Development of a Low Radar Cross Section Antenna With Band-Notched Absorber

Mei, Peng; Lin, Xian Qi; Yu, Jia; Boukarkar, Abdelheq; Zhang, Peng Cheng; Yang, Zi Qiang

doi:10.1109/tap.2017.2780903

Cited by 73 publications

(46 citation statements)

References 20 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%

“…FSSs can be regarded as a spatial filter which performing a bandpass/bandstop response for electromagnetic wave, and have been widely used as radome, reflectors, and substrates of antennas. The FSSs with bandpass performance are employed in a radome design to suppress mutual interference, enhance radiation performance or reduce the Radar Cross Section (RCS) [2][3][4]. But such radomes based on FSSs usually reflect the out-of-band signals and result in lager RCSs in other directions, so they can barely reduce the mono-static RCS.…”

Section: Introductionmentioning

confidence: 99%

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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%

Section: Introductionmentioning

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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“…While outside f AT , the incoming wave is absorbed with few reflection, achieving effective RCS reduction at f AB. Several designs have been presented to design band‐reflective absorbers. In Reference , a three‐dimensional (3‐D) FSA presented a wide absorption band with a reflective‐band in the middle.…”

Section: Introductionmentioning

confidence: 99%

“…However, due to the 3‐D structure, the absorber has a large thickness. In References 6 and 8, two‐dimensional FSAs also presented a high‐selective reflection band within an absorption band. The two absorbers are both proposed based on two‐layered structures.…”

Section: Introductionmentioning

confidence: 99%

Wideband frequency selective absorber with high‐selective reflective‐band for RCS reduction applications

Han

2020

Micro & Optical Tech Letters

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This article presents a wideband frequency selective absorber with a high selective reflective‐band for RCS reduction application. The proposed design consists of three metallic layers. With lossy resonance of the resistors‐loaded folded loop at the front layer, wide absorption performance is obtained. Then two independently lossless resonances are employed to introducing a flexible and high selective reflective‐band with full reflectance into the absorption band. The resultant absorbers have the thickness of only ~0.076 λL at the lowest operating frequencies and exhibit a whole operating bands of 126.3%. Two absorption band with bandwidth of 60.3% and 44.5% have been achieved. A prototype of the proposed structure has been fabricated, whose measured results show reasonable agreement with the simulated responses under normal incidence.

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“…To realize low-RCS performance and ensure antennaradiation performance, band-notched frequency selective absorber (BNFSA) co-designed with a dipole antenna is proposed. 19 The BNFSA, which the reflection/notch band is located between two absorption bands, is utilized as the ground plane/reflector at the notch band. The lossy layer of the BNFSA is nearly transparent at notch band, enabling that the space between the lossy layer and ground plane can also be utilized.…”

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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Development of a Low Radar Cross Section Antenna With Band-Notched Absorber

Cited by 73 publications

References 20 publications

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

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

Wideband frequency selective absorber with high‐selective reflective‐band for RCS reduction applications

Design of switchable band‐notched frequency selective absorber

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