Design of planar metallic microwave lenses for multiple spot-beam systems

Abstract:

This paper presents a microwave planar lens formed by a multilevel frequency selective surface (FSS) aimed at increasing the gain of a radially-corrugated horn antenna. The FSS is formed by three layers of square loops with open stubs. The phase compensation is achieved by shifting the resonant frequency of the unit cell. To do so, only the length of the stubs is suitably adjusted, leaving the rest of geometrical parameters unaltered from one cell to another. Results show an increment of 3.5 dB at 20.1 GHz in the directivity of the planar lens with respect to the feeding horn antenna.

Año de publicación:

2017

Keywords:

• square loop
• Frequency selective surfaces (FSS)
• low-profile antennas
• planar lens

Fuente:

scopus