A 15-50 Ghz-Band Gaas MMIC variable attenuator with 20-db attenuation Control

摘要

a 15-50 GHz-band GaAs MMIC variable at- tenuator has been developed for microwave and millimeter-wave wireless communications systems. The attenuator employs a bal- anced distributed configuration using shunt connected HEMT's in order to realize a broadband operation, a low insertion loss and a good impedance matching with simple control bias scheme.