Dielectric resonator antenna
A dielectric resonator antenna includes a dielectric resonator element, a ground plane, and a conductive feeding arrangement. The ground plane is connected with the dielectric resonator element, and is operable to generate a first electromagnetic radiation. The conductive feeding arrangement is operable to generate a second electromagnetic radiation. During operation, simultaneous generation of the first electromagnetic radiation and the second electromagnetic radiation provides a unilateral electromagnetic radiation.
1. A dielectric resonator antenna, comprising:
a dielectric resonator element with a body having a wall;
a ground plane in the form of a patch, attached to the wall of the dielectric resonator element, the ground plane being sized smaller than the wall of the dielectric resonator and being operable to be fed into and excite the dielectric resonator element to a dielectric resonator mode to generate a first electromagnetic radiation; and
a conductive feeding arrangement comprising a feeding probe received in a space defined by the body and operable to be fed into and excite the dielectric resonator element to generate a second electromagnetic radiation different from and complementary to the first electromagnetic radiation;
wherein, during operation, simultaneous generation of the first electromagnetic radiation and the second electromagnetic radiation provides a unilateral electromagnetic radiation.
2. The dielectric resonator antenna of claim 1 , wherein the first electromagnetic radiation is directed to a first direction and the second electromagnetic radiation is directed to a second direction substantially perpendicular to the first direction.
3. The dielectric resonator antenna of claim 1 , wherein the first electromagnetic radiation comprises a magnetic dipole.
4. The dielectric resonator antenna of claim 1 , wherein the dielectric resonator mode is TE 111 mode.
5. The dielectric resonator antenna of claim 1 , wherein the ground plane is provided on a dielectric substrate.
6. The dielectric resonator antenna of claim 1 , wherein an angular position or orientation of the ground plane relative to the dielectric resonator element is adjustable.
7. The dielectric resonator antenna of claim 1 , wherein a footprint of the ground plane is less than 50% of a footprint of the dielectric resonator element.
8. The dielectric resonator antenna of claim 1 , wherein a footprint of the ground plane is less than 20% of a footprint of the dielectric resonator element.
9. The dielectric resonator antenna of claim 1 , wherein the second electromagnetic radiation comprises electric dipole.
10. The dielectric resonator antenna of claim 1 , wherein the conductive feeding arrangement is arranged centrally of the dielectric resonator element.
11. The dielectric resonator antenna of claim 1 , wherein the feeding probe comprises any of: a cylindrical probe, a conical probe, an inverted conical probe, and a stepped cylindrical probe.
12. The dielectric resonator antenna of claim 1 , wherein the feeding probe is an inner conductor of a cable.
13. The dielectric resonator antenna of claim 12 , wherein the cable further comprises an outer conductor operably connected with the ground plane, and the inner and outer conductors are co-axial.
14. The dielectric resonator antenna of claim 1 , wherein the dielectric resonator element comprises a cuboidal body defining a space therein for at least partly receiving the conductive feeding arrangement.
15. The dielectric resonator antenna of claim 1 , wherein the conductive feeding arrangement is substantially perpendicular to the wall of the dielectric resonator element.
16. The dielectric resonator antenna of claim 1 , wherein the conductive feeding arrangement is substantially perpendicular to the ground plane.
17. The dielectric resonator antenna of claim 1 , wherein the dielectric resonator antenna is arranged to operate at LTE band.
18. A dielectric resonator antenna array comprising one or more of the dielectric resonator antenna of claim 1 .
19. A wireless communication system comprising one or more of the dielectric resonator antenna of claim 1 .
20. The dielectric resonator antenna of claim 1 , wherein the first electromagnetic radiation comprises a y-directed magnetic dipole and the second electromagnetic radiation comprises a z-directed electric dipole.