Absorptive Frequency-Selective Reflection and Transmission Structures

Omar, Ahmed Abdelmottaleb; Shen, Zhongxiang; Huang, Hao

doi:10.1109/tap.2017.2754463

Cited by 154 publications

(60 citation statements)

References 24 publications

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“…The prototype is set in the middle of the measurement platform. Two standard horn antennas (2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18), mounted on both ends of the measurement platform for aiming at the center of the prototype, are connected to an Agilent N5245A vector network analyzer (VNA) by using two RF cables. The measured results of the prototype with and without filled water under the normal incidence at room temperature are shown in Fig.10 (a) and (b).…”

Section: Experimental Verification and Discussionmentioning

confidence: 99%

Water-Based Reconfigurable Frequency Selective Rasorber With Thermally Tunable Absorption Band

Yan¹,

Kong

Wang³

et al. 2020

IEEE Trans. Antennas Propagat.

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In this paper, a novel water-based reconfigurable frequency selective rasorber (FSR) at microwave band is proposed, which has a thermally tunable absorption band above the transmission band. The water-based FSR consists of a bandpass type frequency selective surface (FSS) and a 3D printing container. The water substrate is filled into the sealed space constructed by the above two structures. The numerical simulation results show that the FSR can achieve absorption with high absorptivity from 8.3 to 15.2 GHz, and obtain a transmission band of 5.2 to 7.0 GHz. The minimum insertion loss of the transmission band reaches 0.72 dB at 6.14 GHz. In addition, the FSR has the reconfigurable characteristics of absorbing or reflecting electromagnetic waves by filling with water or not. The proposed water-based FSR shows its good transmission/absorption performance under different polarizations and oblique incident angles. Due to the Debye model of water, the absorption band can be adjusted by water temperature, while the passband remains stable. At last, prototype of the FSR based on water has been fabricated, and the experimental results are presented to demonstrate the validity of the proposed structure.

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Section: Experimental Verification and Discussionmentioning

confidence: 99%

Water-Based Reconfigurable Frequency Selective Rasorber With Thermally Tunable Absorption Band

Yan¹,

Kong

Wang³

et al. 2020

IEEE Trans. Antennas Propagat.

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“…Three dimensional frequency selective surfaces consisting of a two dimensional periodic array of multimode resonators, which resonate in the wave transmitting direction, were proposed [22]- [25], and they can readily achieve low insertion loss, high selectivity and stable angular incidence wave performance although the implementation of these 3-D FSSs are more complicated compared with multilayer FSSs. 3-D AFSTs, deriving from 3-D FSSs, separate the transmission and absorption propagation paths, and then attractive AFSTs with low insertion loss, easy controllable bandwidth and angular-insensitive can be obtained [26]- [29].…”

Section: Introductionmentioning

confidence: 99%

“…Another attempt is realized by employing two lossy resonators and one lossless resonator in the unit cell to produce two absorption and one transmission bands, although the lower absorption band is very narrow [27]. Then, two kinds of AFSTs with two wide absorption bands are constructed by a tailoring methodology through introducing a transmission window in an ultra-wideband absorber [28], and utilizing the intrinsic reflection band and higher-order absorption band of a wideband 3-D absorber [29].…”

Section: Introductionmentioning

confidence: 99%

Aperture Antenna Embedded Notched Parallel Plate Waveguide and Its Application to Dual-Polarized 3-D Absorptive Frequency-Selective Transmission Structure

et al. 2020

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This paper introduces an angular-insensitive dual-polarized 3-D absorptive frequency-selective transmission structure (AFST), which has a transmission window and an upper absorption band. The transmission band is produced by lossless resonators implemented using an aperture antenna embedded notched parallel plate waveguide with a metalized via hole in the center. The absorption band is obtained by lossy resonators constructed by the single resistor embedded bent metallic strips. In addition, the whole structure is constructed without backing discontinuous metallic ground plane, which overcomes the fabrication difficulty of conventional 3-D structures. Physical mechanism of the proposed AFST is explained with the aid of an equivalent circuit model, as well as current and electric field distributions. A prototype of the designed AFST is fabricated and measured, and experimental results show that a fractional transmission bandwidth of 20.5% and an upper absorption bandwidth of 28.8% with absorptivity around 90% for both TE-and TM-polarizations are achieved under oblique incident wave up to 50 •. INDEX TERMS Absorptive frequency-selective transmission structure (AFST), 3-D frequency selective structure (FSS), rasorber, RCS reduction.

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“…The insertion loss (IL) of pass-band and the fractional bandwidth (FBW) of the 10-dB-absorption band (with the reflec-tion coefficient less than −10 dB) are two criteria for evaluating FSR. In recent years, various FSRs have been widely investigated, such as the FSRs with high-frequency passband proposed in [13,14,15,16], and the FSRs with twosided absorption bands reported in [17,18,19,20,21,22,23,24,25,26]. Besides, to meet the stealth requirements of low-frequency antenna systems, several FSRs with lowfrequency pass-band were also presented in [27,28,29,30,31].…”

Section: Introductionmentioning

confidence: 99%

Design of frequency selective rasorber with high in-band transmission and wideband absorption properties

Sheng

Gao

Liu

2019

IEICE Electron. Express

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A low-frequency transmissive frequency selective rasorber (FSR) with high in-band transmission and wideband absorption characteristics is proposed and experimentally demonstrated. It comprises the top resistive sheet and the bottom bandpass FSS. For resistive sheet, the tiny strip-type parallel LC resonator composed of square spiral inductor and its two-sided capacitors is inserted between the resistor-loaded crosses to achieve lower insertion loss (IL) by cutting off the lossy path. The bandpass FSS with high selectivity consists of Jerusalem cross slot array and capacitive metallic patches. An IL of 0.3 dB is obtained at 3.55 GHz, and the 10-dB-absorption band is 5.4-13.2 GHz.

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Absorptive Frequency-Selective Reflection and Transmission Structures

Cited by 154 publications

References 24 publications

Water-Based Reconfigurable Frequency Selective Rasorber With Thermally Tunable Absorption Band

Water-Based Reconfigurable Frequency Selective Rasorber With Thermally Tunable Absorption Band

Aperture Antenna Embedded Notched Parallel Plate Waveguide and Its Application to Dual-Polarized 3-D Absorptive Frequency-Selective Transmission Structure

Design of frequency selective rasorber with high in-band transmission and wideband absorption properties

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