Title :
Low RCS microstrip antenna using polarisation-dependent frequency selective surface
Author :
Yongtao Jia ; Ying Liu ; Hui Wang ; Shuxi Gong
Author_Institution :
Nat. Key Lab. of Antennas & Microwave Technol., Xidian Univ., Xi´an, China
Abstract :
A low radar cross-section (RCS) microstrip antenna is proposed. A polarisation-dependent frequency selective surface (PDFSS) structure is designed and used as the antenna ground. By properly etching the unit cells of the PDFSS with different orientations on the ground of the microstrip antenna, the RCS has been reduced in the angular range of -90 ° ≤ θ ≤ +90° in both the xoz-plane and the yoz-plane under the φ-polarised incident wave. The `Γ´ shape slots between the unit cells with different orientations are used to reduce their mutual coupling.
Keywords :
electromagnetic wave polarisation; frequency selective surfaces; microstrip antennas; radar antennas; radar cross-sections; Γ shape slots; φ-polarised incident wave; PDFSS; low RCS microstrip antenna; mutual coupling reduction; polarisation-dependent frequency selective surface; polarisation-dependent frequency selective surface structure; radar cross-section microstrip antenna;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.1003
