Compact Integrated Lumped-Element Bandpass Filter Loaded with Defected Ground Structure Based on Multilayer Liquid Crystal  Polymer Substrate
LIU Weihong, CHEN Yuan, HUANG Qian, LIU Qingran
J Shanghai Jiaotong Univ Sci . 2025, (2): 227 -232 .  DOI: 10.1007/s12204-023-2622-y