Simple low-cost planar antenna for indoor communication under the Bluetooth protocol

Simple low-cost planar antenna for indoor communication under the Bluetooth protocol

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A single-feed rectangular-ring microstrip antenna is proposed for indoor communication under the Bluetooth protocol. The dimensions of the antenna together with the location of the feed point are optimised through field simulations in order to cover the Bluetooth bandwidth and to avoid linear polarisation. The performance and the efficiency of the antenna are illustrated in a real indoor environment.


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