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2019-10-30
A Dual-Mode Resonator-Fed Gap Coupled Filtering Antenna with Improved Selectivity and Bandwidth
By
Progress In Electromagnetics Research Letters, Vol. 87, 137-143, 2019
Abstract
A novel multi-mode resonator-fed filtering patch antenna with improved selectivity and bandwidth is proposed in this paper. Unlike well-known cascaded-resonator structure, the proposed filtering antenna shows five poles in the reflection coefficient response utilizing only one resonator. The gap-coupled radiating part introduces two gain zeros along each side of the gain response. Meanwhile, the dual-mode resonator feeding structure of the antenna will also produce another two gain zeros. All these four gain zeros highly improve the selectivity of the filtering antenna without increasing the number of coupling resonators. In addition, the bandwidth of the antenna is also considerably extended using this feeding structure. For validation, a prototype is designed, fabricated, and measured. The measured results agree well with the simulated ones.
Citation
Yun Wang, Ya-Liang Chen, Jian-Feng Qian, and Yan Cao, "A Dual-Mode Resonator-Fed Gap Coupled Filtering Antenna with Improved Selectivity and Bandwidth," Progress In Electromagnetics Research Letters, Vol. 87, 137-143, 2019.
doi:10.2528/PIERL19071507
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