A novel triple-band microstrip branch-line coupler with arbitrary operating frequencies

Liou, C.-Y.C.-Y.LiouWu, M.-S.M.-S.WuYeh, J.-C.J.-C.YehChueh, Y.-Z.Y.-Z.ChuehSHAU-GANG MAO2018-09-102018-09-102009http://www.scopus.com/inward/record.url?eid=2-s2.0-70449526096&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/350505A novel triple-band microstrip branch-line coupler with arbitrary operating frequenciesjournal article10.1109/LMWC.2009.2031998