Different Feeding Techniques of Microstrip Patch Antennas with Spiral Defected Ground Structure for Size Reduction and Ultra-Wide Band Operation
- 1 Electronics Research Institute, Giza, Egypt.
- 2 Electronics Research Institute, Giza, Egypt.
Abstract
Different feeding techniques of microstrip patch antennas with different spiral defected ground structures are presented in this paper. The investigated structures illustrate some merits in designing multi-electromagnetic band-gap structures by adjusting the capacitance and changing the inductance through varying the width and length of spiral defected ground structure. Then by applying the three different spirals shapes (one, two and four arms) as the ground plane of microstrip patch antenna with different feeding techniques to create multi or ultra wide-band, improve the antenna gain and reduce the antenna size, it is found that the four arms spiral defected ground structure of microstrip patch antenna with offset feed gives good performance, electrical size reduction to about 75% as compared to the original patch size and ultra-wide bandwidth extends from 2 GHz up to 12 GHz with ?8 dB impedance bandwidth.
- R. Yang, Y. Xie, P. Wang and L. Li, “Microstrip Antennas with Left-Handed Materials Substrates,” Journal of Electromagnetic Waves and Applications, Vol. 20, No. 9, 2006, pp. 1221-1233. doi;10.1163/156939306777442908
- T. M. Grzegorczyk and J. A. Kong, “Review of LeftHanded Metamaterials: Evolution from Theoretical and Umerical Studies to Potential Applications,” Journal of Electromagnetic Waves and Applications, Vol. 20, No. 14, 2006, pp. 2053-2064. doi;10.1163/156939306779322620
- Q. Sui, C. Li, L. L. Li and F. Li, “Experimental Study of λ/4 Monopole Antennas in a Left-Handed Metamaterial,” Progress in Electromagnetics Research, Vol. 51, 2005, pp. 281-293. doi;10.2528/PIER04011202
- H. W. Liu, Z. F. Li and X. W. Sun, “A Novel Fractal Defected Ground Structure for Microstrip Line,” Journal of Active and Passive Electronic Devices, Vol. 1, 2006, pp. 311-316.
- C. S. Kim, J. S. Park, D. Ahn and J. B. Lim, “An Improved 1-D Periodic Defected Ground Structure for Microstrip Line,” IEEE Microwave and Wireless Components Letters, Vol. 10, No. 4, 2004, pp. 180-182.
- Z. Li and Y. Rahmat-Samii, “PBG, PMC, and PEC Ground Planes: A Case Study of Dipole Antennas,” IEEE Antennas and Propagation Society International Symposium, Vol. 2, 2000, pp. 674-677.
- C. S. Kim, J. S. Park, D. Ahn and J. B. Lim, “A Novel 1-D Periodic Defected Ground Structure for Planar Circuits,” IEEE Microwave and Guided Wave Letters, Vol. 10, No. 4, 2000, pp. 131-133. doi;10.1109/75.846922
- D. Nashaat, H. A. Elsadek, E. Abdallah, H. Elhenawy and M. F. Iskander, “Ultra-Wide Bandwidth 2 x 2 Microstrip Patch Array Antenna by Using Electromagnetic Band-Gap Structure (EBG),” IEEE Transactions on Antenns Propagat, Vol. 59, No. 5, 2011, pp. 1528-1538. doi;10.1109/TAP.2011.2123052
- F. Yang and Y. S. Rahmat, “Electromagnetic Band Gap Structures in Antenna Engineering,” Press Cambridge, New York, 2008.
- J. S. Lim, C. S. Kim, Y.-T. Lee, D. Ahn and S. Nam, “A Spiral Shaped Defected Ground Structure for Coplanar Waveguide,” IEEE Microwave and Wireless Components Letters, Vol. 12, No. 9, 2002, pp. 300-332.
- D. Nashaat, H. A. Elsadek, E. Abdallah, H. Elhenawy and M. F. Iskander, “Electromagnetic Analyses and an Equivalent Circuit Model of Microstrip Patch Antenna with Rectangular Defected Ground Plane,” IEEE Proceedings of Antennas and Propagation Society International Symposium, Charleston, 1-5 June 2009, pp. 1-4.