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Class Information
Number: 330/305
Name: Amplifiers > With semiconductor amplifying device (e.g., transistor) > Including frequency-responsive means in the signal transmission path > And tuning means
Description: Subject matter including a manually adjustable frequency selecting means.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8629725 Power amplifier having a nonlinear output capacitance equalization Jan. 14, 2014
8604883 Class-C power amplifier Dec. 10, 2013
8593219 Method and apparatus for amplifying a radio frequency signal Nov. 26, 2013
8593225 Hybrid class amplifier Nov. 26, 2013
8576010 Apparatus and method for a switched capacitor architecture for multi-band doherty power amplifiers Nov. 5, 2013
8576013 Power distortion-based servo control systems for frequency tuning RF power sources Nov. 5, 2013
8564373 Broadband power amplifier Oct. 22, 2013
8502608 Tunable power amplifier using laminate MEMS capacitors Aug. 6, 2013
8493149 Amplifier circuit with variable tuning precision Jul. 23, 2013
8422698 Signal processing apparatus and method, and program Apr. 16, 2013
8378750 Class AB amplifiers Feb. 19, 2013
8380153 Radio front end and applications thereof Feb. 19, 2013
8358172 Peaking circuit, method for adjusting peaking circuit, differential amplifier installing peaking circuit, laser diode driving circuit installing peaking circuit, and data processing unit insta Jan. 22, 2013
8344810 CMOS amplifier with integrated tunable band-pass function Jan. 1, 2013
8319549 Self-healing power amplifier: methods and apparatus Nov. 27, 2012
8306494 Method and system for a single-ended input low noise amplifier with differential output Nov. 6, 2012
8294514 Calibrate output matching for correct output power Oct. 23, 2012
8270926 Radio front end and applications thereof Sep. 18, 2012
8244195 Low noise amplifier Aug. 14, 2012
8217723 Low noise amplifier circuit Jul. 10, 2012
8212615 Variable-gain amplifier circuit and wireless communication device integrated circuit equipped therewith Jul. 3, 2012
8164387 Simultaneous harmonic termination in a push-pull power amplifier Apr. 24, 2012
8160275 Apparatus and method for an integrated, multi-mode, multi-band, and multi-stage power amplifier Apr. 17, 2012
8115554 Semiconductor device Feb. 14, 2012
8111098 Segmented linear FM power amplifier Feb. 7, 2012
8098101 Method of achieving high selectivity in receiver RF front-ends Jan. 17, 2012
8093954 High-frequency input circuit Jan. 10, 2012
8081032 Broadband LNA with filter Dec. 20, 2011
8073419 Coherent tunable filter apparatus and wireless communication front-end circuit thereof Dec. 6, 2011
8049566 Feedback LNA with resistor Nov. 1, 2011
8036402 Distortion compensation Oct. 11, 2011
8022766 CMOS power amplifiers having integrated one-time programmable (OTP) memories Sep. 20, 2011
8022769 Semiconductor device Sep. 20, 2011
8018290 Oscillator, transmitter-receiver and frequency synthesizer Sep. 13, 2011
8008973 Amplifier for amplifying a high-frequency signal Aug. 30, 2011
7973604 Tunable multi frequency bands filter device Jul. 5, 2011
7961051 Enhanced low noise amplifier Jun. 14, 2011
7956683 High efficiency linear power amplifiers with load compensation Jun. 7, 2011
7948312 Multi-bit class-D power amplifier system May. 24, 2011
7944305 RF pre-amplifiers and power amplifiers May. 17, 2011
7924098 High frequency amplifier circuit and mobile communication terminal using the same Apr. 12, 2011
7920022 Switched capacitor system with and method for output glitch reduction Apr. 5, 2011
7917117 Auto-tuning amplifier Mar. 29, 2011
7911277 Adaptively tuned RF power amplifier Mar. 22, 2011
7885629 Circuit with Q-enhancement cell having programmable bias current slope Feb. 8, 2011
7868700 Method and apparatus for reducing current consumption of MIMO systems Jan. 11, 2011
7834690 Broadband low noise amplifier Nov. 16, 2010
7834704 Low-noise amplifier circuit and receiving system Nov. 16, 2010
7816990 Variable gain amplification circuit Oct. 19, 2010
7764124 Broadband low noise amplifier Jul. 27, 2010

1 2 3 4 5 6










 
 
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