Frequency Selective Rasorber with Low Insertion Loss and Dual-Band Absorptions Using Planar Slotline Structures

Zhang, Yixiong; Li, Zhu; Tang, Yiming; Chang, Yumei; Bo, Yaming

doi:10.1109/lawp.2018.2808221

Cited by 49 publications

(23 citation statements)

References 12 publications

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“…Stealth and communication performances can be of crucial importance in military applications, especially for the stealth radome systems . In the past, frequency‐selective absorbers were widely employed as stealth materials due to their attractive absorption characteristics . Generally, an absorber is composed of lossy and reflective layers .…”

Section: Introductionmentioning

confidence: 99%

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Frequency‐selective absorptive structure with wideband transmission using modal interaction pole

Wang

Zeng

et al. 2020

Int J RF Microw Comput Aided Eng

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A dual‐polarized frequency‐selective absorptive structure with a wide transmission band is presented in this article. The passband is achieved by employing the modal interaction pole of the lossy array, and the multiresonant operating modes are discussed. By combining with the lossless square array, the desired transmission and absorption behaviors are obtained. Due to the modal interaction pole, the current on the lossy layer is effectively reduced, and a wide passband with high transmittance is generated. The −3 dB fractional pass bandwidth is 47.8% with a minimum insertion loss of 0.17 dB. Furthermore, a wide absorption band is achieved by employing the three resonances of the lossy array, and the absorptivity is above 99% from 5.5 to 6.5 GHz. Only four resistors are loaded on the edges of the lossy array to provide the absorption performance at the stopband. Finally, a good agreement between the simulation and measurement results validates the presented design.

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Section: Introductionmentioning

confidence: 99%

“…1,2 In the past, frequency-selective absorbers were widely employed as stealth materials due to their attractive absorption characteristics. 3 Generally, an absorber is composed of lossy and reflective layers. 4 The incident power can be trapped between lossy and reflective layers, and consumed by the lossy layer.…”

Section: Introductionmentioning

confidence: 99%

Frequency‐selective absorptive structure with wideband transmission using modal interaction pole

Wang

Zeng

et al. 2020

Int J RF Microw Comput Aided Eng

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“…To reduce RCS effectively, the absorptive FSS (AFSS) radome, which the transmission band is located beside/within absorption bands, is proposed in Reference and has deeply researched in References . Often, AFSS radome is placed at the top of the antenna.…”

Section: Introductionmentioning

confidence: 99%

Design of switchable band‐notched frequency selective absorber

Guo

Chen

Zheng

et al. 2019

Int J RF Microw Comput Aided Eng

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An active band‐notched frequency selective absorber (BNFSA) with switchable notch band is proposed in this article. The BNFSA is a two‐layer structure composed of a lossy layer at the top and a ground plane at the bottom, separated by an air spacer. The element of the lossy layer is a lumped‐resistor‐loaded metallic dipole with a parallel LC resonance structure, which is realized by complementary n‐shaped resonator (CnR) inserted in the center, and PIN diode is welded at two arms of CnR. The bias circuit printed on the back of the substrate of the lossy layer connects to anode and cathode of the diode by via hole and isolates by the inductor. Simulation results show that the notch bands are located at 4.50 and 6.81 GHz when the diode sets to ON and OFF, respectively. To validate the performance of switchable BNFSA, the prototypes are fabricated and measured, reasonable agreement between simulated and measured results is obtained.

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“…Three-dimensional (3D) FSSs were also applied in the design of FSRs. By constructing absorption and transmission paths separately through lossless and lossy resonators in 3-D unit cells, several 3D FSRs were developed in [17]- [22]. Although the implementation of 3D structures is more complicated, 3D FSRs can easily achieve superior performance such as high selectivity (sharp rolloff of the pass-band) and stable filtering response under the oblique incidence.…”

Section: Introductionnmentioning

confidence: 99%

3D Band-Absorptive Frequency Selective Rasorber: Concept and Analysis

Luo

Liu

et al. 2019

IEEE Access

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This paper presents a 3D band-absorptive frequency selective rasorber (FSR). Such an FSR is absorptive within a specific band and almost transparent below the absorption band. The definition and evaluation of the band-absorptive FSR is initially provided and followed by the design concept of 3D FSR. An example is then proposed, whose unit cell is composed of 3D absorber and 3D band-stop FSS. An equivalent circuit model is established for understanding its operating principle. A prototype of the proposed 3D band-absorptive FSR is fabricated. The measured results show that it has an absorption band (|S 11 | ≤ −10 dB and |S 21 | ≤ −10 dB) from 4.21 to 6.51 GHz, with a thickness of 0.17 wavelength at 4.21 GHz. Moreover, |S 21 | is higher than −1 dB at the frequencies below 1.28 GHz. The proposed bandabsorptive FSR can be used as radomes for low-frequency antennas in military communications or spectrum monitoring systems. INDEX TERMS Frequency selective rasorber (FSR), absorptive frequency selective structure, bandabsorptive.

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Frequency Selective Rasorber with Low Insertion Loss and Dual-Band Absorptions Using Planar Slotline Structures

Cited by 49 publications

References 12 publications

Frequency‐selective absorptive structure with wideband transmission using modal interaction pole

Frequency‐selective absorptive structure with wideband transmission using modal interaction pole

Design of switchable band‐notched frequency selective absorber

3D Band-Absorptive Frequency Selective Rasorber: Concept and Analysis

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