A Compact Flexible BLE Antenna for a Remote-Control Application

This paper presents simulations and measurements of compact flexible antennas printed on environmentally friendly substrates. These antennas have been designed for a green Remote-Control Unit (RCU) application. First, the state of the art of flexible antennas is presented. Then, the design of a compact meander dipole at the ISM frequency band (2.45 GHz), for a Bluetooth Low Energy (BLE) application, is detailed, highlighting the constraints induced by surrounding elements. Simulation and measurement results are presented, showing the antenna's performance respectively in free space and within an RCU casing. The effects of the casing and of a partial ground plane on the antenna's resonance frequency and radiation pattern are analyzed. This study concludes by emphasizing the potential of the proposed antenna solution for integration into remote-control units and IoT devices and suggests perspectives for further optimization.