Scan Blindness Elimination Using Composite Defected Ground Structures and Edge-coupled Split Ring Resonators

Authors

  • Ming-Chun Tang The Institute of Applied Physics University of Electronic Science and Technology of China, Chengdu, 610054, China
  • Shaoqiu Xiao The Institute of Applied Physics University of Electronic Science and Technology of China, Chengdu, 610054, China
  • Chaolei Wei The Institute of Applied Physics University of Electronic Science and Technology of China, Chengdu, 610054, China
  • Bingzhong Wang The Institute of Applied Physics University of Electronic Science and Technology of China, Chengdu, 610054, China
  • Chang-Jin Li Engineering and Technology College of Neijiang Normal University Neijiang, 641112, China

Keywords:

Scan Blindness Elimination Using Composite Defected Ground Structures and Edge-coupled Split Ring Resonators

Abstract

A novel compact composite structure, composed of double-U shaped defected ground structure (DGS) and edge-coupled split ring resonator (E-SRR), is presented in this paper. The composite structure is integrated into microstrip array to reduce the interelement mutual coupling, with the aim to eliminate the scan blindness and improve the scanning performance. The three kinds of two-element arrays (without composite structure, with only DGS and with composite structure) are thoroughly simulated, measured, and compared. The results show that, the reduction in mutual coupling of 11 dB between elements in E-plane is obtained with the use of composite structure. It is worth mentioning that, approximately 2dB gain improvement and 2.4dB side lobe suppression are both attained, in comparison with the array with only DGSs. Finally, the scan properties of three kinds of infinite microstrip phased arrays are studied by the waveguide simulator method. The results indicate that the scan blindness in an infinite microstrip phased array can be well eliminated by virtue of the effect of the proposed composite structures, in accordance with results obtained by active patterns of the centre element in 9×5 array.

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Published

2022-05-02

How to Cite

[1]
M.-C. . Tang, S. . Xiao, C. . Wei, B. . Wang, and C.-J. . Li, “Scan Blindness Elimination Using Composite Defected Ground Structures and Edge-coupled Split Ring Resonators”, ACES Journal, vol. 26, no. 7, pp. 572–583, May 2022.

Issue

2011: Vol 26 Iss 7

Section

Articles