使用電阻性場效電體製作寬頻單平衡式混頻器

Abstract

本論文主要是在描述以FET製成的被動式混頻器（或稱電阻性混頻器）的 表現。其內容包 含了: (1)微帶線結構完成50MHZ的IF輸出頻率; (2)微帶線結構完成750MHZ的IF輸出頻率; (3)共平面式結構完成750MHZ的IF輸出頻率。 再分別測量其轉頻耗損（Conversion Loss）,隔絕性（Isolation）, 雜訊指數（Noise figure），輸入端１dB壓縮點（Input 1dB compress point）等重要參數然後進行比較其性能。 The paper describes performances of three broadband singly- balanced mixer using resistive FET. It contains mixers made by (1) Microstrip line structure with its IF outputs 50MHZ; (2) Microstrip line structure with its IF outputs 750MHZ; (3) Coplanar line structure with its IF outputs 750MHZ. We will measure the conversion loss, isolation, noise figure, input 1dB compress point and so on important parameters for each one and compare their performances.