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| Content Provider | IET Digital Library |
|---|---|
| Author | Tarifi, Monjed A. Al Sharawi, Mohammad S. Shamim, Atif |
| Abstract | A 72-port (288 antennas) triangular-shaped massive multiple-input–multiple-output (mMIMO) antenna system is presented for fifth generation (5G) base stations. Each side of the antenna system consists of three layers with a total size of 44.4 × 29.6 × 0.1524 cm3, and contains 24 ports. Each port (subarray) consists of 2 × 2 patches on the top layer, their feeding network with pre-calculated phases is on the bottom layer and the ground plane is in the middle one. Each port is fed in a way to tilt its beam direction with respect to others to achieve uncorrelated individual patterns. The antenna system is the first to support two operating modes: simultaneous individual port operation (i.e. 72-port MIMO) and mMIMO array operation (i.e. with beam switching). The measured bandwidth is 100 MHz that covers the band from 3.45 to 3.55 GHz. The measured gain of a single port equals to 9.41 dBi. The envelop correlation coefficient does not exceed 0.1198. A beamsteering method to steer the beam of each 24-port side to different locations in the space is presented and applied based on the non-uniform port patterns (unlike most conventional methods). Thirteen switched beams are obtained with centre angle coverage up to 34° in elevation with maximum gain of 19.5 dBi. |
| Starting Page | 1709 |
| Ending Page | 1718 |
| Page Count | 10 |
| ISSN | 17518725 |
| Volume Number | 12 |
| e-ISSN | 17518733 |
| Issue Number | Issue 10, Aug (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/12/10 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.0005 |
| Journal | IET Microwaves, Antennas & Propagation |
| Publisher Date | 2018-04-16 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | 5G Base Stations 5G Mobile Communication 72-port Triangular-shaped Massive Multiple-input-multiple-output Antenna System Antenna Accessory Antenna Array Antenna Feeds Bandwidth 100 MHz Beam Direction Beam Steering Beam Switching Directive Antenna Directive Ports Envelop Correlation Coefficient Feeding Network Fifth Generation Base Stations Frequency 3.45 GHz to 3.55 GHz Ground Plane Identical Array Element Massive MIMO Antenna System Microstrip Antenna Array MIMO Communication MMIMO Array Operation Mobile Antenna Mobile Radio System Nonuniform Port Pattern Simultaneous Individual Port Operation Subarray Switched Beamteering Capabilities Uncorrelated Individual Pattern |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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