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access icon free Knitted, textile, high impedance surface with integrated conducting vias

  • Author(s): A. Tennant 1 ; W. Hurley 2 ; T. Dias 2
    • View affiliations
    • Affiliations: 1: Department of Electronic and Electrical Engineering, University of Sheffield, Mappin Street, Sheffield, S1 3JD, United Kingdom;
      2: Advanced Textiles Research Group, School of Art and Design, Nottingham Trent University, United Kingdom
  • Source: Volume 49, Issue 1, 03 January 2013, p. 8 – 10
    DOI:  10.1049/el.2012.3896 , Print ISSN 0013-5194, Online ISSN 1350-911X
© The Institution of Engineering and Technology
Received 06/11/2012, Published

An experimental, microwave high impedance surface (HIS) manufactured from a combination of both conducting and insulating yarns using commercial, computerised flat-bed knitting machines is presented. The HIS consists of a knitted, conducting ground plane, a polyester spacer layer and a knitted, conducting patterned top surface. The structure also contains vias that link the conducting elements of the top layer to the ground plane. The entire structure (including the vias) is knitted in one continuous process that is both low cost and highly efficient in terms of manufacturing time. Measurements of the surface wave transmission properties of the knitted, textile HIS are made and data are presented that show that the HIS prevents surface wave transmission over a band of frequencies between 4 and 5GHz.

Inspec keywords: vias; woven composites; yarn; knitting machines; microwave devices; textiles; microwave materials

Other keywords: integrated conducting via; computerised flat bed knitting machine; conducting yarn; polyester spacer layer; microwave high impedance surface; insulating yarn; textile; conducting ground plane; frequency 4 GHz; knitted conducting patterned top surface; frequency 5 GHz

References

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