The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)
- Volume 7 Issue 2
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- Pages.178-185
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- 1996
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- 1226-3133(pISSN)
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- 2288-226X(eISSN)
Analysis of a Distributed Mixer Using Dual-gate MESFETSs
Dual-gate MESFET를 사용한 분포형 혼합기 해석에 관한 연구
Abstract
In this paper, a theoretical analysis of a wide band distributed mixer using a dual-gate GaAs MESFET's(DGFET) is introduced. Based on low noise mixer mode(LNM) region modeling of DGFET, variation of g/sub m/ and conversion gain are presented versus bias. The distributed mixer is composed of drain and gate transmission line, m-derived image impedance matching circuits at each input and output port, and DGFET's. Through computer simulation, wide-band characteristics of designed distributed mixer are confirmed. And, it is certificated that LO/RF isolation between gate 1 and gate 2 is obtained more than 15dB.
Keywords