Title: High-performance differentially fed coupledline directional couplers realised in inhomogeneous medium
Authors: Ilona Piekarz , Jakub Sorocki, Krzysztof Wincza, Slawomir Gruszczynski, John Papapolymerou
Journal: IET Microwaves, Antennas & Propagation
Publication type: article
DOI: 10.1049/iet-map.2018.5737