Metamaterial Loaded Microstrip Patch Antennas

Metamaterial Loaded Microstrip Patch Antennas

J.G. Joshi (Government Polytechnic, India) and Shyam S. Pattnaik (National Institute of Technical Teachers Training and Research (NITTTR), India)
Copyright: © 2015 |Pages: 20
DOI: 10.4018/978-1-4666-5888-2.ch613
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Background Of Metamaterial And Its Importance In Microstrip Patch Antennas

Most recently, antenna researchers have verified and evidenced an innovative approach to overcome the limitations of microstrip patch antennas by using metamaterial. In 1968, the Russian physicist Viktor Veselago theoretically predicted that metamaterial possesses negative values of magnetic permeability (μ) and/or electric permittivity (ε) (Veselago, 1968). Metamaterial structure consists of split ring resonators (SRRs) to produce negative permeability and thin wire elements to generate negative permittivity Metamaterial possesses both negative permeability (μ) and/or negative permittivity (ε). Hence, they are termed as double negative (DNG) or single negative (SNG) metamaterials. In SNG metamaterials either single of the property i.e. permeability or permittivity is negative. The permeability (μ) negative materials are called mu negative (MNG) and permittivity (ε) negative materials are termed as epsilon negative (ENG) materials. Researchers have reported the metamaterial properties of different SRRs. (Veselago, 1968; Pendry, 1999; Smith, 2005; Ziolkowski, 2003; Bilotti, 2007; Marques, 2003).

Key Terms in this Chapter

Double Negative (DNG) Metamaterials: Metamaterials that possesses both negative permeability and permittivity.

Single Negative (SNG) Metamaterials: Metamaterials which possesses either negative permeability or negative permittivity.

Double Positive (DPS) Materials: Materials of both positive permeability and permittivity.

Mu Negative (MNG) Metamaterials: Metamaterials with negative permeability (mu).

Epsilon Negative (ENG) Metamaterials: Metamaterials having negative permittivity (epsilon).

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