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Content Provider | IET Digital Library |
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Author | Boukarkar, Abdelheq Lin, Xian Qi |
Abstract | We propose a self-quadruplexing four-element multiple-input-multiple-output (MIMO) antenna system with frequency agility. Four separately-fed orthogonal U-slots are cut from the same cavity to locate the radiating patches. The frequency tuning is realized by inserting four varactors into the radiating structures. Metalized vias are used for antenna miniaturization and to reduce the coupling between the radiating elements. Also, the antenna exploits the slits realized in its ground plane to further increase the isolation. Truly, the isolation between the elements is enhanced from 8 to 16 dB when they are tuned concurrently. The antenna system has the added merit of tuning each element separately to excite four different operating frequencies exhibiting the self-quadruplexing function. Measurements reveal that the frequency bands can be tuned together or individually from 4.67 to 5.84 GHz without affecting each other. The measured peak gain and efficiency are 3.73 dBi and 65%, respectively. The proposed MIMO antenna is a promising candidate for communication systems as it is printed on one substrate layer, has a miniaturized size, exhibits good diversity performance with a maximum envelope correlation coefficient of 0.11, and the four elements can be reconfigured separately without the additional quadruplexer circuit. |
Starting Page | 973 |
Ending Page | 979 |
Page Count | 7 |
ISSN | 17518725 |
Volume Number | 14 |
e-ISSN | 17518733 |
Issue Number | Issue 9, Jul (2020) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/14/9 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2020.0065 |
Journal | IET Microwaves, Antennas & Propagation |
Publisher Date | 2020-04-27 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Antenna Accessory Antenna Array Antenna Feeds Antenna Miniaturization Antenna Radiation Pattern Diversity Performance Diversity Reception Envelope Correlation Coefficient Four-element MIMO Antenna System Four-element Multiple-input-multiple-output Antenna System Frequency 4.67 GHz to 5.84 GHz Frequency Agility Frequency Tuning Metalized Vias Microwave Antenna Array MIMO Communication Miniaturized Frequency-tunable Self-quadruplexing Multiplexing Equipment Quadruplexer Circuit Radiating Element Radiating Patches Radiating Structure Radio Link And Equipment Self-quadruplexing Function Separately-fed Orthogonal U-Slot Slot Antenna Array Varactors |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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