Authors: Alpha Osman Bah
Source:FERMAT, Volume 26, Communication 2, Mar.-Apr., 2018
Abstract: A wide bandwidth, low profile, double sided, wide angle impedance matching metasurface is reported. It alleviates the well-known problem of impedance mismatch caused by mutual coupling when an array is in its scan mode. Each unit cell of the metasurface contains two multi-resonant, tightly-coupled unequal arm Jerusalem cross elements on the top and bottom sides of a thin substrate. Each element consists of two orthogonal capacitively loaded strips. The wide bandwidth of the metasurface is achieved by tightly coupling these multi-resonant elements. The metasurface is capable of facilitating wide angle scanning over a 6:1 impedance bandwidth without the need for bulky dielectrics or multi-layered structures.
Index Terms: Bandwidth, metasurfaces, phased arrays, tightly coupled arrays, wide angle impedance matching, wide bandwidth arrays.
View PDFDesign and Analysis of a Wide Angle Impedance Matching Metasurface for Wideband Antenna Arrays