Design of a compact antenna with broadband and high gain

A novel compact antenna with characteristics of broadband and high gain is proposed in this paper. The proposed antenna comprises 1 × 2 elements that are connected together by a balance power divider. To create a new shape, the proposed antenna is a combination of dipole and patch shapes and acts as...

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Published in:Electromagnetics 2024-01, Vol.44 (1), p.18-31
Main Authors: Nguyen, Ngoc-Lan, Bui, Cong Danh, Nguyen, Quang Sang
Format: Article
Language:English
Subjects:
AMC
Antennas
array antenna
artificial magnetic conductor
Bandwidths
Broadband
dipole antenna
Dipoles
Frequencies
High gain
metasurface
microstrip antenna
monopole
Power dividers
Sidelobe reduction
Sidelobes
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creator Nguyen, Ngoc-Lan
Bui, Cong Danh
Nguyen, Quang Sang
description A novel compact antenna with characteristics of broadband and high gain is proposed in this paper. The proposed antenna comprises 1 × 2 elements that are connected together by a balance power divider. To create a new shape, the proposed antenna is a combination of dipole and patch shapes and acts as a monopole. As a result, the impedance bandwidth is enhanced. Additionally, the gain of the proposed antenna is improved by using an artificial magnetic conductor (AMC) surface. The antenna prototype, with an overall size of 0.66 λ 0 x 0.79 λ 0 x 0.11 λ 0 (λ 0 is the wavelength in free space at the lowest operating frequency of 2.63 GHz) has a −10 dB bandwidth of 78% (2.63-6 GHz), a broadside gain of 11.5 dBi, 3-dB gain bandwidth of 19%, and a total efficiency over79% in all operating frequency bands. Thanks to the presence of AMC surface and the combination ofmicrostrip and dipole shapes, the antenna resulted in an overall larger bandwidth, low sidelobe level, and higher gain and efficiency.
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subjects AMC
Antennas
array antenna
artificial magnetic conductor
Bandwidths
Broadband
dipole antenna
Dipoles
Frequencies
High gain
metasurface
microstrip antenna
monopole
Power dividers
Sidelobe reduction
Sidelobes
title Design of a compact antenna with broadband and high gain
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