Hostname: page-component-78c5997874-v9fdk Total loading time: 0 Render date: 2024-11-18T12:20:27.167Z Has data issue: false hasContentIssue false
  • English
  • Français

Compact modified circular patch quad-band MIMO antenna with high isolation and low correlation

Published online by Cambridge University Press:  12 January 2016

Chithradevi Rajagopal ,
Nafiza Noorullakhan ,
Sreeja Balakrishnapillai Suseela  and
Radha Sankararajan
Chithradevi Rajagopal
Affiliation:
Department of ECE, SSN College of engineering, Chennai, India. Phone: 09790915273
Nafiza Noorullakhan
Affiliation:
Department of ECE, SSN College of engineering, Chennai, India. Phone: 09790915273
Sreeja Balakrishnapillai Suseela*
Affiliation:
Department of ECE, SSN College of engineering, Chennai, India. Phone: 09790915273
Radha Sankararajan
Affiliation:
Department of ECE, SSN College of engineering, Chennai, India. Phone: 09790915273
*
Corresponding author:B. S. Sreeja Email: sreejabs@ssn.edu.in
Get access Rights & Permissions [Opens in a new window]

Abstract

A compact quad band slot antenna with high isolation suitable for multiple-input–multiple-output (MIMO) applications is developed. The quad bands are achieved by introducing slots in a modified, size reduced circular patch antenna. The single-antenna element consists of a substrate sandwiched between a modified circular patch with F shape slot, a feeder line and a via running between the radiating patch and the feeder line. The proposed design resonates at the frequencies of 1.8 GHz (1.7–1.88 GHz), 3.6 GHz (3.50–3.76 GHz), 5.4 GHz (5.25–5.38 GHz), and 7.2 GHz (7.15–7.35 GHz) covering the GSM II, WIMAX, wireless local area network (WLAN), and C-band applications, respectively. The independent tuning of frequency bands is achieved by varying the length of the slots. Orthogonally placed two- and four-element MIMO antenna system are fabricated, tested, and the measurement results are presented. The separation between each element is reduced to 0.085λ while introducing slotted and pulsed stubs to improve isolation between elements. A detailed analysis, including mutual coupling, low correlation, diversity gain, and total array reflection coefficient had been reported. The two- and four-element MIMO antennas achieved correlation as low as 0.005, mutual coupling ≤−15 dB, and diversity gain nearly 10 dB.

Keywords

CorrelationDiversity gainGSM IIWIMAXWLANC-bandHigh isolationMIMO antenna systemMutual couplingOrthogonal elementsQuad-band slot antennaTARC
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Issue 3 , April 2017 , pp. 581 - 590
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Elsadek, H.: Microstrip antennas for mobile wireless communication systems, in Mobile and Wireless Communications Network Layer and Circuit Level Design, Salma Ait Fares and Fumiyuki Adachi (Ed), InTech, Europe, China, 2010, 163–189.Google Scholar
[2]Tyro Electronics corporation, “Distributed antenna systems and MIMO technology”, white paper, TE Connectivity Wireless and Services, 2011.Google Scholar
[3] Abouda, A.A.; Haggman, S.G.: Effect of mutual coupling capacity of MIMO wireless channels in high SNR scenario. Progr. Electromagn. Res., 65 (2006), 27–40.CrossRefGoogle Scholar
[4] Kharche, S. et al. : MIMO antenna for Bluetooth, WI-FI, WIMAX and UWB applications. Progr. Electromagn. Res. C, 52 (2014), 53–62.CrossRefGoogle Scholar
[5] Karimian, R. et al. : Novel F-shaped quad-band printed slot antenna for WLAN and WIMAX MIMO system. IEEE Antenna Propag. Lett., 12 (2013), 405–408.CrossRefGoogle Scholar
[6] Yang, F.; Rahmat-Samii, Y.: Microstrip antennas integrated with electromagnetic band gap structures: a low mutual coupling design for array applications. IEEE Trans. Antenna Propag., 51 (10) (2003), 2936–2946.CrossRefGoogle Scholar
[7] Anitha, R.; Sarin, V.P.; Mohanan, P.; Vasudevan, K.: Enhanced isolation with defeated ground structure in MIMO antenna. Electron. Lett., 50 (4) (2014), 1784–1786.CrossRefGoogle Scholar
[8] Xias, S.; Tang, M.C. et al. : Mutual coupling suppression in microstrip array using defeated ground structure. IET Microw. Antenna Propag., 5 (12) (2011), 1488–1494.Google Scholar
[9] Balanis, C.A.: Antenna Theory: Analysis and Design, 3rd ed., John Wiley & Sons, Inc, USA, 2005.Google Scholar
[10] Khan, M.S.; Shafique, M.F. et al. : A miniaturized dual band MIMO antenna for WLAN applications. IEEE Antenna Wireless Propag. Lett., 14 (2015), 958–961.CrossRefGoogle Scholar
[11] Arun, H.; Sarma, A.K.; Kanagasabai, M. et al. : Deployment of modified serpentine structure for mutual coupling reduction in MIMO antennas. IEEE Antenna Wireless Propag. Lett., 13 (2014), 277–280.CrossRefGoogle Scholar
[12] Kildal, P.-S., Rosengren, K.: Correlation and capacity of MIMO systems and mutual coupling, radiation efficiency and diversity gain of their antennas: simulations and measurements in a reverberation chamber. IEEE Commun. Mag., 42 (12) (2004), 104–112.CrossRefGoogle Scholar
[13] Blanch, S.; Romeu, J.; Corbella, I.: Exact representation of antenna system diversity performance from input parameter description. Electron. Lett. 39 (9) (2003), 705–707.CrossRefGoogle Scholar
[14] Sung ho, C. et al. : Analysis of mutual coupling in MIMO antenna array by TARC calculation. Proc. of Asia-Pacific Microwave Conf., 2006.Google Scholar