Summary
Asia-Pacific Conference on Communications
2008
Session Number:15-PM2-E
Session:
Number:1569116115
Development of a High efficiency HF power amplifier
Masahiko Yamazoe, Kazuhisa Haeiwa, Shoji Hirose,
pp.-
Publication Date:2008/10/14
Online ISSN:2188-5079
DOI:10.34385/proc.27.1569116115
Summary:
This paper describes development of a High efficiency HF power amplifier. We fabricated a new wideband power amplifier operating at short wave band (3MHz-26MHz) using class-E amplifier and obtained a high output power efficiency of 74% at 25.5MHz that is a target performance by controlling the shunt capacity for wideband operation. In addition, the low loss characteristic of about 0.4dB and under and wideband characteristics was obtained by employing the balun using the transformer with coaxial cables and output circuit combiner tuned including stray capacitance and inductance.