Ka-Band Cubically Symmetric Turnstile Power Combiner
Abstract
This report describes a novel six-port turnstile-type power combiner for use as a four-way transmission- (or reflection-) type power combiner/ divider. This unique turnstile is rotationally symmetric about its four major diagonals, thus ensuring equal power division/combination. Each pair of opposing waveguide inputs is orthogonally oriented to provide excellent cross-port isolation. Generalized scattering matrices are used to analyze six-port junction turnstiles of varying degrees of symmetry. Scattering matrix analysis is used to demonstrate further the reflective and transmissive modes of turnstile power combining. Three versions of cubically symmetric turnstile that were evaluated for use in the 26.5- to 40.- gigahertz frequency band are described. The final turnstile version was integrated with four single-IMPATT oscillator modules to demonstrate transmission-mode power combining. Potential benefits of cascaded and extended level turnstile combining include high-power generation at millimeter- and submillimeter-wave frequencies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1991
- Accession Number
- ADA238004
Entities
People
- C. L. Kidner
- D. R. Bowling
- T. W. Williams
Organizations
- Naval Air Weapons Station China Lake