PIER Letters
Progress In Electromagnetics Research Letters
ISSN: 1937-6480
Home | Search | Notification | Authors | Submission | PIERS Home | EM Academy
Home > Vol. 67 > pp. 97-102


By X. Luo, J. Yuan, and K. Chen

Full Article PDF (1,607 KB)

A compact directional MIMO antenna operating in 2.4 and 5 GHz wireless local area network (WLAN) bands is presented. The compactness of the proposed multiple-input multiple-output (MIMO) antenna can be attained through using miniaturized antenna elements and meanwhile employing an extremely narrow edge-to-edge inter-element space (3 mm). Two novel miniaturized planar inverted-F antenna (PIFA) elements which share a common ground are designed, and each element has a dimension of 31 mm × 17 mm and a profile of 4.2 mm. By etching three slots on the ground, the port isolation can be significantly enhanced, which can even reach a maximum of 54 dB at 2.45 GHz. A desirable directional radiation pattern is obtained, and the calculated envelope correlation coefficient is better than 0.01.

X. Luo, J. Yuan, and K. Chen, "Compact and Low Profile MIMO Antenna for Dual-WLAN-Band Access Points," Progress In Electromagnetics Research Letters, Vol. 67, 97-102, 2017.

1. Foschini, G. J., "Layered space-time architecture for wireless communication in a fading environment when using multi-element antennas," Bell Labs Technical Journal, Vol. 1, No. 2, 41-59, 1996.

2. Varzakas, P., "Average channel capacity for Rayleigh fading spread spectrum MIMO systems," International Journal of Communication Systems, Vol. 19, No. 10, 1081-1087, 2006.

3. Zhang, S., S. N. Khan, and S. He, "Reducing mutual coupling for an extremely closely-packed tunable dual-element PIFA array through a resonant slot antenna formed in-between," IEEE Transactions on Antennas and Propagation, Vol. 58, No. 8, 2771-2776, 2010.

4. Li, G., H. Zhai, L. Li, C. Liang, R. Yu, and S. Liu, "AMC-loaded wideband base station antenna for indoor access point in MIMO system," IEEE Transactions on Antennas and Propagation, Vol. 63, No. 2, 525-533, 2015.

5. Su, S. W., "High-gain dual-loop antennas for MIMO access points in the 2.4/5.2/5.8 GHz bands," IEEE Transactions on Antennas and Propagation, Vol. 58, No. 7, 2412-2419, 2010.

6. Su, S. W. and C.-T. Lee, "Low-cost dual-loop-antenna system for dual-WLAN-band access points," IEEE Transactions on Antennas and Propagation, Vol. 59, No. 5, 1652-1659, 2011.

7. Li, H., J. Xiong, Z. Ying, and S. L. He, "Compact and low pro le co-located MIMO antenna structure with polarisation diversity and high port isolation," Electronics Letters, Vol. 46, No. 2, 108-110, 2010.

8. Mallahzadeh, A. R., S. Es'haghi, and A. Alipour, "Design of an E-shaped MIMO antenna using IWO algorithm for wireless application at 5.8 GHz," Progress In Electromagnetics Research, Vol. 90, 187-203, 2009.

9. Farsi, S., H. Aliakbarian, D. Schreurs, and B. Nauwelaers, "Mutual coupling reduction between planar antennas by using a simple microstrip U-section," IEEE Antennas and Wireless Propagation Letters, Vol. 11, No. 4, 1501-1503, 2012.

10. Qi, H., L. Liu, X. Yin, H. Zhao, and W. J. Kulesza, "Mutual coupling suppression between two closely spaced microstrip antennas with an asymmetrical coplanar strip wall," IEEE Antennas and Wireless Propagation Letters, Vol. 15, 191-194, 2016.

11. Zhang, X.-Y., X. Zhong, B. Li, and Y. Yu, "A dual-polarized MIMO antenna with EBG for 5.8 GHz WLAN application," Progress In Electromagnetics Research Letters, Vol. 51, 15-20, 2015.

12. Blanch, S., J. Romeu, and I. Corbella, "Exact representation of antenna system diversity performance from input parameter description," Electronics Letters, Vol. 39, No. 9, 705-707, 2003.

© Copyright 2010 EMW Publishing. All Rights Reserved