Abstract
A micropower-relevant model is extracted from the DC characteristics of an n-type buried channel Si/SiGe hetero-junction modulation doped FET (HMODFET). This model is then used to design a novel monolithic SiGe single-stage class-A power amplifier for micropower operation (sub 500 μW). The amplifier is fabricated and measured data of the power-gain against operating power are presented for the first time.