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:
Sep. 04, 2007
Filed:
Nov. 05, 2004
C. Vincent Baker, Tucson, AZ (US);
James G. Small, Tucson, AZ (US);
C. Vincent Baker, Tucson, AZ (US);
James G. Small, Tucson, AZ (US);
Raytheon Company, Waltham, MA (US);
Abstract
An electromagnetic radiation source is disclosed. The electromagnetic radiation source includes an anode having a first conductor, a second conductor positioned relative to the first conductor, a plurality of pole pieces coupled to at least one of the first conductor and the second, and at least one mechanical phase reversal positioned along the first conductor or second conductor. Adjacent pole pieces are separated by a gap. The electromagnetic radiation source also includes a cathode separated from the anode by an anode-cathode space, electrical contacts for applying a dc voltage between the anode and the cathode and establishing an electric field across the anode-cathode space, and at least one magnet arranged to provide a dc magnetic field within the anode-cathode space generally normal to the electric field. Electrons emitted from the cathode are influenced by the electric and magnetic fields to follow a path through the anode-cathode space and pass in close proximity to the plurality of pole pieces, and the gaps between adjacent pole pieces provide fringing fields which interact with the electrons to produce single mode operation at a desired operating frequency.