An Asymmetrical Suspended Stripline Directional Coupler

Osami ISHIDA
Yoji ISOTA
Moriyasu MIYAZAKI
Fumio TAKEDA
Norio TAKEUCHI

Publication
IEICE TRANSACTIONS (1976-1990)   Vol.E69    No.4    pp.333-334
Publication Date: 1986/04/25
Online ISSN: 
DOI: 
Print ISSN: 0000-0000
Type of Manuscript: Special Section LETTER (Special Issue: Papers from 1986 National Convention IECE Japan)
Category: Microwave Circuits
Keyword: 


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Summary: 
This letter describes a novel coupled-transmission-line directional coupler using an asymmetrical suspended stripline with unequal conducting strips on both sides of a dielectric substrate. The directional coupler has a rang of coupling values from 5 to 9 dB which is difficult to be realized by a conventional symmetrical suspended stripline coupler.