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Closely spaced MIMO antenna based on substrate‐integrated waveguide technology
Author(s) -
Sung Youngje
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31249
Subject(s) - rectangle , isosceles triangle , mimo , antenna (radio) , envelope (radar) , waveguide , electronic engineering , engineering , physics , optics , telecommunications , mathematics , geometry , beamforming , radar
In this letter, a compact array system for multiple‐input‐multiple‐output (MIMO) applications is designed, based on substrate integrated waveguide (SIW) technology. In order to verify the potential of the proposed antenna as a MIMO application, 2 types of 4‐element SIW antenna are placed in a compact space. Four isosceles triangle (type 1) and rectangle (type 2) SIW antennas, consisting of metallic vias at 1 side and slit at the other side, are used as radiating elements. The side‐to‐side distance of the elements is only 0.006 λ0. The peak gain of these patterns is −3 dBi. The envelope correlation coefficient is calculated from the measured 3D patterns and shows good MIMO performance. The proposed antenna achieves both a significant reduction of size and mutual coupling by metallic vias.