Synthesis Design of Bandpass Frequency Selective Surface With Multiple Transmission Zeros Using Slotline Structures

Zhang, Wanping; Li, Bo; Li, Zhu; Zhao, Xuankai; Lyu, Yun‐Peng; Cheng, Chonghu

doi:10.1109/tap.2022.3179534

Cited by 5 publications

(2 citation statements)

References 35 publications

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“…Here, λ 0 is the free-space wavelength of the center frequency f 0 . Compared with the designs proposed in [6,8,16,27], the modified designs in this paper have a larger fractional bandwidth with clean transition bands by introducing knitted structures. Although the designs in [9,15] have larger fractional bandwidth than the proposed modified miniaturized FSSs, these 3-D FSSs operate under single polarization in their reports, which limits the practical applications of these FSSs.…”

Section: Experiments Verificationmentioning

confidence: 99%

“…In addition, some novel design ideas for microwave circuits can also be used for reference, which is important and inspiring for 3-D FSS designs [10][11][12][13]. Li and Zhu proposed a new kind of 3-D FSS based on slotline [14][15][16]. They presented a synthesis technique for designing high-order and wideband 3-D FSSs, developing three kinds of 3-D FSSs based on a stacked slotline with a maximum bandwidth of 120% [15].…”

Section: Introductionmentioning

confidence: 99%

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High-Order Wideband Band-Pass Miniaturized Frequency-Selective Surface with Enhanced Equivalent Inductance

Zhu,

Wang,

Jin

2024

Electronics

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To extend the wideband performance of high-order band-pass filtering applications, optimized designs with knitted structures based on traditional miniaturized frequency-selective surfaces (FSSs) are proposed in this paper. The presented miniaturized FSSs consist of multiple metallic capacitive layers, knitted inductive layers, and substrates. In contrast to the conventional high-order miniaturized FSSs composed of metallic frames, patches, and substrates, the optimized miniaturized FSSs replace the original metallic wire frames with knitted structures. Both proposed modified miniaturized FSSs achieve a flat pass-band from 5.5 GHz to 10.3 GHz with a 3 dB bandwidth of 71.6% under vertical incidence. The unit cells have dimensions of 0.16 λ0 × 0.16 λ0 × 0.284 λ0 and 0.16 λ0 × 0.16 λ0 × 0.279 λ0, respectively, where λ0 is the free space wavelength at 7.9 GHz, which is the center frequency of the operating band. Numerical simulations and measurements demonstrate that the proposed modified miniaturized FSSs exhibit excellent wideband performance with clean transition bands around the pass-band during oblique incidence and are suitable for applications such as radomes, where wideband filtering is essential for covering multi-band functions of radar or communication instruments.

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