55 GHz dynamic frequency divider IC

Abstract

A divide-by-two dynamic frequency divider based on enhancement and depletion 0.2 µm gate length pseudomorphic AlGaAs/InGaAs-HEMTs (fT = 68 GHz and 60 GHz) was designed and fabricated. High-speed operation up to 55 GHz has been measured. The circuit is based on source-coupled FET logic and has single-ended input and complementary outputs to ground. The power consumption is 300 mW using two supply voltages of 4 and –2.5 V.