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Proceedings Paper

Branch-line hybrid-rings with coupled lines for miniaturization
Author(s): Iwata Sakagami; Takatugu Munehiro; Hiroyuki Tanaka
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Paper Abstract

A branch-line hybrid-ring is composed of four quarter-wavelength transmission lines, and hence occupies a large area on printed circuit boards because of its loop structure. For this reason, reduced-size hybrid rings using multilayer meander-like transmission lines or lumped capacitors have been proposed. In this paper, a branch-line hybrid-ring which includes microwave C-type sections (C-section) is proposed for size reduction. The perfect input match and isolation can be attained at a center frequency as in a normal hybrid-ring. No practical differences are found in the frequency characteristics between the normal network and the proposed one.

Paper Details

Date Published: 19 August 1994
PDF: 9 pages
Proc. SPIE 2211, Millimeter and Submillimeter Waves, (19 August 1994); doi: 10.1117/12.182985
Show Author Affiliations
Iwata Sakagami, Muroran Institute of Technology (Japan)
Takatugu Munehiro, Muroran Institute of Technology (Japan)
Hiroyuki Tanaka, S.B. Techno-Research Co., Ltd. (Japan)

Published in SPIE Proceedings Vol. 2211:
Millimeter and Submillimeter Waves
Mohammed N. Afsar, Editor(s)

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