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Class Information
Number: 330/276
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including push-pull amplifier > Having transformer
Description: Subject matter wherein a transformer is included in the circuit.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7432793 |
Amplifier output filter having planar inductor |
Oct. 7, 2008 |
| 7425869 |
Distributed circular geometry power amplifier architecture |
Sep. 16, 2008 |
| 7372336 |
Small-sized on-chip CMOS power amplifier having improved efficiency |
May. 13, 2008 |
| 7358815 |
Monolithic transformer based amplifier for integrated circuits |
Apr. 15, 2008 |
| 7330076 |
Reconfigurable distributed active transformers |
Feb. 12, 2008 |
| 7321752 |
Linear amplification arrangement with non-linear amplifier element for a mobile radio device |
Jan. 22, 2008 |
| 7301400 |
Multi-phase switching power supply for mobile telephone applications |
Nov. 27, 2007 |
| 7260377 |
Variable-gain low noise amplifier for digital terrestrial applications |
Aug. 21, 2007 |
| 7230488 |
Amplifying circuit, noise reducing apparatus and power converting apparatus |
Jun. 12, 2007 |
| 7173488 |
Vacuum tube power amplifier switchable between push-pull and single ended configurations |
Feb. 6, 2007 |
| 7119619 |
Reconfigurable distributed active transformers |
Oct. 10, 2006 |
| 7075371 |
Distributed circular geometry power amplifier architecture |
Jul. 11, 2006 |
| 7053713 |
Multi-phase switching power supply having both voltage and current feedback loops |
May. 30, 2006 |
| 7053714 |
Methods and apparatus for switching between class A and A/B operation in a power amplifier |
May. 30, 2006 |
| 6856199 |
Reconfigurable distributed active transformers |
Feb. 15, 2005 |
| 6816012 |
Distributed circular geometry power amplifier architecture |
Nov. 9, 2004 |
| 6791734 |
Method and apparatus for information modulation for impulse radios |
Sep. 14, 2004 |
| 6586999 |
Ultra wideband transmitter with gated push-pull RF amplifier |
Jul. 1, 2003 |
| 6538510 |
High efficiency, current sink only line driver |
Mar. 25, 2003 |
| 6496069 |
Cascode circuit capable of contributing a comparatively low intermodulation distortion in the amplified signals |
Dec. 17, 2002 |
| 6424227 |
Monolithic balanced RF power amplifier |
Jul. 23, 2002 |
| 6414550 |
CMOS linear amplifier formed with nonlinear transistors |
Jul. 2, 2002 |
| 6359513 |
CMOS power amplifier with reduced harmonics and improved efficiency |
Mar. 19, 2002 |
| 6323733 |
High efficiency dual supply power amplifier |
Nov. 27, 2001 |
| 6313705 |
Bias network for high efficiency RF linear power amplifier |
Nov. 6, 2001 |
| 6275108 |
Circuit and method for control of amplifier operating angle |
Aug. 14, 2001 |
| 6229396 |
Controlled impedance transformer line driver |
May. 8, 2001 |
| 6157258 |
High frequency power amplifier |
Dec. 5, 2000 |
| 6111465 |
Amplifying unit comprising an input transformer capable of contributing to a wider frequency band of a broadband amplifier |
Aug. 29, 2000 |
| 6107885 |
Wideband linear GaAsFET ternate cascode amplifier |
Aug. 22, 2000 |
| 6046641 |
Parallel HV MOSFET high power stable amplifier |
Apr. 4, 2000 |
| 5867061 |
Transformer coupled stacked power amplifier |
Feb. 2, 1999 |
| 5838196 |
Transformer-coupled amplifier |
Nov. 17, 1998 |
| 5781071 |
Transformers and amplifiers |
Jul. 14, 1998 |
| 5781072 |
Dual push-pull amplifier circuit and method |
Jul. 14, 1998 |
| 5751555 |
Electronic component having reduced capacitance |
May. 12, 1998 |
| 5742205 |
Field effect transistor cable television line amplifier |
Apr. 21, 1998 |
| 5731740 |
Circuit bias via transformer |
Mar. 24, 1998 |
| 5726603 |
Linear RF power amplifier |
Mar. 10, 1998 |
| 5652546 |
AM-FM transmitter power amplifier using class-BC |
Jul. 29, 1997 |
| 5623231 |
Push-pull power amplifier |
Apr. 22, 1997 |
| 5614863 |
Method and system for increasing the power efficiency of a balanced amplifier/antenna combination |
Mar. 25, 1997 |
| 5570062 |
AM-FM transmitter power amplifier using class-BC |
Oct. 29, 1996 |
| 5539833 |
Audio signal amplifier device |
Jul. 23, 1996 |
| 5420537 |
High power solid state R.F. amplifier |
May. 30, 1995 |
| 5235288 |
Amplifier stage for low-resistance AC voltage sources |
Aug. 10, 1993 |
| 5164679 |
AC power amplifier having current limit control |
Nov. 17, 1992 |
| 5142239 |
High frequency linear amplifier assembly |
Aug. 25, 1992 |
| 5077756 |
Data network line driver |
Dec. 31, 1991 |
| 4994760 |
Apparatus and method for combining output signals from parallelly coupled power field effect transistors in high frequency amplifiers |
Feb. 19, 1991 |
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