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Dual-band slot microstrip patch antennas with dual-radiation modes for wireless communication

Published online by Cambridge University Press:  31 July 2019

Guangwei Yang Open the ORCID record for Guangwei Yang [Opens in a new window] ,
Jianying Li ,
Jiangjun Yang  and
Zijian Xing
Guangwei Yang*
Affiliation:
School of Electrical and Information, Northwestern Polytechnical University (NWPU), Xi'an 710129, China Department of Electronic Systems, Aalborg University, 9920 Aalborg, Denmark
Jianying Li
Affiliation:
School of Electrical and Information, Northwestern Polytechnical University (NWPU), Xi'an 710129, China
Jiangjun Yang
Affiliation:
School of Electrical and Information, Northwestern Polytechnical University (NWPU), Xi'an 710129, China
Zijian Xing
Affiliation:
School of Electrical and Information, Northwestern Polytechnical University (NWPU), Xi'an 710129, China
*
Author for correspondence: Guangwei Yang, E-mail: gwyang086@gmail.com
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Abstract

In this paper, a novel compact dual-band microstrip patch antenna with dual-radiation modes is investigated. The proposed antenna consists of a rectangular ground plane, a U-shaped feed probe, and an H-shaped slot radiating patch. By adjusting the size of these structures, a dual-band antenna can be obtained. In the low-frequency band, the antenna can radiate one radiation beam with high gain. In the high-frequency band, the antenna can achieve monopole-like radiation pattern. Therefore, an antenna prototype is fabricated and measured for validation. Good agreement between the simulated and measured results is observed in this paper. The antenna's operating frequency ranges are 3.6–3.85 GHz in the low-frequency band and 5.1–6.1 GHz in the high-frequency band with the reflection coefficient less than −10 dB. At 3.7 GHz, the antenna radiate one beam with 8.8 dBi realized gain. At 5.5 GHz, it exhibits dual-radiation beams directed to −48 and 48° with 5.6 and 5.5 dBi realized gain in the xoz-plane and −48 and 48° with 2.9 and 3.0 dBi realized gain in the yoz-plane. Therefore, the proposed antenna is a good candidate for wireless communication systems.

Keywords

Dual-bandlow-profilemicrostrip antennamonopole-like patternsymmetrical radiation pattern
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 12 , Issue 2 , March 2020 , pp. 155 - 162
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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