Design of a Compact Textile Crown Antenna Integrated with AMC for Wearable IoT Applications

A compact crown-shaped planar antenna integrated with a 3 × 3 artificial magnetic conductor (AMC) ground is presented for wearable internet of things communications. Simulations were performed using the commercial software FEKO based on two approaches: characteristic mode analysis and the method of moments. This paper aims to optimize the operation of the AMC reflector by studying and understanding its mode behavior. Results show that the proposed antennas operate at 5.8 GHz with acceptable radiation characteristics in terms of reflection coefficients, realized gain of 8 dBi, and a front-to-back ratio of 17.33 dB. Moreover, the flexible features of the antenna make it suitable for wearable IoT applications.