Design of Aperture-coupled Vivaldi-antenna Array with Scan-range-improving Parasitic Resonators for Ka-band

Jan H.S. Bergman; Mikko Heino; Juha Ala-Laurinaho; Taneli Riihonen; Mikko Valkama; Ville Viikari

doi:10.1109/TAP.2025.3576489

Design of Aperture-coupled Vivaldi-antenna Array with Scan-range-improving Parasitic Resonators for Ka-band

Jan H.S. Bergman^*
, Mikko Heino
, Juha Ala-Laurinaho
, Taneli Riihonen
, Mikko Valkama
, Ville Viikari

^*Corresponding author for this work

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

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Abstract

We present a linear Vivaldi-antenna array with a misalignment-robust non-galvanic transition and scan-range-improvingparasitic resonators for 5G FR2-1 base-station applications. The array covers most of the Ka-band (26.5–40 GHz) on a scan range of ±60◦ with a total active reflection coefficient of below −10 dB and a scan gain of above 10 dBi. Furthermore, the parasitic resonators increase the scan range to ±85◦ between 30 and 35 GHz. A prototype of the array is measured and the performance is confirmed to coincide well with the simulations.

Original language	English
Pages (from-to)	6955-6960
Journal	IEEE Transactions on Antennas and Propagation
Volume	73
Issue number	9
DOIs	https://doi.org/10.1109/TAP.2025.3576489
Publication status	Published - Sept 2025
Publication type	A1 Journal article-refereed

Keywords

3D-printable antennas
antenna arrays
aperture-coupled transitions
millimeter-wave antennas
parasitic resonators

Publication forum classification

Publication forum level 3

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1109/TAP.2025.3576489Licence: CC BY

Design of Aperture-Coupled Vivaldi-Antenna Array With Scan-Range-Improving Parasitic Resonators for Ka-BandFinal published version, 2.6 MBLicence: CC BY

https://urn.fi/URN:NBN:fi:tuni-202509189358Licence: CC BY

Cite this

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title = "Design of Aperture-coupled Vivaldi-antenna Array with Scan-range-improving Parasitic Resonators for Ka-band",

abstract = "We present a linear Vivaldi-antenna array with a misalignment-robust non-galvanic transition and scan-range-improvingparasitic resonators for 5G FR2-1 base-station applications. The array covers most of the Ka-band (26.5–40 GHz) on a scan range of ±60◦ with a total active reflection coefficient of below −10 dB and a scan gain of above 10 dBi. Furthermore, the parasitic resonators increase the scan range to ±85◦ between 30 and 35 GHz. A prototype of the array is measured and the performance is confirmed to coincide well with the simulations.",

keywords = "3D-printable antennas, antenna arrays, aperture-coupled transitions, millimeter-wave antennas, parasitic resonators",

author = "Bergman, \{Jan H.S.\} and Mikko Heino and Juha Ala-Laurinaho and Taneli Riihonen and Mikko Valkama and Ville Viikari",

note = "Publisher Copyright: {\textcopyright} 1963-2012 IEEE.",

year = "2025",

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doi = "10.1109/TAP.2025.3576489",

language = "English",

volume = "73",

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AU - Bergman, Jan H.S.

AU - Heino, Mikko

AU - Ala-Laurinaho, Juha

AU - Riihonen, Taneli

AU - Valkama, Mikko

AU - Viikari, Ville

PY - 2025/9

Y1 - 2025/9

N2 - We present a linear Vivaldi-antenna array with a misalignment-robust non-galvanic transition and scan-range-improvingparasitic resonators for 5G FR2-1 base-station applications. The array covers most of the Ka-band (26.5–40 GHz) on a scan range of ±60◦ with a total active reflection coefficient of below −10 dB and a scan gain of above 10 dBi. Furthermore, the parasitic resonators increase the scan range to ±85◦ between 30 and 35 GHz. A prototype of the array is measured and the performance is confirmed to coincide well with the simulations.

AB - We present a linear Vivaldi-antenna array with a misalignment-robust non-galvanic transition and scan-range-improvingparasitic resonators for 5G FR2-1 base-station applications. The array covers most of the Ka-band (26.5–40 GHz) on a scan range of ±60◦ with a total active reflection coefficient of below −10 dB and a scan gain of above 10 dBi. Furthermore, the parasitic resonators increase the scan range to ±85◦ between 30 and 35 GHz. A prototype of the array is measured and the performance is confirmed to coincide well with the simulations.

KW - 3D-printable antennas

KW - antenna arrays

KW - aperture-coupled transitions

KW - millimeter-wave antennas

KW - parasitic resonators

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DO - 10.1109/TAP.2025.3576489

M3 - Article

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SN - 0018-926X

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EP - 6960

JO - IEEE Transactions on Antennas and Propagation

JF - IEEE Transactions on Antennas and Propagation

IS - 9

ER -

Design of Aperture-coupled Vivaldi-antenna Array with Scan-range-improving Parasitic Resonators for Ka-band

Abstract

Keywords

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