This paper describes the approaches used and some of the results obtained building integrated mixers in

band. These mixers are built with a unique "bilithic" Schottky-barrier diode chip and evaporated microstrip circuitry on alumina dielectric. Mixer noise figures are less than 7.5 db with local oscillator powers of

to 30 mw. The impedances are

in and out with the signal input VSWR being less than 1.5/1 over the local oscillator range and a bandwidth of

%.