A Transparent Proximity-Coupled-Fed Patch Antenna with Enhanced Bandwidth and Filtering Response

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Original languageEnglish
Article number2474
Pages (from-to)32774-32780
Journal / PublicationIEEE Access
Online published22 Feb 2021
Publication statusPublished - 2021



This paper introduces a novel transparent proximity-coupled-fed patch antenna with enhanced impedance bandwidth and good filtering response. The proposed antenna consists of a ground plane, a specific feeding structure and a slotted patch. All the conducting surfaces are realized with metal meshes printed on glass substrates. Optical transparency of the antenna depends on the mesh density. The feed line of a traditional proximity-coupled-fed patch antenna is terminated with a driven stub etched with a half-wavelength U-shaped slot. This modification introduces an additional resonant mode but also a radiating null. By further etching a pair of quarter-wavelength open slots on the radiating patch, another resonant mode accompanied with an extra radiation null is generated. Finally, three resonant modes within the operating band along with two radiation nulls near the two edges of the passband are achieved. The proposed antenna is implemented to demonstrate an impedance bandwidth of 7.6% from 3.41 to 3.68 GHz and a maximum gain of 4.6 dBi.

Research Area(s)

  • Antennas, Bandwidth, bandwidth enhancement, Filtering, filtering antenna, Glass, Impedance, metal mesh structure, proximity-coupled-fed, Slot antennas, Substrates, Transparent antenna

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