Dielectric resonator type antennas
The present invention relates to a dielectric resonator antenna comprising a block ( 10 ) of dielectric material of which a first face intended to be mounted on an earth plane is covered with a metallic layer ( 11 ). According to the invention, at least one second face perpendicular to the first face is covered with a partial metallic layer ( 12 ) having a width less than the width of this second face. The invention applies in particular to DRA antennas for domestic wireless networks.
1. Dielectric resonator antenna comprising a block of dielectric resonator having a first face intended to be mounted on earth plane and entirely covered with a first metallic layer, wherein at least one second face perpendicular to the first face is covered with a second metallic layer contacting said metallic layer covering said first face, said second metallic layer covering said second face extending over a width less than the width of the second face and over a height less than or equal to the height of the second face, and wherein said block of dielectric resonator comprises a third face being at least partially unbounded by conductive material so as to emit radiation from said third face.
2. The antenna according to claim 1 , wherein the second metallic layer covering the second face is centred with respect to the width of the said second face.
3. The antenna according to claim 1 , wherein the second metallic layer covering the second face is extended via a third metallic layer covering a third face parallel to the first face.
4. The antenna according to claim 3 , wherein the third metallic layer covering the third face stretches over a width less than the length of the third face.
5. the antenna according to claim 3 , wherein the width of the third metallic layer covering the third face is different from the width of the second metallic layer covering the second face.
6. Dielectric resonator antenna comprising a single block of dielectric material having a first face, a second face, and a third face said block of dielectric material being mounted on a substrate with a face forming ground plane, the black of dielectric material having said first face mounted on said substrate entirely covered with a first metallic layer and said second face perpendicular to said first facc covered with a second metallic layer contacting said first metallic layer covering said first face, said second metallic layer covering said second face extending over a width less than the width of said second face and a height less than or equal to the height of said second face, said dielectric resonator being excited through a slot provided in the substrate and a microstrip line provided on a face of the substrate opposite to the face forming ground plane crossing said slot, and said third face being at least partially unbounded by conductive material so as to emit radiation from said third face.
7. The antenna according to claim 6 , wherein the second metallic layer covering the second face is extended via a third metallic layer covering a third face parallel to the first face.
8. The antenna according to claim 7 , wherein the third metallic layer covering the third face stretches over a width less than the length of the third face.
9. The antenna according to claim 8 , wherein the width of the third metallic layer covering the third face is different from the width of the second metallic layer covering the second face.