Title :
Linearization of harmonic controlled high efficiency power amplifier
Author :
Kinoshita, Y. ; Sekine, K. ; Dooi, Y. ; Iso, A. ; Takikawa, K. ; Katsueda, M. ; Funaki, Hideyuki
Author_Institution :
Space Commun. Res. Corp., Tokyo, Japan
Abstract :
Linearization of harmonic controlled amplifiers (HCA) which have a theoretical power efficiency limit of 100% has been analyzed for mobile communication satellites. The analysis shows that the power transistor used for HCA requires more precise linearity than for a conventional class-A amplifier. An experiment using a UHF 70 W amplifier has shown a weight reduction ratio of one third for satellites
Keywords :
linearisation techniques; mobile radio systems; power amplifiers; radiofrequency amplifiers; satellite relay systems; 70 W; UHF; harmonic controlled amplifier linearisation; high efficiency power amplifier; mobile communication satellites; power transistor; weight reduction ratio; Artificial satellites; Circuits; Communication system control; FETs; Harmonic analysis; High power amplifiers; Mobile communication; Power system harmonics; Transponders; Voltage;
Conference_Titel :
Vehicular Technology Conference, 1991. Gateway to the Future Technology in Motion., 41st IEEE
Conference_Location :
St. Louis, MO
Print_ISBN :
0-87942-582-2
DOI :
10.1109/VETEC.1991.140528
