设计具有高选择性的紧凑型差分馈电端射滤波器

IF 1 4区 工程技术 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Microwave and Optical Technology Letters Pub Date : 2024-12-29 DOI:10.1002/mop.70077
Jie Deng, Rui-Qiong Wang, Peng Zou, Jing-Peng Li, Ling Yu, Min Xiang, Kun-Zhi Hu
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Design of Compact Differentially-Fed End-Fire Filtenna With High Selectivity

In this letter, a compact differentially-fed end-fire filtenna is developed. The developed filtenna consists of three drivers, a director, a reflector, and a pair of U-shaped strips. Different from conventional Yagi antenna with a single driver, multiple drivers are employed to concurrently broaden the impedance bandwidth and facilitate the filtering response. To further improve the lower frequency selectivity, a pair of split rings is inserted between the driver and the director. And a radiation null at lower frequency is generated due to the out-of-phase surface currents on director and split rings. For verification, a prototype with a center frequency of 3.9 GHz is designed, fabricated, and measured. The measurement results have a good agreement with the simulation ones. The developed filtenna has a fractional impedance bandwidth of 14.4% (3.62–4.18 GHz), a peak realized gain of 5.8 dBi, a front-to-back ratio over 15 dB within the entire operational band. In addition, the filtenna also owns good filtering response with suppression levels higher than 16 and 25 dB for low- and high-stopband, respectively.

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来源期刊
Microwave and Optical Technology Letters
Microwave and Optical Technology Letters 工程技术-工程:电子与电气
CiteScore
3.40
自引率
20.00%
发文量
371
审稿时长
4.3 months
期刊介绍: Microwave and Optical Technology Letters provides quick publication (3 to 6 month turnaround) of the most recent findings and achievements in high frequency technology, from RF to optical spectrum. The journal publishes original short papers and letters on theoretical, applied, and system results in the following areas. - RF, Microwave, and Millimeter Waves - Antennas and Propagation - Submillimeter-Wave and Infrared Technology - Optical Engineering All papers are subject to peer review before publication
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