Abstract

This paper describes the design and development of mixer at millimeter wave frequency using chip diodes in crossbar configuration. The mixer has been designed in suspended stripline configuration on 2 mil fused quartz (silica) substrate. Cosimulation between Agilent Advance Design System (ADS) and CST Microwave studio is used to simulate and optimize the mixer circuit. The conversion loss of this self biased mixer with ~ 10 dBm of LO power over RF bandwidth (134 to 146 GHz) with LO frequency at 140 GHz has been measured Measurement results shows minimum conversion loss of the order of 8 dB and achieved LO to RF isolation was greater than 28 dB.

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