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Class Information
Number: 330/291
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including signal feedback means
Description: Subject matter wherein a portion of the electrical signal output energy is applied to the input of the amplifier.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7446612 |
Amplifier feedback and bias configuration |
Nov. 4, 2008 |
| 7444123 |
Transmitter and mobile communication terminal using the same |
Oct. 28, 2008 |
| 7429891 |
Method and system for low noise amplifier (LNA) gain adjustment through narrowband received signal strength indicator (NRSSI) |
Sep. 30, 2008 |
| 7385170 |
Ambient light suppression circuit for photodiode receiver applications |
Jun. 10, 2008 |
| 7336935 |
Dynamic power control circuit of wireless communication device |
Feb. 26, 2008 |
| 7248193 |
Delta-sigma modulator and its application to switching amplification circuit |
Jul. 24, 2007 |
| 7199666 |
Construction and use of preamps having discrete gain states |
Apr. 3, 2007 |
| 7190218 |
Differential or single-ended amplifier and relative control method |
Mar. 13, 2007 |
| 7187236 |
Rail-to-rail differential input amplification stage with main and surrogate differential pairs |
Mar. 6, 2007 |
| 7170345 |
Predistorter |
Jan. 30, 2007 |
| 7151412 |
Sliding cascode circuit |
Dec. 19, 2006 |
| 7148749 |
Closed loop power control with high dynamic range |
Dec. 12, 2006 |
| 7148745 |
Sleep mode recovery |
Dec. 12, 2006 |
| 7142058 |
On-chip temperature compensation circuit for an electronic device |
Nov. 28, 2006 |
| 7138869 |
Amplifier circuit |
Nov. 21, 2006 |
| 7106806 |
Reducing distortion of signals |
Sep. 12, 2006 |
| 7091790 |
Power amplifier (PA) efficiency with low current DC to DC converter |
Aug. 15, 2006 |
| 7078966 |
Power amplifier saturation detection and operation at maximum power |
Jul. 18, 2006 |
| 7042288 |
Charge amplifier for piezoelectric pressure sensor |
May. 9, 2006 |
| 7030701 |
Transimpedance amplification apparatus with source follower structure |
Apr. 18, 2006 |
| 6998913 |
Method and apparatus for linear low-frequency feedback in monolithic low-noise charge amplifiers |
Feb. 14, 2006 |
| 6998910 |
Amplifier using delta-sigma modulation |
Feb. 14, 2006 |
| 6995610 |
Amplifier and radio frequency tuner |
Feb. 7, 2006 |
| 6995609 |
Switching circuit and digital power amplifier |
Feb. 7, 2006 |
| 6965270 |
Regulated cascode amplifier with controlled saturation |
Nov. 15, 2005 |
| 6949977 |
Circuit arrangement having a transimpedance amplifier connected to a current limiter circuit |
Sep. 27, 2005 |
| 6906595 |
Variable gain current feedback amplifier |
Jun. 14, 2005 |
| 6903605 |
Offset cancellation techniques that utilize one of a plurality of offset cancellation sources |
Jun. 7, 2005 |
| 6897731 |
Method and circuit for overload recovery of an amplifier |
May. 24, 2005 |
| 6842075 |
Gain block with stable internal bias from low-voltage power supply |
Jan. 11, 2005 |
| 6816010 |
Transimpedance amplifier |
Nov. 9, 2004 |
| 6803820 |
Apparatus and method for reducing common-mode current in differential link |
Oct. 12, 2004 |
| 6763228 |
Precision automatic gain control circuit |
Jul. 13, 2004 |
| 6657485 |
Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor |
Dec. 2, 2003 |
| 6657486 |
MOS differential amplifier circuit having a wide linear input voltage range |
Dec. 2, 2003 |
| 6621335 |
Class D amplifier with passive RC network |
Sep. 16, 2003 |
| 6603347 |
Amplifier having controllable input impedance |
Aug. 5, 2003 |
| 6538537 |
Integrated circuit and resonance circuit |
Mar. 25, 2003 |
| 6529071 |
xDSL feedback class C-AB driver |
Mar. 4, 2003 |
| 6515546 |
Bias circuit for use with low-voltage power supply |
Feb. 4, 2003 |
| 6433639 |
High frequency power amplifier module and wireless communication system |
Aug. 13, 2002 |
| 6404286 |
Electrical arrangement having improved feedback stability |
Jun. 11, 2002 |
| 6353367 |
Cascode amplifier integrated circuit with reduced miller capacitance at an output buffer stage during a transient fall response |
Mar. 5, 2002 |
| 6285863 |
System and method for providing automatic gain control with high dynamic range |
Sep. 4, 2001 |
| 6188212 |
Low dropout voltage regulator circuit including gate offset servo circuit powered by charge pump |
Feb. 13, 2001 |
| 6181207 |
Current amplifier having a low input impedance |
Jan. 30, 2001 |
| 6167242 |
Offset voltage cancellation system for radio frequency power controllers |
Dec. 26, 2000 |
| 6128354 |
Data detection pre-amplifier circuit |
Oct. 3, 2000 |
| 6037834 |
Method and apparatus for automatic gain control with improved response time and stability |
Mar. 14, 2000 |
| 6026127 |
Autozero technique for a phase locked loop system |
Feb. 15, 2000 |
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