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Simple design formula of a slot‐coupled directional coupler between double‐sided microstrip lines
Author(s) -
Lu JuiHan,
Wong KinLu,
Chang ChihYao
Publication year - 1998
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/(sici)1098-2760(19980405)17:5<325::aid-mop15>3.0.co;2-2
Subject(s) - hybrid coupler , microstrip , ground plane , rat race coupler , power dividers and directional couplers , microwave , simple (philosophy) , magic tee , plane (geometry) , engineering , electronic engineering , physics , topology (electrical circuits) , electrical engineering , mathematics , telecommunications , geometry , philosophy , epistemology , antenna (radio)
A simple design formula of a directional coupler that consists of two microstrip lines coupled through two narrow rectangular slots in a common ground plane is presented. By applying the design equations for the quasilumped quadrature coupler, the relative position and dimensions of the two narrow slots in the common ground plane can easily be determined. Typical designs have been implemented, and the S ‐parameters for such a slot‐coupled directional coupler are measured and verified by simulated results. © 1998 John Wiley & Sons, Inc. Microwave Opt Technol Lett 17: 325–328, 1998.