Home A Frequency Reconfigurable MIMO Antenna System for Cognitive Radio Applications
Article
Licensed
Unlicensed Requires Authentication

A Frequency Reconfigurable MIMO Antenna System for Cognitive Radio Applications

  • A. Raza , Muhammad U. Khan and Farooq A. Tahir EMAIL logo
Published/Copyright: February 5, 2017
Become an author with De Gruyter Brill
Author Information
Frequenz
From the journal Frequenz Volume 71 Issue 11-12

Abstract

In this paper, a two element frequency reconfigurable multiple-input-multiple-output (MIMO) antenna system is presented. The proposed antenna consists of miniaturized patch antenna elements, loaded with varactor diodes to achieve frequency reconfigurability. The antenna has bandwidth of 30 MHz and provides a smooth frequency sweep from 2.12 GHz to 2.4 GHz by varying the reverse bias voltage of varactor diode. The antenna is designed on an FR4 substrate and occupies a space of 50×100 × 0.8 mm3. The antenna is analyzed for its far-field characteristics as well as for MIMO performance parameters. Designed antenna showed good performance and is suitable for cognitive radios (CR) applications.

Keywords: cognitive radios; reconfigurable antennas; total active reflection coefficient (TARC); envelop correlation coefficient (ECC)

Funding statement: This work was supported by Higher Education Commission (HEC) of Pakistan under Project SRG No. 958.

References

[1] A. J. Paulraj, D. A. Gore, R. U. Nabar, and H. Blcskei, “An overview of MIMO communications-a key to gigabit wireless,” Proc. IEEE, vol. 92, pp. 198–218, 2004.10.1109/JPROC.2003.821915Search in Google Scholar

[2] V. Valenta, R. Marlek, G. Baudoin, M. Villegas, M. Suarez, and F. Robert, “Survey on spectrum utilization in Europe: Measurements, analyses and observations,” Cognitive Radio Oriented Wireless Networks & Communications (CROWNCOM), 2010 Proc. Fifth Int. Conf. IEEE, vol. 92, pp. 1–5.10.4108/ICST.CROWNCOM2010.9220Search in Google Scholar

[3] J. Mitola, “Cognitive radio architecture evolution,” Proc. IEEE, vol. 97, pp. 626–641, 2009.10.1109/JPROC.2009.2013012Search in Google Scholar

[4] Y. Jay Guo, and P.-Y. Qin, “Advances in reconfigurable antennas for wireless communications,” IEEE Antennas Propag. Mag., vol. 45, pp. 148–154, 2003.10.1109/MAP.2003.1282191Search in Google Scholar

[5] G. Augustin, B. P. Chacko, and T. A. Denidni, “Electronically reconfigurable uni-planar antenna for cognitive radio applications,” Microwaves Antennas Propag. IET, vol. 8, pp. 367–376, 2014.10.1049/iet-map.2013.0287Search in Google Scholar

[6] A. Khidre, F. Yang, and A. Z. Elsherbeni, “A patch antenna with a varactor-loaded slot for reconfigurable dual-band operation,” IEEE Trans. Antennas Propag., vol. 63, pp. 755–760, 2015.10.1109/TAP.2014.2376524Search in Google Scholar

[7] A. Mansoul, F. Ghanem, M. R. Hamid, and M. Trabelsi, “A selective frequency-reconfigurable antenna for cognitive radio applications,” IEEE Antennas Wirel. Propag. Lett., vol. 13, pp. 515–518, 2014.10.1109/LAWP.2014.2311114Search in Google Scholar

[8] T. Wu, H. Bai, P. Li, and X.-W. Shi, “A simple planar monopole UWB slot antenna with dual independently and reconfigurable band-notched characteristics,” Int. J. RF Microwave Comput. Aided Eng. Wiley Online Library, vol. 24, pp. 706–712, 2014.10.1002/mmce.20815Search in Google Scholar

[9] M. S. Nishamol, V. P. Sarin, D. Tony, C. K. Anandan, P. Mohanan, and K. Vasudevan, “Varactor controlled frequency and polarization reconfigurable microstrip antenna,” Int. J. RF Microwave Comput. Aided Eng. Wiley Online Library, vol. 21, pp. 680–686, 2011.10.1002/mmce.20564Search in Google Scholar

[10] Z.-J. Jin, J.-H. Lim, and T.-Y. Yun, “Frequency reconfigurable multiple-input multiple output antenna with high isolation,” IET Microwaves Antennas Propag, vol. 6, pp. 1095–1101, 2012.10.1049/iet-map.2011.0325Search in Google Scholar

[11] R. Hussain, and M. S. Sharawi, “Integrated reconfigurable multiple-input–multiple-output antenna system with an ultrawideband sensing antenna for cognitive radio platforms,” IET Microwaves Antennas Propag., vol. 9, pp. 940–947, 2015.10.1049/iet-map.2014.0605Search in Google Scholar

