L.-Y. Ou YangS.-Y. ChenSHIH-YUAN CHEN2019-10-312019-10-312018https://scholars.lib.ntu.edu.tw/handle/123456789/429338Signal-to-Noise Ratio Enhancement of High Frequency Ground Wave Radar Based on a Metamaterial-Based Transition Structureconference paper10.1049/cp.2018.10632-s2.0-85057343583