Wideband radial power combiner/divider fed by a mode transducer

US7385462B1 · kind B1 · utility

Assignee

• The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · US

Inventors

• Larry W. Epp · Pasadena, US
• Daniel J. Hoppe · Newport, US
• Daniel Kelley · Hinkley, US
• Abdur R. Khan · Sierra Madre, US

Key dates

• Filing date: Mar 14, 2006
• Grant date: Jun 10, 2008
• Expiry date: Sep 8, 2026

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01P5/12
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A radial power combiner/divider capable of a higher order (for example, N=24) of power combining/dividing and a 15% bandwidth (31 to 36 GHz). The radial power combiner/divider generally comprises an axially-oriented mode transducer coupled to a radial base. The mode transducer transduces circular TE01 waveguide into rectangular TE10 waveguide, and the unique radial base combines/divides a plurality of peripheral rectangular waveguide ports into a single circular TE01 waveguide end of the transducer. The radial base incorporates full-height waveguides that are stepped down to reduced-height waveguides to form a stepped-impedance configuration, thereby reducing the height of the waveguides inside the base and increasing the order N of combining/dividing. The reduced-height waveguides in the base converge radially to a matching post at the bottom center of the radial base which matches the reduced height rectangular waveguides into the circular waveguide that feeds the mode transducer.