A 3.3 V, 1.4 W GaAs power amplifier for CDMA/AMPS dual-mode cellular phone

Abstract

For C D M N i W S dual-mode cellular phones, a power amplifier operating at 3.3V has been developed for the first time. The amplifier shows an output power of 31.5 dBm and 13 power-added efficiency of 61% for AMPS mode. The third order intermodulation and the fifth order one are measured to be -32 d13c and -45 dBc at an output power of 26 dBm for CDMA mode. These are good enough for dual-mode requirements.

Single‐voltage‐supply operation of Ga0.51In0.49P/AlGaAS/IN0.15Ga0.85As PHEMTS with high‐power density

“…To our knowledge, these are the first reported power performances of GaInP/AlGaAs/InGaAs in the literature. The power density obtained was higher than the previously reported values [2,4,5,15,[17][18][19][20][21][22][23][24].…”