Title :
CDMA handset power amplifier with diode load modulator
Author :
Seungwoo Kim ; Lee, Kyungho ; Zampardi, Peter J. ; Kim, Bumman
Author_Institution :
Dept. of Electr. Eng., Pohang Univ. of Sci. & Technol., Gyeongbuk, South Korea
Abstract :
A new monolithic PA for 836 MHz CDMA cellular phone is developed using a simple diode based load modulator at the output matching circuit. The modulation network allows power level dependent load impedances for better power-added efficiencies. Especially, the PAE at the lower output power range, less than 10 dBm where most of handset operation arises, is increased more than 80%.
Keywords :
impedance matching; microwave power amplifiers; mobile handsets; modulators; 80 percent; 836 MHz; CDMA cellular phone; CDMA handset power amplifier; diode load modulator; load impedances; modulation network; monolithic PA; output matching circuit; power level dependent; power-added efficiencies; Circuits; DC-DC power converters; Diodes; Impedance matching; Insertion loss; Multiaccess communication; Power amplifiers; Power generation; Telephone sets; Voltage control;
Conference_Titel :
Microwave Symposium Digest, 2005 IEEE MTT-S International
Print_ISBN :
0-7803-8845-3
DOI :
10.1109/MWSYM.2005.1516690
