An Optically Transparent Dual-Polarized Stacked Patch Antenna With Metal-Mesh Films

Chen Ding; Liangzhe Liu; Kwai-Man Luk

doi:10.1109/LAWP.2019.2935694

Author(s)

Related Research Unit(s)

Detail(s)

Original language	English
Article number	8801900
Pages (from-to)	1981-1985
Journal / Publication	IEEE Antennas and Wireless Propagation Letters
Volume	18
Issue number	10
Online published	15 Aug 2019
Publication status	Published - Oct 2019

Link(s)

DOI	DOI https://doi.org/10.1109/LAWP.2019.2935694 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85077465196&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(f63282e6-83df-466c-b652-f6094ded2ccc).html

Abstract

A wideband dual-polarized stacked patch antenna with optical transparency is proposed in this letter. The traditional metal plates are replaced by transparent conductive films made by printing metal meshes with sheet resistance of 0.5 ohm/sq to single side of Polyethylene terephthalate (PET). The planar conductive layers are separated by substrates made by transparent polymethyl methacrylate (PMMA) plates. The majority of the antenna area has a high optical transparency. A wide impedance bandwidth is realized by applying stacked round microstrip patches. The disk probes provide good impedance matching as well as small occlusion area. Measurement results show the antenna exhibits an impedance bandwidth of 19% (2.4-2.9 GHz, VSWR < 2) for both ports. The radiation efficiency is around 75%. The antenna has a stable unidirectional radiation pattern with low cross-polarization (< -17 dB) and low back-radiation level across the operating frequency band.