Microwave Metalens Antennas

Chen, Zhi Ning; Li, Teng; Qing, Xianming; Shi, Jin; Li, Shunli; Su, Yuanyan; Liu, Wei; Xue, Chunhua; Lou, Qun; Jiang, Zhi Hao; Xu, Ruolei; Liu, Peiqin; Sheng, Huiwen

doi:10.1109/jproc.2023.3287599

Cited by 22 publications

(3 citation statements)

References 277 publications

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“…[ 34 , 35 ] However, most metasurfaces require external spatial feeding sources, increasing their profiles. [ 36 ] Although folded‐reflection, [ 37 ] folded‐transmission, [ 38 ] and Fabry–Perot [ 39 ] type metasurfaces have been proposed to reduce the distance between the feeding source and the metasurface, the air gap between the metasurface and feeding source still hinders them from real‐world integrated applications. To further improve the integration level, radiation‐type metasurfaces [ 40 , 41 , 42 ] and guided wave‐driven metasurfaces [ 43 , 44 , 45 , 46 , 47 ] have received extensive attention.…”

Section: Introductionmentioning

confidence: 99%

Complex‐Amplitude Programmable Versatile Metasurface Platform Driven by Guided Wave

Han,

Meng,

Guan

et al. 2024

Advanced Science

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Metasurfaces have shown unparalleled controllability of electromagnetic (EM) waves. However, most of the metasurfaces need external spatial feeding sources, which renders practical implementation quite challenging. Here, a low‐profile programmable metasurface with 0.05λ0 thickness driven by guided waves is proposed to achieve dynamic control of both amplitude and phase simultaneously. The metasurface is fed by a guided wave traveling in a substrate‐integrated waveguide, avoiding external spatial sources and complex power divider networks. By manipulating the state of the p‐i‐n diodes embedded in each meta‐atom, the proposed metasurface enables 1‐bit amplitude switching between radiating and nonradiating states, as well as a 1‐bit phase switching between 0° and 180°. As a proof of concept, two advanced functionalities, namely, low sidelobe‐level beam scanning and Airy beam generation, are experimentally demonstrated with a single platform operating in the far‐ and near‐field respectively. Such complex‐amplitude, programmable, and low‐profile metasurfaces can overcome integration limitations of traditional metasurfaces, and open up new avenues for more accurate and advanced EM wave control within an unprecedented degree of freedom.

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Section: Introductionmentioning

confidence: 99%

Complex‐Amplitude Programmable Versatile Metasurface Platform Driven by Guided Wave

Han,

Meng,

Guan

et al. 2024

Advanced Science

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“…However, to our knowledge, no studies have specifically established the feasibility of multilayer 2D-metasurface-based highpower antennas. On the other hand, several 3D gradient index (GRIN) metamaterial lenses were introduced for high-power antenna applications [24], [25]. In addition, recently, there has been a rising interest in metamaterial-based high-power sources [26], [27], [28], [29].…”

Section: Introductionmentioning

confidence: 99%

Design of a 3D Printed Wide Band Metasurface Antenna for High Power Applications

Hamdalla,

Zawad,

Kunkle

et al. 2024

Preprint

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Weight-size optimization is the main challenge of high-power antenna design. This letter presents a low-profile, metasurface-based wideband antenna. The proposed antenna comprises an N-type-to-waveguide transition to excite the metasurfaces and handle high-power excitations. A metasurface array of 4×4-unit cells is integrated into the waveguide. The proposed waveguide is 3D printed, and its internal faces are covered by copper tape to maintain a low weight (less than 0.5 lb.). The prototype is experimentally tested, and the results confirm the prototype’s functionality from 2.1 GHz to 3.6 GHz with a bandwidth of 52.6 % and a peak gain of 8.5 dBi. Furthermore, the high-power handling capability of the proposed design has been experimentally confirmed by exciting it with a 7 kV pulsed source. These results demonstrate the applicability of the proposed antenna in satellite communication, radar communication, and wireless communication between Unmanned Aerial Vehicles (UAVs).

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“…In addition to the above methods, using metamaterials for decoupling is a promising method. Meta structures for electromagnetic application are deployed to develop new microwave devices [21], especially metasurfaces for antenna [22]. In [23,24], SRRs were loaded on the antenna plane for decoupling surface waves and certain space waves.…”

Section: Introductionmentioning

confidence: 99%

A Multi-Frequency Low-Coupling MIMO Antenna Based on Metasurface

Tang,

Xiao,

Cao

et al. 2024

Electronics

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In this paper, a multi-frequency MIMO antenna for 5G and Wi-Fi 6E is presented. The antenna uses a cosine-shape monopole and split-ring resonator (SRR) structure for tri-band radiation, and frequency band expansion is achieved through SRR, folded split-ring resonators (FSRR) and Archimedean spiral metasurfaces for decoupling, with which a combination of surface wave and space wave decoupling is achieved. The Archimedean spiral metasurface unit can achieve space wave decoupling in the tri-band. By adopting the method of combining space wave decoupling and surface wave decoupling, the miniature antenna is achieved. The measured results closely align with the simulated results. Specifically, maintaining a reflection coefficient of −10 dB, the measured results indicate an increase in isolation of 3.5 dB, 36.47 dB, and 6.42 dB for the frequency bands of 3.45–3.55 GHz, 5.7–5.9 GHz, and 6.75–7 GHz, respectively. Additionally, the MIMO antenna demonstrates an average efficiency of approximately 89%, with an average envelope correlation coefficient (ECC) of 0.0025. Furthermore, the antenna’s peak gain increases by 4.3 dB at 3.5 GHz, 3.8 dB at 5.8 GHz, and 1.9 dB at 6.9 GHz upon integrating the metasurface. The proposed method and structure are anticipated to contribute significantly to decoupling in multi-frequency MIMO antennas.

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Microwave Metalens Antennas

Cited by 22 publications

References 277 publications

Complex‐Amplitude Programmable Versatile Metasurface Platform Driven by Guided Wave

Complex‐Amplitude Programmable Versatile Metasurface Platform Driven by Guided Wave

Design of a 3D Printed Wide Band Metasurface Antenna for High Power Applications

A Multi-Frequency Low-Coupling MIMO Antenna Based on Metasurface

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