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A Dual-Band Microwave Filter Design for Modern Wireless Communication Systems

Xu, Jianchun and Bi, Ke and Zhai, Xiaojun and Hao, Yanan and Mcdonald-Maier, Klaus D (2019) 'A Dual-Band Microwave Filter Design for Modern Wireless Communication Systems.' IEEE Access, 7. 98786 - 98791. ISSN 2169-3536

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Abstract

Nowadays, modern communication system relies on the designs of high-performance devices to enhance communication effect for a high quality of life and smart city system. As a crucial signal processing step, microwave filter removes unwanted frequency components away from the received signal and enhances the useful ones. However, large loss, bulky size, and single-band greatly limit the practical applications in urban computing. Therefore, the filters with dual-band characteristic are highly desirable for modern wireless communication, such as device-to-device communication, environment monitoring, and automatic driving. In this paper, a dual-band microwave filter is designed and fabricated based on the theory of Mie-resonance extraordinary transmission. An electromagnetic wave cannot propagate through a subwavelength aperture drilled in a metallic film. By adding two dielectric cuboids of different sizes into the two apertures, two passbands appear in the frequency range of 10.0-12.0 GHz. In this range, the insertion loss is less than 0.4 dB, and 3-dB bandwidth is more than 48 MHz. Particularly, the two passband frequencies can be tuned by adjusting the size of the dielectric cuboids. This approach opens a way for designing tunable dual-band microwave bandpass filter, which is benefit for enhancing spectrum resource utilization.

Item Type: Article
Uncontrolled Keywords: Dual-band, extraordinary transmission, microwave filter, modern wireless communication
Divisions: Faculty of Science and Health > Computer Science and Electronic Engineering, School of
Depositing User: Elements
Date Deposited: 29 Apr 2020 14:51
Last Modified: 29 Apr 2020 14:51
URI: http://repository.essex.ac.uk/id/eprint/27389

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