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Substrate-integrated-waveguide-fed slotted patch filtering antenna and array with enhanced selectivity
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DOI：10.1016/j.aeue.2023.154936.png)
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摘要
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In this paper, a slotted patch filtering antenna fed by substrate integrated waveguide (SIW) cavity is investigated. The microstrip patch (MP) acts as not only a radiator but also the last resonator of the bandpass filter (BPF) for synthesizing the filtering response. Furthermore, a pair of slots is etched on the MP to introduce a controllable radiation null at the upper passband edge without adding additional filtering circuits, resulting in an enhanced filtering response with a sharp band skirt. More importantly, the mentioned way can be easily transferred to design filtenna array. For demonstration, a prototype of 2 x 2 slotted patch filtenna array with a center frequency of 13.6 GHz is designed, fabricated and measured. The measurement results exhibit that the proposed slotted patch filtenna array possesses flat passband gain with a peak gain of 12.9 dBi, an 88% peak efficiency and a radiation null at 14.64 GHz. Good agreement between the simulation and measured results is observed.
Keyword:
Slotted patch antenna
Filtenna array
Radiation null
Substrate integrated waveguide (SIW)
Enhanced selectivity
期刊
A
IF:
3.2
论文数:
5.8K
被引数:
8.3K
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