The idea of using textile materials for wearable antenna design has attracted much attention in the industry and academia because it is lightweight, flexible, and most importantly the textile antenna can be seamlessly integrated into garments. However, the wearable antennas which are made of flexible materials, such as textiles, have to face a common challenge: shape distortion. Unlike conventional antennas, which are usually fabricated by hard materials like metal and well protected within enclosures, wearable textile antennas will be integrated into clothes and operate directly on the human body surface. Therefore, it is very necessary to investigate the textile antenna performance under shape distortion conditions. This study focuses on the purely textile antenna design and the evaluation of the antenna performance under shape distortion conditions. Several types of antenna, such as coplanar waveguide fed (CPW) antenna and planar inverted-F antenna (PIF A), are fabricated in textile materials and investigated in 2.45 GHz wireless networking band. Moreover, the artificial magnetic conductor (AMC) structures and the microstrip antenna array are investigated in the latter part of this thesis. In this study, the textile antenna under test are not only bent, but also crumpled in different formats along the E-plane and H-plane. Both input impedance and radiation patterns are investigated, and the comparisons between simulation and measurement are analyzed.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:575081 |
| Date | January 2012 |
| Creators | Bai, Qiang |
| Publisher | University of Sheffield |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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