A Low-Profile Wideband Dual-Resonance Tri-Port MIMO Antenna

A low-profile wideband tri-polarized MIMO antenna is proposed in this paper. Based on characteristic mode analysis of a circular patch, four slots are etched symmetrically on the patch to transform the high-order monopole-like modes into broadside modes with lower resonant frequencies. Four sets of...

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Bibliographic Details
Published in:IEEE transactions on antennas and propagation 2022, Vol.70 (6), p.1-1
Main Authors: Nie, Li Ying, Lau, Buon Kiong, Aliakbari, Hanieh, Xiang, Shang, Wang, Bao, Lin, Xian Qi
Format: Article
Language:English
Subjects:
Antennas
Broadband
Broadband antennas
characteristic mode analysis
circular patch antenna
Communication Systems
Dipole antennas
Electrical Engineering, Electronic Engineering, Information Engineering
Elektroteknik och elektronik
Engineering and Technology
High gain
Kommunikationssystem
MIMO systems
Pins
Resonant frequency
Slot antennas
Teknik
tri-port antenna
Wideband
wideband antenna
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Summary:A low-profile wideband tri-polarized MIMO antenna is proposed in this paper. Based on characteristic mode analysis of a circular patch, four slots are etched symmetrically on the patch to transform the high-order monopole-like modes into broadside modes with lower resonant frequencies. Four sets of shorting pins are also applied to simultaneously adjust the resonant frequencies of the monopole-like modes and broadside fundamental modes of the patch. The effects of the slots and the shorting pins on these modes are analyzed in detail. Three dual-resonance ports with high isolation are achieved by exciting three pairs of orthogonal modes of the patch. The proposed antenna is wideband with respect to its profile (bandwidth/height = 216), as facilitated by the dual-resonance property of each port. Experimental results show that the proposed antenna features high port isolation (> 35 dB) and high gain (> 5.58 dB). The proposed low-profile wideband tri-port antenna can be applied in highly integrated MIMO systems.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2021.3139647