A W-Band High-Gain Bilayer Transmit-Array Antenna Employing Huygens' Resonance

A special type of transmissive phase plate, named Huygens' metasurfaces (HMS), is capable of efficiently manipulating transmitted electromagnetic wavefronts with extremely low back-scattering. Here, in contrast to conventional planar multilayer lens arrays, a transmit-array (TA) antenna based o...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2023-05, Vol.22 (5), p.1-5
Main Authors: Miao, Zhuo-Wei, Hao, Zhang-Cheng, Yu, Da-Qun, Ding, Chen-Yu, Wu, Fan
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna design
Antennas
Bilayers
Equivalent circuit model
Equivalent circuits
High gain
Huygens' resonance
Impedance
Integrated circuit modeling
Magnetic dipoles
Magnetic resonance
metasurface
Metasurfaces
Multilayers
Phase plates
Prototypes
Resonance
Resonators
Substrates
Surface impedance
Transmit-array antenna
Unit cell
Wave fronts
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Summary:A special type of transmissive phase plate, named Huygens' metasurfaces (HMS), is capable of efficiently manipulating transmitted electromagnetic wavefronts with extremely low back-scattering. Here, in contrast to conventional planar multilayer lens arrays, a transmit-array (TA) antenna based on Huygens' resonance is proposed for high-gain applications at W -band. The proposed meta-cell is comprised of a pair of parallel metallic strips on opposite sides of a single dielectric substrate connected by a pair of vias, and can independently control the electric and magnetic dipole responses and induce the desired Huygens' resonance. An equivalent circuit model (ECM) is used to describe its operation principle in detail. A full 360 degrees phase coverage and a high transmission amplitude can be obtained simultaneously using the proposed unit cell. To experimentally verify the proposed concept and design, a TA antenna is fabricated and tested. The Huygens' TA prototype exhibits good radiation performance. The measured peak gain of the TA prototype is 34.341 dBi at 87 GHz with an aperture efficiency of 45.7%, and the measured 3-dB gain bandwidth is from 79 to 90 GHz.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2023.3235989