A Novel Miniaturized Polarization Independent Frequency Selective Surface with UWB Response

Unaldi, Sibel; Tesneli, Nigar Berna; Çimen, Sibel

doi:10.13164/re.2018.1012

Cited by 6 publications

(3 citation statements)

References 9 publications

(13 reference statements)

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“…In [29], a single layer FSS was constructed with a 10 × 10 FSS array in the dimension of 170 × 170 mm employed to achieve stop band characteristics in the UWB frequency (4.5-11.4 GHz). Similarly, a multi-layer FSS operates at UWB frequency (2.98-10.86 GHz) was reported in [30]. A multi-layer FSS-based MIMO antenna array was presented in [31].…”

Section: Introductionmentioning

confidence: 94%

Low specific absorption rate quad-port multiple-input-multiple-output limber antenna integrated with flexible frequency selective surface for WBAN applications

Govindan

Palaniswamy²,

Kanagasabai³

et al. 2023

Flex. Print. Electron.

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This paper presents the design and analysis of a multiple-input-multiple-output (MIMO) textile antenna for wireless body area network (WBAN) applications. The MIMO antenna is comprised of four identical modified rhombus-shaped monopole antenna elements backed with a frequency selective surface (FSS) to improve gain and to reduce specific absorption rate (SAR). The antenna has an impedance bandwidth (S11 ≤ -10 dB) of 8.8 GHz (2.8-11.6 GHz) and isolation of >19 dB between the resonating elements. In order to assess the MIMO antenna's flexibility, the bending analysis is performed for various bending radii. The obtained diversity metrics are: Envelope correlation coefficient (ECC) < 0.5 dB, diversity gain (DG) < 10 dB, channel capacity loss (CCL) < 0.4 bits/s/Hz, and total active reflection coefficient (TARC) < -10 dB. The antenna's performance with and without FSS is evaluated for SAR investigation. The SAR values are reduced from 6.99 Watt/Kg to 0.0273 Watt/Kg with the aid of FSS. A peak gain of 8.08 dBi and maximum efficiency of 96 % are obtained with the FSS. The designed antenna is suitable for smart textile applications due to its low SAR, high gain, and wider impedance bandwidth.

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Section: Introductionmentioning

confidence: 94%

Low specific absorption rate quad-port multiple-input-multiple-output limber antenna integrated with flexible frequency selective surface for WBAN applications

Govindan

Palaniswamy²,

Kanagasabai³

et al. 2023

Flex. Print. Electron.

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“…An FSS structure with a band‐stop performance between 3.5 and 11 GHz is presented and its unit cell occurs with a ring and a cross‐dipole placed on an Arlon AD600 substrate in Gündüz et al 10 The design was angularly stable up to 60° incident angle for both polarizations. In Unaldi et al, 11 an FSS structure with a band‐stop performance between 3.05 and 10.63 GHz is presented and its unit cell occurs with a cross‐dipole and a square ring placed on Arlon AD600 substrate.…”

Section: Introductionmentioning

confidence: 99%

An FSS structure with a band‐stop performance for UWB applications

Sondaş

2022

Micro & Optical Tech Letters

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In this paper, a frequency selective surface (FSS) structure with a band-stop performance for ultra-wideband (UWB) applications is introduced. The unit cell of the FSS structure consists of a combination of a square loop, a ring loop, and a cross dipole with four gaps. The unit cell has 0.115λ g × 0.115λ g size where λ g is the wavelength in the substrate corresponding to the minimum frequency (2.79 GHz) of the operating band. The bandwidth of the FSS design is from 2.79 to 10.81 GHz frequencies (at normal incidence and |S 21 | < −3 dB criterion) which covers all UWB bands. The introduced FSS structure has angular stability up to 80°incident angles both TM and TE polarizations due to the small size of the unit cell. The highest resonance frequency deviation is 0.08% at 80°and this value is quite low. The proposed FSS structure was fabricated and the results obtained through simulations were supported by the measurement results.

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“…A quad band switchable FSS with pin diodes operating in ISM frequency range, improves the isolation between indoor wireless devices [10]. A miniaturized dual layer UWB FSS with dielectrics AD300A and AD600 separated by three parts of metallic elements consisting of rotated cross dipoles has 60° angular stability [11]. The low-profile dual layer FSS reflector [12] covers the UWB band from 3.5 to 11.45 GHz.…”

Section: Introductionmentioning

confidence: 99%

Modelling of a Polarization Insensitive UWB FSS with Band Stop Response

Abdulkareem¹,

Gopalakrishnan²

2021

RADIOENGINEERING

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This paper presents a compact ultra-wideband frequency selective surface (FSS) with band stop response. The proposed single layer FSS is printed on FR-4 substrate with a unit cell periodicity of 0.138λ 0 × 0.138λ 0, corresponding to its lowest operating frequency. The developed FSS exhibits stable response for plane waves with normal and oblique incidence with TE and TM polarization for angles varying from 0° to 60°. The FSS offers -10dB bandwidth of 141 % covering the entire ultra-wideband frequency range from 2.39 GHz to 13.67 GHz. The structural parameters are optimized, and an equivalent circuit is modelled to analyze the performance of FSS. The simulated results are validated by the measured values.

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A Novel Miniaturized Polarization Independent Frequency Selective Surface with UWB Response

Cited by 6 publications

References 9 publications

Low specific absorption rate quad-port multiple-input-multiple-output limber antenna integrated with flexible frequency selective surface for WBAN applications

Low specific absorption rate quad-port multiple-input-multiple-output limber antenna integrated with flexible frequency selective surface for WBAN applications

An FSS structure with a band‐stop performance for UWB applications

Modelling of a Polarization Insensitive UWB FSS with Band Stop Response

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