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Analysis of Optimum Bias for Maximun Conversion Gain of Cascode Coupled Microwave Self-Oscillating-Mixer  

이성주 (경남대학교 정보통신공학과)
이영철 (경남대학교 정보통신공학과)
Abstract
In this paper, We analyze the optimum bias conditions of cascode coupled microwave mixer for maximum conversion gain mixer. Microwave self-oscillating mixer by two GaAs MESFET cascode coupled, to upper GaAs MESFET operating as a oscillator with high Q dielectric resonator and the lower GaAs MESFET operated as a mixer with low noise and high conversion characteristics. As a result of experiments, cascode coupled microwave self oscillating mixer according to optimun bias shows an 5.92 dBm oscillating power, -132.0dBc/Hz @ 100KHz at 5.15GHz and 3dB conversion loss.
Keywords
cascode coupling; Self-Oscillating Mixer;
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