Absorptive Frequency-Selective Transmission Structure With Square-Loop Hybrid Resonator

Huang, Hao; Shen, Zhongxiang

doi:10.1109/lawp.2017.2769093

Cited by 172 publications

(68 citation statements)

References 14 publications

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“…Nevertheless, the communication performance of antennas may be influenced by covering lossy absorbers. To meet the communication requirement of stealth radomes, transmissive stealth structures have widely been investigated …”

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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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%

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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“…However, this approach of reflecting out‐of‐band electromagnetic waves is effective only for monostatic interrogations, which may increase its bistatic RCS in some directions. To solve this problem, a new concept of frequency selective rasorber (FSR) is presented and some frequency selection rasorbers are proposed based on this . Like the traditional FSS, this new FSR ensures low insertion loss in the operating band, but the difference is that it can absorb incident electromagnetic energy instead of reflecting outside the operating band.…”

Section: Introductionmentioning

confidence: 99%

“…Its small cell size avoids the generation of grating lobes in the absorbing band and thus avoids its interference with bistatic RCS reduction. Furthermore, in order to reduce the RCS at both lower and upper frequency bands beside the transmission band, a novel idea of designing the lossy layer that connects LC circuits in parallel with the resistive elements is proposed . Considering that previous 2D FSR is relatively difficult to realize a high selectivity in conjunction with a low insertion loss within the passband and performs unstable filtering responses when illuminated by oblique incident wave, a new kind of 3D FSR composed of lossless resonators and lossy resonators has been presented .…”

Section: Introductionmentioning

confidence: 99%

A polarization‐stable frequency selective rasorber with miniaturized elements and wideband absorbing properties

Liu

Zhai

et al. 2019

Micro & Optical Tech Letters

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A polarization‐stable frequency selective rasorber (FSR) is proposed in this article, behaving as a bandpass filter at transmission bands from 2.08 GHz to 2.82 GHz, while performing as an absorber over a wide absorption band from 7.68 GHz to 21.7 GHz. The desired transmission band is obtained by a multilayer frequency selective surface (FSS) realized through interdigital patch layer and meandering inductive wire grid. Meanwhile, the wide absorption band is achieved by using the design of miniaturized lossy layer and harmonic‐suppressed operation in FSS. The symmetry and miniaturization design make the FSR perform satisfactory stability of polarizations and incident angles. Furthermore, due to its small unit‐cell dimension (0.041λ0 × 0.041λ0 × 0.106λ0, where λ0 is the free‐space wavelength at the resonant frequency), the presented FSR can effectively avoid the interference of the grating lobes on radar cross section reduction.

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Absorptive Frequency-Selective Transmission Structure With Square-Loop Hybrid Resonator

Cited by 172 publications

References 14 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

A polarization‐stable frequency selective rasorber with miniaturized elements and wideband absorbing properties

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