A Miniaturized Absorber Frequency Selective Surface With Good Angular Stability

Xue, Kun; Zhai, Huiqing; Li, Sucheng; Shang, Yuanfang

doi:10.1109/lawp.2019.2951734

Cited by 31 publications

(7 citation statements)

References 10 publications

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“…Moreover, FSSs are subject to frequency selective characteristics, meaning they have a non-similar behaviour over frequency, which give them the ability to serve multiple purposes. They can be employed in antenna engineering as space filters, polarisers, and absorbers [19][20][21]. Therefore, they have various uses, including for radio telecommunication systems and radar cross-section (RCS) [22,23].…”

Section: Introductionmentioning

confidence: 99%

High Gain of UWB Planar Antenna Utilising FSS Reflector for UWB Applications

Al-Gburi¹,

Ibrahim²,

Zakaria³

et al. 2022

Computers, Materials &Amp; Continua

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In this paper, a high gain and directional coplanar waveguide (CPW)fed ultra-wideband (UWB) planar antenna with a new frequency selective surface (FSS) unit cells design is proposed for UWB applications. The proposed UWB antenna was designed based on the Mercedes artistic-shaped planar (MAP) antenna. The antenna consisted of a circular ring embedded with three straight legs for antenna impedance bandwidth improvement. The modelled FSS used the integration of a two parallel conductive metallic patch with a circular loop structure. The FSS provided a UWB stopband filter response covering a bandwidth of 10.5 GHz, for frequencies from 2.2 to 12.7 GHz. The proposed FSS had a compact physical dimension of 5 mm × 5 mm × 1.6 mm, with a printed array of 19 × 19 FSS unit cells. The FSS unit cells were printed on only one side of the dielectric FR4 substrate and placed as a sandwich between the antenna and the reflector ground plane. An equivalent circuit configuration (ECC) was used to verify the FSS unit cell structure's performance. The simulated results indicated that the UWB MAP antenna and FSS reflector provided a fractional bandwidth of 136% and a high gain of 11.5 dB at 8.5 GHz with an acceptable radiation efficiency of 89%. Furthermore, the gain was improved across the operating band and kept between 8.3 and 11.5 dB. The proposed antenna was in good agreement between theoretical and experimental results and offered a wide enough bandwidth for UWB and vehicle applications.

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Section: Introductionmentioning

confidence: 99%

High Gain of UWB Planar Antenna Utilising FSS Reflector for UWB Applications

Al-Gburi¹,

Ibrahim²,

Zakaria³

et al. 2022

Computers, Materials &Amp; Continua

View full text Add to dashboard Cite

show abstract

“…17 In the last 10 years, some designs similar to ATFSS have been proposed. [18][19][20][21][22][23][24] For example, Hang et al designed a novel FSS based on absorbing materials loaded with resistive film in 18 and an ATFSS based on magnetic materials in. 19 But these special lossy materials brought a high insertion loss.…”

Section: Introductionmentioning

confidence: 99%

A miniaturized transmission/absorption integrated frequency selection surface with ultra‐wide absorption band

Wang

Chen

et al. 2022

Int J RF Mic Comp-Aid Eng

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In this paper, a miniaturized integrated frequency selective surface (FSS) is proposed. It is composed of two parts: the band‐stop FSS and band‐pass FSS. Through introducing six capacitors between the hexagonal gap of band‐pass FSS, a miniaturized dimension of 0.07λ0 × 0.07λ0 × 0.036λ0 (λ0 is the wavelength of the transmission band in free space) is achieved. As a result, the presented FSS effectively avoids grating lobes and remains stable when the incident angle changes. In addition, by coupling between the band‐stop and band‐pass FSSs, the ultra‐wide‐band absorption is realized. The results show that the insertion loss at 2.2 GHz is only 0.6 dB and the bandwidth with the absorptivity larger than 90% is 12.6 GHz (6.8–19.4 GHz). Besides, the integrated FSS has good polarization and angular stability.

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“…Genetic algorithm‐based optimized coding FSS 12 is also explored to reduce the RCS of an MSA. A 3D absorptive surface 13 integrated with a 2D FSS comprising resistive film on an elliptic structure exhibits absorption with band‐pass operation. Band‐stop FSS is employed as a ground for RCS reduction of a reflect array antenna, 14 a dipole array antenna, 15 MSA, 16 and MIMO antenna 17 .…”

Section: Introductionmentioning

confidence: 99%

Hybrid frequency selective surface phase cancelation structure based broadband switchable radar cross section reduction

Das

Mandal

2021

Int J RF Microw Comput Aided Eng

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In this paper, a switchable radar cross section (RCS) reduction between the two broadbands' (1‐7 GHz and 4‐10 GHz) has been achieved by just considering the integration of hybrid frequency selective surface (FSS) based phase cancelation structure (PCS) with a modified ground square patch antenna operating at 2.4 GHz. The full metallic ground plane of the conventional microstrip antenna (MSA) is replaced by a 2 × 2 array of band‐stop FSS having the same frequency as that of the MSA. This ground plane modification helps to increase the maximum out‐of‐band RCS reduction from 16.4 dB to 20 dB. The ground modified MSA without any PCS exhibits both in‐band and out‐of‐band maximum RCS reduction of 20 dB over a wideband (1‐7 GHz). A new approach is adopted to form the PCS. It is formed by placing two non‐overlapping hybrid FSSs at different heights above the MSA. The MSA with FSS based ground plane along with the hybrid FSS based PCS exhibits good monostatic and bistatic RCS reduction across 4 to 10 GHz without affecting the radiation characteristics of the conventional MSA. The measured results show a close resemblance to the simulated ones.

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A Miniaturized Absorber Frequency Selective Surface With Good Angular Stability

Cited by 31 publications

References 10 publications

High Gain of UWB Planar Antenna Utilising FSS Reflector for UWB Applications

High Gain of UWB Planar Antenna Utilising FSS Reflector for UWB Applications

A miniaturized transmission/absorption integrated frequency selection surface with ultra‐wide absorption band

Hybrid frequency selective surface phase cancelation structure based broadband switchable radar cross section reduction

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