Low sidelobe level millimeter-wave asymmetric bull's eye antenna with minimal profile feeding
File(s)FINAL VERSION.pdf (2.11 MB)
Accepted version
Author(s)
Navarro-Cía, Miguel
Beaskoetxea, Unai
Teniente, Jorge
Beruete, Miguel
Type
Journal Article
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.
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.
Date Issued
2024-01
Date Acceptance
2023-10-01
Citation
IEEE Antennas and Wireless Propagation Letters, 2024, 23 (1), pp.209-213
ISSN
1536-1225
Publisher
Institute of Electrical and Electronics Engineers
Start Page
209
End Page
213
Journal / Book Title
IEEE Antennas and Wireless Propagation Letters
Volume
23
Issue
1
Copyright Statement
© 2023 IEEE. Personal use is permitted, but republication/redistribution requires IEEE permission. For the purpose
of open access, the author(s) has applied a Creative Commons Attribution
(CC BY) license to any Accepted Manuscript version arising.
of open access, the author(s) has applied a Creative Commons Attribution
(CC BY) license to any Accepted Manuscript version arising.
License URL
Identifier
http://dx.doi.org/10.1109/lawp.2023.3321411
Publication Status
Published
Date Publish Online
2023-10-02