Design of ultra‐thin closely spaced dual‐band bandpass frequency selective surface

Yang, Shilin; Chen, Qiang; Bai, Jiajun; Fu, Yunqi

doi:10.1049/el.2017.2425

Cited by 11 publications

(8 citation statements)

References 10 publications

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“…Table 1 gives the comparison of the characteristics between the proposed 3D FSS and some state-of-art designs with similar responses, which shows there are advantages of the proposed 3D FSS in the aspects of high selectivity, small band ratio, good angular stability, dual polarisations, and compact unit cell. [5] 0.37λ 0 × 0.37λ 0 × 0.22λ 0 1.22 4 dual 45°/45° [ 6] 0.38λ 0 × 0.38λ 0 × 0.135λ 0 1.45 4 dual 30°/30° [ 7] 0.27λ 0 × 0.096λ 0 × 0.03λ 0 1.39 3 single -/- [8] 0.07λ 0 × 0.055λ 0 × 0.09λ 0 1.95 0 single 40°/- [9] 0.13λ 0 × 0.13λ 0 × 0.17λ 0 1.4 3 dual 40°/40°t his work 0.188λ 0 × 0.188λ 0 × 0.094λ 0 1.186 4 dual 60°/60°C…”

Section: Fig 2 Simulated Transmission and Reflection Coefficients Ofmentioning

confidence: 99%

“…However, these multi-layer FSSs usually have relatively larger electric size, and their angular stability performances are poor. With the help of a via-based 2.5D design, the miniaturisation of a dual-band FSS is realised [7]. Besides, a new type of dual-bandpass three-dimensional (3D) FSS with arbitrary band ratios is investigated [8].…”

mentioning

confidence: 99%

“…Besides, a new type of dual-bandpass three-dimensional (3D) FSS with arbitrary band ratios is investigated [8]. Unfortunately, these miniaturised FSSs [7,8] operate at single polarisation. Recently, a dual-polarised dual-band 3D FSS is proposed based on square coaxial waveguides [9].…”

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confidence: 99%

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Dual‐band three‐dimensional FSS with high selectivity and small band ratio

Xia

Zhu

et al. 2019

Electron. lett.

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In this Letter, a three-dimensional (3D) frequency selective surface (FSS) is proposed, exhibiting a dual-bandpass response with high selectivity and small band ratio. The unit cell of the presented 3D FSS consists of a pair of gridded double square loops (GDSLs) and a waveguide structure. Multiple transmission zeros and transmission poles are obtained from the electromagnetic coupling between the GDSLs. The electromagnetic coupling is enhanced by the waveguide structure, resulting in a dual-passband behaviour with high selectivity. Double square loops are designed to locate close to obtain a small band ratio. The measured results of the implemented FSS agree well with the simulated ones, which show that the proposed design can achieve the desired response to variations of incident angle from 0°to 60°for both TE and TM polarisations.

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Section: Fig 2 Simulated Transmission and Reflection Coefficients Ofmentioning

confidence: 99%

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confidence: 99%

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Dual‐band three‐dimensional FSS with high selectivity and small band ratio

Xia

Zhu

et al. 2019

Electron. lett.

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“…Nevertheless, these cascaded 2-D FSSs usually had a relatively large electrical size, and their angular stability performances were poor. By using a viabased 2.5-D structure, the miniaturization of a closelyspaced dual-band FSS was realized [25]. Furthermore, an alternative approach was provided by 3-D structures with multi-mode resonant cavities [4,9,26,27,28,29].…”

Section: Introductionmentioning

confidence: 99%

“…As described in [28], a new type of dual-bandpass 3-D FSS with arbitrary band ratios was investigated. Unfortunately, these two designs [25,28] only operated under single polarization. Additionally, the band ratios of most of the above-mentioned FSSs are large, which cannot satisfy the requirements of the practical applications.…”

Section: Introductionmentioning

confidence: 99%

Dual-bandpass 3-D FSS with close band spacing based on multiple square coaxial waveguides

Tang

Xia

et al. 2019

IEICE Electron. Express

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A three-dimensional (3-D) frequency selective surface (FSS) based on multiple square coaxial waveguides (SCWs) is proposed, which realizes a dual-bandpass response with close band spacing. In the unit cell of the proposed 3-D FSS, two concentric SCW propagation paths and one parallel-plate waveguide (PPW) propagation path are constructed by utilizing three square metallic tubes. Each SCW propagation path intrinsically generates one transmission pole by the square slot resonance, and the PPW propagation path produces another transmission pole by the halfwavelength resonance. In addition, two transmission zeros are introduced due to the counteraction of out-of-phase signals between different paths, improving the frequency selectivity. After properly adjusting the design parameters, two desired passbands are obtained around 4.4 and 4.845 GHz, and the band ratio is only 1.1. Through the electric-field distributions, equivalent circuit model and parameters study, the operating principle of the proposed 3-D FSS is investigated. A prototype of the proposed 3-D FSS is fabricated and measured. The measured results show that the proposed design can achieve a stable response under the incident angles up to 45°for both TE and TM polarizations.

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An Ultra‐Thin Dual‐Polarized Bandpass Frequency Selective Surface for 2.45‐/5.8‐GHz ISM Bands

Chellaiah,

2024

Int J Communication

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This paper presents the design of a single‐layer, double‐sided frequency selective surface (FSS) with bandpass characteristics at the S‐band (2.45 GHz) and C band (5.8 GHz) for sub‐6‐GHz Industrial Scientific and Medical (ISM) bands. The proposed FSS is based on the concept of complementary FSS that produces additional resonant modes. The FSS is constructed using an ultra‐thin microwave laminate with a thickness of 0.00076λeff calculated at the C‐band. The solid patch on the front side of the FSS unit cell is composed of an octagonal ring connected to four spiral arms while the slotted region on the rear side is complementary to the geometry on the front side. The unit cell size of the proposed FSS element is 0.087λeff × 0.087λeff. The FSS has an ultra‐low profile with at least 40% size reduction compared to the state‐of‐the‐art. The FSS element offers 11.12% (288 MHz) and 11.45% (650 MHz) at 2.45 GHz and 5.8 GHz, respectively, at x‐polarization while 5.8% (142 MHz) and 5.9% (342 MHz) bandwidth in the y‐polarization. The FSS element has a rotational symmetric structure offering enhanced polarization stability and angular independent operation for oblique incidences up to 80°. Furthermore, FSS operation is stable, which is evaluated and presented. The prototype bandpass FSS is fabricated, and the simulation results are validated in real‐time using experiments.

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Design of ultra‐thin closely spaced dual‐band bandpass frequency selective surface

Cited by 11 publications

References 10 publications

Dual‐band three‐dimensional FSS with high selectivity and small band ratio

Dual‐band three‐dimensional FSS with high selectivity and small band ratio

Dual-bandpass 3-D FSS with close band spacing based on multiple square coaxial waveguides

An Ultra‐Thin Dual‐Polarized Bandpass Frequency Selective Surface for 2.45‐/5.8‐GHz ISM Bands

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