A Free Access Mat by Tightly Coupled Patch Array for Short Range Wireless Access

Kunsun EOM  Hiroyuki ARAI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E90-C   No.12   pp.2254-2260
Publication Date: 2007/12/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e90-c.12.2254
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Recent Technologies for Microwave and Millimeter-wave Passive Devices)
Category: 
Keyword: 
free access mat,  open waveguide,  body area network,  personal area network,  proximate coupling,  ribbon-wire interconnect,  

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Summary: 
This paper presents a free access mat consisting of tightly coupled double layered microstrip resonator array to provide an easy access for devices in short range wireless communications. While in a conventional wireless access system the electromagnetic wave is radiated from a device to another through the free space using built-in antennas, the proposed wireless access system uses the free access mat to propagate the wave and the proximate coupling between the waveguide and the devices. The propagation loss in the mat is small, which is demonstrated by numerical simulation for basic elements of the free access mat. We also demonstrate small transmission loss including the coupling loss between dipole antennas and the free access mat. Finally experimental confirmation for all demonstrated characteristics is provided so that the free access mat is effective as a novel waveguide for a short range wireless access systems.