Effect of Metal and Magnetic Slab on Radiation Characteristics of Monopole Antenna

Wen-Cheng Lai, Ching-Ling Wu

Department of Electronic Engineering, Ming Chi University of Technology, New Taipei city.

DOI: 10.4236/jpee.2015.34036                

Abstract

The effect of metal and magnetic slab on the radiation characteristic of monopole antenna is studied in this paper. The presence of metal slab changes the antenna radiation pattern and it also increases the gain up to 4.6 dB. The radiation characteristic of monopole antenna is determined by the separation distance between planar monopole and metal slab. In addition, magnetic slab also changes the antenna radiation pattern and it also increases the gain up to 3 dB. Metal slab makes antenna generate reflection, but magnetic slab makes antenna generate refraction is their difference. As to the application slab, the initial pattern of the antenna without materials was omnidirectional. However, when the materials were added, its pattern would change, making the antenna to have other usages and transition effect. They will influence electromagnetic in power systems.

Keywords

Metal Slab, Magnetic Slab, Monopole Antenna, Radiation Pattern, Power Systems

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Anagnostou, D., Zheng, G., Chryssomallis, M., Lyke, J., Ponchak, G., Papapolymerou, J. and Christodoulou, C. (2003) Design, Fabrication, and Measurements of an RF-MEMS-Based Self-Similar Reconfigurable Antenna. Proceedings of the 2003 IEEE International Symposium on Circuits and Systems, 54, 422-432.
[2]	Huff, G.H. and Bernhard, J.T. (2006) Integration of Packaged RF MEMS Switches with Radiation Pattern Reconfigurable Square Spiral Microstrip Antennas. IEEE Transactions on Antennas and Propagation, 54, 464-469. http://dx.doi.org/10.1109/TAP.2005.863409
[3]	Grau, A., Romeu, J., Lee, M.-J., Blanch, S., Jofre, L. and Flaviis, F.D. (2010) A Dual-Linearly-Polarized MEMS-Re- configurable Antenna for Narrowband MIMO Communication Systems. IEEE Transactions on Antennas and Propagation, 58, 4-17. http://dx.doi.org/10.1109/TAP.2009.2036197
[4]	Nikolaou, S., Bairavasubramanian, R., Lugo, C., Carrasquillo, I., Thompson, D., Ponchak, G., Papapolymerou, J. and Tentzeris, M. (2006) Pattern and Frequency Reconfigurable Annular Slot Antenna Using PIN Diodes. IEEE Transactions on Antennas and Propagation, 54, 439-448. http://dx.doi.org/10.1109/TAP.2005.863398
[5]	Jin, N., Yang, F. and Rahmat-Samii, Y. (2004) A Novel Reconfigurable Patch Antenna with Both Frequency and Polarization Diversities for Wireless Communications. Proceedings of IEEE Antennas and Propagation Society International Symposium, 2, 1796-1799.
[6]	Chen, R.-H. and Row, J.S. (2008) Single-Fed Microstrip Patch Antenna with Switchable Polarization. IEEE Transactions on Antennas and Propagation, 56, 922-926. http://dx.doi.org/10.1109/TAP.2008.919211
[7]	Aissat, H., Cirio, L., Grzeskowiak, M., Laheurte, J.-M. and Picon, O. (2006) Reconfigurable Circularly Polarized Antenna for Short-Range Communication Systems. IEEE Transactions on Microwave Theory and Techniques, 54, 2856- 2863. http://dx.doi.org/10.1109/TMTT.2006.875454
[8]	Huff, G.H., Feng, J., Zhang, S. and Bernhard, J.T. (2003) A Novel Radiation Pattern and Frequency Reconfigurable Single Turn Square Microstrip Spiral Antenna. IEEE Microwave and Wireless Components Letters, 13, 57-59. http://dx.doi.org/10.1109/LMWC.2003.808714
[9]	Bernhard, J.T. (2007) Reconfigurable Antenna: Synthesis Lectures on Antennas. Morgan & Claypool.
[10]	Lai, W.-C., Miao, D.-L. and Hsue, C.-W. (2009) Effect of Magnetic Layer on Radiation Characteristics of Monopole Antenna. 4th International Conference on Electromagnetic Near-Field Characterization and Imaging (ICONIC 2009), Taipei, 255-258.
[11]	Balanis, C.A. (1997) Antenna Theory, Analysis and Design. 2nd Edition, Wiley, New York.
[12]	Kong, S., Kim, J., Bae, B., Kim, J.J., Kim, S. and Kim, J. (2014) Electromagnetic Radiated Emissions from a Wireless Power Transfer System Using a Resonant Magnetic Field Coupling. International Symposium on Electromagnetic Compatibility, Tokyo, May, 406-409. http://dx.doi.org/10.1109/WPT.2014.6839613