{"title":"Reducing the Need for Multi-Input Multi-Output in Multi-Beam Base Transceiver Station Antennas Using Orthogonally-Polarized Feeds with an Arbitrary Number of Ports","authors":"Mohamed Sanad, Noha Hassan","volume":176,"journal":"International Journal of Electronics and Communication Engineering","pagesStart":335,"pagesEnd":340,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/10012192","abstract":"
A multi-beam BTS (Base Transceiver Station) antenna has been developed using dual parabolic cylindrical reflectors. The \u00b145\u00b0 polarization feeds are used in spatial diversity MIMO (Multi-Input Multi-Output). They can be replaced by single-port orthogonally polarized feeds. Then, with two sets of beams generated above each other, the \u00b1 45\u00b0 polarization ports of any conventional transceiver can be connected to two of these beam sets. Thus, with two-port transceivers, the system will be equivalent to 4x4 MIMO, instead of 2x2. Radio Frequency (RF) power combiners\/splitters can also be used to combine the multiple beams into a single beam or any arbitrary number of beams\/ports. The gain of the combined-beam will be more than 20-24 dBi instead of 17-18 dBi of conventional wide-beam antennas. Furthermore, the gain of the combined beam will be high over the whole beam angle. Moreover, the users will always be close to the peak gain value of the combined beam regardless of their location within the combined beam angle. The frequency bands of all the combined beams are adjusted such that they all have the same frequency band. Different configurations of RF power splitter\/combiners can be used to provide any arbitrary number of beams\/ports according to the requirements of any existing base station configuration.<\/p>","references":"[1]\tA.K.M Fazlul Haque, Mir Mohammad Abu Kyum, Md. Baitul Al Sadi, Mrinal Kar and Md. Fokhray Hossain, \u201cPerformance Analysis of UMTS Cellular Network using Sectorization Based on Capacity and Coverage\u201d, (IJACSA) International Journal of Advanced Computer Science and Applications, Vol. 2, No. 6, 2011, \r\n[2]\tL. Shen, H. Wang, E. Willis, W. Lotz, H. Jamali, \u201cCompact Dual-Band Interleaved Multi-Beam Base Station Antenna\u201d,2020 IEEE Symposium on Antennas and Propagation \r\n[3]\tD. Guan, C. Ding, Y. J. Guo. \u201cA compact multi-beam antenna without beam forming network\u201d, 2016 International Symposium on Antennas and Propagation (ISAP)\r\n[4]\tW. Wu, Z. Zhang, Y. Zhao, Q. Liu, C. Wang, Y. Zuo, \u201cDesign of Multi-Beam Antenna Based on Rotman Lens\u201d, 2019 International Applied Computational Electromagnetics Society Symposium - China (ACES)\r\n[5]\tN. Herscovici, \u201cA Highly Efficient, Multi-beam, Wide Scan Angle Antenna\u201d, 2020 IEEE International Symposium on Antennas and Propagation\r\n[6]\tM.Sanad and Noha Hassan, \u201cA Multible Beam LTE Base Station Antenna with Simultaneous Vertical and Horizontal Sectorization,\u201d International Journal of Electronics and Communication Engineering, Vol:12, No:1, PP.82-88, 2018.\r\n[7]\tM. Sanad and N. Hassan, \u201cA 5G Sub-6GHz Switched-beam Smart Base Station Antenna with an Arbitrary Remote Electric Tilt for Each Beam\u201d, Microwave Journal, Online Spotlight article, Nov 2020, https:\/\/www.microwavejournal.com\/authors\/4817-mohamed-sanad-and-noha-hassan-cairo-university-giza-egypt\r\n[8]\tM.Sanad and Noha Hassan, \u201cOrthogonally Polarized MIMO LTE\/5G Terminal Antennas for Handsets and IoT Applications,\u201d 2019 IEEE Radio and Wireless Symposium (RWS2019), Orlando, FL, USA, January 2019.\r\n[9]\tM.Sanad and L. Shafai, \u201cGeneration of Elliptical Beams of Arbitrary Beam Ellipticity and Low Cross-Polarization Using Offset Dual Parabolic Cylindrical Reflectors,\u201d Canadian Journal of Electrical Engineering, Vol.13, No.3, pp.99-105, 1988.\r\n[10]\tM.Sanad and Noha Hassan, \u201cA Single Port Orthogonally Polarized Antenna for Handsets, IoT Terminals and Vehicles,\u201d 2020 14th European Conference on Antennas and Propagation (EuCAP), Copenhagen, Denmark, March2020\r\n[11]\tSalam Akoum, Joydeep Acharya and Amitav Mukherjee \u201cMethod of operating vertical sectorization in FD-MIMO systems,\u201d Patent application WO2015152931A1, 2015, Oct. 8, (Online). Available: https:\/\/www.google.com\/ patents\/WO2015152931A1?cl=en\r\n[12]\tA. Safarian, Le. Zhou, P. Heydari, \u201cCMOS Distributed Active Power Combiners and Splitters for Multi-Antenna UWB Beamforming Transceivers\u201d IEEE Journal of Solid-State Circuits, 2007, Volume: 42, Issue: 7 \r\n[13]\tG. Kim, J. Kim, S Chae, J. Yu, \u201cA Reconfigurable Feeder for Combinational Switched-Beam Network\u201d, 2018 IEEE International Symposium on Antennas and Propagation \r\n[14]\tK. J. Flattery, S. Amin. Y. Mahamat, A. Eroglu. D. Ronnow, \u201cHigh power combiner\/divider design for dual band RF power amplifiers\u201d, 2015 International Conference on Electromagnetics in Advanced Applications (ICEAA)\r\n[15]\tF. Martiacuten, L. Zhu, J. Hong, F. Medina, \u201cBalanced Power Dividers\/Combiners\u201d, a book chapter of \u201cBalanced Microwave Filters\u2019, Wiley-IEEE Press, 2018","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 176, 2021"}