volume | PIER Journals

Abstract

A six-element circular antenna array with Yagi-Uda corner reflector elements is proposed in order to achieve 360° beam-steering capability, high gain and cost-effective design objectives. The array element is mainly composed by a Yagi-Uda antenna, a corner reflector and a Wilkinson balun. For steering the main beam, instead of classical RF switching techniques, a virtual switching technique is offered. For this aim, each antenna element is connected to an affordable RF transceiver managed by a microcontroller. A USB hub is also used so that a computer operates all microcontrollers as peripheral devices. In this way, the switching operation can be performed in the software level. Furthermore, if every transceiver in the separate chain is set to a different frequency channel, a simultaneous communication is also possible with the help of the multithreading facility of the computer. In order to show the antenna array performance, the main antenna characteristics and test results are given. As a proof of concept, a wireless image collector scenario is also realized for a camera trap application. The results show that the circular antenna array design and switching technique work successfully.

1. Labadie, N. R., S. K. Sharma, and G. M. Rebeiz, "A novel approach to beam steering using arrays composed of multiple unique radiating modes," IEEE Trans. Antennas Propag., Vol. 63, No. 7, 2932-2945, Jul. 2015.
doi:10.1109/TAP.2015.2423695

2. Scott, H. and V. F. Fusco, "360˚ electronically controlled beam scan array," IEEE Trans. Antennas Propag., Vol. 52, No. 1, 333-335, Jan. 2004.
doi:10.1109/TAP.2003.822443

3. Sibille, A., C. Roblin, and G. Poncelet, "Circular switched monopole array for beam steering wireless communication," Electron. Lett., Vol. 33, No. 7, 551-552, Mar. 1997.
doi:10.1049/el:19970402

4. Debogović, T. and J. Perruisseau-Carrier, "Array-fed partially reflective surface antenna with independent scanning and beamwidth dynamic control," IEEE Trans. Antennas Propag., Vol. 62, No. 1, 446-449, Jan. 2014.
doi:10.1109/TAP.2013.2287018

5. Ji, L., G. Fu, and S.-X. Gong, "Array-fed beam-scanning partially reflective surface (PRS) antenna," Progress In Electromagnetics Research Letters, Vol. 58, 73-79, 2016.
doi:10.2528/PIERL15101802

6. Lai, M. I., T. Y. Wu, J. C. Hsieh, C. H. Wang, and S. K. Jeng, "Compact switched-beam antenna employing a four-element slot antenna array for digital home applications," IEEE Trans. Antennas Propag., Vol. 56, No. 9, 2929-2936, Sep. 2008.
doi:10.1109/TAP.2008.928775

7. Wounchoum, P., D. Worasawate, C. Phongcharoenpanich, and M. Krairiksh, "A switched-beam antenna using circumferential-slots on a concentric sectoral cylindrical cavity excited by coupling slots," Progress In Electromagnetics Research, Vol. 120, 127-141, 2011.
doi:10.2528/PIER11072207

8. Rodrigo, D., L. Jofre, and B. A. Cetiner, "Circular beam-steering reconfigurable antenna with liquid metal parasitics," IEEE Trans. Antennas Propag., Vol. 60, No. 4, 1796-1802, Apr. 2012.
doi:10.1109/TAP.2012.2186235

9. Alam, M. S., Y. Wang, N. Nguyen-Trong, and A. Abbosh, "Compact circular reconfigurable antenna for high directivity and 360° beam scanning," IEEE Antennas Wireless Propag. Lett., Vol. 17, No. 8, 1492-1496, Aug. 2018.
doi:10.1109/LAWP.2018.2850857

10. Ge, L., K. M. Luk, and S. Chen, "360° beam-steering reconfigurable wideband substrate integrated waveguide horn antenna," IEEE Trans. Antennas Propag., Vol. 64, No. 12, 5005-5011, 2016.
doi:10.1109/TAP.2016.2617820

11. Yang, Y. and X. Zhu, "A wideband reconfigurable antenna with 360° beam steering for 802.11ac WLAN applications," IEEE Trans. Antennas Propag., Vol. 66, No. 2, 600-608, Feb. 2018.
doi:10.1109/TAP.2017.2784438

12. Kays, R., B. Kranstauber, P. Jansen, C. Carbone, M. Rowcliffe, T. Fountain, and S. Tilak, "Camera traps as sensor networks for monitoring animal communities," Proc. 34th IEEE Conf. Local Computer Network, 811-818, Zurich, Switzerland, Oct. 2009.

13. Camacho, L., R. Baquerizo, J. Palomino, and M. Zarzosa, "Deployment of a set of camera trap networks for wildlife inventory in western amazon rainforest," IEEE Sensors J., Vol. 17, No. 23, 8000-8007, Dec. 2017.
doi:10.1109/JSEN.2017.2760254

14. Bagree, R., V. R. Jain, A. Kumar, and P. Ranjan, "TigerCENCE: Wireless image sensor network to monitor tiger movement," Real-World Wireless Sensor Networks, 13-24, Springer, Berlin, Heidelberg, 2010.

15. Pozar, D. M., Microwave Engineering, 3rd Ed., Wiley, Hoboken, NJ, USA, 2004.

16. Antoniades, M. A. and G. V. Eleftheriades, "A broadband Wilkinson balun using microstrip metamaterial lines," IEEE Antennas Wireless Propag. Lett., Vol. 4, 209-212, 2005.
doi:10.1109/LAWP.2005.851005

17., COMSOL Multiphysics RF Module v. 5.4. COMSOL AB, Stockholm, Sweden, [online], available: https://www.comsol.com/rf-module, accessed on: May 16, 2020.

18. Kraus, J. D., "The corner-reflector antenna," Proc. Inst. Radio Eng., Vol. 28, No. 11, 513-519, Nov. 1940.

19. Sterr, U. O., A. D. Olver, and P. J. B. Clarricoats, "Variable beamwidth corner reflector antenna," Electron. Lett., Vol. 34, No. 11, 1050-1051, May 1998.
doi:10.1049/el:19980708

20. Milijić, M., A. D. Nešić, and B. Milovanović, "Design, realization, and measurements of a corner reflector printed antenna array with cosecant squared-shaped beam pattern," IEEE Antennas Wireless Propag. Lett., Vol. 15, 421-424, 2016.
doi:10.1109/LAWP.2015.2449257

21. Nordic Semiconductors "Single chip 2.4 GHz transceiver,", nRF24L01+ datasheet, Sep. 2008.

22. Emin, B. and S. Basbug, "A low cost measurement system for antenna radiation patterns with logarithmic RF detector," Proc. International Turkic World Congress on Science and Engineering, 800-808, Nigde, Turkey, Jun. 17-18, 2019.

23., Line-of-sight and path profiler software, [online], available: http://heywhatsthat.com/, accessed on: May 16, 2020.

Mr. Suad Basbug