A 5G Wideband Patch Antenna with Antisymmetric L-shaped Probe Feeds

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Original languageEnglish
Article number8119517
Pages (from-to)957-961
Journal / PublicationIEEE Transactions on Antennas and Propagation
Issue number2
Online published23 Nov 2017
Publication statusPublished - Feb 2018


A dual-polarized patch antenna element fed by a pair of antisymmetric L-shaped probes is proposed. The designed twin L-shaped probe feeding structure is able to introduce feed capacitance to the antenna for broadband operation. The lengths of the two L-shaped probe feeds are identical, but the feeds are antisymmetric. This feeding design can minimize the unwanted radiation from the probe effectively. The dual-polarized antenna can be operated in the frequency band 1580-2750 MHz, which covers the current mobile communication systems, 3G and 4G and higher band frequencies. A prototype with dual slanted ±45° polarization has been fabricated for validation. Both the simulation and measured results show that the proposed antenna has wide bandwidth of 54% (SWR < 2) with desirable directional radiation patterns in the vertical and horizontal planes, as well as high isolation better than -30 dB between the two input ports.

Research Area(s)

  • Antenna feeds, antennas, broadband antenna, dual polarizations, patch antenna, radiation patterns