volume | PIER Journals

Abstract

This paper presents the design of a continuous polyharmonic-tuned mode (CPHTM) power amplifier (PA) with an introduced optimal knee voltage waveform control parameter in a continuous harmonic-tuned voltage waveform equation. The optimal knee voltage waveform control parameter works in unison with derived equations, providing bandwidth and efficiency potentials over the limiting factors of the conventional harmonic-tuned power amplifiers (PAs). The effectiveness of the design strategy is proven by the realisation of a CPHTM type-I (CPHTMT-I) PA as compared with a non-continuous polyharmonic-tuned mode type-II (NCPHTMT-II) PA. Test results with continuous-wave (CW) signals show drain efficiency (DE) levels within 53.6%-79% (1.31-2.39 GHz) with 58.4% fractional bandwidth for CPHTMT-I and 64%-78% (1.65-1.95 GHz) with 16.7% fractional bandwidth for NCPHTMT-II. The CW result evidently shows the validation and efficacy of the proposed theory.

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Mr. Gideon Naah

Dr. Songbai He

Dr. Weimin Shi