Use this URL to cite or link to this record in EThOS:
Title: Smart base station antennas for MIMO and 5G mobile communications
Author: Alieldin, Ahmed
ISNI:       0000 0004 7970 5192
Awarding Body: University of Liverpool
Current Institution: University of Liverpool
Date of Award: 2019
Availability of Full Text:
Access from EThOS:
Access from Institution:
Because of the evolution of cellular communication technologies, base station antennas have developed a lot. This thesis focuses on the developing of base station antennas and addresses some of their challenges. The challenges that face base station antenna designers for 3G, 4G and 5G mobile networks can be summarized as having a reconfigurable smart antenna that can operate in different roles, obtaining a MIMO antenna system with good diversity in multiband, and constructing less conspicuous base station platforms. Of course, small size, low profile and less-cost antennas are preferable. Based on the above discussions, this thesis offers six major contributions to address the stated problems and challenges. They can be summarized as follows: • A novel design of reconfigurable base station antenna which can operate into two different roles across the band from 1.7 to 2.7 GHz. • A new mathematical modelling for optimum partitioning of a phased-MIMO antenna array. • A novel dual-band MIMO antenna system using overlapped subarrays based on the phased-MIMO technique to cover the bands from 0.7 to 0.96 GHz and from 1.7 to 2.7 GHz simultaneously. To the best of the author's knowledge, the phased-MIMO technique has been practically applied for the first time in this PhD work. • A novel MIMO triple-broadband indoor base station antenna to serve 2G, 3G, 4G and 5G networks. The antenna performance supports MIMO system utilizing polarization diversity due to its co-located dual-polarized dipoles. • A new MIMO antenna array for 5G mobile networks which can operate in broadcast or traffic communication topologies whenever required. The MIMO array uses a novel Pseudo Inverse Synthesis to produce concurrent dynamic multiple beams outperforming other multi-beam antenna array methods. • A novel transparent antenna array for 5G pico-cell base stations is proposed. This transparency allows the antenna to be feasibly integrated with a street lamp to achieve visual camouflage.
Supervisor: Huang, Yi Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral