Third-octave power amplifier using ring based matching network with high efficiency
A power amplifier (PA) output matching network (OMN) based on the ring structure network is proposed to design multi-octave wide band PA. The characteristics of ring structure and micro-strip are analysed. For verification, validate the proposed structure, a multi-octave wide band PA operating ranges 0.5−4.4 GHz over three octaves is fabricated and measured, with the minimum power added efficiency over 48%, output power (Pout) over about 40 dBm and 9.5−11.5 dB power gain are achieved during the operating frequency band. Comparison with reported over octave PAs are given.