A New Design of a Band pass Filter at 2.45 GHz Based on Microstrip Line Using the Property of the Double Negative Metamaterials

Band pass filters plays a significant role in wireless communication systems. Transmitted and received signals have to be filtered at a certain center frequency with a specific bandwidth. In this paper, a new microstrip filter pass band at 2.45 GHz is presented; the filter structure is based on the microstrip line with a metamaterial structure, which is assigned on simple rectangular resonators and ribbons. The aim of this work is to study the behavior of the metamaterials structures characterized simultaneously by negative permeability and permittivity at frequency 2.45 GHz and their impact to improve the performances of the transmission line structures. The description of the permittivity and permeability is realized by the Nicolson-Ross-Weir method (NRW) and reported by the software simulation CST.