Amplifiers – With semiconductor amplifying device – Including field effect transistor
Patent
1992-12-11
1994-05-24
Mullins, James B.
Amplifiers
With semiconductor amplifying device
Including field effect transistor
330294, 330306, H03F 3193
Patent
active
053152654
ABSTRACT:
An RF power FET amplifier is designed using parasitic resonant matching to reduce low intermodulation distortion. An input inductor is connected in parallel with the capacitance of the common-source input capacitance, an output inductor is connected in parallel with the common-source output capacitance. Feedback provided by the common-source capacitance between gate and drain is utilized to improve linearization and stability. The field effect transistor is designed so that the feedback signal resulting from the feedback capacitance is 180.degree. with respect to the forward gain.
REFERENCES:
patent: 3441865 (1969-04-01), Siwko
patent: 3495183 (1970-02-01), Doundoulakis et al.
patent: 4771247 (1988-09-01), Jacomb-Hood
McCalpin William H.
Wisherd David S.
Mullins James B.
Spectrian, Inc.
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