Development of a 220-GHz Schottky Diode Subharmonic Mixer
نویسندگان
چکیده
In this paper, the design of a waveguide fixtuned 220GHz subharmonically pumped mixer using Schottky planar diodes is demonstrated. It is supposed to be applied in an experimental short-range and high-speed communication system. The anti-parallel pair of planar Schottky diodes from the Rutherford Appleton Laboratory (RAL) was flip-chip mounted and soldered onto a suspended 75μm-thick quartz microstrip circuit. Initial measurements yielded a double sideband (DSB) equivalent noise temperature below 2500K and conversion loss less than 10dB over the range from 200GHz to 235GHz with the IF frequency fixed at around 3GHz and LO power lower than 6mW. The optimum DSB noise temperature of 1368K and conversion loss of 6.5dB were obtained at 204GHz.
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