Miniaturization of Microstrip Patch Antenna Using Metamaterial as Substrate

Ratish Kumar1, Rakesh N. Tiwari1, Dr. Raman Sharma2 1Department of Electronics and Comm. Engineering

Bahra University, Shimla Hill, Solan, IndiaE-mail: dhimanratish1982@gmail.com

2Physics Department, Himachal Pradesh University, Summer hill, Shimla-171005

E-mail: bramans70@yahoo.co.in

Abstract: In this paper, I have explored a significant concept of designing the microstrip patch antenna using metamaterial as its substrate and tried to reduce the dimensions of the microstrip patch antenna. The novel design of the patch antenna can be used to enhance the gain as well as to reduce the reflection losses. Patch antennas are one of the most attractive antennas for integrated RF front end systems due to their compatibility with microwave integrated circuits. To fulfill the demand of integrated RF front end systems, this design of microstrip patch antenna give best results in the frequency range from 4.5 GHz to 8.0 GHz because metamaterial or we call it as double negative material shows the negative behavior of electric permittivity and magnetic permeability in this range. The proposed antenna simulations are performed by using CST Microwave Studio, a commercially available simulator done simulations based on finite difference time domain techniques where as the results for verifying the negative curves of electric permittivity and permeability are obtained by using MathCAD a mathematical tool.

Keywords: Patch antenna, metamaterial, electric permittivity and magnetic permeability.

Figure 1. Effective electric permittivity versus frequency. Figure 2. Effective magnetic permeability versus frequency.

REFERENCES

[1] Mohammad Tariqul Islam, Mohammed Nazmus Shakib, Norbahiah Misran, “High gain microstrip patch antenna”, European Journal of Scientific Research, ISSN 1450-216X, Vol. 32, No. 2 (2009), pp. 187-193, 2009.

[2] Gonca ÇAKIR, Levent SEVGİ, “Design, Simulation and tests of a low-cost microstrip patch antenna arrays for the wireless communication “Truk J. Elec Engin, Vol. 13, No. 1, 2005, © TÜBİTAK.

[3] V. G. Veselago, “The electrodynamics of substances with simultaneously negative values of µ and ε,” Sov. Phys. Usp., vol. 10, no. 4, pp.509–514, Jan.–Feb. 1968.