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Class Information
Number: 330/53
Name: Amplifiers > With distributed parameter-type coupling means
Description: Subject matter wherein the signal energy is coupled to or from the amplifying device by means including distributed parameter wave transmission means; or circuit networks of lumped parameters or impedances designed to simulate the impedance characteristics of distributed parameter wave transmission means.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7570187 |
Technique for improving modulation performance of translational loop RF transmitters |
Aug. 4, 2009 |
| 7545211 |
Predistortion linearization device with adjustable amplitude and shape |
Jun. 9, 2009 |
| 7521995 |
Inverted doherty amplifier with increased off-state impedence |
Apr. 21, 2009 |
| 7512387 |
Method and control system for controlling the output power of an RF amplifier system |
Mar. 31, 2009 |
| 7489197 |
Coupling net and MMIC amplifier |
Feb. 10, 2009 |
| 7474156 |
Impedance transformer for amplifier and amplifier including the same |
Jan. 6, 2009 |
| 7436260 |
Controlling the ratio of amplification factors between linear amplifiers |
Oct. 14, 2008 |
| 7362171 |
High-frequency amplifier |
Apr. 22, 2008 |
| 7362170 |
High gain, high efficiency power amplifier |
Apr. 22, 2008 |
| 7315206 |
Travelling-wave amplifier |
Jan. 1, 2008 |
| 7301395 |
Doherty amplifier |
Nov. 27, 2007 |
| 7263334 |
Directional coupler for use in VCO unequal power splitting |
Aug. 28, 2007 |
| 7254374 |
Switchable multi-transmitter combiner and method |
Aug. 7, 2007 |
| 7221221 |
Power amplifier with pre-distorter |
May. 22, 2007 |
| 7183843 |
Electronically tuned power amplifier |
Feb. 27, 2007 |
| 7161425 |
Radio frequency power amplifier for lossless power combining |
Jan. 9, 2007 |
| 7138861 |
Load mismatch adaptation in coupler-based amplifiers |
Nov. 21, 2006 |
| 7126417 |
Distributed gain network |
Oct. 24, 2006 |
| 7081785 |
Comparing circuit and offset compensating apparatus |
Jul. 25, 2006 |
| 7078976 |
High power Doherty amplifier |
Jul. 18, 2006 |
| 7064606 |
High efficiency amplifier and method of designing same |
Jun. 20, 2006 |
| 6940347 |
Amplifier |
Sep. 6, 2005 |
| 6930556 |
Active-loop, spatially-combined amplifier |
Aug. 16, 2005 |
| 6922102 |
High efficiency amplifier |
Jul. 26, 2005 |
| 6909322 |
Stage of a power generator of high frequency current |
Jun. 21, 2005 |
| 6894562 |
High-frequency amplifier, feed-forward amplifier and distortion compensating amplifier |
May. 17, 2005 |
| 6864742 |
Application of the doherty amplifier as a predistortion circuit for linearizing microwave amplifiers |
Mar. 8, 2005 |
| 6847258 |
Power amplifier, power amplifying method and radio communication apparatus |
Jan. 25, 2005 |
| 6794953 |
Radio frequency amplifying circuit |
Sep. 21, 2004 |
| 6747511 |
Distributed amplifier with pi-configuration analysis and synthesis lines |
Jun. 8, 2004 |
| 6737921 |
Distributed amplifier and differential distributed amplifier |
May. 18, 2004 |
| 6680647 |
Low noise amplifier circuit with phase matched switch topology |
Jan. 20, 2004 |
| 6667657 |
RF variable gain amplifying device |
Dec. 23, 2003 |
| 6661284 |
Method and apparatus for error compensation in a hybrid matrix amplification system |
Dec. 9, 2003 |
| 6646504 |
Broadband amplifier system having improved linearity and minimum loss |
Nov. 11, 2003 |
| 6639463 |
Adaptive power amplifier system and method |
Oct. 28, 2003 |
| 6617929 |
Full output matching apparatus of a microwave doherty amplifier |
Sep. 9, 2003 |
| 6597231 |
Semiconductor switching circuit and semiconductor device using same |
Jul. 22, 2003 |
| 6573792 |
Feedforward amplifier |
Jun. 3, 2003 |
| 6570445 |
Linearizer for microwave amplifier |
May. 27, 2003 |
| 6567327 |
Driving circuit, charge/discharge circuit and the like |
May. 20, 2003 |
| 6552634 |
Wideband, minimum-rating filters and multicouplers for power amplifiers |
Apr. 22, 2003 |
| 6542035 |
Modular high power solid state amplifier |
Apr. 1, 2003 |
| 6522196 |
System and method for improving input return loss in RF amplifiers |
Feb. 18, 2003 |
| 6518844 |
Suspended transmission line with embedded amplifier |
Feb. 11, 2003 |
| 6469581 |
HEMT-HBT doherty microwave amplifier |
Oct. 22, 2002 |
| 6437642 |
Multiport amplifier with a number of amplifier elements other than 2 |
Aug. 20, 2002 |
| 6424219 |
Operational amplifier |
Jul. 23, 2002 |
| 6388540 |
Distributed constant circuit in an amplifier |
May. 14, 2002 |
| 6362685 |
Power amplifier with multilevel power modes |
Mar. 26, 2002 |
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