Abstract
A Schottky diode model for the mixer's design is presented in this paper.According to the physical structure of the Schottky diode,a novel 3D electromagnetic(EM) model was built and analyzed by finite element method.A wide-band equivalent circuit up to 110 GHz was proposed taking the parasitic effects distributed in the diode into account.Based on the proposed equivalent circuit,a Ka-band balanced mixer was designed and optimized.The measured conversion loss is 7.5 dB to 10 dB from 32 GHz to 37 GHz,which agreed well with the simulated one.
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