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Class Information
Number: 330/302
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including frequency-responsive means in the signal transmission path
Description: Subject matter including frequency-responsive means in the signal transmission path that causes corresponding changes in the amplifier gain.










Sub-classes under this class:

Class Number Class Name Patents
330/306 And bandpass, broadband (e.g., wideband) or sidepass means 358
330/304 And equalizing means 114
330/305 And tuning means 261
330/303 Including an active device in the filter means 127


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
8704600 Power amplifier Apr. 22, 2014
8686796 RF power amplifiers with improved efficiency and output power Apr. 1, 2014
8659359 RF power transistor circuit Feb. 25, 2014
8659357 Conditionally-stable operational amplifier with tunable wideband buffers Feb. 25, 2014
8653889 Doherty amplifier having compact output matching and combining networks Feb. 18, 2014
8653896 Class-AB power amplifier Feb. 18, 2014
8649738 High-frequency amplifier and radio communication apparatus Feb. 11, 2014
8643438 Class-AB power amplifier Feb. 4, 2014
8638171 Radiofrequency amplifier Jan. 28, 2014
8638249 System and method for high input capacitive signal amplifier Jan. 28, 2014
8629724 Power amplifier Jan. 14, 2014
8624676 Broadband transistor bias network Jan. 7, 2014
8626084 Area efficient concurrent matching transceiver Jan. 7, 2014
8614601 Power amplifier and operating method thereof Dec. 24, 2013
8610506 Amplifier circuit Dec. 17, 2013
8604883 Class-C power amplifier Dec. 10, 2013
8598951 Linear multi-mode power amplifier for dynamic supply operation Dec. 3, 2013
8593225 Hybrid class amplifier Nov. 26, 2013
8593219 Method and apparatus for amplifying a radio frequency signal Nov. 26, 2013
8587373 Power amplifier Nov. 19, 2013
8587379 Power amplifier with stabilising network Nov. 19, 2013
8576004 Metamaterial power amplifier systems Nov. 5, 2013
8576013 Power distortion-based servo control systems for frequency tuning RF power sources Nov. 5, 2013
8564371 Amplification circuit Oct. 22, 2013
8564373 Broadband power amplifier Oct. 22, 2013
8558622 Radio frequency power amplifier Oct. 15, 2013
8536950 Multi-stage impedance matching Sep. 17, 2013
8536943 Selective narrowband feedback for a digital predistorter Sep. 17, 2013
8531241 System and method for process, voltage, temperature (PVT) stable differential amplifier transfer function Sep. 10, 2013
8519795 High frequency power amplifier Aug. 27, 2013
8508296 Tunable directional power combiner Aug. 13, 2013
8508299 High-frequency power amplifier Aug. 13, 2013
8502608 Tunable power amplifier using laminate MEMS capacitors Aug. 6, 2013
8493153 Narrowband amplifier with improved interference suppression Jul. 23, 2013
8487699 Inductive-element feedback-loop compensator Jul. 16, 2013
8466745 Hybrid reconfigurable multi-bands multi-modes power amplifier module Jun. 18, 2013
8466747 Integrated-circuit amplifier with low temperature rise Jun. 18, 2013
8461921 Amplifier module with multiple operating modes Jun. 11, 2013
8456239 Amplifying unit, power amplifier and transmitter Jun. 4, 2013
8447259 Mode-switching low-noise amplifier and wide-band RF receiver May. 21, 2013
8446218 Power amplifier and transmitter May. 21, 2013
8436684 Apparatus and method for low noise amplification May. 7, 2013
8427239 Apparatus and method for low noise amplification Apr. 23, 2013
8427355 Time-interleaved pipelined-SAR analog to digital converter with low power consumption Apr. 23, 2013
8421532 Metamaterial power amplifier systems Apr. 16, 2013
8416023 System and method for compensating for changes in an output impedance of a power amplifier Apr. 9, 2013
8416024 Impedance matching arrangement for amplifier having split shunt capacitor and amplifier including the same Apr. 9, 2013
8390492 Signal processing apparatus Mar. 5, 2013
8384474 Bi-directional and adjustable current source Feb. 26, 2013
8384484 Power amplifier with improved bandwidth Feb. 26, 2013

1 2 3 4 5 6 7 8 9 10 11 12 13 14










 
 
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