2 × 2 Lens Array Antenna Using Square-Bottom Concave-Convex Lens in 300-GHz Band

Bazilah Baharom; Yoshiki Sugimoto; Bakar Rohani; Kunio Sakakibara; Nobuyoshi Kikuma; Yoshihide Yamada; Nurul Huda Abd Rahman

doi:10.1109/OJAP.2023.3325055

2 × 2 Lens Array Antenna Using Square-Bottom Concave-Convex Lens in 300-GHz Band

Bazilah Baharom
, Yoshiki Sugimoto^*
, Bakar Rohani
, Kunio Sakakibara
, Nobuyoshi Kikuma
, Yoshihide Yamada
, Nurul Huda Abd Rahman

^*Corresponding author for this work

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

7 Scopus citations

Abstract

A $2\times2$ lens array provides a half reduction of antenna height compared to the twice-diameter single-feed lens antenna with an almost similar gain performance due to the same aperture size. However, it generally suffers from a non-uniform amplitude distribution of each lens, which degrades the overall lens antenna performance. This study proposes a $2\times2$ lens array antenna composed of square-bottom lenses with a concave-convex lens shaping design to improve the uniformity and aperture efficiency. The measured results of the proposed $2\times2$ square-bottom concave-convex lens array antenna with a lens height of 9.74 mm achieved a boresight gain of 34.9 dBi, and the lowest sidelobe level observed was greater than -12 dB in the 300-GHz band.

Original language	English
Pages (from-to)	1074-1086
Number of pages	13
Journal	IEEE Open Journal of Antennas and Propagation
Volume	4
DOIs	https://doi.org/10.1109/OJAP.2023.3325055
State	Published - 2023
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2020 IEEE.

Keywords

Lens antenna
antenna array
concave-convex
sub-terahertz

ASJC Scopus subject areas

Electrical and Electronic Engineering

Access to Document

10.1109/OJAP.2023.3325055

Cite this

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title = "2 × 2 Lens Array Antenna Using Square-Bottom Concave-Convex Lens in 300-GHz Band",

abstract = "A \$2\textbackslash{}times2\$ lens array provides a half reduction of antenna height compared to the twice-diameter single-feed lens antenna with an almost similar gain performance due to the same aperture size. However, it generally suffers from a non-uniform amplitude distribution of each lens, which degrades the overall lens antenna performance. This study proposes a \$2\textbackslash{}times2\$ lens array antenna composed of square-bottom lenses with a concave-convex lens shaping design to improve the uniformity and aperture efficiency. The measured results of the proposed \$2\textbackslash{}times2\$ square-bottom concave-convex lens array antenna with a lens height of 9.74 mm achieved a boresight gain of 34.9 dBi, and the lowest sidelobe level observed was greater than -12 dB in the 300-GHz band.",

keywords = "Lens antenna, antenna array, concave-convex, sub-terahertz",

author = "Bazilah Baharom and Yoshiki Sugimoto and Bakar Rohani and Kunio Sakakibara and Nobuyoshi Kikuma and Yoshihide Yamada and Rahman, \{Nurul Huda Abd\}",

note = "Publisher Copyright: {\textcopyright} 2020 IEEE.",

year = "2023",

doi = "10.1109/OJAP.2023.3325055",

language = "English",

volume = "4",

pages = "1074--1086",

journal = "IEEE Open Journal of Antennas and Propagation",

issn = "2637-6431",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

TY - JOUR

T1 - 2 × 2 Lens Array Antenna Using Square-Bottom Concave-Convex Lens in 300-GHz Band

AU - Baharom, Bazilah

AU - Sugimoto, Yoshiki

AU - Rohani, Bakar

AU - Sakakibara, Kunio

AU - Kikuma, Nobuyoshi

AU - Yamada, Yoshihide

AU - Rahman, Nurul Huda Abd

PY - 2023

Y1 - 2023

N2 - A $2\times2$ lens array provides a half reduction of antenna height compared to the twice-diameter single-feed lens antenna with an almost similar gain performance due to the same aperture size. However, it generally suffers from a non-uniform amplitude distribution of each lens, which degrades the overall lens antenna performance. This study proposes a $2\times2$ lens array antenna composed of square-bottom lenses with a concave-convex lens shaping design to improve the uniformity and aperture efficiency. The measured results of the proposed $2\times2$ square-bottom concave-convex lens array antenna with a lens height of 9.74 mm achieved a boresight gain of 34.9 dBi, and the lowest sidelobe level observed was greater than -12 dB in the 300-GHz band.

AB - A $2\times2$ lens array provides a half reduction of antenna height compared to the twice-diameter single-feed lens antenna with an almost similar gain performance due to the same aperture size. However, it generally suffers from a non-uniform amplitude distribution of each lens, which degrades the overall lens antenna performance. This study proposes a $2\times2$ lens array antenna composed of square-bottom lenses with a concave-convex lens shaping design to improve the uniformity and aperture efficiency. The measured results of the proposed $2\times2$ square-bottom concave-convex lens array antenna with a lens height of 9.74 mm achieved a boresight gain of 34.9 dBi, and the lowest sidelobe level observed was greater than -12 dB in the 300-GHz band.

KW - Lens antenna

KW - antenna array

KW - concave-convex

KW - sub-terahertz

UR - https://www.scopus.com/pages/publications/85174842426

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DO - 10.1109/OJAP.2023.3325055

M3 - Article

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JO - IEEE Open Journal of Antennas and Propagation

JF - IEEE Open Journal of Antennas and Propagation

ER -

2 × 2 Lens Array Antenna Using Square-Bottom Concave-Convex Lens in 300-GHz Band

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this