This paper presents, a novel 4-element collocated traveling wave substrate integrate wave guide (SIW) multiple-input-multiple-output (MIMO) antenna covering millimeter wave (mm-wave) bands (28-32 GHz). The antenna has exhibits a matching bandwidth of more than 4 GHz, and a measured gain of 15 dBi. The MIMO antenna elements are collocated, thus significantly reducing the size of the proposed design. To spatially isolate the beams (obtain lower correlation coefficient) of the MIMO antenna elements, the beams are oriented in different directions. The slots within each SIW array are designed to provide tilted beams ,thus eliminating the need for a beam switching network. Four distinct beams are formed towards±10o and ±30o. The dimensions of the 4-element MIMO SIW design is 68×30.68×0.5 mm3. The proposed antenna has high gain,more compact size, simpler feeding and enhanced MIMO capability compared to other SIW antennas proposed in the literature.
|Original language||English (US)|
|Journal||IET Microwave Antennas and Propagation|
|State||Published - Oct 2020|
Bibliographical noteKAUST Repository Item: Exported on 2021-02-01
Acknowledged KAUST grant number(s): ST-2016-KKI-2899
Acknowledgements: The authors would like to thank Kirill Klionovski (KAUST) and Mohammad Reza Rahimi (Polytechnique Montreal) for their help in testing the antenna. This work was partially funded by KFUPM DSR project no. FT 161006 and KAUST project on ST-2016-KKI-2899.