Antenna Radiation Performance Enhancement Using Metamaterial Filter for Vehicle to Vehicle Communications Applications

摘要

In this work, an integrated metamaterial filter design in close proximity with monopole antenna is proposed for vehicular communication applications. A cylindrical screen formed by an array of metamaterial cells is designed to be reflective at 5.9 GHz in order to enhance antenna performance in intelligent vehicle transport systems. The unit cell proposed design based on Frequency Selective Surface (FSS) is made of a square loop element glued to a thin substrate to ensure a band-stop filtering behavior. This geometry is symmetrical providing the advantage of polarization independency and exhibiting angular stability up to 45? for both Transverse Electric (TE) and Transverse Magnetic (TM) modes. More importantly, antenna gain and directivity enhancement are illustrated when the cylindrical FSS layer is added at a small distance from the monopole radiator. Antenna bandwidth reduction is also detected due to the presence of the added FSS layer which is suitable for Vehicle to Vehicle (V2V) communications.