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IEICE TRANSACTIONS on Electronics

High-Power Millimeter Wave MMIC Amplifier Design Using Improved Load-Pull Method

Kazuo NAGATOMO, Shoichi KOIKE, Naofumi OKUBO, Masafumi SHIGAKI

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Summary :

This paper describes the design of a 38-GHz high power MMIC amplifier using an improved load-pull technique. We improved the load-pull technique accuracy by using MMIC transtormers to match the input and output impedances of a GaAs MESFET to about 50 ohms. We used this technique to measure the large-signal load impedance of a FET with a 600-µm-wide gate. Using the data obtained, we developed an MMIC amplifier composed of two of these FET cells. At 38 GHz, the amplifier has an output power of 23.5 dBm for a 1 dB gain compression level.

Publication
IEICE TRANSACTIONS on Electronics Vol.E75-C No.6 pp.663-668
Publication Date
1992/06/25
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Issue on MMIC Technology)
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