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Using EBG to improve antenna efficiency in proximity to the human body
This paper presents a 2.45 GHz patch antenna over an ERG substrate with the objective of higher radiation
efficiency and compact operation in close proximity to a lossy medium, both of which are critical for body worn
antennas. To achieve compact size, several sizes of ERG are included and the individual antenna efficiency and
radiation pattern are studied. From these results, the ERG substrate demonstrates great improvement of the antenna
efficiency but its size has a considerable effect on efficiency when the antenna is used in close proximity to
the human body.
Key words: RF-35, CER-10, 2.45 GHz patch antenna, ERG, human wearable antenna, WBAN
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