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Class Information
Number: 330/75
Name: Amplifiers > Signal feedback
Description: Subject matter wherein signal feedback circuit means are provided to superimpose a portion of the electrical signal output energy on the amplifier input signal.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7423480 |
AC amplifier for precision measurement |
Sep. 9, 2008 |
| 7395038 |
High-efficiency modulating RF amplifier |
Jul. 1, 2008 |
| 7339436 |
Ultra broad-band low noise amplifier utilizing dual feedback technique |
Mar. 4, 2008 |
| 7221226 |
Amplifying apparatus with automatic level controller |
May. 22, 2007 |
| 7164893 |
Method and apparatus for optimizing supply modulation in a transmitter |
Jan. 16, 2007 |
| 7161419 |
Sensor device and a signal amplification device of a small detection signal provided by the sensor |
Jan. 9, 2007 |
| 7113037 |
Performing remote power amplifier linearization |
Sep. 26, 2006 |
| 7099635 |
High-efficiency modulating RF amplifier |
Aug. 29, 2006 |
| 7068098 |
Slew rate enhancement circuit |
Jun. 27, 2006 |
| 6985033 |
Circuits and methods for adjusting power amplifier predistortion, and power amplifiers and other devices including the same |
Jan. 10, 2006 |
| 6930548 |
Method and system for improving amplifier efficiency |
Aug. 16, 2005 |
| 6879216 |
Integrated circuit that provides access to an output node of a filter having an adjustable bandwidth |
Apr. 12, 2005 |
| 6847807 |
Transmission circuit and radio transmission apparatus |
Jan. 25, 2005 |
| 6833757 |
Method and system for improving amplifier efficiency |
Dec. 21, 2004 |
| 6766153 |
Dynamic automatic gain control circuit employing kalman filtering |
Jul. 20, 2004 |
| 6647073 |
Linearisation and modulation device |
Nov. 11, 2003 |
| 6566947 |
Combined active impedance and filter in line drivers |
May. 20, 2003 |
| 6407631 |
Charge-type sensor amplifying circuit |
Jun. 18, 2002 |
| 6023363 |
Optical transmission apparatus |
Feb. 8, 2000 |
| 6005316 |
Current mode switching for tri-state amplifiers in magnetic bearing control systems |
Dec. 21, 1999 |
| 5977824 |
Circuit feedback loop with monitored loop gain |
Nov. 2, 1999 |
| 5515001 |
Current-measuring operational amplifier circuits |
May. 7, 1996 |
| 5347529 |
Method for generating a distortion-free, frequency-modulated optical signal and apparatus for the implementation of such a method |
Sep. 13, 1994 |
| 5327095 |
Method and circuit for increasing the output impedance of an inactive amplifier |
Jul. 5, 1994 |
| 4644138 |
Temperature control system with simplified controller and power supply |
Feb. 17, 1987 |
| 4618814 |
Voltage-to-current converter circuit |
Oct. 21, 1986 |
| 4580104 |
High voltage operational amplifier |
Apr. 1, 1986 |
| 4409556 |
Amplifier arrangement with very low distortion |
Oct. 11, 1983 |
| 4383222 |
Half-wave signal isolator with compensator means to reduce temperature-dependent effects |
May. 10, 1983 |
| 4360784 |
Transformer coupled isolation amplifier |
Nov. 23, 1982 |
| 4191929 |
Isolation amplifier with high linearity |
Mar. 4, 1980 |
| 4065726 |
Negative feedback amplifier and lever shifter |
Dec. 27, 1977 |
| 4059807 |
Pulse width modulated amplifier |
Nov. 22, 1977 |
| 4021745 |
Pulse width modulated signal amplifier |
May. 3, 1977 |
| 4004246 |
Pulse width modulated signal amplifier |
Jan. 18, 1977 |
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