3D-textile integrated corrugated horn antenna

The paper describes a corrugated substrate integrated horn antenna designed for surface wave excitation in the UWB band groups 3, 4, 5 and 6 (6-10 GHz). The antenna is optimized for integration into 3.4 mm thick textile of relative permittivity of 1.2. The corrugated substrate integrated waveguide is fed by a microstrip line and for connectivity a transition from microstrip line to coaxial line is designed. In order to enhance the impedance matching, we utilize thin strip lines placed in front of the aperture. The directivity of the antenna is 12.5 dBi at the 8 GHz and the antenna efficiency is about 70 %.