Dual-band WLAN button antenna for both on and off-body applications

A novel button antenna for WLAN applications is proposed. The antenna is composed of a button on top of a dielectric disc. The button is located on top of a textile substrate and a conductive textile ground. This antenna shows two different types of radiation patterns, a monopole type pattern in the 2.4 GHz band and a broadside type pattern in the 5 GHz band, thus both on and off-body function can be achieved. Measurements agree very well with simulations.

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