Low Sidelobe Level Millimeter-Wave Asymmetric Bull’s Eye Antenna with Minimal Profile Feeding

Miguel Navarro-Cia; Unai Beaskoetxea; Jorge Teniente; Miguel Beruete

doi:10.1109/LAWP.2023.3321411

Low Sidelobe Level Millimeter-Wave Asymmetric Bull’s Eye Antenna with Minimal Profile Feeding

Miguel Navarro-Cia^*, Unai Beaskoetxea, Jorge Teniente, Miguel Beruete

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

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Abstract

Bull’s eye antennas exhibit remarkable directivity considering their low profile, albeit accompanied by high sidelobes. This undesirable radiation characteristic is tackled here by reporting a complementary split ring feeding whereby the broadside space-wave partially responsible for the high sidelobes is cancelled while the leaky-wave is excited effectively. This feeding results into an asymmetric bull’s eye antenna with minimal profile (∼0.73λ₀) and no protrusions on the radiating interface. The fabricated 10 period antenna operating in the Ka band shows a directivity of 23.5 dBi, a sidelobe level of -22.9 dB (>6 dB improvement compared to other bull’s eye antennas) and a beamwidth of 3.7^◦ and 6.7^◦ in the E- and H-plane, respectively.

Original language	English
Pages (from-to)	209-213
Number of pages	5
Journal	IEEE Antennas and Wireless Propagation Letters
Volume	23
Issue number	1
Early online date	2 Oct 2023
DOIs	https://doi.org/10.1109/LAWP.2023.3321411
Publication status	Published - 6 Jan 2024

Bibliographical note

ACKNOWLEDGMENT
The authors would like to thank S. Brookes (University of Birmingham) for supporting the fabrication and T. Skaik (University of Birmingham) for confirming S11 measurements with a Keysight N5245A vector network analyzer. For the purpose of open access, the authors have applied a Creative Commons Attribution (CC BY) license to any accepted manuscript version arising.

Keywords

Bull's Eye antenna
Leaky wave antenna
millimeter wave

Access to Document

10.1109/LAWP.2023.3321411

NavarroCía2023LowAccepted author manuscript, 2.11 MBLicence: Creative Commons: Attribution (CC BY)

THEIA: fast super-resolution TeraHErtz mIcroscopy for nAtural Sciences
Navarro-Cia, M.
Engineering & Physical Science Research Council
1/08/19 → 31/03/21
Project: Research
Super-resolution Structured Terahertz Illumination Microscopy
Navarro-Cia, M.
The Royal Society
31/03/18 → 30/03/19
Project: Research Councils

Cite this

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title = "Low Sidelobe Level Millimeter-Wave Asymmetric Bull{\textquoteright}s Eye Antenna with Minimal Profile Feeding",

abstract = "Bull{\textquoteright}s eye antennas exhibit remarkable directivity considering their low profile, albeit accompanied by high sidelobes. This undesirable radiation characteristic is tackled here by reporting a complementary split ring feeding whereby the broadside space-wave partially responsible for the high sidelobes is cancelled while the leaky-wave is excited effectively. This feeding results into an asymmetric bull{\textquoteright}s eye antenna with minimal profile (∼0.73λ0) and no protrusions on the radiating interface. The fabricated 10 period antenna operating in the Ka band shows a directivity of 23.5 dBi, a sidelobe level of -22.9 dB (>6 dB improvement compared to other bull{\textquoteright}s eye antennas) and a beamwidth of 3.7◦ and 6.7◦ in the E- and H-plane, respectively.",

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AU - Beaskoetxea, Unai

AU - Teniente, Jorge

AU - Beruete, Miguel

N1 - ACKNOWLEDGMENT The authors would like to thank S. Brookes (University of Birmingham) for supporting the fabrication and T. Skaik (University of Birmingham) for confirming S11 measurements with a Keysight N5245A vector network analyzer. For the purpose of open access, the authors have applied a Creative Commons Attribution (CC BY) license to any accepted manuscript version arising.

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N2 - Bull’s eye antennas exhibit remarkable directivity considering their low profile, albeit accompanied by high sidelobes. This undesirable radiation characteristic is tackled here by reporting a complementary split ring feeding whereby the broadside space-wave partially responsible for the high sidelobes is cancelled while the leaky-wave is excited effectively. This feeding results into an asymmetric bull’s eye antenna with minimal profile (∼0.73λ0) and no protrusions on the radiating interface. The fabricated 10 period antenna operating in the Ka band shows a directivity of 23.5 dBi, a sidelobe level of -22.9 dB (>6 dB improvement compared to other bull’s eye antennas) and a beamwidth of 3.7◦ and 6.7◦ in the E- and H-plane, respectively.

AB - Bull’s eye antennas exhibit remarkable directivity considering their low profile, albeit accompanied by high sidelobes. This undesirable radiation characteristic is tackled here by reporting a complementary split ring feeding whereby the broadside space-wave partially responsible for the high sidelobes is cancelled while the leaky-wave is excited effectively. This feeding results into an asymmetric bull’s eye antenna with minimal profile (∼0.73λ0) and no protrusions on the radiating interface. The fabricated 10 period antenna operating in the Ka band shows a directivity of 23.5 dBi, a sidelobe level of -22.9 dB (>6 dB improvement compared to other bull’s eye antennas) and a beamwidth of 3.7◦ and 6.7◦ in the E- and H-plane, respectively.

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KW - Leaky wave antenna

KW - millimeter wave

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DO - 10.1109/LAWP.2023.3321411

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JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

IS - 1

ER -

Low Sidelobe Level Millimeter-Wave Asymmetric Bull’s Eye Antenna with Minimal Profile Feeding

Abstract

Bibliographical note

Keywords

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Projects

THEIA: fast super-resolution TeraHErtz mIcroscopy for nAtural Sciences

Super-resolution Structured Terahertz Illumination Microscopy

Cite this