FET基波和諧波振蕩器的大信號設計
THE LARGE-SIGNAL DESIGN FOR FET FUNDAMENTAL AND HARMONIC OSCILLATORS
-
摘要: 本文根據(jù)測出的FET的小信號S參數(shù)和靜態(tài),I-V特性建立了場效應管的大信號模型,然后應用諧波平衡法對FET基波和諧波振蕩器進行了分析和優(yōu)化設計,得到了振蕩器穩(wěn)態(tài)時的電流值。并采用一種簡化的CAD方法求出了最佳功率輸出時的外電路參數(shù)。在此基礎上,研制了基波和Q波段、二次諧波振蕩器。實驗結(jié)果與理論分析基本一致。
-
關(guān)鍵詞:
- FET; 大信號模型; 諧波平衡法; 諧波振蕩器
Abstract: A large-signal model for GaAs FET is derived based on its small-signal S parmeter and DC characteristics. The harmonic balance algorithm is applied to analyze and optimize the FET fundamental and harmonic oscillators, and the values of steady current are obtained. In the solving process, a simplified CAD approach is used to obtained the parameters of matching network when the output power is maximum. Finally, a fundamental oscillator and a harmonic oscillator of Q-band are fabricated. The measurements show that the theoratical analysis and experimental results are in good agreement. -
F. Filicori, V.A. Monaco et al., IEEE Trans. on MTT, MTT-27(1979)12, 1043-1051.[2]吳萬春,微波半導體電路CAA與CAD講義,西安電子科技大學,西安,1987年.[3]廖敏,FET基波和諧波振蕩器的研究,東南大學碩士研究生論文,南京,1991年1月.[4]苗敬峰,毫米波電路,東南大學出版社,南京,1988年. -
計量
- 文章訪問數(shù): 2141
- HTML全文瀏覽量: 112
- PDF下載量: 781
- 被引次數(shù): 0
下載:
