Abstract
This paper presents a new concept to implement a tunable filter metamaterial with dual negative refraction composed of ferrite slabs and metallic resonators, including split-ring resonators (SRR), and short wire pairs. The ferrite slabs under an applied magnetics bias provide one magnetic resonance frequency band and the metallic resonators provide another one. The continuous wires within the metamaterials provide the negative permittivity in a wide frequency band covering the two magnetic resonance bands. This type of metamaterialis analyzed in detail, and tunable stop band filters are successfully designed. The effective electromagnetic parameters obtained from the simulation of the S-parameters indicate that metamaterial exhibit negative refraction bands, which can be shifted by changing the magnetic bias.
Highlights
Metamaterial is one type of material who possesses abnormal property that not found in nature which has opened a promising realm for physics as well as for engineering [1]
This paper presents a new concept to implement a tunable filter metamaterial with dual negative refraction composed of ferrite slabs and metallic resonators, including split-ring resonators (SRR), and short wire pairs
We present basic types of tunable dual-band metamaterial composed of ferrite slabs and resonators, including SRR, the main goal of this work is the conception of tunable metamaterial filter based on dual band of ferrite [5,6]
Summary
Metamaterial is one type of material who possesses abnormal property that not found in nature which has opened a promising realm for physics as well as for engineering [1]. From the original work of negative refraction in Microwave frequency based on simultaneously negative effective permittivity and permeability to recent research on electromagnetic (EM), metamaterial has generated great interests with the potential to manipulate EM waves [2,3]. Particular dual-band and multi-band metamaterials have been presented for multi frequency applications. It has shown a dual-band and a multi-band metamaterial at microwave frequencies consisting of hexagonal SRR with asymmetric defects and dendritic structures, respectively [5]. We present basic types of tunable dual-band metamaterial composed of ferrite slabs and resonators, including SRR, the main goal of this work is the conception of tunable metamaterial filter based on dual band of ferrite [5,6]. The continuous wires within the metamaterials provide the negative permittivity frequency band covering the above two magnetic resonance bands
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