An Ultraminiaturized Frequency Selective Surface With Angular and Polarization Stability

Ashvanth, Balu; Partibane, Bactavatchalame; Alsath, M. Gulam Nabi

doi:10.1109/lawp.2021.3119984

Cited by 21 publications

(15 citation statements)

References 15 publications

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“…In addition, to satisfy the plane wave requirement as closely as feasible, it is necessary to first determine the distance between the transmitting antenna and the proposed FSS. Traditionally, the FSS is positioned in the far-field of the transmitting antenna [15], [19], [22]. To prevent undesirable edge effects, this will necessitate the fabrication of an impractically large FSS radome.…”

Section: A Measurements Resultsmentioning

confidence: 99%

“…Consequently, miniaturization of the slot is required to guarantee that this all-metallic slot-based FSS works adequately for oblique angles. In conventional substrate-based FSS, the unit cell dimension may be reduced by using a convoluted or meander slot [14], [15], [16]. Hence, this miniaturization approach may, in theory, also be applicable to achieving all-metallic FSS miniaturization.…”

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confidence: 99%

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Miniaturization of a Fully Metallic Bandpass Frequency Selective Surface for Millimeter-Wave Band Applications

Yong

Glazunov

2023

IEEE Trans. Electromagn. Compat.

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This article presents a miniaturized all-metallic bandpass frequency selective surface (FSS) for millimeter-wave (mmWave) applications. The designed FSS is realized as a slot-type element that can be easily incorporated into all-metallic device architectures. The miniaturization is achieved by a convoluted or meander slot structure, i.e., a miniaturization technique borrowed from conventional substrate-based FSS design. It is demonstrated that the proposed FSS element provides a stable and wide bandpass performance from 24.9 to 31.4 GHz for both the transverse electric (TE) and the transverse magnetic (TM) polarizations at the broadside direction (θ = 0 • ). Adequate performance is maintained at oblique incidence angles up to θ = ± 45 • . A 25 × 25-elements FSS array prototype has been manufactured using the cost-effective chemical etching technique and experimentally characterized utilizing a free-space measurement setup. The results demonstrate a remarkably good correlation between simulations and measurements. Hence, the proposed miniaturized FSS represents an excellent potential to realize an all-metallic FSS with low insertion loss, low profile, and wideband performance at low fabrication costs for mmWave applications.

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Section: A Measurements Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Miniaturization of a Fully Metallic Bandpass Frequency Selective Surface for Millimeter-Wave Band Applications

Yong

Glazunov

2023

IEEE Trans. Electromagn. Compat.

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“…The Ka ‐band miniaturized FSS in Chou and Ke 15 and the FSS for shielding 5G frequencies (2.6 GHz) reported in Qu et al 16 signify the importance of FSS for satellite communications and system‐level packaging, respectively. A few other interesting design solutions to obtain miniaturization in the FSS unit cells are described in other studies 17–22 …”

Section: Introductionmentioning

confidence: 99%

“…A few other interesting design solutions to obtain miniaturization in the FSS unit cells are described in other studies. [17][18][19][20][21][22] This paper reports the design of a novel ultra-miniaturized FSS with polarization-insensitive and angularly stable characteristics. The proposed FSS element has the smallest footprint of 0.026λ o Â 0.026λ o with a minimum via structures unlike the FSS screens reported in other studies.…”

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confidence: 99%

Miniaturized frequency‐selective surface with reduced number of metallic vias for electromagnetic shielding

Andi,

G. P.

2023

Int J Communication

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SummaryA miniaturized frequency‐selective surface (FSS) for radio frequency (RF) filtering applications is reported in this paper. The proposed FSS is designed to operate with band stop property at 1.57 GHz. The FSS element is developed using highly convoluted lines running on either side of the substrate interconnected using via lines. This specific arrangement increases the electrical length of the resonator without increasing the physical size. Furthermore, the stability towards polarization variation and independence to different angles of incidence are other major concerns in the design of FSS. The FSS unit cell has rotational symmetry thereby providing polarization‐independent operation. The angular independence is tested for various incidence angles, and the results are presented. The performance of the FSS is validated in real time, and the results are presented. The maximum realized transmission loss is 27 dB at 1.57 GHz, and the attenuation bandwidth with reference 10 dB shielding level is estimated to be 400 MHz centered around 1.57 GHz. The convolution technique along with shorting vias has offered this extreme miniaturization ranging from 7% to 95.7% with reference to most of the FSS reported for L‐band services such as radio, telecommunications, military, and aircraft surveillance.

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“…On the other hand, the electrical size of the FSS can be reduced by using an inward-convoluted loop structure with the metallic strips, which can largely enhance the mutual coupling between metals [21]. Several closed-loop FSSs with fractal structures have been proposed in order to maximize the use of the dielectric layer space [22,23]. In addition, it is difcult to reduce the miniaturization size and maintain angular stability to more than 85 °.…”

Section: Introductionmentioning

confidence: 99%

Design of Miniaturized FSS with High Angular Stability Utilizing a Novel Closed Loop

Zhang

Suo

et al. 2023

International Journal of Antennas and Propagation

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In this paper, we propose a miniaturized 2.5-dimensional (2.5D) frequency selective surface (FSS) structure with high angular stability. A novel closed-loop FSS is formed by combining the Jerusalem cross (JC) structure with the conventional rectangular closed loop using vias. This approach further enhances the coupling performance of the FSS and thus achieves miniaturized design. The unit cell size of the proposed FSS is 0.019λ0 × 0.019λ0 at the resonant frequency, and the metal is printed on a dielectric substrate with a thickness of 0.003λ0. The proposed FSS has a resonant frequency of 850 MHz and exhibits band-stop characteristics. It is insensitive to the incident angle with a good operating performance in both the TE and TM wave modes. Therefore, it can be well used as an electromagnetic shield for the GSM 850 band. In order to facilitate the rapid analysis and design of the FSS, the equivalent circuit model is further analyzed and established, and values of the corresponding lumped components are derived. In addition, a prototype FSS is fabricated using printed circuit board technology and is tested in a microwave anechoic chamber. The full-wave analysis simulation, equivalent circuit model simulation, and practical measurement results reflect a high level of consistency.

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An Ultraminiaturized Frequency Selective Surface With Angular and Polarization Stability

Cited by 21 publications

References 15 publications

Miniaturization of a Fully Metallic Bandpass Frequency Selective Surface for Millimeter-Wave Band Applications

Miniaturization of a Fully Metallic Bandpass Frequency Selective Surface for Millimeter-Wave Band Applications

Miniaturized frequency‐selective surface with reduced number of metallic vias for electromagnetic shielding

Design of Miniaturized FSS with High Angular Stability Utilizing a Novel Closed Loop

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