Title :
High efficiency power amplifier design using a simplified approach
Author :
Ng, T.H. ; Ooi, B.-L. ; Leong, M.S. ; Ma, J.Y. ; Ong, H.S. ; Chew, S.T.
Author_Institution :
Nat. Univ. of Singapore, Singapore
Abstract :
A high efficiency power amplifier is implemented using a simplified design method. The approach utilizes small signal S-parameter data only. A high efficiency power amplifier with a maximum power added efficiency of 68.8 %, a nominal power gain of 8.6 dB and 21 dBm output power at 7.5 GHz was implemented. The high efficiency performance is obtained from proper selection of the second harmonic termination for a class AB power amplifier
Keywords :
S-parameters; equivalent circuits; impedance matching; microwave power amplifiers; 68.8 percent; 7.5 GHz; 8.6 dB; biasing condition; class AB power amplifier; high efficiency power amplifier; second harmonic termination selection; simplified design method; small signal S-parameter data; Calibration; Circuit testing; Design methodology; Fixtures; Gain; High power amplifiers; MESFETs; Power amplifiers; Power system harmonics; Scattering parameters;
Conference_Titel :
Microwave Conference, 1999 Asia Pacific
Print_ISBN :
0-7803-5761-2
DOI :
10.1109/APMC.1999.833675
