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First‐order eigenmode analysis of symmetrical five‐port microstrip ring coupler
Author(s) -
Yeo S. P.,
Yeo T. S.,
Ng K. M.
Publication year - 1989
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650020305
Subject(s) - microstrip , normal mode , port (circuit theory) , hybrid coupler , bandwidth (computing) , eigenmode expansion , ring (chemistry) , physics , power dividers and directional couplers , engineering , acoustics , electronic engineering , telecommunications , optics , chemistry , vibration , organic chemistry
Explicit formulas to predict the characteristics of a symmetrical five‐port microstrip ring coupler are obtained from a first‐order eigenmode analysis. Tests on a prototype coupler over the 2—4‐GHz bandwidth indicate that the agreement between theory and experiment is reasonably good.