Amplifiers – With semiconductor amplifying device – Including field effect transistor
Patent
1993-07-28
1994-10-18
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including field effect transistor
330286, H03F 360
Patent
active
053572122
ABSTRACT:
A microwave amplifier includes input-side and output-side matching circuits disposed on the input side and output side of a microwave FET. Each of the matching circuits is a distributed constant circuit including microstrip lines disposed on a substrate of dielectric material. The input-side matching circuit includes a connecting section for connection to the FET. The connecting section comprises a first microstrip line having a first width equal to that of the input-side matching circuit, and a second microstrip line continuous and integral with the first microstrip line and having a second width smaller than the first width. The connecting section connects the input-side matching circuit to the input of the FET.
REFERENCES:
"Characterization of Discontinuities-II", Computer-Aided Design, pp. 189-199, Artech House, 1981.
Koster et al., "The Microstrip Step Discontinuity: A Revised Description", IEEE Transactions on Microwave Theory and Techniques, vol. MTT-34, No. 2, 1986, pp. 213-223, Feb. 1986.
Mitsubishi Denki & Kabushiki Kaisha
Mullins James B.
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