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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:

Class Number Class Name Patents
330/57 Artificial line 3
330/54 Distributed amplifier 133
330/55 Push-pull 19
330/56 Waveguide, cavity, or concentric line resonator 77

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8704592 Traveling wave amplifier with pre-emphasis function Apr. 22, 2014
8629718 Signal splitting apparatus suitable for use in a power amplifier Jan. 14, 2014
8427231 Amplifying device and amplifying method Apr. 23, 2013
8354882 Doherty amplifier with input network optimized for MMIC Jan. 15, 2013
8324965 Final stage three-way power combining amplifying circuit applied to power amplifier of mobile communications base station system Dec. 4, 2012
8115546 Apparatus and method for maximizing performance of peaking amplifier in doherty amplifier Feb. 14, 2012
8004371 Band reject filters Aug. 23, 2011
7932781 Multi-planar solid state amplifier Apr. 26, 2011
7884668 Integrated doherty type amplifier arrangement with high power efficiency Feb. 8, 2011
7843270 Low noise amplifier circuit with noise cancellation and increased gain Nov. 30, 2010
7804358 Device with shared power amplifiers, for use in a wireless telecommunications system Sep. 28, 2010
7755430 Splitter circuit Jul. 13, 2010
7746175 Solid state RF power amplifier Jun. 29, 2010
7737786 Broadband reciprocal active balun structure Jun. 15, 2010
7667538 Differential amplifier, data driver and display Feb. 23, 2010
7639083 Compensation for parasitic coupling between RF or microwave transistors in the same package Dec. 29, 2009
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

1 2 3 4

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