A design of broadband bandpass frequency selective surface

Li, Meiling; Hong, Mudan; Yang, Qihao; Zheng, Qi; Yang, Xuexia; Yi, Zixuan

doi:10.1002/mop.33331

Cited by 7 publications

(5 citation statements)

References 21 publications

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“…There are also low‐profile FSS designs available. For instance, an FSS is designed using a multilayer coupling structure, 17 characterized by a slim profile and a flat passband. However, the out‐of‐band suppression of this structure is not optimal.…”

Section: Introductionmentioning

confidence: 99%

Low‐profile frequency selective surface with quasi‐elliptical bandpass response using antenna‐filter‐antenna approach

Bai,

Chen,

et al. 2024

Micro & Optical Tech Letters

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An antenna‐filter‐antenna (AFA) based frequency selective surface (FSS) with excellent spatial filtering performance is proposed. This FSS design incorporates two back‐to‐back microstrip patch antennas, which not only ensures a high roll‐off rate at the passband edge and excellent flatness within the passband, but also achieves an ultra‐low profile. Significantly, the upper and lower band edges demonstrate a substantial drop from −3 to −10 dB within the 0.006 and 0.02 GHz ranges, respectively, resulting in a sharp roll‐off skirt. Furthermore, the frequency of radiation null can be controlled by manipulating the length of the quarter‐wavelength open‐ended stub, thereby possessing exceptional out‐of‐band suppression. A prototype of the proposed FSS with low profile is fabricated and measured. The simulations and measurements of the AFA‐based FSS show that a quasi‐elliptical bandpass filtering response with superior performance is achieved.

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Section: Introductionmentioning

confidence: 99%

Low‐profile frequency selective surface with quasi‐elliptical bandpass response using antenna‐filter‐antenna approach

Bai,

Chen,

et al. 2024

Micro & Optical Tech Letters

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“…FSS functions as a spatial filter for electromagnetic waves and provides selectivity in frequency, angle of incidence and polarization of the incident waves [1]. The frequency selective characteristics of FSS allow it to be used in a wide range of commercial and military applications [2][3][4][5], EM shields (band stop/band pass filters) [6][7][8][9][10][11][12], radome design [13][14][15], RCS reduction [16,17], electromagnetic band gap materials [18,19] and absorbers [20][21][22]. Nevertheless, the FSS is widely employed in many applications.…”

Section: Introductionmentioning

confidence: 99%

Design of 2.5-D miniaturized frequency selective surface with enhanced oblique stability

Ul Abidin,

Cao,

Shah

et al. 2024

Phys. Scr.

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This paper presents a miniaturized 2.5-D frequency selective surface (FSS) that exhibits a band stop response at frequency of 1.5 GHz. In the unit cell, the meander patterns on both sides of the substrate are connected in series by four vias. Moreover, the meandered pattern in each quadrant is also connected with one of the meander patterns of the adjacent unit cell. In this manner, a 2.5-D closed loop is created with large perimeter. The enlarged perimeter amplifies the effective inductance and leads to a decrease in both the resonant frequency and the dimensions of unit cell. Subsequently, the proposed FSS demonstrates excellent miniaturization with an overall size of 0.038 λ0 × 0.038 λ0. Moreover, the frequency response is highly stable up to 86° for both TE and TM polarization. The resonance mechanism of the designed FSS is explicated through distribution of surface current and electric field. The testing board of the proposed FSS has been fabricated for the verification of the design. The measured frequency response of the prototype are congruent with the simulation results. The distinguished features of the constructed structure are enhanced angular stability, miniaturized unit cell, low profile, simple geometry and easy fabrication.

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“…However, there is no high‐frequency selectivity of performance. In Li et al, 14 the FSS achieves a broadband and good angle stability. However, the FSS has poor performance in selectivity.…”

Section: Introductionmentioning

confidence: 99%

Wide‐angle band‐pass FSS with high‐frequency selectivity based on SIW cavity technology

Li,

Zhao,

Liu

et al. 2024

Micro & Optical Tech Letters

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This work proposes and investigates a wide‐angle band‐pass frequency selective surface (FSS) with two sharp sidebands. The presented FSS element is made up of three metallic layers and two substrate layers in between, which are surrounded by a substrate‐integrated waveguide (SIW) cavity. The top metallic layer is identical to the bottom layer, composed of a square patch etched with a hexagonal groove, while the middle layer is a similar patch but with rectangular notch edges. This structure achieves a second‐order band‐pass response with highly frequency selectivity on either side of the passband. At the same time, this FSS demonstrates excellent stability for both transverse electric and transverse magnetic polarizations with incident angles between 0° and 60°. The electric current and field distributions are demonstrated for deep analysis. Furthermore, an equivalent circuit model is developed to further understand the operating mechanisms. To verify the validity of the design, we construct a prototype of the SIW‐based FSS (SIW‐FSS) and measured it. There is a fair degree of agreement between the measured and simulated results. Finally, we loaded it onto the horn antenna and tested its application in filtering antennas.

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A design of broadband bandpass frequency selective surface

Cited by 7 publications

References 21 publications

Low‐profile frequency selective surface with quasi‐elliptical bandpass response using antenna‐filter‐antenna approach

Low‐profile frequency selective surface with quasi‐elliptical bandpass response using antenna‐filter‐antenna approach

Design of 2.5-D miniaturized frequency selective surface with enhanced oblique stability

Wide‐angle band‐pass FSS with high‐frequency selectivity based on SIW cavity technology

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