A miniaturized and high-gain antipodal Vivaldi antennas using directors

Al Gburi, Ahmed Jamal Abdullah and Ibrahim, Islam M. and Elsherbini, Moataz M. and AbdelKader, Hala M. and Ahmed, Mohamed Ismail (2024) A miniaturized and high-gain antipodal Vivaldi antennas using directors. Progress in Electromagnetics Research Letters, 118. pp. 85-92. ISSN 1937-6480

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Abstract

In this paper, a miniaturized millimeter-wave (mm-wave) antipodal Vivaldi antenna (AVA) is proposed. The AVA antenna structure is modeled using MWSCST2022 optimization tools. The AVA exhibits good impedance matching, high gain, and a small optimum size of 5 × 2.5 × 1.5 mm3, fabricated on an FR-4 substrate. An array of square and circular director units is modeled and loaded at the front and back of the AVA antenna. The spacing between directors is studied and positioned at a tuned distance from the antenna for gain improvements and optimum radiation parameters. The AVA has an operating spectrum from 58 GHz up to 62 GHz. The finalized AVA, along with directors, obtained a high gain of 12.9 dBi with directors, while the AVA achieved 9.22 dBi without directors. The proposed antenna model is simulated and measured for short-range communications and imaging. The results of the modeling techniques and measurements agree well with each other.

Item Type:	Article
Uncontrolled Keywords:	Antenna arrays, Microwave antennas
Divisions:	Faculty Of Electronics And Computer Technology And Engineering
Depositing User:	Sabariah Ismail
Date Deposited:	24 Jul 2024 12:19
Last Modified:	24 Jul 2024 12:19
URI:	http://eprints.utem.edu.my/id/eprint/27582
Statistic Details:	View Download Statistic

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