A GaAs Double-Balanced Dual-Gate FET Mixer IC for UHF Receiver Front-End Applications

A double-balanced dual-gate FET mixer has been developed aiming at the application to a front-end circuit of the UHF receivers. An experimental IC has exhibited a 6 - 8 dB conversion gain without matching over a wide frequency range from 100 MHz to 800 MHz with the well suppressed RF/LO feedthough by more than 20 dB and third-order intermodulation product of -60 dB.