Title :
A 300-400MHz band high efficiency power amplifier with intrinsic harmonics termination for SDR
Author :
Mukai, Noriyuki ; Arai, Hiroyuki ; Yamauchi, Kazuhisa
Author_Institution :
Yokohama Nat. Univ., Yokohama
Abstract :
A 300-400MHz band 2-stage amplifier with power add efficiency of 59% and output power of 23 dBm has been developed. To obtain a high efficiency in the band width, we have terminated second harmonic and third harmonic source impedance optimally as well as load impedance. We have designed the source harmonics termination has a parallel resonant circuit comprised of lumped element, and load harmonics termination without quarter-wavelength or eighth-wavelength impedance transformer.
Keywords :
UHF power amplifiers; harmonic generation; software radio; frequency 300 MHz to 400 MHz; high efficiency power amplifier; impedance transformer; intrinsic harmonics termination; lumped element; parallel resonant circuit; second harmonic source impedance; third harmonic source impedance; two-stage amplifier; Circuit simulation; Circuit synthesis; Frequency estimation; High power amplifiers; Impedance; Power amplifiers; Power generation; Power system harmonics; Radiofrequency amplifiers; VHF circuits;
Conference_Titel :
Microwave Conference, 2007. KJMW 2007. Korea-Japan
Conference_Location :
Okinawa
Print_ISBN :
978-1-4244-1556-4
DOI :
10.1109/KJMW.2007.4402226