[12] R. Hussain, and M. S. Sharawi, “Planar meandered-F-shaped 4-element reconfigurable multiple-input–multiple-output antenna system with isolation enhancement for cognitive radio platforms,” IET Microwaves Antennas Propag, vol. 10, pp. 45–52, 2016.10.1049/iet-map.2015.0139Search in Google Scholar

[13] M. S. Sharawi, “Printed multi-band MIMO antenna systems and their performance metrics [Wireless Corner],” IEEE Antennas Propag. Mag., vol. 6, pp. 218–232, 2013.10.1109/MAP.2013.6735522Search in Google Scholar

Received: 2016-6-19
Published Online: 2017-2-5
Published in Print: 2017-10-26

© 2017 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  3. Tunable Balanced Bandpass Filter with High Common-mode Suppression Based on SLSRs
  4. Compact Quad-Band Bandpass Filter Using Double-Diplexing Structure
  5. Seven-Port Unequal Power Divider with Broadband and Large Division Ratio Characteristics Based on T-shape Stub
  6. A Wilkinson Power Divider with Harmonics Suppression and Size Reduction Using Meandered Compact Microstrip Resonating Cells
  7. A 210 GHz Power-Combined Frequency Multiplying Source with Output Power of 23.8 mW
  8. Fractal Based Triple Band High Gain Monopole Antenna
  9. Wideband Monopole Fractal Heptagonal Antenna Implementation in X-Band Frequency Range
  10. A Compact SIW-Fed Dielectric Antenna with Equivalently Tapered E-plane Profile
  11. Dual Band Notched EBG Structure based UWB MIMO/Diversity Antenna with Reduced Wide Band Electromagnetic Coupling
  12. A Frequency Reconfigurable MIMO Antenna System for Cognitive Radio Applications
  13. A Practical Millimeter-Wave Holographic Imaging System with Tunable IF Attenuator
  14. A Two-Stage Space-Time Adaptive Processing Method for MIMO Radar Based on Sparse Reconstruction
  15. Simple and Low-Cost Dual-Band Printed Microwave Absorber for 2.4- and 5-GHz-Band Applications
  16. Overview of Sparse Graph for Multiple Access in Future Mobile Networks
  17. The Lightning Electromagnetic Pulse Coupling Effect Inside the Shielding Enclosure With Penetrating Wire
  18. The DLR Spaceborne SAR Calibration Center
  19. Electron Beam Misalignment Study of MIG for 42 GHz, 200 kW Gyrotron
https://doi.org/10.1515/freq-2016-0185
Keywords for this article
cognitive radios; reconfigurable antennas; total active reflection coefficient (TARC); envelop correlation coefficient (ECC)

Articles in the same Issue

  1. Frontmatter
  3. Tunable Balanced Bandpass Filter with High Common-mode Suppression Based on SLSRs
  4. Compact Quad-Band Bandpass Filter Using Double-Diplexing Structure
  5. Seven-Port Unequal Power Divider with Broadband and Large Division Ratio Characteristics Based on T-shape Stub
  6. A Wilkinson Power Divider with Harmonics Suppression and Size Reduction Using Meandered Compact Microstrip Resonating Cells
  7. A 210 GHz Power-Combined Frequency Multiplying Source with Output Power of 23.8 mW
  8. Fractal Based Triple Band High Gain Monopole Antenna
  9. Wideband Monopole Fractal Heptagonal Antenna Implementation in X-Band Frequency Range
  10. A Compact SIW-Fed Dielectric Antenna with Equivalently Tapered E-plane Profile
  11. Dual Band Notched EBG Structure based UWB MIMO/Diversity Antenna with Reduced Wide Band Electromagnetic Coupling
  12. A Frequency Reconfigurable MIMO Antenna System for Cognitive Radio Applications
  13. A Practical Millimeter-Wave Holographic Imaging System with Tunable IF Attenuator
  14. A Two-Stage Space-Time Adaptive Processing Method for MIMO Radar Based on Sparse Reconstruction
  15. Simple and Low-Cost Dual-Band Printed Microwave Absorber for 2.4- and 5-GHz-Band Applications
  16. Overview of Sparse Graph for Multiple Access in Future Mobile Networks
  17. The Lightning Electromagnetic Pulse Coupling Effect Inside the Shielding Enclosure With Penetrating Wire
  18. The DLR Spaceborne SAR Calibration Center
  19. Electron Beam Misalignment Study of MIG for 42 GHz, 200 kW Gyrotron
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2025 De Gruyter Brill
Downloaded on 27.9.2025 from https://www.degruyterbrill.com/document/doi/10.1515/freq-2016-0185/html?lang=en
Scroll to top button