Design of a Tunable Polarization-Insensitive Absorber for L and S Bands Using Active Frequency-Selective Surface

Yang, Xiaoqing; Chen, Huijie; Luo, Jiefang; Su, Piqiang; Wu, Shiyue; Zhou, Jie; Zhang, Jingyu; Xie, Yi Min; Zhu, Zefei; Yuan, Jianping

doi:10.1007/s11664-019-07807-1

Cited by 7 publications

(4 citation statements)

References 21 publications

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“…Therefore, additional degrees of freedom must be introduced for easy adjustment to meet the requirements of different application scenarios. Subsequently, various nonlinear lumped elements incorporated into MSAs have been proposed to achieve dynamic tuning, [ 18–23 ] power protection, [ 24,25 ] and other characteristics. [ 26 , 27 ]…”

Section: Introductionmentioning

confidence: 99%

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Design of a Dual‐Band Waveform‐Selective Metasurface Absorber Based on the Combination of Two Resonator Structures Loaded with Nonlinear Circuits

Qian,

Cheng,

Luo

et al. 2024

Advcd Theory and Sims

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In this paper, a design scheme for a dual‐band waveform‐selective metasurface absorber (MSA) is presented based on the combination of two metal resonator structures loaded with nonlinear circuits. Dual‐band MSAs with four different configurations are constructed by loading capacitor/inductor‐based nonlinear circuits into the gaps of two square‐patch (SP) and two square‐ring (SR) resonators, all of which can achieve selective absorption of short pulses and continuous waves (CWs) at two frequencies independently. As a typical example, the dual‐band MSA with the SP resonator loaded with the inductor‐based nonlinear circuit and the SR resonator loaded with the capacitor‐based nonlinear circuit is systematically studied. First, the selective absorption performance of the dual‐band MSA for CWs and pulses under different input powers is demonstrated. Second, the selective absorption properties of the dual‐band MSA for pulses with different pulse widths are studied. Third, the waveform‐selective absorption characteristics of the dual‐band MSA for oblique TE and TM waves are also illustrated. Finally, the influence of circuit component parameters on the selective absorption properties of pulses and CWs is systematically studied. The proposed dual‐band MSAs have potential application areas such as antenna design, wireless communications, and electromagnetic compatibility.

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Section: Introductionmentioning

confidence: 99%

“…Currently, control over the power, operating frequency, or reconfigurable performance can be achieved by incorporating nonlinear elements such as PIN diodes or varactor diodes into the resonator structure of MSs. [ 20–29 ] For instance, Zhou et al. designed an energy‐selective surface by integrating PIN diodes.…”

Section: Introductionmentioning

confidence: 99%

Design of a Dual‐Band Waveform‐Selective Metasurface Absorber Based on the Combination of Two Resonator Structures Loaded with Nonlinear Circuits

Qian,

Cheng,

Luo

et al. 2024

Advcd Theory and Sims

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show abstract

“…The advent of reconfigurable technology introduces a novel approach for broadening the operational bandwidth of MMAs [24]. By incorporating adjustable components or alternative materials within the structure, the operational frequency band of the absorber can be dynamically modified as required [25][26][27][28][29]. Consequently, broadband operation can be attained without augmenting the profile height, ensuring an exceptionally high absorption rate at each frequency point.…”

Section: Introductionmentioning

confidence: 99%

Ultra-thin wideband frequency tunable metamaterial absorber and its application for antenna radar cross section reduction

Luo,

Zheng,

Wang

et al. 2024

Phys. Scr.

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A metamaterial absorber (MMA) with broadband and efficient absorption performance based on ultra-thin dielectric layer is proposed. In this unique configuration, the absorption frequency of the MMA can be continuously and dynamically tuned across a wide frequency range by manipulating the reverse voltage of the central varactor diode. From both the equivalent circuit and field distribution perspectives, we analyze the mechanisms behind broadband tuning and superior absorption. Simulation and experimental results demonstrate that the absorption peak of MMA can be continuously tuned over a range of 5.16-8.16 GHz, with the absorption rate consistently exceeding 90%, and the thickness is only 0.5 mm. Integrating MMA array with a microstrip patch antenna in a suitable manner can dynamically mitigates the radar cross section (RCS) within the associated frequency range, with virtually negligible impact on the antenna's radiation performance.

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“…Two of the most representative lumped elements used in the tunable absorbers are PIN diodes and varactors. The former is widely used to manipulate the operating modes [25][26][27][28][29][30], absorption efficiency [31], and frequency bandwidth [32], while the latter is extensively applied in frequency tuning [33,34]. By changing the bias voltage of the varactors, the surface impedance of the absorber varies with the capacitance, which results in the tunable resonant frequency.…”

Section: Introductionmentioning

confidence: 99%

Ultrawideband lightweight absorber based on composite strategy with active control of absorption in the UHF band

Zhao

Jiang

Yang

et al. 2023

J. Phys. D: Appl. Phys.

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In this paper, a composite strategy has been developed to achieve continuous absorption coverage from the ultrahigh-frequency (UHF) band up to the Ku band. Based on this strategy, an ultrawideband (UWB) lightweight composite metamaterial absorber is fabricated and measured. The composite absorber comprises two cascaded parts operating in separated frequency bands. First, we design a polarization-insensitive tunable absorber in the UHF band based on the equivalent circuit model (ECM). The measured results indicate that the tunable UHF absorber obtains a tunable -10 dB reflection coefficient from 0.88 to 1.48 GHz. Furthermore, a lightweight 3D absorber is applied to cascade with the tunable UHF absorber to constitute a UWB composite absorber. The composite absorber achieves an ultrawideband absorption ranging from 0.78 to 18 GHz with a reflection coefficient below -10 dB. The overall composite structure is extremely lightweight with a surface density below 0.2897 g/cm2. This composite absorber also exhibits good angular stability, low profile, and polarization insensitiveness. We think this work is of great application potential for military and civilian applications.

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Design of a Tunable Polarization-Insensitive Absorber for L and S Bands Using Active Frequency-Selective Surface

Cited by 7 publications

References 21 publications

Design of a Dual‐Band Waveform‐Selective Metasurface Absorber Based on the Combination of Two Resonator Structures Loaded with Nonlinear Circuits

Design of a Dual‐Band Waveform‐Selective Metasurface Absorber Based on the Combination of Two Resonator Structures Loaded with Nonlinear Circuits

Ultra-thin wideband frequency tunable metamaterial absorber and its application for antenna radar cross section reduction

Ultrawideband lightweight absorber based on composite strategy with active control of absorption in the UHF band

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