Bandwidth-enhanced circularly polarized crescent-shaped slot antenna via circular-patch loading

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

doi:10.3390/app9061117

Bandwidth-enhanced circularly polarized crescent-shaped slot antenna via circular-patch loading

Son Trinh-Van
, Youngoo Yang
, Kang Yoon Lee
, Yong Serk Kim
, Keum Cheol Hwang

Department of Electronic and Electrical Engineering

Sungkyunkwan University

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

10 Scopus citations

Abstract

This paper presents the crescent-shaped slot antenna loading of a circular patch that greatly enhances a 3 dB axial-ratio (AR) bandwidth. A bent feeding line was introduced and attached to a 50-Ω microstrip feed line to achieve circular polarization operation. By loading the circular patch into a crescent-shaped slot at a proper position, the 3 dB AR bandwidth is considerably broadened. An antenna prototype with overall dimensions of 50.8 × 50.8 × 0.5mm3 is experimentally demonstrated. Measurement results of the fabricated antenna showed a wide -10 dB reflection bandwidth of 92.33% (1.79-4.86 GHz) and a broad 3 dB AR bandwidth of 84.40% (1.89-4.65 GHz). The measured peak gain of the antenna was approximately 4.09 dBic at 2.9 GHz. Good agreement was also achieved between measurement and simulation results.

Original language	English
Article number	1117
Journal	Applied Sciences (Switzerland)
Volume	9
Issue number	6
DOIs	https://doi.org/10.3390/app9061117
State	Published - 2019

Keywords

Broad bandwidth
Circular polarization
Crescent-shaped slot antenna
Microstrip feed line
Patch loading

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10.3390/app9061117

Cite this

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title = "Bandwidth-enhanced circularly polarized crescent-shaped slot antenna via circular-patch loading",

abstract = "This paper presents the crescent-shaped slot antenna loading of a circular patch that greatly enhances a 3 dB axial-ratio (AR) bandwidth. A bent feeding line was introduced and attached to a 50-Ω microstrip feed line to achieve circular polarization operation. By loading the circular patch into a crescent-shaped slot at a proper position, the 3 dB AR bandwidth is considerably broadened. An antenna prototype with overall dimensions of 50.8 × 50.8 × 0.5mm3 is experimentally demonstrated. Measurement results of the fabricated antenna showed a wide -10 dB reflection bandwidth of 92.33\% (1.79-4.86 GHz) and a broad 3 dB AR bandwidth of 84.40\% (1.89-4.65 GHz). The measured peak gain of the antenna was approximately 4.09 dBic at 2.9 GHz. Good agreement was also achieved between measurement and simulation results.",

keywords = "Broad bandwidth, Circular polarization, Crescent-shaped slot antenna, Microstrip feed line, Patch loading",

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

note = "Publisher Copyright: {\textcopyright} 2019 by the authors.",

year = "2019",

doi = "10.3390/app9061117",

language = "English",

volume = "9",

journal = "Applied Sciences (Switzerland)",

issn = "2076-3417",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "6",

}

TY - JOUR

T1 - Bandwidth-enhanced circularly polarized crescent-shaped slot antenna via circular-patch loading

AU - Trinh-Van, Son

AU - Yang, Youngoo

AU - Lee, Kang Yoon

AU - Kim, Yong Serk

AU - Hwang, Keum Cheol

PY - 2019

Y1 - 2019

N2 - This paper presents the crescent-shaped slot antenna loading of a circular patch that greatly enhances a 3 dB axial-ratio (AR) bandwidth. A bent feeding line was introduced and attached to a 50-Ω microstrip feed line to achieve circular polarization operation. By loading the circular patch into a crescent-shaped slot at a proper position, the 3 dB AR bandwidth is considerably broadened. An antenna prototype with overall dimensions of 50.8 × 50.8 × 0.5mm3 is experimentally demonstrated. Measurement results of the fabricated antenna showed a wide -10 dB reflection bandwidth of 92.33% (1.79-4.86 GHz) and a broad 3 dB AR bandwidth of 84.40% (1.89-4.65 GHz). The measured peak gain of the antenna was approximately 4.09 dBic at 2.9 GHz. Good agreement was also achieved between measurement and simulation results.

AB - This paper presents the crescent-shaped slot antenna loading of a circular patch that greatly enhances a 3 dB axial-ratio (AR) bandwidth. A bent feeding line was introduced and attached to a 50-Ω microstrip feed line to achieve circular polarization operation. By loading the circular patch into a crescent-shaped slot at a proper position, the 3 dB AR bandwidth is considerably broadened. An antenna prototype with overall dimensions of 50.8 × 50.8 × 0.5mm3 is experimentally demonstrated. Measurement results of the fabricated antenna showed a wide -10 dB reflection bandwidth of 92.33% (1.79-4.86 GHz) and a broad 3 dB AR bandwidth of 84.40% (1.89-4.65 GHz). The measured peak gain of the antenna was approximately 4.09 dBic at 2.9 GHz. Good agreement was also achieved between measurement and simulation results.

KW - Broad bandwidth

KW - Circular polarization

KW - Crescent-shaped slot antenna

KW - Microstrip feed line

KW - Patch loading

UR - https://www.scopus.com/pages/publications/85063721410

U2 - 10.3390/app9061117

DO - 10.3390/app9061117

M3 - Article

AN - SCOPUS:85063721410

SN - 2076-3417

VL - 9

JO - Applied Sciences (Switzerland)

JF - Applied Sciences (Switzerland)

IS - 6

M1 - 1117

ER -

Bandwidth-enhanced circularly polarized crescent-shaped slot antenna via circular-patch loading

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Keywords

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