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Class Information
Number: 330/275
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including push-pull amplifier > Having balanced to unbalanced circuitry and vice versa
Description: Subject matter wherein one of the signal input means or signal output means is coupled to or from the semiconductor amplifier by a balanced circuit, the other signal coupling means coupled to or from the semiconductor amplifier balanced circuit.










Patents under this class:

Patent Number Title Of Patent Date Issued
8031003 Solid-state RF power amplifier for radio transmitters Oct. 4, 2011
7683718 Solid-state RF power amplifier for radio transmitters Mar. 23, 2010
7643814 Reception arrangement with preamplifier circuit Jan. 5, 2010
7368990 Differential amplifier and data driver employing the differential amplifier May. 6, 2008
7368995 Power amplifier with active bias circuit May. 6, 2008
7233201 Single-ended pseudo-differential output driver Jun. 19, 2007
7199665 Single to dual non-overlapping converter Apr. 3, 2007
7107025 High gain, highly linear mixer Sep. 12, 2006
7088185 Antenna diversity structure for use in a radio frequency integrated circuit Aug. 8, 2006
6900705 Balanced high-frequency device and balance-characteristics improving method and balanced high-frequency circuit using the same May. 31, 2005
6891432 Apparatus, methods and articles of manufacture for electromagnetic processing May. 10, 2005
6882228 Radio frequency integrated circuit having an antenna diversity structure Apr. 19, 2005
6813486 RF circuit Nov. 2, 2004
6636116 Fully differential current feedback amplifier Oct. 21, 2003
5844443 Linear high-frequency amplifier with high input impedance and high power efficiency Dec. 1, 1998
5828269 High-frequency amplifier with high input impedance and high power efficiency Oct. 27, 1998
5781072 Dual push-pull amplifier circuit and method Jul. 14, 1998
5778303 Multiplexed audio-video signal transmission system through pair-wire Jul. 7, 1998
5684432 Amplifier output stage having enhanced drive capability Nov. 4, 1997
5420536 Linearized power amplifier May. 30, 1995
5382919 Wideband constant impedance amplifiers Jan. 17, 1995
5285170 Operational amplifier with all NPN transistor output stage Feb. 8, 1994
5243623 Switchable multi-mode transceiver interface device Sep. 7, 1993
5204880 Differential line driver employing predistortion Apr. 20, 1993
5107223 Phase inverter and push-pull amplifier using the same Apr. 21, 1992
5061910 Balun transformers Oct. 29, 1991
5057719 Passively forced current sharing among transistors Oct. 15, 1991
5053719 Wide-band push-pull amplifier Oct. 1, 1991
4994755 Active balun Feb. 19, 1991
4713838 Amplifier with double rail output Dec. 15, 1987
4705967 Multifunction floating FET circuit Nov. 10, 1987
4633191 Transformer isolated high voltage, high power amplifier system Dec. 30, 1986
4611178 Push-pull output circuit Sep. 9, 1986
4587494 Quasi-complementary class B IC output stage May. 6, 1986
4553073 Deflection control circuit with level conversion Nov. 12, 1985
4538116 Output stage for an operational amplifier Aug. 27, 1985
4453134 High voltage operational amplifier Jun. 5, 1984
4405902 Push-pull output stage Sep. 20, 1983
4355287 Bridge amplifiers employing complementary field-effect transistors Oct. 19, 1982
4318052 Wideband high voltage video amplifier Mar. 2, 1982
4283683 Audio bridge circuit Aug. 11, 1981
4254380 Bridge amplifier Mar. 3, 1981
4199731 Reversable electrically alterable amplifier configurations Apr. 22, 1980
4153883 Electrically alterable amplifier configurations May. 8, 1979
4058775 Over-current prevention circuitry for transistor amplifiers Nov. 15, 1977
4004240 Phase-splitter circuits Jan. 18, 1977











 
 
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