A new approach to analytical calculation of microstrip directional couplers with full structure symmetry

Ivan N. Prudyus; Valeriy I. Oborzhytskyy

doi:10.3103/S0735272711090020

Authors

Ivan N. Prudyus Lviv Polytechnic National University, Ukraine https://orcid.org/0000-0003-3331-0892
Valeriy I. Oborzhytskyy Lviv Polytechnic National University, Ukraine https://orcid.org/0000-0002-4829-7451

DOI:

https://doi.org/10.3103/S0735272711090020

Keywords:

directional coupler, microstrip directional coupler

Abstract

A new approach to analytical calculation of directional couplers that have two symmetry planes, which is based on using input impedances of co-phase (symmetrical) and opposite-phase (asymmetrical) partial two-poles is suggested. Examples of using such approach for calculations of directional couplers on the basis of a coupled lines segment with three directivity types are discussed.

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