Compact tuner for high power microwave source

US7863997B1 · kind B1 · utility

Assignee

• The Ferrite Company, Inc. · US

Inventors

• William J. Alton · Pepperell, US
• David R. Lawson · Portland, US
• George M. Harris · Auburn, US
• Isaac Feldpausch · Nashua, US
• E. Eugene Eves, II · Westford, US
• Paul Alton · Mason, US

Key dates

• Filing date: Jun 13, 2008
• Grant date: Jan 4, 2011
• Expiry date: Jun 30, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01P5/183
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A compact, high speed, miniaturized adaptive controller for a microwave power generator. A pair of directional couplers are arranged between a microwave source and a circulator to measure forward and reverse power. An electromagnet in the circulator may be controlled in response to a VSWR calculation. In some arrangements, the directional couplers may be loop-type directional couplers that are integrated into a waveguide magnetron launching assembly. The directional couplers may use a tapered coaxial line that presents an impedance that reduces along the length thereof. This enhances the directivity of the loop coupler and improves performance of the controller.