Amplifiers – Parametric amplifiers – Semiconductor type
Patent
1980-03-11
1983-01-25
Moskowitz, Nelson
Amplifiers
Parametric amplifiers
Semiconductor type
330 47, 315 5, H01S 400
Patent
active
043706215
ABSTRACT:
An electron cyclotron maser high-frequency generator/amplifier having a cavity resonator positioned in an axial magnetic field. A spiralling beam of relativistic electrons is injected into the cavity and stimulated emission of radiation by the electrons takes place at the frequency of a wave mode supported by the cavity resonator. The transverse efficiency, defined as the average electron energy loss divided by its initial transverse energy, is maximized by disposing a shaped iron collar about the cavity resonator to provide an axial magnetic field in the cavity resonator whose amplitude increases in the beam direction-of-travel. In an alternative embodiment, the transverse efficiency is maximized by tapering the inner wall of the cavity in the axial direction to provide a wave-mode in the cavity resonator whose electric-field amplitude increases in the beam direction-of-travel.
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Chu Kwo R.
Smith Robert A.
Sprangle Phillip A.
Beers Robert F.
Ellis William T.
Klein Alan P.
Moskowitz Nelson
The United States of America as represented by the Secretary of
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