Compact Triple-Band S-Shaped Monopole Diversity Antenna for MIMO Applications
Keywords:
Diversity antenna, Multi-Output MultiInput (MIMO) applications, triple-band S-shaped monopoleAbstract
In this paper, a novel WLAN frequency range monopole antenna is designed and manufactured for MIMO applications. The proposed antenna consists of two L-shaped slots in the S-shaped radiating patch. In this structure, the S-shaped monopole antenna can create dual resonances within the WLAN frequency range. The placement of two L-shaped slots within the S-shaped monopole antenna creates an extra resonance and the desired resonant frequencies are obtained by adjusting the dimension of the S-shaped monopole and the Lshaped slots. The operating frequencies of the proposed antenna are 2.4/5.2/5.8 GHz, which covers WLAN systems. Also, the two elements array configuration of this S-shaped monopole antenna which can be used in MIMO with a very high isolation over three operational bands is studied. The prototypes of the proposed antenna have been constructed and studied experimentally. Good diversity performance, return loss and radiation pattern characteristics are obtained in the frequency band of interest. Simulated and measured results are presented to validate the usefulness of this small proposed antenna structure for MIMO applications.
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References
R. G. Vaghan and J. B. Andersen, “Antenna diversity in mobile communications,” IEEE Trans. on Veh. Techn., vol. 36, no. 4, pp. 149 172, Nov. 1987.
Y. S. Li, W. Li, and W. Yu, “A multi-band/UWB MIMO/diversity antenna with an enhanced isolation using radial stub loaded resonator,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 28, no. 1, pp. 8-20, Jan. 2013.
H. Oraizi and B. Rezaei, “Application of inductive loadings for the dual and broad banding of CPWfed ring antennas,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 27, no. 7, pp. 587-595, July 2012.
P. Wang, G. J. Wen, and Y. Huang, “Compact CPW-fed planar monopole antenna with tripleband operation for WLAN/WiMAX applications,” Applied Computational Electromagnetics Society (ACES) Journal, vol. 27, no. 8, pp. 691-696, Aug. 2012.
R. Rouhi, Ch. Ghobadi, J. Nourinia, and M. Ojaroudi, “Ultra-wideband small square monopole antenna with band notched function,” Microwave and Optical Tech. Letters, vol. 52, no. 8, Aug. 2010.
G. Chi, B. Li, and D. Qi, “Dual-band printed diversity antenna for 2.4/5.2 GHz WLAN application,” Microw. Opt. Technol. Lett., vol. 45, no. 6, pp. 561-563, June 2005.
S. A. Mohammad Nezhad and H. R. Hassani, “A novel triband E-shaped printed monopole antenna for MIMO application,” IEEE Antennas and Wireless Propagation Letters, vol. 9, pp. 576-579, 2010.
M. Ojaroudi, H. Ebrahimian, Ch. Ghobadi, and J. Nourinia, “Small microstrip-fed monopole printed monopole antenna for UWB applications,” Microwave and Optical Tech. Letters, vol. 52, no. 8, Aug. 2010.
M. P. Karaboikis, V. C. Papamichael, G. F. Tsachtsiris, C. F. Soras, and V. T. Makios, “Integrating compact printed antennas onto small diversity/MIMO terminals,” IEEE Trans. Antennas Propag., vol. 52, no. 7, pp. 2067-2078, July 2008.
M. Ojaroudi, S. A. Ghorashi, and N. Ojaroudi, “Design of triple-band S-shaped monopole antenna with a pair of L-shaped slots for MIMO applications,” GeMic, 2012.
Ansoft High Frequency Structure Simulation (HFSS), ver. 13, Ansoft Corporation, 2010.
M. Ojaroudi, Sh. Yzdanifard, N. Ojaroudi, and M. Nasser-Moghaddasi, “Small square monopole antenna with enhanced by using inverted T-shaped slot and conductor-backed plane,” IEEE Transactions on Antenna and Propagation, vol. 59, no. 2, pp. 670-674, Feb. 2011.
A. Ghazi, M. N. Azarmanesh, and M. Ojaroudi, “Muti-resonance square monopole antenna for ultra-wideband applications,” Progress In Electromagnetics Research C, vol. 14, pp. 103- 113, 2010.
T. Y. Wu, S. T. Fang, and K. L. Wong, “A printed diversity dual-band monopole antenna for WLAN operation in the 2.4 and 5.2 GHz bands,” Microwave Opt. Technol. Lett., vol. 36, no. 25, pp. 436-439, Apr. 2003.
