Title :
High efficiency class-F power amplifier design
Author :
Ooi, Shirt Fun ; Gao, Steven ; Sambell, A. ; Smith, D. ; Butterworth, P.
Author_Institution :
Dept. of Eng. & Technol., Northumbria Univ., Newcastle upon Tyne, UK
Abstract :
In this paper, a high efficiency, low voltage, class-F power amplifier (PA) is described. The effect of different output harmonic terminations on the power-added efficiency (PAE) of the PA has also been analysed. A medium power PHEMT PA, operating at 900 MHz, is designed and measured. A peak PAE of 71.4% with 22 dBm output power (Pout) and 14 dB power gain (Gp) is achieved at a very low drain voltage (Vds) of 3 V. A PAE above 60% has been achieved over a bandwidth of 13%.
Keywords :
HEMT circuits; UHF power amplifiers; circuit tuning; low-power electronics; 14 dB; 3 V; 60 percent; 71.4 percent; 900 MHz; PAE; class-F power amplifier; high efficiency amplifier; low drain voltage operation; low voltage PA; medium power PHEMT PA; output harmonic termination; output harmonic tuning; power-added efficiency; Bandwidth; Gain; Harmonic analysis; High power amplifiers; Low voltage; PHEMTs; Power amplifiers; Power generation; Power measurement; Power system harmonics;
Conference_Titel :
High Frequency Postgraduate Student Colloquium, 2004
Print_ISBN :
0-7803-8426-1
DOI :
10.1109/HFPSC.2004.1360365
