Frequency-Selective Rasorber With Interabsorption Band Transparent Window and Interdigital Resonator

Chen, Qiang; Sang, Di; Guo, Min; Fu, Yunqi

doi:10.1109/tap.2018.2835671

Cited by 239 publications

(102 citation statements)

References 25 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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“…According to References and , Z R needs to meet general absorption condition (GAC) at the absorption bands, and be infinite at notch band. The series RLC is mainly used to meet the GAC.…”

Section: Equivalent Circuit Analysis Of Bnfsamentioning

confidence: 99%

“…The lossy layer should be transparent at the notch band and meets the absorption condition beside the notch band. According to References and , the equivalent impedance of the lossy layer should be infinite (ie, impedance pole) to obtain a transmission closely to 100% whether the PIN diode sets to ON or OFF, and meet the general absorption condition (GAC) to achieve wide absorption band beside the notch band. In short, the key to realize switchable BNFSA lies on the design of the lossy layer.…”

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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“…In 2014, Shen et al combined the absorption FSS structure loaded with the lumped element with the transmissive FSS structure to form two strong absorption peaks on both sides of the pass band while satisfying the broadband wave‐transmission effect . In recent years, a variety of absorption/transport integration FSS has been proposed . Compared with the FSS mentioned earlier, the purpose of this article is to achieve the design of low‐frequency bandpass and high‐frequency band absorption, and to make it have good performance.…”

Section: Introductionmentioning

confidence: 99%

“…8 In recent years, a variety of absorption/transport integration FSS has been proposed. 9,10 Compared with the FSS mentioned earlier, the purpose of this article is to achieve the design of low-frequency bandpass and high-frequency band absorption, and to make it have good performance. The miniaturized frequency selective surface (MFSS) can absorb out-of-band incident waves on the basis of ensuring good transmission, dramatically reduce the reflections from vehicle surface so as to achieve good RCS reduction.…”

Section: Introductionmentioning

confidence: 99%

A new miniaturized frequency selective surface designed for Ku‐band absorption and low‐frequency bandpass

Zhai

Liu

et al. 2019

Micro & Optical Tech Letters

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This article designs a new miniaturized frequency selective surface (FSS) for Ku‐band absorption and low‐frequency bandpass. The miniaturized frequency selective surface (MFSS) consists of a periodically arranged unit structure, each unit consisting of an upper three‐dimensional absorbing structure and a bottom two‐dimensional FSS. The upper layer is a bent‐closed structure that mainly provides over 90% absorption in the Ku‐band. The underlying structure is a FSS in which it acts as a bandpass filter in the transmission band (2.9‐3.9 GHz). The unit‐cell dimension of the MFSS is 0.091λ0 × 0.091λ0 × 0.054λ0 (λ0 is the free‐space wavelength at the resonant frequency). Due to its small size, MFSS can effectively avoid grating lobes and maintain good angular stability. Finally, the actual measurement verified that the MFSS has good characteristics.

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Frequency-Selective Rasorber With Interabsorption Band Transparent Window and Interdigital Resonator

Cited by 239 publications

References 25 publications

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

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

Design of switchable band‐notched frequency selective absorber

A new miniaturized frequency selective surface designed for Ku‐band absorption and low‐frequency bandpass

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