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Class Information
Number: 330/109
Name: Amplifiers > Signal feedback > Frequency responsive feedback means
Description: Subject matter wherein the "signal feedback circuit means" includes circuit means which acts on the signal feedback to affect some frequency component of the signal feedback differently from the other frequency components of the signal, as for example, a tuned circuit which eliminates a frequency component of the signal feedback or an equalizer which emphasizes or de-emphasizes the amplitude of some frequency range of the signal feedback with respect to others.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7439802 |
Unilateral feedback power amplifier and method for realizing the same |
Oct. 21, 2008 |
| 7423483 |
Increasing amplifier bandwidth by positive capacitive feedback |
Sep. 9, 2008 |
| 7423489 |
Low return loss resistive feedback amplifier |
Sep. 9, 2008 |
| 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 |
| 7340226 |
Cartesian loop transmitter and method of adjusting an output level of such transmitter |
Mar. 4, 2008 |
| 7292098 |
Operational amplifier |
Nov. 6, 2007 |
| 7271660 |
Selectively adding auxiliary frequency compensation depending on the behaviour of an output transistor of a rail-to-rail operational amplifier |
Sep. 18, 2007 |
| 7230483 |
Negative feedback system with an error compensation scheme |
Jun. 12, 2007 |
| 7215191 |
Device for amplitude adjustment and rectification made with MOS technology |
May. 8, 2007 |
| 7184099 |
Controllable signal baseline and frequency emphasis circuit |
Feb. 27, 2007 |
| 7184737 |
Image-rejection I/Q demodulators |
Feb. 27, 2007 |
| 7154330 |
Stability compensation for adjustable gain amplifier |
Dec. 26, 2006 |
| 7126415 |
Switched-capacitor circuits with reduced finite-gain effect |
Oct. 24, 2006 |
| 7061313 |
Dual feedback linear amplifier |
Jun. 13, 2006 |
| 7046080 |
Signal processing circuit |
May. 16, 2006 |
| 7026870 |
Low-noise active RC signal processing circuit |
Apr. 11, 2006 |
| 7002409 |
Compensation circuit for amplifiers having multiple stages |
Feb. 21, 2006 |
| 6917257 |
Apparatus and method for equalizing received signals |
Jul. 12, 2005 |
| 6909321 |
Active isolated-integrator low-pass filter with attenuation poles |
Jun. 21, 2005 |
| 6861902 |
Self oscillating power amplifier |
Mar. 1, 2005 |
| 6798288 |
Receive band rejection for a digital RF amplifier |
Sep. 28, 2004 |
| 6798285 |
Amplifier improvements |
Sep. 28, 2004 |
| 6778011 |
Pulse-width modulation circuit and power amplifier circuit |
Aug. 17, 2004 |
| 6768374 |
Programmable gain amplifier with single stage switched capacitor circuit using bandwidth balancing |
Jul. 27, 2004 |
| 6731164 |
Capacitor current multiplier capacitive feedback circuit |
May. 4, 2004 |
| 6628164 |
Method and apparatus for exponential gain variations with a linearly varying input code |
Sep. 30, 2003 |
| 6624693 |
Amplification circuit for electric charge type sensor |
Sep. 23, 2003 |
| 6611173 |
Miller effect-based circuit for splitting poles |
Aug. 26, 2003 |
| 6600367 |
Low distortion amplifier |
Jul. 29, 2003 |
| 6590448 |
Operational amplifier topology and method |
Jul. 8, 2003 |
| 6573791 |
Multipath nested Gm nested miller compensation |
Jun. 3, 2003 |
| 6573790 |
Wide-bandwidth operational amplifier |
Jun. 3, 2003 |
| 6563377 |
Class D switching audio amplifier |
May. 13, 2003 |
| 6556083 |
Method and apparatus for maintaining stability in a circuit under variable load conditions |
Apr. 29, 2003 |
| 6515540 |
High order multi-path operational amplifier with output saturation recovery |
Feb. 4, 2003 |
| 6469576 |
Amplifier circuit for a physical random number generator and a random number generator using the same |
Oct. 22, 2002 |
| 6407631 |
Charge-type sensor amplifying circuit |
Jun. 18, 2002 |
| 6392478 |
Amplification device having an adjustable bandwidth |
May. 21, 2002 |
| 6388516 |
Precision high speed magnetic coil driver circuit |
May. 14, 2002 |
| 6369655 |
Feedback circuit and amplifier and mixer comprising the same |
Apr. 9, 2002 |
| 6335655 |
Filter circuit |
Jan. 1, 2002 |
| 6292052 |
Output amplifier for a discrete filter-less optical reference receiver |
Sep. 18, 2001 |
| 6281747 |
Power efficient line driver |
Aug. 28, 2001 |
| 6278331 |
System and method for compensating wafer parameters |
Aug. 21, 2001 |
| 6271719 |
Operational filter building block |
Aug. 7, 2001 |
| 6268768 |
Amplifier having linear characteristics |
Jul. 31, 2001 |
| 6255905 |
Active filter circuit having a T-network input arrangement that provides a high input impedance |
Jul. 3, 2001 |
| 6252459 |
System and method for a dual bandwidth capacitor multiplying filter |
Jun. 26, 2001 |
| 6246283 |
Power efficient line driver |
Jun. 12, 2001 |
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