Title :
High-efficiency low-IM microwave PA design
Author :
Colantonio, P. ; Giannini, F. ; Leuzzi, G. ; Limiti, E.
Author_Institution :
Dept. of Electron. Eng., Rome Univ., Italy
Abstract :
Harmonic terminations effects in microwave power amplifiers on its power and linearity performances are discussed. By a simplified theoretical approach, useful guidelines are inferred to obtain both high efficiency and low intermodulation. The concepts discussed are experimentally validated showing the performances of four hybrid amplifiers, designed using different harmonic manipulation strategies. In particular, using a proper input second harmonic output termination, an improvement both in power added efficiency and intermodulation can be obtained.
Keywords :
harmonics; intermodulation; microwave power amplifiers; harmonic manipulation strategies; harmonic terminations effects; high-efficiency power amplifiers; hybrid amplifiers; input second harmonic output termination; linearity performance; low intermodulation; low-IM power amplifier design; microwave power amplifier design; power added efficiency; power performance; Guidelines; Linearity; Microwave amplifiers; Performance analysis; Power amplifiers; Power engineering and energy; Power generation; Power harmonic filters; Power system harmonics; Signal generators;
Conference_Titel :
Microwave Symposium Digest, 2001 IEEE MTT-S International
Conference_Location :
Phoenix, AZ, USA
Print_ISBN :
0-7803-6538-0
DOI :
10.1109/MWSYM.2001.966943
