"S. Chen,T. Tomura,J. Hirokawa","Optimization of the Cross-sectional Shape in a Waveguide 2-plane-Coupler with respect to Conditions on Phase Constants","Philippine-Japan Workshop Wirel. Radio Antenna Tech.",,,,,,2019,Dec. "’ÂŽáŠ,ŒË‘ş’,œAě“ń˜Y","“ą”gŠÇ 2 –ĘŒ‹‡ŠíŒ‹‡—Ěˆć’f–ĘŒ`ó‚ĚˆĘ‘Š’萔đŒĹ“K‰ť","MŠwƒGƒŒƒ\‘ĺ",,,,,,2019,Sept.