High-efficiency AlGaAs/GaAs HBT power amplifier MMIC for 1.9 GHz Japanese digital cordless phone

The high-volume production of heterojunction bipolar transistors

“…There has been a tremendous insertion of HBTs as power amplifiers in the past 24 months in their L-band region due to the low-voltage power supply, high power-added efficiency, and high linearity. [1][2][3][4][5][6] HBTs offer circuit manufacturers performance and excellent process yield, which translate into significant cost advantages.…”