Compact Quad-Mode Planar Phased Array with Wideband for 5G Mobile Terminals

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Abstract

In this paper a quad-mode endfire planar phased antenna array with wide scan angle and 1.2mm clearance is proposed for 5G mobile terminals. The proposed antenna can obtain over 8 GHz of impedance bandwidth. Here is suggested to efficiently combine a multi-mode array element with different radiation patterns for each mode into a phased antenna array. In the array, similar and wide embedded radiation patterns are obtained for the all four modes. Furthermore, a coaxial to differential stripline transition is designed in this work. The differential feeding structure is very compact and utilizes only MMPX connector and vias. The total scan pattern and coverage efficiency of the measured and simulated phased array antenna are calculated in the range from 25 to 33 GHz, and a good agreement between measured and simulated results is observed. The mean coverage efficiency along the frequency range is very similar, but minor difference in variance of coverage efficiency is observed in the measurements. The coverage efficiency of around 50% for the threshold gain of 5 dBi is achieved in the chosen frequency range.
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In this paper a quad-mode endfire planar phased antenna array with wide scan angle and 1.2mm clearance is proposed for 5G mobile terminals. The proposed antenna can obtain over 8 GHz of impedance bandwidth. Here is suggested to efficiently combine a multi-mode array element with different radiation patterns for each mode into a phased antenna array. In the array, similar and wide embedded radiation patterns are obtained for the all four modes. Furthermore, a coaxial to differential stripline transition is designed in this work. The differential feeding structure is very compact and utilizes only MMPX connector and vias. The total scan pattern and coverage efficiency of the measured and simulated phased array antenna are calculated in the range from 25 to 33 GHz, and a good agreement between measured and simulated results is observed. The mean coverage efficiency along the frequency range is very similar, but minor difference in variance of coverage efficiency is observed in the measurements. The coverage efficiency of around 50% for the threshold gain of 5 dBi is achieved in the chosen frequency range.
Original languageEnglish
JournalI E E E Transactions on Antennas and Propagation
Volume66
Issue number9
Pages (from-to)4648 - 4657
Number of pages10
ISSN0018-926X
DOI
Publication statusPublished - 2018
Publication categoryResearch
Peer-reviewedYes

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