A Compact Wideband Monopole Antenna for Indoor Positioning System

The UWB indoor positioning system is always a tradeoff between precision accuracy and equipment cost of high prices. For reducing the cost, we applied the EPS32 board to operate with the DW1000 chip for the UWB application. In this paper, we design a novel compact wideband monopole antenna that has nearly omnidirectional propagation to support the various tag locations on assets and the reduced size of UWB tags for indoor positioning systems. The proposed monopole antenna is made from an oval patch with a coaxial supplied by a 50 ohm and a rectangular ground plane formed by etching into stages. The monopole antenna was designed to operate at frequencies ranging from 3.14 GHz to 6.72 GHz and has 20×30×0.8 mm3 dimensions.