# Application of Magneto-Dielectric Materials in Antenna Design

• Min Kyeong-Sik (Department of Radio Sciences & Engineering, College of Engineering, Korea Maritime University) ;
• Tran Viet-Hong (Department of Radio Sciences & Engineering, College of Engineering, Korea Maritime University)
• Published : 2006.09.01
• 77 11

#### Abstract

In this paper, magneto-dielectric material is proposed to use for minimizing antenna size. One examle of very small antenna is presented to prove this with antenna's area of $0.078\lambda_0\times0.016\lambda_0$, and just moderate values of permittivity and permeability while the return loss can reach - 38 dB at the resonant frequency. The parameters of dielectric material for that best performance are $\varepsilon_r=1.71-j0.004$, and $\mu_r=2.39-j2.58$. Besides, this material also has ability to control the trade-off between the gain and bandwidth while keeping the antenna size unchanged.

#### Keywords

Magneto-Dielectric Material;Small Antenna Design;Relation Between Gain And Bandwidth

#### References

1. H. A. Wheeler, 'Fundamental limitations of small antennas', Proceedings of the IRE, vol. 35, pp. 1479-1484, Dec. 1947 https://doi.org/10.1109/JRPROC.1947.226199
2. Hossein Mosallaei, Kamal Sarabandi, 'Magnetodielectric materials in electromagnetics: Concept and applications', IEEE Transactions on Antenna and Propagation, vol. 52, no. 6, pp. 1558-1567, Jun. 2004 https://doi.org/10.1109/TAP.2004.829413
3. R. F. Harrington, 'Effect of antenna size on gain, bandwidth, and efficiency', Journal of Research of the National Bureau of Standards-D, Radio Propagation, vol. 64D, no. 1, pp. 1-12, Jan.-Feb. 1960 https://doi.org/10.6028/jres.064D.003
4. L. J. Chu, 'Physical limitation on omni-directional antennas', Journal of Applied Physics, vol. 19, pp. 1163-1175, Dec. 1948 https://doi.org/10.1063/1.1715038
5. J. T. Aberle, 'A figure-of-merit for evaluating the gain-bandwidth product of microstrip patch antennas', IEEE Africon Conference Digest(Invited Paper), pp. 1001-1004, Sep. 1999
6. Ho-Yong Kim et al., 'Triple-band compact chip antenna using stacked meander line structure for GPS/PCS/Satellite DMB services', Journal of The Korea Electromagnetic Engineering Society, vol. 16, no. 2, pp. 211-216, Feb. 2005
7. Gyey-Taek Jeong et al., Design of a meander type microstrip antenna in the 5 GHz Band', Journal of The Korea Communication Society, vol. 29, no. 9A, pp. 1083-1090, Sep. 2004
8. R. Hansen, M. Burke, 'Antennas with magnetodielectric materials', Micro. Opt. Tech. Letter, vol. 26, no. 2, pp. 75-78, Jul. 2000 https://doi.org/10.1002/1098-2760(20000720)26:2<75::AID-MOP3>3.0.CO;2-W
9. Kent Smith, 'Antennas for low power applications', RFM App. Notes
10. Kin-Lu Wong, Compact and Broadband Microstrip Antennas, John Wiley & Sons, Inc., 2002