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Class Information
Number: 330/293
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including signal feedback means > Having negative feedback
Description: Subject matter wherein the signal feedback which is superimposed on the input signal has at least one component thereof opposite in phase to the input signal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7372327 |
Input structure for a power amplifier and associated methods |
May. 13, 2008 |
| 7248119 |
Broadband amplifier with improved noise figure and distortion characteristics |
Jul. 24, 2007 |
| 7230483 |
Negative feedback system with an error compensation scheme |
Jun. 12, 2007 |
| 7173487 |
Power amplification circuit and communication device using the same |
Feb. 6, 2007 |
| 7161427 |
Input structure for a power amplifier and associated methods |
Jan. 9, 2007 |
| 7088175 |
Low noise, electric field sensor |
Aug. 8, 2006 |
| 7023278 |
Digital power amplifier level control |
Apr. 4, 2006 |
| 6989716 |
Variable gain amplifier |
Jan. 24, 2006 |
| 6952131 |
Digital PWM input D class amplifier by PWM negative feedback |
Oct. 4, 2005 |
| 6873207 |
Power amplification circuit and communication device using the same |
Mar. 29, 2005 |
| 6853251 |
Self-adjusting winner lineup amplifier |
Feb. 8, 2005 |
| 6825724 |
Amplifier and method for processing signals |
Nov. 30, 2004 |
| 6621331 |
Variable negative resistance cell for bipolar integrated circuits |
Sep. 16, 2003 |
| 6545620 |
Current-to-voltage converter with controllable gain, and signal processing circuit comprising such a converter |
Apr. 8, 2003 |
| 6369654 |
Semiconductor device |
Apr. 9, 2002 |
| 6211730 |
Pre-amplifier circuit |
Apr. 3, 2001 |
| 6128354 |
Data detection pre-amplifier circuit |
Oct. 3, 2000 |
| 6121818 |
Mixer using replica voltage-current converter |
Sep. 19, 2000 |
| 6018262 |
CMOS differential amplifier for a delta sigma modulator applicable for an analog-to-digital converter |
Jan. 25, 2000 |
| 5977571 |
Low loss connecting arrangement for photodiodes |
Nov. 2, 1999 |
| 5963095 |
Amplifier circuit, a transmitter and a wireless telephone |
Oct. 5, 1999 |
| 5949288 |
Circuit arrangement with an operational amplifier |
Sep. 7, 1999 |
| 5939945 |
Amplifier with neuron MOS transistors |
Aug. 17, 1999 |
| 5914639 |
Amplifier with common base input stage |
Jun. 22, 1999 |
| 5886580 |
Tuned amplifier |
Mar. 23, 1999 |
| 5872482 |
Amplifier circuit having a pair of differential transistors with differing threshold values for perform offset compensation |
Feb. 16, 1999 |
| 5854574 |
Reference buffer with multiple gain stages for large, controlled effective transconductance |
Dec. 29, 1998 |
| 5844445 |
Feedback type pre-amplifier |
Dec. 1, 1998 |
| 5821813 |
Bidirectional amplifier |
Oct. 13, 1998 |
| 5805023 |
High frequency amplifier, receiver, and transmitter system |
Sep. 8, 1998 |
| 5777517 |
Semiconductor feedback amplifier having improved frequency characteristics |
Jul. 7, 1998 |
| 5769384 |
Low differential light level photoreceptors |
Jun. 23, 1998 |
| 5761317 |
Tube amplifier fat emulation structure |
Jun. 2, 1998 |
| 5751192 |
Integrated circuit and method for generating a transimpedance function |
May. 12, 1998 |
| 5736900 |
Method and apparatus for amplifying an electrical signal |
Apr. 7, 1998 |
| 5710523 |
Low noise-low distortion hemt low noise amplifier (LNA) with monolithic tunable HBT active feedback |
Jan. 20, 1998 |
| 5705950 |
Hybrid solid state/vacuum tube audio amplifier |
Jan. 6, 1998 |
| 5705951 |
Method for correction of error signals in a signal amplification system and an apparatus used for that purpose |
Jan. 6, 1998 |
| 5570065 |
Active bias for radio frequency power amplifier |
Oct. 29, 1996 |
| 5559472 |
Loss compensated gain cell for distributed amplifiers |
Sep. 24, 1996 |
| 5461343 |
Current mirror circuit |
Oct. 24, 1995 |
| 5451909 |
Feedback amplifier for regulated cascode gain enhancement |
Sep. 19, 1995 |
| 5416365 |
Local feedback stabilized emitter follower cascade |
May. 16, 1995 |
| 5399993 |
High input impedance amplifier |
Mar. 21, 1995 |
| 5398004 |
HBT direct-coupled low noise wideband microwave amplifier |
Mar. 14, 1995 |
| 5382918 |
Capacitance multiplier for the internal frequency compensation of switching regulator integrated circuits |
Jan. 17, 1995 |
| 5382919 |
Wideband constant impedance amplifiers |
Jan. 17, 1995 |
| 5374966 |
Low noise impedance-matched video amplifier |
Dec. 20, 1994 |
| 5365200 |
CMOS gauge driver |
Nov. 15, 1994 |
| 5352992 |
Amplifier circuit |
Oct. 4, 1994 |
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