The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 1990
Filed:
Apr. 14, 1988
Applicant:
Inventors:
Robert W Schumacher, Canoga Park, CA (US);
Joseph Santoru, Valencia, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ; H05B / ;
U.S. Cl.
CPC ...
31511121 ; 31323131 ;
Abstract
A plasma wave tube is described in which a pair of counterpropagating electron beams are injected into a waveguide housing in which a plasma is formed, prefeferably by an array of fine wire anodes. The electron beams couple with the plasma to produce electron plasma waves, which radiate electromagnetic energy for beam voltages and currents above established threshold levels. A rapid control over output frequency is achieved by controlling the plasma discharge current, while the output power can be controlled by controlling the voltage and/or current levels of the electron beams.