Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 22, Issue 7, Pages 1721-1725Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2023.3262159
Keywords
8-port multiple-input-multiple-output (MIMO) antenna; fraction-mode SIW antenna; MIMO antenna
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This paper presents a sector-shaped compact p /8 partial substrate integrated waveguide cavity antenna from the TM220 diagonal mode of the SIW cavity. A 61% size miniaturization is achieved compared to the SIW rectangular cavity in its complete mode configuration. The compact cavity radiator is used as an element of a compact 8-port multiple-input-multiple-output (MIMO) antenna.
A sector-shaped compact p /8 partial substrate integrated waveguide cavity antenna from the TM220 diagonal mode of the SIW cavity is presented. A 61% size miniaturization is achieved compared to the SIW rectangular cavity in its complete mode configuration. The compact cavity radiator is used as an element of a compact 8-port multiple-input-multiple-output (MIMO) antenna. The 8-port MIMO antenna occupies the entire full cavity with slots loaded on the top and bottom layers. The fabricated prototype has a -10 dB impedance bandwidth (BW) from 6.006 to 6.143 GHz. The mutual coupling within the BW is less than -21 dB. The presented MIMO antenna has an envelope correlation coefficient (ECC) less than 0.0027, and a percentage diversity gain reduction below 1.73%, which makes it a suitable candidate for use in MIMO-based wireless communications.
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