A Dual-Band High-Gain Subwavelength Cavity Antenna with Artificial Magnetic Conductor Metamaterial Microstructures

Lu, Guang; Yan, Fabao; Zhang, Kaiyuan; Zhao, Yunpeng; Zhang, Lei; Shang, Ziqian; Diao, Chao; Zhou, Xiachen

doi:10.3390/mi13010058

Open AccessArticle

A Dual-Band High-Gain Subwavelength Cavity Antenna with Artificial Magnetic Conductor Metamaterial Microstructures

by

Guang Lu

^1,2,*

,

Fabao Yan

^2,3,*

,

Kaiyuan Zhang

¹,

Yunpeng Zhao

¹,

Lei Zhang

^1,2,

Ziqian Shang

^1,2,

Chao Diao

¹ and

Xiachen Zhou

¹

School of Space Science and Physics, Shandong University at Weihai, Weihai 264209, China

²

Laboratory for Electromagnetic Detection (LEAD), Institute of Space Sciences, Shandong University at Weihai, Weihai 264209, China

³

School of Mechanical, Electrical & Information Engineering, Shandong University at Weihai, Weihai 264209, China

^*

Authors to whom correspondence should be addressed.

Micromachines 2022, 13(1), 58; https://doi.org/10.3390/mi13010058

Submission received: 6 December 2021 / Revised: 23 December 2021 / Accepted: 28 December 2021 / Published: 30 December 2021

(This article belongs to the Section E: Engineering and Technology)

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Abstract

This paper presents dual-band high-gain subwavelength cavity antennas with artificial magnetic conductor (AMC) metamaterial microstructures. We developed an AMC metamaterial plate that can be equivalent to mu-negative metamaterials (MNMs) at two frequencies using periodic microstructure unit cells. A cavity antenna was constructed using the dual-band AMC metamaterial plate as the covering layer and utilizing a feed patch antenna with slot loading as the radiation source. The antenna was fabricated with a printed circuit board (PCB) process and measured in an anechoic chamber. The |S₁₁| of the antenna was −26.8 dB and −23.2 dB at 3.75 GHz and 5.66 GHz, respectively, and the realized gain was 15.2 dBi and 18.8 dBi at two resonant frequencies. The thickness of the cavity, a sub-wavelength thickness cavity, was 15 mm, less than one fifth of the long resonant wavelength and less than one third of the short resonant wavelength. This new antenna has the advantages of low profile, light weight, dual-frequency capability, high gain, and easy processing.

Keywords: metamaterial; sub-wavelength cavity antenna; artificial magnetic conductor; dual-band; high gain

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MDPI and ACS Style

Lu, G.; Yan, F.; Zhang, K.; Zhao, Y.; Zhang, L.; Shang, Z.; Diao, C.; Zhou, X. A Dual-Band High-Gain Subwavelength Cavity Antenna with Artificial Magnetic Conductor Metamaterial Microstructures. Micromachines 2022, 13, 58. https://doi.org/10.3390/mi13010058

AMA Style

Lu G, Yan F, Zhang K, Zhao Y, Zhang L, Shang Z, Diao C, Zhou X. A Dual-Band High-Gain Subwavelength Cavity Antenna with Artificial Magnetic Conductor Metamaterial Microstructures. Micromachines. 2022; 13(1):58. https://doi.org/10.3390/mi13010058

Chicago/Turabian Style

Lu, Guang, Fabao Yan, Kaiyuan Zhang, Yunpeng Zhao, Lei Zhang, Ziqian Shang, Chao Diao, and Xiachen Zhou. 2022. "A Dual-Band High-Gain Subwavelength Cavity Antenna with Artificial Magnetic Conductor Metamaterial Microstructures" Micromachines 13, no. 1: 58. https://doi.org/10.3390/mi13010058

APA Style

Lu, G., Yan, F., Zhang, K., Zhao, Y., Zhang, L., Shang, Z., Diao, C., & Zhou, X. (2022). A Dual-Band High-Gain Subwavelength Cavity Antenna with Artificial Magnetic Conductor Metamaterial Microstructures. Micromachines, 13(1), 58. https://doi.org/10.3390/mi13010058

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A Dual-Band High-Gain Subwavelength Cavity Antenna with Artificial Magnetic Conductor Metamaterial Microstructures

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