Dielectric resonator antenna with microstrip feed line

摘要

A dielectric resonator element 20 is mounted on a microstrip feedline 25 formed on a surface of a grounded substrate 23. The feedline 25 is provided with a connector 26. The planar surface of the dielectric resonator which contacts the feedline may be completely or partially provided with a conductive metallised layer. The feedline extends beyond the dielectric resonator so as to form an overhang 29, which may be curved or bent in the plane of the substrate. The length of the overhang may be varied so as to tune the dielectric resonator antenna (DRA). A capacitor may be provided at the end of the microstrip feedline. Several of such antennas may be arranged end to end to form an array with reduced coupling between adjacent elements and with vertical polarisation, useful for mobile communications applications.