Broadband circularly polarized slot antenna loaded by a multiple-circular-sector patch

Son Trinh-Van; Youngoo Yang; Kang Yoon Lee; Keum Cheol Hwang

doi:10.3390/s18051576

Broadband circularly polarized slot antenna loaded by a multiple-circular-sector patch

Department of Electronic and Electrical Engineering

Sungkyunkwan University

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

14 Scopus citations

Abstract

In this paper, a microstrip-fed broadband circularly polarized (CP) slot antenna is presented. CP operation can be attained simply by embedding an S-shaped strip. By loading with a multiple-circular-sector patch, which consists of 12 circular-sector patches with identical central angles of 30^◦ and different radii, the 3 dB axial ratio (AR) bandwidth is significantly broadened. To validate the performance of the proposed antenna, an antenna prototype is fabricated and tested. The fabricated antenna is 54 mm × 54 mm × 0.8 mm in size. The measured −10 dB reflection and 3 dB AR bandwidths are 81.06% (1.68–3.97 GHz) and 70.55% (1.89–3.95 GHz), respectively. Within the 3 dB AR bandwidth, the measured peak gain is 3.81 dBic. Reasonable agreement is also obtained between the measured and simulated results.

Original language	English
Article number	1576
Journal	Sensors
Volume	18
Issue number	5
DOIs	https://doi.org/10.3390/s18051576
State	Published - 15 May 2018

Keywords

Broad bandwidth
Circular polarization
Microstrip feed line
Multiple-circular-sector configuration
Slot antenna

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10.3390/s18051576

Cite this

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title = "Broadband circularly polarized slot antenna loaded by a multiple-circular-sector patch",

abstract = "In this paper, a microstrip-fed broadband circularly polarized (CP) slot antenna is presented. CP operation can be attained simply by embedding an S-shaped strip. By loading with a multiple-circular-sector patch, which consists of 12 circular-sector patches with identical central angles of 30◦ and different radii, the 3 dB axial ratio (AR) bandwidth is significantly broadened. To validate the performance of the proposed antenna, an antenna prototype is fabricated and tested. The fabricated antenna is 54 mm × 54 mm × 0.8 mm in size. The measured −10 dB reflection and 3 dB AR bandwidths are 81.06\% (1.68–3.97 GHz) and 70.55\% (1.89–3.95 GHz), respectively. Within the 3 dB AR bandwidth, the measured peak gain is 3.81 dBic. Reasonable agreement is also obtained between the measured and simulated results.",

keywords = "Broad bandwidth, Circular polarization, Microstrip feed line, Multiple-circular-sector configuration, Slot antenna",

author = "Son Trinh-Van and Youngoo Yang and Lee, \{Kang Yoon\} and Hwang, \{Keum Cheol\}",

note = "Publisher Copyright: {\textcopyright} 2018 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2018",

month = may,

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doi = "10.3390/s18051576",

language = "English",

volume = "18",

journal = "Sensors",

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T1 - Broadband circularly polarized slot antenna loaded by a multiple-circular-sector patch

AU - Trinh-Van, Son

AU - Yang, Youngoo

AU - Lee, Kang Yoon

AU - Hwang, Keum Cheol

PY - 2018/5/15

Y1 - 2018/5/15

N2 - In this paper, a microstrip-fed broadband circularly polarized (CP) slot antenna is presented. CP operation can be attained simply by embedding an S-shaped strip. By loading with a multiple-circular-sector patch, which consists of 12 circular-sector patches with identical central angles of 30◦ and different radii, the 3 dB axial ratio (AR) bandwidth is significantly broadened. To validate the performance of the proposed antenna, an antenna prototype is fabricated and tested. The fabricated antenna is 54 mm × 54 mm × 0.8 mm in size. The measured −10 dB reflection and 3 dB AR bandwidths are 81.06% (1.68–3.97 GHz) and 70.55% (1.89–3.95 GHz), respectively. Within the 3 dB AR bandwidth, the measured peak gain is 3.81 dBic. Reasonable agreement is also obtained between the measured and simulated results.

AB - In this paper, a microstrip-fed broadband circularly polarized (CP) slot antenna is presented. CP operation can be attained simply by embedding an S-shaped strip. By loading with a multiple-circular-sector patch, which consists of 12 circular-sector patches with identical central angles of 30◦ and different radii, the 3 dB axial ratio (AR) bandwidth is significantly broadened. To validate the performance of the proposed antenna, an antenna prototype is fabricated and tested. The fabricated antenna is 54 mm × 54 mm × 0.8 mm in size. The measured −10 dB reflection and 3 dB AR bandwidths are 81.06% (1.68–3.97 GHz) and 70.55% (1.89–3.95 GHz), respectively. Within the 3 dB AR bandwidth, the measured peak gain is 3.81 dBic. Reasonable agreement is also obtained between the measured and simulated results.

KW - Broad bandwidth

KW - Circular polarization

KW - Microstrip feed line

KW - Multiple-circular-sector configuration

KW - Slot antenna

UR - https://www.scopus.com/pages/publications/85047094931

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ER -

Broadband circularly polarized slot antenna loaded by a multiple-circular-sector patch

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Keywords

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