Methods and Circuits for Detuning a Filter and Matching Network at the Output of a Power Amplifier
作者： Ying Shi , Malcolm Smith
DOI:
关键词: Engineering 、 Port (circuit theory) 、 Electronic circuit 、 Crossover 、 Filter (video) 、 Transmitter 、 Antenna (radio) 、 Amplifier 、 Electronic engineering 、 Limit (music)
摘要: In transmitter modules or power amplifier (PA) there is at least a possible path for second and even third harmonic of low band to crossover unfiltered into the high reach antenna hence cross isolation necessary. Forward necessary in order limit input crossing over PAs port. According methods circuits such forward improved by detuning filter matching network output PA. The circuit comprises trap frequencies thereby reducing impacts isolation.
lens.org 参考文章(80)
Steven J. Gunderson, Output following intermediate cascode circuit ,(1982)
Burton R. Tunzi, Albert G. Nilssen, Dual tone multiple frequency receiver/decoder ,(1974)
Gerald R. Stanley, Circulating current sensing device for amplifiers ,(2002)
Mitsugo Ohiwa, Hajime Ohta, Nobuo Fukumoto, Teruyoshi Matsui, Audio power amplifier ,(1976)
Onno Marcel Kuijken, RF power sensing circuit ,(2005)
Jeremy D. Dunworth, Marco Cassia, Switches with bias resistors for even voltage distribution ,(2010)
Bernhard Strzalkowski, Switching converter systems with isolating digital feedback loops ,(2010)
D. Robert Hoover, High voltage, high current, and high accuracy amplifier ,(2006)
Peter F. Chu, EER modulator with power amplifier having feedback loop providing soft output impedance ,(2003)
Joseph Petrosky, Michael Hargrove, Technique to reduce ESD loading capacitance ,(2003)