Design of a 420GHz Sub-Harmonic Mixer based on planar Schottky diode

In this paper, a 420GHz Sub-Harmonic Mixer based on planar schottky diode is presented. The mixer circuit was fabricated on the 50um thick quartz substrate with a pair of anti-parallel flip-chipped schottky diodes. The planar schottky diode is fabricated in China Electronics Technology Group Corporation-13(CETC-13). Simulated results for the 420 GHz mixer achieved DSB conversion loss of 6.2dB@404GHz. The LO pumped power was 6dBm at 210GHz. The conversion loss was less than 8dB from 390GHz to 450GHz.