山东建筑大学学报2025，Vol.40Issue(3)：70-78,9.DOI:10.12077/sdjz.2025.03.009
基于半模基片集成波导的宽带滤波天线设计
Broadband filtering antenna based on Half-Mode Substrate Integrated Waveguide
摘要
Abstract
To enhance the filtering performance of filtering antennas,this paper proposes a broadband filtering antenna based on Half-Mode Substrate Integrated Waveguide(HMSIW)structure.The antenna consists of an HMSIW cavity loaded with a rectangular slot and a parasitic patch loaded with four metal vias,with energy coupled through a slot between the cavity and the patch.To further extend the antenna's operating bandwidth,two parallel rectangular slots are etched into the metal ground beneath the feedline.Measurement results of the optimized prototype show that the antenna achieves an operating bandwidth of 6.31 to 6.73 GHz,a relative bandwidth of 6.5%,and a maximum realized gain of 8.71 dBi.Within the passband,three resonance modes are observed,while two controllable radiation nulls appear at the band edges,effectively improving out-of-band suppression.The proposed antenna achieves excellent filtering characteristics while maintaining wideband operating and high gain,thereby significantly enhancing the integration level of the filtering antenna.关键词
滤波天线/半模基片集成波导/辐射零点Key words
filtering antenna/Half-Mode Substrate Integrated Waveguide/radiation null分类
电子信息工程引用本文复制引用
庄华伟,李高奇,孙方震,刘建钊..基于半模基片集成波导的宽带滤波天线设计[J].山东建筑大学学报,2025,40(3):70-78,9.基金项目
国防科技重点实验室基金项目(6142807190212) （6142807190212）
