volume | PIER Journals

Abstract

In this study, a novel Switched Beam Antenna (SBA) system is proposed and experimentally validated for C-Band applications. The system is made up of a 4 × 4 Butler matrix, whose outputs are connected to four square-looped radiator antenna elements. The originality of the proposed work depends on the construction of a miniaturized beamforming network with minimal complexity, low loss, and low expense. Moreover, designing a system with a broad frequency range enables its use in a variety of applications. Miniaturization is achieved by eliminating the crossover and integrating the 45˚ shifter into the 90˚ hybrid coupler, as well as tilting the antenna array (i.e., making the Butler matrix output and the feed line of the antenna element orthogonal). The simulated results of the phase difference between the suggested Butler matrix outputs closely match the -45˚-135˚ theoretical calculations. The SBA measured results show a wide bandwidth and low insertion loss of 63.64% (4.21-8.14 GHz) and -4.89 dB, respectively. Four orthogonal beams are produced by the proposed structure's input ports 1-4 when they are excited. These beams are aligned at angles of -10˚, 60˚, -60˚, and 10˚ at 5.7 GHz.

1. Anastasov, J., S. Panic, M. Stefanovic, and P. Spalevic, Fading and Interference Mitigation in Wireless Communications, CRC Press, Inc., 2017.

2. Mahender, K., T. A. Kumar, and K. S. Ramesh, "Analysis of multipath channel fading techniques in wireless communication systems," AIP Conference Proceedings 1952, 020050, 2018.
doi:10.1063/1.5032012 Google Scholar

3. Rojsel, P., "RF MEMS-based wireless architectures and front-ends," Handbook of MEMS for Wireless and Mobile Applications, 207-224, 2013.
doi:10.1533/9780857098610.1.207 Google Scholar

4. Bembarka, A., L. Setti, A. Tribak, H. Nachouane, and H. Tizyi, "Frequency tunable filtenna using defected ground structure filter in the sub-6 GHz for cognitive radio applications," Progress In Electromagnetics Research C, Vol. 118, 213-229, 2022.
doi:10.2528/PIERC22011403 Google Scholar

5. Chaipanya, P., S. Kaewuam, J. Hirunruang, W. Suntara, N. Santalunai, and S. Santalunai, "Dual band switched beam textile antenna for 5G wireless communications," CMC --- Comput. Mat. Contin., Vol. 73, 181-198, 2022. Google Scholar

6. Zulfi, J. S. and A. Munir, "Design and characterization of 4 x 4 Butler matrix for switched-beam antenna array," 2021 IEEE Asia Pacific Conference on Wireless and Mobile (APWiMob), 238-241, 2021.
doi:10.1109/APWiMob51111.2021.9435206 Google Scholar

7. Lialios, D. I., C. L. Zekios, and S. V. Georgakopoulos, "A compact mmWave SIW blass matrix," IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, APS/URSI 2021 --- Proceedings, 961-962, 2021. Google Scholar

8. Fakoukakis, F. and G. Kyriacou, "Novel Nolen matrix based beamforming networks for series-fed low SLL multibeam antennas," Progress In Electromagnetics Research B, Vol. 51, 33-64, 2013.
doi:10.2528/PIERB13011605 Google Scholar

9. Vallappil, A. K., M. K. A. Rahim, B. A. Khawaja, N. A. Murad, and M. G. Mustapha, "Butler matrix based beamforming networks for phased array antenna systems: A comprehensive review and future directions for 5G applications," IEEE Access, Vol. 9, 3970-3987, 2021.
doi:10.1109/ACCESS.2020.3047696 Google Scholar

10. Zhu, J., B. Peng, and S. Li, "Cavity-backed high-gain switch beam antenna array for 6-GHz applications," IET Microw. Antennas Propag., Vol. 11, No. 12, 1776-1781, 2017.
doi:10.1049/iet-map.2016.1129 Google Scholar

11. Rao, P. H., J. S. Sajin, and K. Kudesia, "Miniaturisation of switched beam array antenna using phase delay properties of CSRR-loaded transmission line," IET Microw. Antennas Propag., Vol. 12, No. 12, 1960-1966, 2018.
doi:10.1049/iet-map.2017.0978 Google Scholar

12. Klionovski, K., A. Shamim, and M. S. Sharawi, "5G antenna array with wide-angle beam steering and dual linear polarizations," 2017 IEEE International Symposium on Antennas and Propagation and USNC/URSI National Radio Science Meeting, 1469-1470, 2017.
doi:10.1109/APUSNCURSINRSM.2017.8072777 Google Scholar

13. Zaidel, D. N. A., S. K. A. Rahim, and N. Seman, "4 x 4 ultra wideband Butler matrix for switched beam array," Wireless Pers. Commun., Vol. 82, No. 4, 2471-2480, 2015.
doi:10.1007/s11277-015-2359-5 Google Scholar

14. Tian, G., J. P. Yang, and W. Wu, "A novel compact butler matrix without phase shifter," IEEE Microw. Wirel. Compon. Lett., Vol. 24, No. 5, 306-308, 2014.
doi:10.1109/LMWC.2014.2306898 Google Scholar

