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Design of High-gain W-band MMIC Amplifier Using Source Feedback  

Park, Sang-Min (Kwangwoon University)
Kim, Young-Min (Seoul National University)
Koh, Yu-Min (Seoul National University)
Seo, Kwang-Seok (Seoul National University)
Kwon, Young-Woo (Seoul National University)
Jeong, Jin-Ho (Sogang University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.47, no.10, 2010 , pp. 74-79 More about this Journal
Abstract
In this paper, a high gain W-band amplifier is presented using 70 run mHEMT MMIC technology. The length of source feedback line of common-source FET is carefully determined to maximize the gain at a design frequency. Simulation shows that MAG can be increased by 0.8 dB by optimizing the length of this line. In addition, this feedback line changes the input impedance of the common-source FET in a way that the input match can be made easier. In this work, 4-stage amplifier is designed on CPW using the source feedback. The measurement shows the excellent gain performance higher than 22.0 dB across 70~103 GHz.
Keywords
amplifier; HEMT; MMIC; W-band;
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