Novel Designs for Submillimeter Subharmonic and Fundamental Schottky Mixers
نویسندگان
چکیده
To meet requirements for future planetary and astrophysics space missions, new mixers have been designed to take advantage of the frameless GaAs membrane technology developed at JPL. Single-diode fundamental mixers have been designed for 350,440, 560,640 and 1200 GHz, with 14% bandwidth. Additionally, subharmonic mixers for 560 GHz have been designed. Two circuit topologies have been used for the subharmonic mixers, one based on previous designs, and the other based on the balanced doubler configuration. These are expected to give single sideband noise temperatures at the diode of about 2500 K, with conversion loss around 13 dB. The fundamental mixers are expected to have SSB noise temperatures near 1300 K at 560 GHz, conversion loss about 8 dB.
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