15. Jeong, Y. S. and T. W. Kim, "Design and analysis of swapped port coupler and its application in a miniaturized Butler matrix," IEEE Trans. Microw. Theory Tech., Vol. 58, No. 4, 764-770, 2010.
doi:10.1109/TMTT.2010.2041571 Google Scholar

16. Bhowmik, P. and T. Moyra, "Modelling and validation of a compact planar Butler matrix by removing crossover," Wirel. Pers. Commun., 5121-5132, 2017.
doi:10.1007/s11277-017-4158-7 Google Scholar

17. Adamidis, G., I. Vardiambasis, M. Ioannidou, and T. Kapetanakis, "Design and implementation of single-layer 4 x 4 and 8 x 8 Butler matrices for multibeam antenna arrays," International Journal of Antennas and Propagation, Vol. 2019, 1-12, 2019.
doi:10.1155/2019/1645281 Google Scholar

18. Zheng, L. M., Z. T. Lu, B. W. Xu, and S. Y. Zheng, "Flexible millimeter-wave butler matrix based on the low-loss substrate integrated suspended line patch hybrid coupler with arbitrary phase difference and coupling coefficient," Int. J. RF Microw. Comput-Aided Eng., Vol. 31, No. 6, 2021.
doi:10.1002/mmce.22652 Google Scholar

19. Han, K., W. Li, and Y. Liu, "Flexible phase difference of 4 x 4 Butler matrix without phase-shifters and crossovers," Int. J. Antennas Propag., 1-7, 2019.
doi:10.1155/2019/4703161 Google Scholar

20. Messaoudene, I., H. Youssouf, M. Bilal, and M. Belazzoug, "Performance improvement of multilayer butler matrix for UWB beamforming antenna," Seminar on Detection Systems Architectures and Technologies (DAT), 1-4, 2017. Google Scholar

21. Jia, L., L. Zhang, and C. Zhang, "A dual-band and wide-band branch-line coupler with a large frequency ratio," Microw. Opt. Technol. Lett., Vol. 63, No. 1, 146-151, 2021.
doi:10.1002/mop.32592 Google Scholar

22. Bembarka, A., A. Tribak, H. Nachouane, L. Setti, and A. Mediavilla, "Wideband and electronically tunable microwave phase shifter using varactors with relative phase shifts up to 360^◦," Int. J. Microw. Opt. Technol., Vol. 16, No. 13, 252-260, 2021. Google Scholar

23. Huong, H. T., "Beamforming phased array antenna toward indoor positioning applications," Advanced Radio Frequency Antennas for Modern Communication and Medical Systems, 2020. Google Scholar

24. Reddy, M. H., D. Siddle, and D. Sheela, "Design and implementation of a beam-steering antenna array using Butler matrix feed network for X-band applications," AEU Int. J. Electron Commun., Vol. 147, 154147, 2022.
doi:10.1016/j.aeue.2022.154147 Google Scholar

25. Jung, B.-R., Y.-B. Park, S.-Y. Kang, J.-H. Jung, J.-G. Ju, and Y. Yun, "Highly miniaturized on- hip 90^◦ hybrid coupler employing transmission line with periodic structure," PIERS Proceedings, 1642-1644, Xi'an, China, March 22-26, 2010. Google Scholar

26. Substrate Rogers RO4000C series laminates data sheet, Rogers Corp., "http://www.rogerscorp.com," January 6, 2023.

27. Babale, S. A., S. K. Abdul Rahim, O. A. Barro, M. Himdi, and M. Khalily, "Single layered 4 x 4 butler matrix without phase-shifters and crossovers," IEEE Access, Vol. 6, 77289-77298, 2018.
doi:10.1109/ACCESS.2018.2881605 Google Scholar

28. Wen, J. M., C. K. Wang, W. Hong, Y. M. Pan, and S. Y. Zheng, "A wideband switched-beam antenna array fed by compact single-layer butler matrix," IEEE Trans. Antennas Propag., Vol. 69, No. 8, 5130-5135, 2021.
doi:10.1109/TAP.2021.3060040 Google Scholar

29. Nedil, M., T. A. Denidni, and L. Talbi, "Novel butler matrix using CPW multilayer technology," IEEE Trans. Microw. Theory Tech., Vol. 54, No. 1, 499-507, 2006.
doi:10.1109/TMTT.2005.860490 Google Scholar

30. Bantavis, P. I., C. I. Kolitsidas, T. Empliouk, M. Le Roy, B. L. G. Jonsson, and G. A. Kyriacou, "A cost-effective wideband switched beam antenna system for a small cell base station," IEEE Trans. Antennas Propag., Vol. 66, No. 12, 6851-6861, 2018.
doi:10.1109/TAP.2018.2874494 Google Scholar

31. Mousavirazi, Z., V. Rafiei, and T. A. Denidni, "Beam-switching antenna array with dual-circular-polarized operation for WiMAX applications," AEU Int. J. Electron Commun., Vol. 137, 153796, 2021.
doi:10.1016/j.aeue.2021.153796 Google Scholar

Dr. Aicha Bembarka

Dr. Larbi Setti

Professor Abdelwahed Tribak

Dr. Hafid Tizyi

Dr. Mohssine El Ouahabi