Journal of Systems Engineering and Electronics ›› 2021, Vol. 32 ›› Issue (3): 559-565.doi: 10.23919/JSEE.2021.000047

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles     Next Articles

Single-layer angularly-stable bandpass frequency-selective surface with interdigital resonator

Xin MA1,*(), Yunzhe LIU1(), Guobin WAN1(), Aigang PAN2()   

  1. 1 School of Electronics and Information, Northwestern Polytechnical University, Xi’an 710129, China
    2 School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Received:2020-05-25 Online:2021-06-18 Published:2021-07-26
  • Contact: Xin MA E-mail:maxin1105@nwpu.edu.cn;1173474520@qq.com;gbwan@nwpu.edu.cn;panaigang@163.com
  • About author:|MA Xin was born in 1984. She received her Ph.D. degree in electronic science and technology from Northwestern Polytechnical University (NWPU), Xi’an, China, in 2014. From 2018 to 2019, she was a visiting scholar with the Department of Electronics and Nanoengineering, Aalto University, Aalto, Finland. She is currently an associate professor of the Department of Electronics and Information, NWPU. Her current research interests include frequency selective surfaces and metasurface waveguides. E-mail: maxin1105@nwpu.edu.cn||LIU Yunzhe was born in 1997. He received his bachelor’s degree in electronic science and technology from Northwestern Polytechnical University (NWPU), Xi’an, China, in 2019. He is studying for his master’s degree in the School of Electronic Information, NWPU. His current research interest is numerical analysis of electromagnetic scattering. E-mail: 1173474520@qq.com||WAN Guobin was born in 1967. He is now a professor and doctoral supervisor of the School of Electronic Information, Northwestern Polytechnical University. His main research interests include analysis and design of radome, antenna theory and numerical analysis of electromagnetic scattering. E-mail: gbwan@nwpu.edu.cn||PAN Aigang was born in 1984. He received his Ph.D. degree in aeronautical and astronautical manufacturing engineering from Northwestern Polytechnical University, Xi’an, China, in 2015. He is now a post doctor in the School of Mechatronical Engineering, Beijing Institute of Technology. His main research interests include fabrication of metallic array and phase change material. E-mail: panaigang@163.com
  • Supported by:
    This work was supported by the Aeronautical Science Foundation of China (2017ZF37005) and the National Natural Science Foundation of China (62001389)

Abstract:

A miniaturized periodic element for constructing bandpass frequency selective surface (FSS) independent of incident angles and polarizations is presented. An interdigital resonator (IR) with one extending finger to connect the two separate parts of the interdigital capacitor is explored to achieve parallel resonance. The equivalent circuit model (ECM) and electric field distributions are introduced to explain frequency performance of FSS. The whole structure has only one layer and possesses a low profile (a thickness of 0.001 5 $\lambda $ , where $\lambda $ represents the resonant wavelength in free space) as well as a small size (0.03 $\lambda $ ×0.03 $\lambda $ ). This FSS performs as a spatial bandpass filter which exhibits a great angular stability with incident angles ranging from 0° to 80° for both transverse electric (TE) and transverse magnetic (TM) polarizations. As an example, a prototype of one proposed FSS is fabricated and tested. The measured results show a good angular stability.

Key words: frequency selective surface (FSS), angular stability, bandpass filter