Ultra-wideband pentagonal fractal antenna with stable radiation characteristics for microwave imaging applications

Muhammad Abbas Khan; Umair Rafique; Hüseyin Şerif Savci; Anis Nurashikin Nordin; Saad Hassan Kiani; Syed Muzahir Abbas

doi:10.3390/electronics11132061

Ultra-wideband pentagonal fractal antenna with stable radiation characteristics for microwave imaging applications

Muhammad Abbas Khan, Umair Rafique^*, Hüseyin Şerif Savci, Anis Nurashikin Nordin, Saad Hassan Kiani, Syed Muzahir Abbas^*

^*Corresponding author for this work

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

24 Citations (Scopus)

107 Downloads (Pure)

Abstract

For microwave imaging applications, a design for an ultra-wideband (UWB) fractal antenna is presented. The antenna design is composed of a pentagonal fractal patch radiator fed by a modified co-planar waveguide (CPW) ground plane. It is built on a low-loss Rogers RT/Duroid 5880 dielectric substrate with a dimensions of 24 × 30 × 0.787 mm³. According to the measurements, the designed antenna offers a fractional bandwidth of 123.56% ranging from 3 GHz to 12.7 GHz. In addition, a maximum gain of 3.6 dBi is achieved at 8.5 GHz. From the results, it is also observed that the proposed antenna structure attains constant radiation characteristics in the operating bandwidth, which is useful for microwave imaging applications. The time domain analysis of the proposed design is also performed, and it is observed that the designed antenna offers a group delay of ≤ 1.5 ns, which ensures minimum pulse distortion.

Original language	English
Article number	2061
Pages (from-to)	1-11
Number of pages	11
Journal	Electronics
Volume	11
Issue number	13
DOIs	https://doi.org/10.3390/electronics11132061
Publication status	Published - 1 Jul 2022

Bibliographical note

Copyright the Author(s) 2022. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

Keywords

microwave imaging
ultra-wideband
fractal antenna
co-planar waveguide
fractional bandwidth
group delay

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10.3390/electronics11132061Licence: CC BY

Publisher version (open access)Final published version, 1.64 MBLicence: CC BY

Cite this

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title = "Ultra-wideband pentagonal fractal antenna with stable radiation characteristics for microwave imaging applications",

abstract = "For microwave imaging applications, a design for an ultra-wideband (UWB) fractal antenna is presented. The antenna design is composed of a pentagonal fractal patch radiator fed by a modified co-planar waveguide (CPW) ground plane. It is built on a low-loss Rogers RT/Duroid 5880 dielectric substrate with a dimensions of 24 × 30 × 0.787 mm3. According to the measurements, the designed antenna offers a fractional bandwidth of 123.56% ranging from 3 GHz to 12.7 GHz. In addition, a maximum gain of 3.6 dBi is achieved at 8.5 GHz. From the results, it is also observed that the proposed antenna structure attains constant radiation characteristics in the operating bandwidth, which is useful for microwave imaging applications. The time domain analysis of the proposed design is also performed, and it is observed that the designed antenna offers a group delay of ≤ 1.5 ns, which ensures minimum pulse distortion.",

keywords = "microwave imaging, ultra-wideband, fractal antenna, co-planar waveguide, fractional bandwidth, group delay",

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note = "Copyright the Author(s) 2022. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

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doi = "10.3390/electronics11132061",

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AU - Khan, Muhammad Abbas

AU - Rafique, Umair

AU - Savci, Hüseyin Şerif

AU - Nordin, Anis Nurashikin

AU - Kiani, Saad Hassan

AU - Abbas, Syed Muzahir

N1 - Copyright the Author(s) 2022. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2022/7/1

Y1 - 2022/7/1

N2 - For microwave imaging applications, a design for an ultra-wideband (UWB) fractal antenna is presented. The antenna design is composed of a pentagonal fractal patch radiator fed by a modified co-planar waveguide (CPW) ground plane. It is built on a low-loss Rogers RT/Duroid 5880 dielectric substrate with a dimensions of 24 × 30 × 0.787 mm3. According to the measurements, the designed antenna offers a fractional bandwidth of 123.56% ranging from 3 GHz to 12.7 GHz. In addition, a maximum gain of 3.6 dBi is achieved at 8.5 GHz. From the results, it is also observed that the proposed antenna structure attains constant radiation characteristics in the operating bandwidth, which is useful for microwave imaging applications. The time domain analysis of the proposed design is also performed, and it is observed that the designed antenna offers a group delay of ≤ 1.5 ns, which ensures minimum pulse distortion.

AB - For microwave imaging applications, a design for an ultra-wideband (UWB) fractal antenna is presented. The antenna design is composed of a pentagonal fractal patch radiator fed by a modified co-planar waveguide (CPW) ground plane. It is built on a low-loss Rogers RT/Duroid 5880 dielectric substrate with a dimensions of 24 × 30 × 0.787 mm3. According to the measurements, the designed antenna offers a fractional bandwidth of 123.56% ranging from 3 GHz to 12.7 GHz. In addition, a maximum gain of 3.6 dBi is achieved at 8.5 GHz. From the results, it is also observed that the proposed antenna structure attains constant radiation characteristics in the operating bandwidth, which is useful for microwave imaging applications. The time domain analysis of the proposed design is also performed, and it is observed that the designed antenna offers a group delay of ≤ 1.5 ns, which ensures minimum pulse distortion.

KW - microwave imaging

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KW - fractal antenna

KW - co-planar waveguide

KW - fractional bandwidth

KW - group delay

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JO - Electronics

JF - Electronics

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M1 - 2061

ER -

Ultra-wideband pentagonal fractal antenna with stable radiation characteristics for microwave imaging applications

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