A polyimide-based flexible monopole antenna

A polyimide (PI)-based flexible monopole antenna fed by coplanar waveguide (CPW) was fabricated by self-assembly technology. The measured characteristics indicate that the antenna under the flat state has the resonant frequency is f = 2.32 GHz, and the impedance bandwidths (| S 11 |< − 10 dB) are 36.44% (2.02–2.92 GHz). The radiation characteristics of the flexible monopole antenna in bending and folding states along different directions ( X - and Y -axis) are tested. Whether it is flat, bent or folded, the measured results meet the requirements of the antenna. The formed silver layers fabricated by self-assembly technology have good flexibility. The designed flexible monopole antenna is promised for integration within future flexible electronics.