3D printed artificial anisotropic antenna substrates

Research output: Contribution to conference (unpublished)Paperpeer-review

Authors

Colleges, School and Institutes

External organisations

  • Department of Electronic Electrical and Systems Engineering
  • BAE Systems plc

Abstract

In this paper, a design of a linear-to-circular polarization converter based on a 3D printed artificial periodic and anisotropic substrate (AAAS) is presented. The AAAS is a stack of thin sheets of PLA material with air gaps in between placed over a ground plane. The alternation of relative permittivity enables the conversion of a linearly polarised (LP) incident wave to a circular polarised (CP) reflected wave. A unit cell approach with periodic boundary conditions is employed for the design of the structure in full wave simulation software. Results demonstrate that the proposed 3D printed AAAS provides good angular stability. In fact, the simulated relative 3-dB axial ratio bandwidth always remains above 67% for incidence angles within ±45°. Using the AAAS as a substrate, a CP antenna application is proposed operating within the Kuband reducing the complexity of designing/feeding and fabricating of the primary antenna, which is particularly important for higher frequencies.

Details

Original languageEnglish
Publication statusPublished - 2019
EventAntennas and Propagation Conference 2019, APC 2019 - Birmingham, United Kingdom
Duration: 11 Nov 201912 Nov 2019

Conference

ConferenceAntennas and Propagation Conference 2019, APC 2019
CountryUnited Kingdom
CityBirmingham
Period11/11/1912/11/19

Keywords

  • 3D printed, Anisotropic material, Axial ratio (AR), Right-hand circular polarization (RHCP)

ASJC Scopus subject areas