P. Lehikoinen et al., A 119 GHZ PLANAR SCHOTTKY DIODE MIXER FOR A SPACE APPLICATION, International journal of infrared and millimeter waves, 17(5), 1996, pp. 807-818
A planar single-ended GaAs Schottky diode mixer has been designed, bui
lt, and tested at 119 GHz. The mixer front end includes also a wavegui
de filter for image rejection, and a temperature compensated ring filt
er. Measurements at room temperature showed a conversion loss of 7 dB
and a noise temperature of 900 K (SSB). At 100 K the measured noise te
mperature of the mixer was 500 K (SSB).