A Low-Profile Transmissive Metasurface for Transformation of Plane Wave to Contour Beam Pattern Using 4-Arm Spiral Element

IEEE Access

Shenheng Xu¹  Maokun Li¹  Fan Yang¹  Abdul Aziz² 

[1] Department of Electronic Engineering, Beijing National Research Center for Information Science and Technology, Tsinghua University, Beijing, China;Department of Information and Communication Engineering, The Islamia University of Bahawalpur, Bahawalpur, Pakistan;

关键词: Alternating projection method (APM);    contour beam;    low profile;    pattern synthesis;    plane wave;    subwavelength element;   

DOI  :  10.1109/ACCESS.2021.3064703

来源: DOAJ

【 摘 要 】

A low-profile transmissive metasurface is proposed to synthesize contour beam pattern for a European region. A slot array feed is used to illuminate same size metasurface aperture with a plane wave at a near field distance of 24 mm. A two step optimization process is proposed to solve asymmetric and complicated pattern synthesis problem for transformation of plane wave to contour beam pattern using modified Alternating Projection Method (APM). A new subwavelength 4-arm spiral element is proposed to achieve desired performance for contour beam pattern synthesis in $Ku$ band centered at 12.5 GHz. A prototype of low profile transmissive metasurface is also fabricated and measured to verify its gain and bandwidth performance for contour beam pattern synthesis for the European region.

【 授权许可】

Unknown