Yang, M.-C.M.-C.YangLi, J.-H.J.-H.LiJIA-HAN LI2020-01-172020-01-172004https://scholars.lib.ntu.edu.tw/handle/123456789/451491[SDGs]SDG16Functional waveguide mode transformersjournal article10.1109/TMTT.2003.8212672-s2.0-1242263467https://www.scopus.com/inward/record.uri?eid=2-s2.0-1242263467&doi=10.1109%2fTMTT.2003.821267&partnerID=40&md5=8f2a4367bd59e1cebee738238d677cf3