A NOVEL ADAPTIVE CURRENT BIASED LINEAR RADIO-FREQUENCY POWER AMPLIFIER ON SIGE HBT PROCESS

摘要

A novel adaptive current biased CLASS-A/shallow AB RF power amplifier is demonstrated in this paper. By theoretical deduction, a prototype is described to improve the linearity of a linear PA. With the realization on Jazz 0.35 μm SiGe HBT process and test verification, the novel adaptive current biased RF power amplifier shows 3 ～ 7dB improvement of the ACPR at the output power of 19 dBm to meet the demand of CDMA IS95 spectrum mask without debasing the efficiency.