A K-Band MMIC Frequency Doubler Using Resistive Series Feedback Circuit

Yasushi SHIZUKI  Yumi FUCHIDA  Fumio SASAKI  Kazuhiro ARAI  Shigeru WATANABE  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E83-C   No.5   pp.759-766
Publication Date: 2000/05/25
Online ISSN: 
DOI: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
frequency doubler,  low spurious,  resistive series feedback,  MMIC,  

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Summary: 
A novel K-band MMIC frequency doubler has been developed using resistive series feedback circuit. The doubler exhibits much better D/U ratio, smaller output power variation against ambient temperature and lower power consumption than those of the conventional single-ended doubler. This paper presents the simulation results on the effect of the resistive series feedback by harmonic balance methods. To obtain practical and accurate simulation results, newly developed gate charge model for Cgs and Cgd is introduced. The fabricated result of the proposed MMIC is also demonstrated.