Hung, C. L.C. L.HungTsai, Y. C.Y. C.TsaiKWO-RAY CHU2019-12-272019-12-2719980093-3813https://scholars.lib.ntu.edu.tw/handle/123456789/443235[SDGs]SDG7A study of open-end cavities by the field-energy methodjournal article10.1109/27.700874WOS:000074686400082