Frequency-Multiplexed Spin-Decoupled Metasurface for Low-Profile Dual-Band Dual-Circularly Polarized Transmitarray With Independent Beams

Yang, Weixu; Chen, Ke; Zhao, Junming; Jiang, Tian; Feng, Yijun

doi:10.1109/tap.2023.3332497

Cited by 8 publications

(2 citation statements)

References 38 publications

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“…And the operating bandwidth of metasurface is limited. (3) achiral metasurface with weak resonance characteristics based on propagation phase and geometric phase [34][35][36][37][38][39][40][41][42][43]. The modulation strategy achieves a large propagation phase shift through the rational design of weak-resonant unit cells in a wide frequency range.…”

Section: Introductionmentioning

confidence: 99%

Broadband spin-decoupled metasurface for independent wavefront manipulations of orthogonal circularly-polarized waves

Chen,

Zhang,

Feng

et al. 2024

Phys. Scr.

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Metasurfaces endowed with spin-decoupled functionalities offer the capability to meticulously customize the electromagnetic wavefronts of incident dual orthogonal circularly-polarized (CP) waves in a desirable manner, that holds immense potential for broadening their application fields. Nevertheless, a major lack that persists in most spin-decoupled metasurfaces is the limited bandwidth or the intricate design requirements. Herein, we propose a broadband spin-decoupled metasurface, consisted of weak-resonant mirror-symmetry unit structures, that enables independent and distinct wavefront manipulations under the incidence of orthogonal CP waves. As a demonstration, we present a dual-channel metasurface that integrates geometric and propagation phases to generate vortex waves with two distinct modes in a wide frequency range from 10 GHz to 16 GHz. Both simulated and experimental resultsare consistent and collectively confirm the validity of our proposed metasurface. The research provides a practical and efficient avenue for constructing spin-decoupled metasurface within a broad frequency band.

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Section: Introductionmentioning

confidence: 99%

Broadband spin-decoupled metasurface for independent wavefront manipulations of orthogonal circularly-polarized waves

Chen,

Zhang,

Feng

et al. 2024

Phys. Scr.

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“…them, polarization-dependent surfaces are commonly utilized to achieve mode switching by separating the reflected and transmitted electromagnetic waves into two orthogonal polarized waves. [35][36][37][38][39][40] These designs require the incident waves to have different polarizations to activate the desired functions. Other passive metasurfaces, such as tunable structures, [41] cascaded surfaces, [42,43] and frequency diversity surfaces, [44,45] can generate bidirectional beams through the shared aperture array distribution.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Transmission‐Reflection‐Integrated Coding Metasurface for Full‐Space Electromagnetic Wavefront Manipulation

Yin

Ren

Zhang

et al. 2023

Advanced Optical Materials

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Reconfigurable metasurfaces exhibit the capability of flexibly controlling electromagnetic (EM) waves, and the real‐time manipulation of tailored EM wavefront in full‐space is one of the steadily increasing interests. This paper proposes a reconfigurable transmission‐reflection‐integrated (TRI) coding metasurface, combining the functionalities of reconfigurable transmission and reflection metasurfaces. The meta‐particle is composed of a multilayer structure integrated with three positive‐intrinsic‐negative (PIN) diodes. By dynamically controlling the states of these diodes with the direct‐current (DC) bias voltage from a field‐programmable‐gate‐array (FPGA), meta‐particles achieve switching between transmission mode and reflection mode and independently modulate phase response. Metasurfaces can manipulate the reflected and transmitted wavefront by array encoding, allowing for full‐space control of the EM wavefront. Additionally, this paper demonstrates various functions implemented on this metasurface, including mode switching, beam scanning, shaping, focusing, and spatial scattering. As a proof of concept, a metasurface array prototype is fabricated and experimented. The simulation and measurement results agree well, confirming the effective ability of reconfigurable TRI metasurfaces to manipulate EM waves throughout full‐space. The proposed reconfigurable TRI coding metasurface opens the door for flexible wavefront control in the full‐space domain, with broad application prospects in areas such as microwave imaging, EM stealth, and smart radomes.

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A High-Efficiency Folded Mode-Converting Transmitarray Antenna

Zhai,

Zhao,

et al. 2024

2024 International Applied Computational Electromagnetics Society Symposium (ACES-China)

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Frequency-Multiplexed Spin-Decoupled Metasurface for Low-Profile Dual-Band Dual-Circularly Polarized Transmitarray With Independent Beams

Cited by 8 publications

References 38 publications

Broadband spin-decoupled metasurface for independent wavefront manipulations of orthogonal circularly-polarized waves

Broadband spin-decoupled metasurface for independent wavefront manipulations of orthogonal circularly-polarized waves

Reconfigurable Transmission‐Reflection‐Integrated Coding Metasurface for Full‐Space Electromagnetic Wavefront Manipulation

A High-Efficiency Folded Mode-Converting Transmitarray Antenna

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