volume | PIER Journals

Abstract

In this paper, a novel electromagnetic bandgap structure (EBGs) is proposed, which is similar to the mushroom-like EBG. By introducing double reverse split rings (RSR) into the square patch, the size of EBG cell is reduced by 30%, and the bandgap achieves bandwidth about 65%. A fractal microstrip antenna is implemented using the EBGs as a ground plane, and the measured results show that the reduction in the surface wave level is remarkable. Compared with the reference antenna at 5 GHz, an approximately 8 dB improvement of the return loss is achieved, and the back lobe is reduced by 10 dB in E plane and 8.73 dB in H plane at the resonant frequency, respectively. The front-back ratios of the antenna have significantly increased from 4.9 GHz to 5.2 GHz.

1. Yablonovitch, E., "Photonic band-gap structure," J. Opt. Soc. Am. B: Opt. Phys., Vol. 10, 283-295, 1993.
doi:10.1364/JOSAB.10.000283 Google Scholar

2. Radisic, V., Y. Qian, R. Coccioli, and T. Itoh, "Novel 2-D photonic bandgap structure for microstrip lines," IEEE Transactions on Microwave and Guided Wave Letters, Vol. 8, No. 2, 69-71, 1998.
doi:10.1109/75.658644 Google Scholar

3. Fan, Y. and Y. Rahmat-Samii, "Reflection phase characterizations of the EBG ground plane for low profile wire antenna applications," IEEE Transactions on Antennas and Propagation, Vol. 51, No. 10, 2691-2703, 2003.
doi:10.1109/TAP.2003.817559 Google Scholar

4. Coccioli, R., W. R. Deal, and T. Itoh, "Radiation characteristics of a patch antenna on a thin PBG substrate," IEEE Transactions on Antennas and Propagation Society International Symposium, 1998, Vol. 2, 656-659, 1998.

5. Dan, Q. and L. Shafai, "The performance of microstrip patch antennas over high impedance EBG substrates within and outside its bandgap," IEEE International Symposium on Microwave Antenn, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005, 423-426, 2005.

6. Qi, L., H. M. Salgado, A. M. Moura, and J. R. Pereira, "Dual-band antenna design using an EBG artificial magnetic conducto ground plane," IEEE Transactions on Antennas and Propagation Conference, 2008. LAPC 2008. Loughborough, 217-220, 2008.

7. Sievenpiper, D., Z. Lijun, R. F. J. Broas, N. G. Alexopolous, and E. Yablonovitch, "High-impedance electromagnetic surfaces with a forbidden frequency band," IEEE Transactions on Microwave Theory and Techniques, Vol. 47, No. 11, 2059-2074, 1999.
doi:10.1109/22.798001 Google Scholar

8. Coccioli, R., F.-R. Yang, K.-P. Ma, and T. Itoh, "Aperture-coupled patch antenna on UC-PBG substrate," IEEE Transactions on Microwave Theory and Techniques, Vol. 47, 2123-2130, 1999.
doi:10.1109/22.798008 Google Scholar

9. Li, Y., M. Fan, F. Chen, J. She, and Z. Feng, "A novel compact electromagnetic-bandgap (EBG) structure and its applications for microwave circuits," IEEE Transactions on Microwave Theory and Techniques, Vol. 53, 183-190, 2005. Google Scholar

10. Zheng, Q.-R., B.-Q. Lin, Y.-Q. Fu, and N.-C. Yuan, "Characteristics and applications of a novel compact spiral electromagnetic band-gap (EBG) structure," Journal of Electromagnetic Waves and Applications, Vol. 21, No. 2, 199-213, 2007.
doi:10.1163/156939307779378844 Google Scholar

11. Sievenpiper, D., High-impedance electromagnetic surfaces, Ph.D. Dissertation, Department of Electrical Engineering, University of California at Los Angeles, CA, 1999.

12. McVay, J. and N. Engheta, "High impedance metamaterial surfaces using Hilbert-curve inclusions," IEEE Microw. Wireless Co. Lett., Vol. 14, No. 3, 130-132, 2004.
doi:10.1109/LMWC.2003.822571 Google Scholar

13. Fan, R. H. M. Y., Z. H. Feng, and X. X. Zhang, "Advance in 2D-EBG research," J. Infrared Millimeter Waves, Vol. 22, No. 2, 2003. Google Scholar

Dr. Hai Rong Cheng

Dr. Qiuyu Song

Dr. Yu-Chun Guo

Dr. Xiao-Qun Chen

Professor Xiao-Wei Shi