Title :
10W ultra-broadband power amplifier
Author :
Ezzeddine, Amin K. ; Huang, Ho C.
Author_Institution :
AMCOM Communications, Inc., USA
Abstract :
We report the design and performance of an ultra-broadband power amplifier. It achieves 10 Watts output power with 21 dB plusmn 1.5 dB gain from 20 MHz to 3000 MHz. At lower frequencies from 20 to 1000 MHz the output power is 15 Watts with 22% efficiency. To achieve this performance, we employ a new design concept to control the device impedance and the power combiner impedance to be naturally 50 Ohms, such that no impedance matching is needed. Also, we developed a broadband microwave balun as a push-pull power combiner, which doubles as an impedance transformer. We believe the combination of output power, bandwidth and efficiency is the best reported to date.
Keywords :
MMIC power amplifiers; wideband amplifiers; broadband microwave balun; frequency 20 MHz to 300 MHz; impedance transformer; ultra-broadband power amplifier; Broadband amplifiers; Frequency; Gallium arsenide; Impedance matching; MMICs; Microwave devices; Power amplifiers; Power combiners; Power generation; Radiofrequency amplifiers; HIFET amplifiers; Power amplifiers; broadband amplifiers; broadband balun; power combiners;
Conference_Titel :
Microwave Symposium Digest, 2008 IEEE MTT-S International
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1780-3
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2008.4632914