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Class Information
Number: 330/103
Name: Amplifiers > Signal feedback > Multiple feedback paths
Description: Subject matter including two or more signal feedback circuit means as therein defined and not previously provided for in this schedule.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7403067 |
Compensation circuit for amplifiers having multiple stages |
Jul. 22, 2008 |
| 7403068 |
Method for double sampling loop negative feedback and double sampling negative feedback amplifier |
Jul. 22, 2008 |
| 7366427 |
Line driver with variable bandwidth control |
Apr. 29, 2008 |
| 7279970 |
Feedback circuit |
Oct. 9, 2007 |
| 7151405 |
Estimating power amplifier non-linearity in accordance with memory depth |
Dec. 19, 2006 |
| 7061313 |
Dual feedback linear amplifier |
Jun. 13, 2006 |
| 7053705 |
Mixed-mode (current-voltage) audio amplifier |
May. 30, 2006 |
| 7012466 |
Voltage-to-current converter |
Mar. 14, 2006 |
| 7010284 |
Wireless communications device including power detector circuit coupled to sample signal at interior node of amplifier |
Mar. 7, 2006 |
| 7002409 |
Compensation circuit for amplifiers having multiple stages |
Feb. 21, 2006 |
| 6946910 |
Configurable feedback path in an amplitude control system |
Sep. 20, 2005 |
| 6825718 |
Impedance matching circuit |
Nov. 30, 2004 |
| 6646463 |
Impedance emulator |
Nov. 11, 2003 |
| 6600367 |
Low distortion amplifier |
Jul. 29, 2003 |
| 6566947 |
Combined active impedance and filter in line drivers |
May. 20, 2003 |
| 6392478 |
Amplification device having an adjustable bandwidth |
May. 21, 2002 |
| 6359505 |
Complementary pair-configured telecommunication line driver having synthesized output impedance |
Mar. 19, 2002 |
| 6351137 |
Impedance emulator |
Feb. 26, 2002 |
| 5939951 |
Methods and apparatus for modulating, demodulating and amplifying |
Aug. 17, 1999 |
| 5856758 |
Low distortion driver employing positive feedback for reducing power loss in output impedance that effectively matches the impedance of driven line |
Jan. 5, 1999 |
| 5828264 |
Two-stage operational amplifier circuit with wide output voltage swings |
Oct. 27, 1998 |
| 5815804 |
Dual-band filter network |
Sep. 29, 1998 |
| 5719527 |
Method and apparatus for amplifying, modulating and demodulating |
Feb. 17, 1998 |
| 5705951 |
Method for correction of error signals in a signal amplification system and an apparatus used for that purpose |
Jan. 6, 1998 |
| 5382919 |
Wideband constant impedance amplifiers |
Jan. 17, 1995 |
| 5317277 |
Power amplifying apparatus for supplying A.C. signals having a maximum loop gain at a desired frequency |
May. 31, 1994 |
| 4897610 |
Negative-feedback amplifier with accurately defined input or output impedance combined with high or low output or input impedance respectively |
Jan. 30, 1990 |
| 4775842 |
Multi-output feedback amplifier |
Oct. 4, 1988 |
| 4757270 |
High gain feedback amplifier |
Jul. 12, 1988 |
| 4710727 |
Nonlinear distortion synthesizer using over-threshold power-function feedback |
Dec. 1, 1987 |
| 4661789 |
Microwave recursive filter |
Apr. 28, 1987 |
| 4644138 |
Temperature control system with simplified controller and power supply |
Feb. 17, 1987 |
| 4453132 |
Active filter |
Jun. 5, 1984 |
| 4441085 |
Signal amplifying apparatus |
Apr. 3, 1984 |
| 4420723 |
Phase locked loop amplifier for variable amplitude radio waves |
Dec. 13, 1983 |
| 4406923 |
Automatic loudness controller |
Sep. 27, 1983 |
| 4358739 |
Wide-band direct-current coupled transistor amplifier |
Nov. 9, 1982 |
| 4292468 |
Frequency selection circuit |
Sep. 29, 1981 |
| 4243943 |
Feedback systems |
Jan. 6, 1981 |
| 4169996 |
Operational amplifier with slew recovery enhancement |
Oct. 2, 1979 |
| 4166982 |
Logical circuit reference electric level generating circuitry |
Sep. 4, 1979 |
| 4151478 |
Nonlinearly variable gain apparatus |
Apr. 24, 1979 |
| 4106384 |
Variable filter circuit, especially for synthesizing and shaping tone signals |
Aug. 15, 1978 |
| 4107622 |
Tone controller |
Aug. 15, 1978 |
| 4088962 |
Self biasing differential amplifier |
May. 9, 1978 |
| 4080580 |
Variable equalizer |
Mar. 21, 1978 |
| 4078215 |
Electronic filter circuit |
Mar. 7, 1978 |
| 4069459 |
Feedback capacitor divider |
Jan. 17, 1978 |
| 4069461 |
Amplifier circuit having two negative feedback circuits |
Jan. 17, 1978 |
| 4066976 |
Amplifier with variable gain |
Jan. 3, 1978 |
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