jan. 9, 1996 |
| 5475342 |
Amplifier for stably maintaining a constant output |
Dec. 12, 1995 |
| 5412341 |
Power control apparatus and method for a radio frequency amplifier |
May. 2, 1995 |
| 5404115 |
Variable gain amplifier |
Apr. 4, 1995 |
| 5363057 |
Control device for power amplifier |
Nov. 8, 1994 |
| 5339046 |
Temperature compensated variable gain amplifier |
Aug. 16, 1994 |
| 5337006 |
Output level control circuit for use in RF transmitter |
Aug. 9, 1994 |
| 5337020 |
Differential radio frequency detector/comparator for power level control |
Aug. 9, 1994 |
| 5327101 |
Distortion-free limiter for a power amplifier |
Jul. 5, 1994 |
| 5304947 |
Arrangement for eliminating offset errors in a power control circuit of a pulsed transmitter final amplifier |
Apr. 19, 1994 |
| 5203016 |
Signal quality-dependent adaptive recursive integrator |
Apr. 13, 1993 |
| 5122760 |
Detector for automatic gain control amplifier circuit |
Jun. 16, 1992 |
| 5063311 |
Programmable time delay circuit for digital logic circuits |
Nov. 5, 1991 |
| 5051707 |
Gain control circuit for amplifier having stepwise variable gain |
Sep. 24, 1991 |
| 5045809 |
Automatic gain control (AGC) circuit for a trunk interface in a private branch exchange (PBX) |
Sep. 3, 1991 |
| 4987383 |
Integrated compression amplifier having programmable threshold voltage |
Jan. 22, 1991 |
| 4870372 |
AGC delay on an integrated circuit |
Sep. 26, 1989 |
| 4829270 |
Compansion system |
May. 9, 1989 |
| 4779059 |
Current mirror circuit |
Oct. 18, 1988 |
| 4743863 |
Device to increase the dynamic ratio of an amplifier circuit, especially that of an on-board MLS receiver |
May. 10, 1988 |
| 4694201 |
Current-saving CMOS input buffer |
Sep. 15, 1987 |
| 4647876 |
Extended response dynamic noise reduction system |
Mar. 3, 1987 |
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