Top Scientific Journal Publishes CUC Scholar’s Article in the Field of Electromagnetic Stealth

Associate researcher Su Jianxun and professor Li Zengrui from the School of Information Engineering of CUC recently published their important research results in the field of electromagnetic stealth on top scientific journal Physical Review Applied, which is Ultrawideband Radar Cross-Section Reduction by a Metasurface Based on Defect Lattices and Multiwave Destructive Interference  The paper reveals the interaction mechanism of multiple electromagnetic waves in an ultra-wide frequency band, and proposes a new physical mechanism of secondary destructive interference. For the first time, the 10dB radar cross-section reduction bandwidth exceeds 4 octaves, reaching 6.76 octaves.

This is the first time that CUC scholar’s article published by this journal. Associate researcher Su Jianxun is the first author, professor Li Zengrui is the corresponding author, and CUC is the first author and corresponding author unit. 

Electromagnetic stealth technology has always been a hot research field worldwide. As a traditional method, electromagnetic cancellation technology can effectively reduce the target's radar cross section in a certain frequency band to achieve good stealth performance. However, its bandwidth is limited and difficult to expand. The research conducted by CUC’s teachers breaks the traditional way of thinking, and it puts forward the theory that the defect grid structure can generate amplitude-phase regulated waves. The variable layer’s thick structure can effectively solve the problem of the bandwidth blind zone where the periodic structures such as the frequency selective surface (FSS), the electronic band gap (EBG), and the artificial magnetic conductor (AMC) coexist. Based on the field superposition principal, multi-wave destructive interference technique is proposed, and it also reveals that the interaction of multiple electromagnetic waves can greatly enhance the secondary destructive interference ability of backscattered waves. Particle Swarm Optimization (PSO) contributes to the selection and optimization of multiple periodic units, which greatly improves the performance and bandwidth of electromagnetic stealth. This work can be extended to the field of optics and acoustics, and is expected to be applied to the stealth design of military equipment.

The research results have been funded and supported by the National Natural Science Foundation of China, the National Defense Research Fund, the first Youth Talents Program of CUC, and the Young Teachers' Research and Improvement Program. Physical Review Applied is a famous international journal of applied physics. It is one of the few category 1 physics journals with an impact factor of 4.782. It is also the only comprehensive physics journal of applied physics of the American Physical Society (APS), which is complementary to the Physical Review Letters. Only more than 200 papers are published each year.

The link for the paper: https://doi.org/10.1103/PhysRevApplied.11.044088

Editor: Cao Wanchen, Arshad Bhatti