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| Content Provider | IET Digital Library |
|---|---|
| Author | Jehangir, Syed S. Hussain, Rifaqat Hussein, Mousa I. Sharawi, Mohammad S. |
| Abstract | A compact single layer frequency reconfigurable Yagi-like multiple-input multiple-output (MIMO) antenna system is presented based on a half-ring closed loop slot excitation. The traditional omnidirectional pattern of a slot antenna is made directional by using a single slot-based complementary wideband reflector (CWBR) element. The proposed CWBR is compact in size, simple in construction, and is based on a single-layer geometry unlike complex multi-layer reflectors used in the literature. It improves the front-to-back ratio between 5 and 17 dB in the entire frequency range covering 2.5–4.5 GHz. The proposed reconfigurable MIMO antenna system covers the LTE and WiMAX bands with a minimum measured bandwidth of 200 MHz per covered bands. The frequency reconfigurability is achieved by reactively loading the slot loop with varactor diodes. The overall size of the proposed antenna system is 40 × 100 × 0.76 mm 3 , making it suitable for tablet handheld devices and access points. It has a maximum measured peak gain of 5 dBi and total measured radiation efficiency of 78%. The proposed MIMO antenna system has port isolation of > 10 dB within the entire band of operation. The radiation patterns are isolated in space from each other and ensure very low envelope correlation coefficient. |
| Starting Page | 586 |
| Ending Page | 592 |
| Page Count | 7 |
| ISSN | 17518725 |
| Volume Number | 14 |
| e-ISSN | 17518733 |
| Issue Number | Issue 7, Jun (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/14/7 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2019.0630 |
| Journal | IET Microwaves, Antennas & Propagation |
| Publisher Date | 2020-02-18 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Access Points Antenna Array Antenna Radiation Pattern Bandwidth 200.0 MHz Broadband Antenna Capacitor Compact Single Layer Frequency Reconfigurable Yagi-like MIMO Antenna System Complex Multilayer Reflectors CWBR Element Efficiency 78 Percent Frequency 2.5 GHz to 4.5 GHz Gain 5.0 DB to 17.0 DB Half-ring Closed Loop Slot Excitation Junction And Barrier Diode Long Term Evolution Loop Antenna LTE Band Microwave Antenna Array MIMO Communication Multiple-input Multiple-output Antenna System Omnidirectional Antenna Omnidirectional Pattern Reflector Antenna Single Slot-based Complementary Wideband Reflector Element Single-layer Geometry Slot Antenna Array Slot Loop Antenna Tablet Handheld Device UHF Antenna Varactor Diode Varactors WiMax WiMAX Band Yagi Antenna Array |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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