作者: Frank Ellinger , Corrado Carta , Paul Starke
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摘要: This work presents an integrated wideband amplifier, with ac-coupled two-stage cascode topology. It is intended for mm-wave applications at 180 GHz (G-band) and offers a gain of 17.7 dB bandwidth 80 GHz. The design optimized low noise figure 7.5 reaches medium output power levels, 1-dB compression point occuring about 0 dBm. total consumption, including bias blocks, 48 mW. stability the cascodes are improved matching networks employing inductive feedback from collector to base. An method, based on zero-ohm transmission lines, used realizing ac-blocks equivalent series resistance. final chip occupies area 0.42 mm2 implemented as monolithic microwave circuit (MMIC) in 250 nm InP heterojucntion bipolar transistor (HBT) process, which maximum oscillation frequency f max 600