Title :
Wideband class-E power amplifier covering the whole UHF broadcast band
Author :
Jiafeng Zhou ; Morris, Kirsten ; Watkins, Gavin ; Yamaguchi, Kazuhiro
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. of Bristol, Bristol, UK
Abstract :
Design and experimental results of a wideband and highly efficient class-E power amplifier are reported in this paper. The amplifier can cover the whole UHF broadcast band from 470MHz to 860MHz with an output power of 10W. The PA can achieve better than 70% power added efficiency (PAE) in a fractional bandwidth of 41% or better than 60% PAE in a bandwidth of 54% with 10W output power. To test the peak power capability, the PA has also been tested with pulsed CW signals and achieve up to 44dBm output power and 89% PAE when the drain supply voltage is fixed to be 30V.
Keywords :
UHF power amplifiers; broadcast communication; wideband amplifiers; PAE; UHF broadcast band; frequency 470 MHz to 860 MHz; power 10 W; power added efficiency; pulsed CW signals; voltage 30 V; wideband class-E power amplifier; Impedance; Load modeling; Power amplifiers; Power generation; Transistors; Wideband; Broadcast; Class-E; Matching Networks; PAE; PAPR; Power Amplifier; UHF; Wideband;
Conference_Titel :
Microwave Integrated Circuits Conference (EuMIC), 2013 European
Conference_Location :
Nuremberg
