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Class Information
Number: 330/306
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including frequency-responsive means in the signal transmission path > And bandpass, broadband (e.g., wideband) or sidepass means
Description: Subject matter including means which determines the range of the frequencies of the applied signal that will be amplified.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7425872 |
Radio frequency power amplifier |
Sep. 16, 2008 |
| 7423490 |
Wideband high frequency chokes |
Sep. 9, 2008 |
| 7411458 |
Method and apparatus for controlling an output voltage in a power amplifier |
Aug. 12, 2008 |
| 7391268 |
Power amplifying device comprising a stabilizing circuit |
Jun. 24, 2008 |
| 7391256 |
System and method for DC correction in wireless receivers |
Jun. 24, 2008 |
| 7355481 |
Amplification circuit and control method of amplification circuit |
Apr. 8, 2008 |
| 7352237 |
Radio frequency power amplifier and corresponding method |
Apr. 1, 2008 |
| 7260375 |
Frequency agile RF circuit |
Aug. 21, 2007 |
| 7245186 |
Bandpass amplifier |
Jul. 17, 2007 |
| 7202734 |
Electronically tuned power amplifier |
Apr. 10, 2007 |
| 7193477 |
Concurrent triple-band gain amplifier for multi-standard coexist communications |
Mar. 20, 2007 |
| 7161434 |
Amplifier |
Jan. 9, 2007 |
| 7138872 |
Power amplifier device |
Nov. 21, 2006 |
| 7126308 |
Interface circuit with power converter with interface circuit and electric vehicle with power converter |
Oct. 24, 2006 |
| 7102447 |
XO-buffer robust to interference |
Sep. 5, 2006 |
| 7042294 |
Power amplifier system |
May. 9, 2006 |
| 7038547 |
Amplifier circuit |
May. 2, 2006 |
| 7034620 |
RF power amplifier employing bias circuit topologies for minimization of RF amplifier memory effects |
Apr. 25, 2006 |
| 7019594 |
Method and apparatus for analyzing performance of a multi-stage radio frequency amplifier |
Mar. 28, 2006 |
| 6992545 |
GPS low noise amplifier unit, duplex filter unit and GPS-cellular hand-set |
Jan. 31, 2006 |
| 6982603 |
Radio-frequency power amplification circuit having stabilization circuit |
Jan. 3, 2006 |
| 6954106 |
FET band amplifier |
Oct. 11, 2005 |
| 6933780 |
Predistortion circuit and power amplifier |
Aug. 23, 2005 |
| 6924715 |
Band reject filters |
Aug. 2, 2005 |
| 6922108 |
Active balun circuit for single-ended to differential RF signal conversion with enhanced common-mode rejection |
Jul. 26, 2005 |
| 6920312 |
RF generating system with fast loop control |
Jul. 19, 2005 |
| 6906593 |
Frequency compensation of wide-band resistive gain amplifier |
Jun. 14, 2005 |
| 6903612 |
Tunable low noise amplifier |
Jun. 7, 2005 |
| 6895225 |
System for matching an antenna for a wireless communication device |
May. 17, 2005 |
| 6882222 |
Low pass filter for output of D-class amplifier |
Apr. 19, 2005 |
| 6859104 |
Tunable power amplifier matching circuit |
Feb. 22, 2005 |
| 6847258 |
Power amplifier, power amplifying method and radio communication apparatus |
Jan. 25, 2005 |
| 6831520 |
Amplifier circuit apparatus and method of EMI suppression |
Dec. 14, 2004 |
| 6812794 |
Multistage amplifier |
Nov. 2, 2004 |
| 6806767 |
Power amplifier with load switching circuit |
Oct. 19, 2004 |
| 6778020 |
High-frequency power amplifier |
Aug. 17, 2004 |
| 6765441 |
Differential amplifier |
Jul. 20, 2004 |
| 6759908 |
High frequency power amplifier |
Jul. 6, 2004 |
| 6753727 |
Sequential DC offset correction for amplifier chain |
Jun. 22, 2004 |
| 6710677 |
Band reject filters |
Mar. 23, 2004 |
| 6703682 |
High sheet MOS resistor method and apparatus |
Mar. 9, 2004 |
| 6674329 |
Distributed RF amplifier with filtered dummy load |
Jan. 6, 2004 |
| 6670801 |
Second harmonic tuning of an active RF device |
Dec. 30, 2003 |
| 6614311 |
Micro-wave power amplifier |
Sep. 2, 2003 |
| 6600373 |
Method and circuit for tuning a transconductance amplifier |
Jul. 29, 2003 |
| 6580327 |
Electronically controllable slope equalizer |
Jun. 17, 2003 |
| 6577199 |
Harmonic matching network for a saturated amplifier |
Jun. 10, 2003 |
| 6566956 |
High frequency power amplifier |
May. 20, 2003 |
| 6559718 |
Semiconductor integrated circuit device |
May. 6, 2003 |
| 6556080 |
Feedforward notch filter |
Apr. 29, 2003 |
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