An InP DHBT 140 GHz-165 GHz amplifier

We present a compact, 3-stage millimeter-wave monolithic integrated circuit (MMIC) amplifier with an operating frequency of 140–165 GHz, formed by common-emitter configured 0.5 um InP DHBTs and a multilayer thin-film microstrip (TFM) wiring environment. The amplifier small signal gain exhibits >5 dB from 140 GHz–165 GHz. The peak gain is 11 dB at 140 GHz. This is the first time reported InP DHBT MMIC amplifier operating in D-band employing TFM in china. The total size of this 3-stage amplifier is only 1.04 mm×0.88 mm.