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This paper presents the design and characterization of a compact wearable aperture-coupled shorted patch antenna combined with flexible solar cells covering the 902-928 MHz ISM band. The antenna is constructed solely out of flexible foam and textile materials. The parallel connected amorphous silicon (a:Si-H) solar cells are able to deliver a maximum DC power output of about 96 mW. Combining solar cells with a shorted patch antenna allows a simple realization of the DC output wire connections without disturbing the antenna's radiation characteristics. A measured on-body antenna gain and bandwidth of about 1.6 dBi and 63 MHz are realized, respectively.
Date of Conference: 11-15 April 2011