TY - GEN
T1 - A balanced power amplifier utilizing the reflected input power
AU - Lim, Jongsik
AU - Park, Chunseon
AU - Koo, Jakyung
AU - Cha, Hyeonwon
AU - Jeong, Yongchae
AU - Han, Sang Min
AU - Ahn, Dal
PY - 2009
Y1 - 2009
N2 - A new balanced power amplifier utilizing the reflected input is described. In general, the single-ended amplifier section in balanced amplifiers is not matched perfectly, so the reflected input power is terminated conventionally at the isolation port of branch line hybrid coupler. However in this work, the reflected power is injected into the auxiliary amplifier, and its output power is combined to the output power of balanced amplifier. Therefore final output power, power gain, and efficiency performances of the proposed balanced amplifier are highly improved compared to the conventional balanced amplifier. For the verification of the proposed balanced amplifier, a conventional balanced amplifier and the proposed balanced amplifier are fabricated and measured, and the measured results are compared. The proposed balanced amplifier shows an improvement in terms of output power(Pout), power gain, and power added efficiency (PAE) by 2.9 dB, 2.3 dB, and 7 %, respectively.
AB - A new balanced power amplifier utilizing the reflected input is described. In general, the single-ended amplifier section in balanced amplifiers is not matched perfectly, so the reflected input power is terminated conventionally at the isolation port of branch line hybrid coupler. However in this work, the reflected power is injected into the auxiliary amplifier, and its output power is combined to the output power of balanced amplifier. Therefore final output power, power gain, and efficiency performances of the proposed balanced amplifier are highly improved compared to the conventional balanced amplifier. For the verification of the proposed balanced amplifier, a conventional balanced amplifier and the proposed balanced amplifier are fabricated and measured, and the measured results are compared. The proposed balanced amplifier shows an improvement in terms of output power(Pout), power gain, and power added efficiency (PAE) by 2.9 dB, 2.3 dB, and 7 %, respectively.
KW - Auxiliary amplifiers
KW - Balanced amplifiers
KW - Branch line hybrid coupler
KW - Power amplifiers
UR - https://www.scopus.com/pages/publications/77951441338
U2 - 10.1109/RFIT.2009.5383733
DO - 10.1109/RFIT.2009.5383733
M3 - Conference paper
AN - SCOPUS:77951441338
SN - 9781424450312
T3 - 2009 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2009
SP - 88
EP - 91
BT - 2009 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2009
T2 - 2009 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2009
Y2 - 9 January 2009 through 11 January 2009
ER -