Kuo, L.-R.L.-R.KuoHSI-TSENG CHOU2018-09-102018-09-102008http://www.scopus.com/inward/record.url?eid=2-s2.0-55649093384&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/341094[SDGs]SDG7An axially elevated spiral antenna for a high directive CP radiationconference paper10.1109/APS.2008.4619226