An ultra-wideband frequency selective surface with high stability for electromagnetic stealth

Abstract

Aiming at the problems of low-frequency coverage, angle and polarization instability of ultra-wideband (UWB) frequency selective surface (FSS) in practical application, this paper introduces the additional circular parasitic patches and two-stage rectangular bent grids to enhance coupling, miniaturize geometry size, broaden bandwidth and suppress the drift of resonance frequencies based on the construction of a FSS unit cell by using a basic circular patch and a Jerusalem cross grid. The simulated and measured results show that the bandwidth of the FSS is 13.47 GHz, and its fractional bandwidth is 140.53%, which fully covers the UWB band (3.1–10.6 GHz). The UWB FSS has the flat transmission passband, and high transmission characteristics, and maintains stable performance at large incident angles and different polarization modes. The size of the UWB FSS unit cell is 0.25 λc × 0.25 λc × 0.12 λc. Therefore, the UWB FSS can be applied to electromagnetic stealth and the related fields of UWB communications.

KEYWORDS:

• Frequency selective surface
• ultra-wideband
• miniaturization
• high stability
• high wave-transmissivity

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (No.61875054, No.61905074), the Foundation of Science and Technology on Communication Networks Laboratory, China (No.6142104190315), Hunan Provincial Natural Science Foundation of China (No. 2020JJ4318, No.2019JJ50 170, No.2020JJ7007), and the Foundation of National key Laboratory for Complex Systems Simulation, China (No.XM2020XT1004).

Notes on contributors

Zhijun Tang

Zhijun Tang received his PhD degree in electrical engineering at Hunan University in 2010. His main research interests are UWB/MIMO antenna design, FSS design, intelligent information network and optical communication.

Jie Zhan

Jie Zhan received his PhD degree in electronics at Hunan University in 2011. His main research interests are wireless communication technology.

Bin Zhong

Bin Zhong received his PhD degree in communication engineering at University of science and technology Beijing in 2014. His current research interests include cooperative communications.

Long Chen

Long Chen received his PhD degree in communication engineering at Fudan University in 2017. His current research interests include optical fiber communication technology.

Guocai Zuo

Guocai Zuo received her master's degree in software engineering at Hunan University in 2010. Her current research interests include computer vision and deep learning.