An Electrically Small Antenna With Quasi-Isotropic Coverage for Linearly Polarized Receiver

Wang, Yang; Tang, Ming‐Chun; Shi, Ting; Yi, Da; Li, Dajiang; Zeng, Xiaoping

doi:10.1109/tap.2022.3209755

IEEE Trans. Antennas Propagat.

2022

DOI: 10.1109/tap.2022.3209755

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An Electrically Small Antenna With Quasi-Isotropic Coverage for Linearly Polarized Receiver

Yang Wang

Ming‐Chun Tang

Ting Shi

et al.

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Cited by 5 publications

References 28 publications

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Achieving Broadband Near‐Field Directionality with a 3D Active Janus Antenna

Xue,

Oyesina,

Wong

2024

Laser & Photonics Reviews

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Directional sources like the Huygens source enable electromagnetic wavefront forming/shaping with great flexibility and have made impacts in photonics, applied physics, metasurfaces, and antenna engineering. The related Janus source features a strongly directional near‐field and a quasi‐isotropic far‐field, which gives it promising application potentials distinct from, and complementary to, the Huygens source. Nevertheless, most existing Janus sources face strong limitations in efficiency and/or 3D operation, hindering their practical application. This paper introduces a 3D active Janus source that achieves near‐field directionality over a wide bandwidth and a power efficiency much improved over existing passive Janus sources. It is shown that a class of quasi‐isotropic antennas are actually active Janus sources (which is referred to as the Janus antenna). A well‐designed Janus antenna is demonstrated which (a) exhibits near‐field directionality over a broad bandwidth of 28.9%, and (b) in a practical usage environment, achieves a power efficiency ≈60 times higher than a passive Janus source. This work elucidates the connection between the “Janus dipole” concept in physics and the “quasi‐isotropic antenna” concept in antenna design, and paves the way for the design of future directional devices with much improved bandwidth and efficiency.

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Achieving Broadband Near‐Field Directionality with a 3D Active Janus Antenna

Xue,

Oyesina,

Wong

2024

Laser & Photonics Reviews

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Design of a wide beamwidth spherical conformal antenna array for ship‐borne applications

Luo

Zhao

Yan

et al. 2022

Micro & Optical Tech Letters

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This study presents the phase setting method for a spherical conformal antenna array to achieve a wide beamwidth circularly polarized radiation pattern. A dodecahedral spherical array was fabricated and measured to validate the phase setting method. The array adopts a regular dodecahedron spatial distribution structure composed of 11 dual‐polarization elements. By exciting 11 elements simultaneously with designed phase distributions, the proposed spherical array can achieve a wide beamwidth of more than 210° with circular polarization by selecting the radius of the dodecahedron. In addition, the power division network of the array is designed and processed, and the feed network is simplified by rotating the antenna element port to control the phase. Measurements agree well with the simulations. The measured results show that the proposed spherical antenna array achieves a half‐power beamwidth of more than 210° and an axial‐ratio beamwidth of larger than 240°.

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3-D-Printed CRLH Metamaterial-Enabled Electrically Small Antenna

Li,

Lazarus,

Klemash

et al. 2024

Antennas Wirel. Propag. Lett.

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An Electrically Small Antenna With Quasi-Isotropic Coverage for Linearly Polarized Receiver

Cited by 5 publications

References 28 publications

Achieving Broadband Near‐Field Directionality with a 3D Active Janus Antenna

Achieving Broadband Near‐Field Directionality with a 3D Active Janus Antenna

Design of a wide beamwidth spherical conformal antenna array for ship‐borne applications

3-D-Printed CRLH Metamaterial-Enabled Electrically Small Antenna

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