Wideband Dual-Polarized Endfire Phased Array Antenna with Small Ground Clearance for 5G mmWave Mobile Terminals
Journal article, 2023

A dual-polarized endfire phased array antenna is presented for 5G mmWave mobile terminal applications. The antenna element combines a pair of top-hat dipoles with an open slot in two substrate layers. The dipole is excited by an open-ended substrate integrated waveguide (SIW) for vertical polarization, and the slot is coupled by a bent stripline for horizontal polarization. Both radiators can provide wide bandwidth, and share a small ground clearance of merely 1.6 mm. A $1\times4$ phased array is designed with an element spacing of 6 mm. Decoupling vias and decoupling slots are added between elements to improve port isolation. The simulated and measured overlapped bandwidth of the two polarizations are 21.4% and 14.6%, respectively. The isolation between any two ports is higher than 18 dB. The measured scanning beams of both polarizations are capable of covering ±42° within 3-dB gain variation.

dual-polarization

5G mobile terminal antennas

endfire antennas

mmWave phased arrays

Author

Yuqing Zhu

Beijing Institute of Technology

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Changjiang Deng

Beijing Institute of Technology

IEEE Transactions on Antennas and Propagation

0018926x (ISSN) 15582221 (eISSN)

Vol. 71 6 5469-5474

Subject Categories

Telecommunications

Signal Processing

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TAP.2023.3263007

More information

Latest update

6/29/2023