4-Element Concentric Pentagonal Slot-Line-Based Ultra-Wide Tuning Frequency Reconfigurable MIMO Antenna System
KAUST DepartmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
KAUST Grant NumberOSR 2016-KKI-2899
Online Publication Date2018-05-23
Print Publication Date2018-08
Permanent link to this recordhttp://hdl.handle.net/10754/628306
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AbstractIn this paper, a novel, compact, ultra-wideband tuning, concentric pentagonal slot-line-based frequency reconfigurable multipleinput- multiple-output (MIMO) antenna system is presented. It consists of a 4-element antenna design on a commercially available FR-4 substrate with dimensions 60×120×1.56 mm3. All the antenna elements are planar in structure that are etched out from ground (GND) plane. Frequency reconfigurability is achieved using varactor diodes by reactively loading the antennas. Each capacitance value of the varactor diode results in triband operation. Proper capacitive reactance loading enables the antenna to resonate over a wide frequency band. The proposed MIMO antenna system is tuned over an ultra-wide frequency band and a smooth variation of the resonance frequencies is observed from 1.32~1.49 GHz and 1.75~5.2 GHz. Moreover, the unique feature of the proposed antenna system is the effectiveness of reactive loading the slot over all the resonating bands. The proposed antenna system is compact and suitable to be used in wireless handheld devices and mobile terminals for cognitive radio (CR) applications. The envelope correlation coefficient (ECC) did not exceed 0.186 in the entire operating band of the MIMO antenna operation. The maximum measured gain of the MIMO antenna is 4.5 dBi with maximum efficiency of 81%.
CitationHussain R, Sharawi MS, Shamim A (2018) 4-Element Concentric Pentagonal Slot-Line-Based Ultra-Wide Tuning Frequency Reconfigurable MIMO Antenna System. IEEE Transactions on Antennas and Propagation 66: 4282–4287. Available: http://dx.doi.org/10.1109/tap.2018.2839970.
SponsorsThis work was supported in part by the Deanship of Scientific Research through the King Fahd University of Petroleum and Minerals under Project KAUST002 and in part by the King Abdullah University of Science and Technology through the Office of Sponsored Research under Award OSR 2016-KKI-2899.