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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
8373508 Power amplifier Feb. 12, 2013
8354888 Power amplifier Jan. 15, 2013
8354885 Operational amplifier Jan. 15, 2013
8354882 Doherty amplifier with input network optimized for MMIC Jan. 15, 2013
8351882 Amplifying a transmit signal using a fractional power amplifier Jan. 8, 2013
8350627 Hybrid class amplifier Jan. 8, 2013
8344808 Non-linear capacitance compensation Jan. 1, 2013
8344809 System and method for adjusting gain frequency response of RF power amplifier Jan. 1, 2013
8339198 Negative capacitance synthesis for use with differential circuits Dec. 25, 2012
8330551 Dual band high frequency amplifier using composite right/left handed transmission line Dec. 11, 2012
8330536 Differential reference interface with low noise offset cancellation Dec. 11, 2012
8324964 High efficiency multiple power mode linear radio frequency power amplifier Dec. 4, 2012
8324973 Low output impedance RF amplifier Dec. 4, 2012
8319550 Switched-capacitor programmable-gain amplifier Nov. 27, 2012
8319562 System and method for amplifying a signal using multiple amplification stages sharing a common bias current Nov. 27, 2012
8314659 Controlling amplifier input impedance Nov. 20, 2012
8305139 Methods and apparatuses for high power and/or high frequency devices Nov. 6, 2012
8299857 RF power amplifier including broadband input matching network Oct. 30, 2012
8299856 Power transistor output match network with high Q RF path and low Q low frequency path Oct. 30, 2012
8279013 Power amplifier and MMIC using the same Oct. 2, 2012
8270846 Amplification circuit, differential amplification circuit, and optical transmitter Sep. 18, 2012
8264282 Amplifier Sep. 11, 2012
8264279 Electronic circuit Sep. 11, 2012
8258864 Ultra low voltage multi-stage high-speed CMOS comparator with autozeroing Sep. 4, 2012
8253496 Linear RF power amplifier with frequency-selectable impedance matching Aug. 28, 2012
8253494 Doherty amplifier with composed transfer characteristic having multiple peak amplifiers Aug. 28, 2012
8253486 Wireless apparatus having shielding function Aug. 28, 2012
8242841 Receiver having multi-stage low noise amplifier Aug. 14, 2012
8228120 Negative capacitance synthesis for use with differential circuits Jul. 24, 2012
8217719 Variable gain RF amplifier Jul. 10, 2012
8217735 Harmonic suppression device Jul. 10, 2012
8207790 High frequency power amplifier Jun. 26, 2012
8203385 Input stage for an amplifier Jun. 19, 2012
8203386 Reconfigurable outphasing Chireix amplifiers and methods Jun. 19, 2012
8193857 Wideband doherty amplifier circuit Jun. 5, 2012
8174323 High frequency amplifier May. 8, 2012
8174322 Power control of reconfigurable outphasing chireix amplifiers and methods May. 8, 2012
8170505 Driver amplifier having a programmable output impedance adjustment circuit May. 1, 2012
8160275 Apparatus and method for an integrated, multi-mode, multi-band, and multi-stage power amplifier Apr. 17, 2012
8160518 Multi-mode transceiver having tunable harmonic termination circuit and method therefor Apr. 17, 2012
8154340 Metamaterial power amplifier systems Apr. 10, 2012
8154348 Amplifier circuit Apr. 10, 2012
8149062 Power amplifier circuitry having inductive networks Apr. 3, 2012
8149060 Low distortion amplifier and Doherty amplifier using low distortion amplifier Apr. 3, 2012
8149050 Cascaded amplifiers with transformer-based bypass mode Apr. 3, 2012
8149049 Low noise receiving apparatus Apr. 3, 2012
8143951 Broadband transistor bias network Mar. 27, 2012
8134409 Radio frequency power amplifier Mar. 13, 2012
8135357 Integrated transmitter/receiver switch with impedance matching network Mar. 13, 2012
8130043 Multi-stage power amplifier with enhanced efficiency Mar. 6, 2012

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










 
 
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