Absorptive/Transmissive Frequency Selective Surface With Wide Absorption Band

An ultrathin and simple frequency-selective rasorber (FSR) with a passband located within a wide absorption band is proposed. The ultrawide absorption band is obtained by employing commercial magnetic materials in the absorption channel and the passband is realized using epsilon-near-zero (ENZ) tunneling waveguides. The attractively ultrathin and simple feature is achieved by utilizing tunneling effect at the cutoff frequency of metallic waveguides with arbitrary length, permitting the overall thickness shrink into to the same as that of the absorber.

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Ultrathin and Simple Frequency Selective Rasorber Based on Ferrite Absorber with Embedded Epsilon-Near-Zero Tunneling Channels

10.36227/techrxiv.17088578 ◽

2021 ◽

Author(s):

Shuomin Zhong ◽

Jiaqi Feng ◽

Zi-Wei Zheng ◽

Yungui Ma

Keyword(s):

Absorption Band ◽

Magnetic Materials ◽

Cutoff Frequency ◽

Tunneling Effect ◽

Arbitrary Length ◽

Wide Absorption Band ◽

Frequency Selective ◽

Absorption Channel ◽

Epsilon Near Zero

An ultrathin and simple frequency-selective rasorber (FSR) with a passband located within a wide absorption band is proposed. The ultrawide absorption band is obtained by employing commercial magnetic materials in the absorption channel and the passband is realized using epsilon-near-zero (ENZ) tunneling waveguides. The attractively ultrathin and simple feature is achieved by utilizing tunneling effect at the cutoff frequency of metallic waveguides with arbitrary length, permitting the overall thickness shrink into to the same as that of the absorber.

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A miniaturized frequency selective rasorber with high selectivity passband and wideband absorption properties

EPJ Applied Metamaterials ◽

10.1051/epjam/2020017 ◽

2021 ◽

Vol 8 ◽

pp. 5

Author(s):

Yanjie Wu ◽

Jie Xiong ◽

Feng Deng ◽

Hai Lin ◽

You Wang

Keyword(s):

Absorption Band ◽

High Selectivity ◽

Incident Angle ◽

Frequency Selective Surface ◽

Absorption Properties ◽

Small Unit ◽

Transmission Frequency ◽

Structure Of Metal ◽

Angle Stability ◽

Frequency Selective

A miniaturized frequency selective rasorber (FSR) with high selectivity passband and wideband absorption properties is presented. Its performance as an absorber over a wide absorption band from 8.08 to 18.08 GHz through the structure of metal incurved square loop structure loaded resistors. The frequency selective surface (FSS) using Jerusalem cross array and metallic patch realizes the transmission frequency band from 2.7 to 3.52 GHz. And the insertion loss (IL) is 0.37 dB at 3.08 GHz. The symmetry and miniaturized elements design enable the proposed FSR to achieve satisfactory incident angle stability. Its small unit size effectively avoids the generation of grating lobes in the absorption band and the interference to Radar Cross Section (RCS) reduction.

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