Mechanically Reconfigurable Multi-Band Antenna on a 3D-Printed Substrate for C/X Band Applications

In this paper, a multi-band Vivaldi antenna design on a 3D-printed substrate is presented. The frequency reconfiguration is achieved using different small dielectric bars. The proposed antenna was built using a low-cost PLA printed substrate and two layers of copper adhesive tape. The simulated and measured results confirm the good performance of this design operating as a frequency reconfigurable antenna covering the band from 3.5 GHz to 13.6 GHz. The design is suitable for applications in the C and X bands, including the 5.8 GHz ISM band, for uses in radar, medical devices, and IoT devices.