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A compact, lightweight, low-cost, dual-band antenna for GSM and DCS cellular telephone system applications is presented. The antenna, printed on a flexible printed circuit material and shaped round a foam former, is derived from the inverted-F geometry but has a much reduced conductor area. The software design package IE3D was used for design purposes and there was good agreement with measured results. The wide bandwidths required for this application are readily achieved using the antenna geometry. Radiation patterns give omni-directional coverage in the azimuth plane.
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Viratelle et al. (2000) studied this question.
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