A Wideband Multifunctional Absorber/Reflector With Polarization-Insensitive Performance

A switchable polarisation conversion/in-phase reflection metasurface (PCIPR-MS) based on a Pin diode is proposed in this study. By changing the working state of the Pin diode, the PCIPR-MS can be used as a polarisation conversion metasurface (PCM) and an artificial magnetic conductor (AMC), respectively. Furthermore, the designed PCIPR-MS can be arranged into a checkerboard surface to integrate with the antenna, which means that the PCIPR-MS can be flexibly switched to control the radiation and scattering characteristics of the antenna in a time-sharing manner. The simulation results show that the 3-dB axial ratio (AR) bandwidth is 4.31 to 6.14 GHz (35%) with the application of the AMC as the metal ground plane of the antenna in the radiation state, and the right-hand circularly polarised (RHCP) gain is enhanced by more than 1.5 dB from 4.65 to 5.80 GHz in a low-profile compared with the reference antennas. By using the PCM, phase cancelation is achieved in the scattering state of the antenna to realise the low-RCS characteristics. K E Y W O R D S antennas, electromagnetic metamaterials, switching functionsThis is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Absorber/Reflector Four Yes Absorber: 0:343λ L � 0:343λ L � 0:012λ L [13] Absorber/Reflector Eight Yes Absorber:…”

Section: Designunclassified

A switchable polarisation conversion/in‐phase reflection metasurface and its application

Zhang

Jiang

2021

IET Microwaves Antenna & Prop

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“…Therefore, metasurfaces with switchable or tunable performances have gradually emerged as a new research hotspot. Many switchable metasurfaces are designed to tune the reflection amplitude, 15 frequency, 16 and polarization 17 of the EM waves. In addition, the demand to modulate the reflection phase has become increasingly important [18][19][20][21][22][23][24] because a phase-modulated metasurface (PMM) can effectively control the scattering beam and its distribution in the time domain.…”

Section: Introductionmentioning

confidence: 99%

Design of a switchable phase‐modulated metasurface with wide modulation bandwidth in S band

Guo

Chen

Liu

et al. 2022

Int J RF Mic Comp-Aid Eng

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This article presents a switchable phase‐modulated metasurface (PMM) whose reflection phase can be modulated between two states using PIN diodes. The PMM is composed of a switchable surface loaded with four PIN diodes in each unit cell, as well as a ground plane and an air spacer. The reflection phase can be modulated when the PIN diodes are switched between two states (ON and OFF). Theoretical analysis indicates that the phase‐modulation bandwidth is determined by the thickness of the PMM. The phase‐modulation bandwidth with a phase difference of 180 ± 37° achieves 2.6–4.25 GHz and a fractional bandwidth of 48.2%.

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“…[10][11][12][13] In recent years, more attention has been focused on the switchable absorber/reflector. [14][15][16][17][18][19][20][21][22][23][24][25][26] In order to avoid radar detection in complex electromagnetic environment, it is necessary to use absorbing materials. However, since the absorber only absorbs all the incident electromagnetic waves, it will cause the problem of blocking the useful signals at the same time.…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, more attention has been focused on the switchable absorber/reflector 14‐26 . In order to avoid radar detection in complex electromagnetic environment, it is necessary to use absorbing materials.…”

Section: Introductionmentioning

confidence: 99%

A wideband switchable absorber/reflector based on active frequency selective surface

Chen

Cao

Wang

2020

Int J RF Microw Comput Aided Eng

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A wide-band absorber and reflector using PIN diodes based on active frequency selective surface (AFSS) is presented, which the AFSS is performed as a wide-band absorber and reflector with OFF and ON state diodes. By changing the states of the PIN diodes, the measured reflectivity of the structure can dynamically switch from reflection to less than −10 dB absorptivity ranging from 7.5 to 18 GHz under normal incidence. The unique characteristic of the proposed structure lies in its capability to switch between two working states. In addition, the bandwidth of the designed structure covers a wider band compared with earlier switchable absorber/reflector structures. The fabricated structure shows good agreement with the simulated results.

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A Wideband Multifunctional Absorber/Reflector With Polarization-Insensitive Performance

Cited by 72 publications

References 24 publications

A switchable polarisation conversion/in‐phase reflection metasurface and its application

A switchable polarisation conversion/in‐phase reflection metasurface and its application

Design of a switchable phase‐modulated metasurface with wide modulation bandwidth in S band

A wideband switchable absorber/reflector based on active frequency selective surface

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