Wideband circularly polarized hybrid dielectric resonator antenna
First Claim
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1. A dielectric resonator antenna comprising:
- a dielectric resonator;
a ground plane, operatively coupled with the dielectric resonator, the ground plane having four independent slots with each slot being arc in shape and forming a ring configuration; and
a substrate, operatively coupled to the ground plane, having a feeding network consisting of four microstrip lines, with each microstrip line feeding independently into each slot;
wherein the four slots are constructed and geometrically arranged to ensure circular polarization and coupling to the dielectric resonator;
wherein the antenna feeding network combines the four microstrip lines with a 90 degree phase difference to generate circular polarization over a wide frequency band; and
wherein the feeding network includes a compact wideband rat-race combined with two surface mount (SMT) branch-line hybrid couplers.
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Abstract
The present invention provides a dielectric resonator antenna comprising: a dielectric resonator; a ground plane, operatively coupled with the dielectric resonator, the ground plane having four slots; and a substrate, operatively coupled to the ground plane, having a feeding network consisting of four microstrip lines; wherein the four slots are constructed and geometrically arranged to ensure proper circular polarization and coupling to the dielectric resonator; and wherein the antenna feeding network combines the four microstrip lines with a 90 degree phase difference to generate circular polarization over a wide frequency band.
253 Citations
15 Claims
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1. A dielectric resonator antenna comprising:
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a dielectric resonator; a ground plane, operatively coupled with the dielectric resonator, the ground plane having four independent slots with each slot being arc in shape and forming a ring configuration; and a substrate, operatively coupled to the ground plane, having a feeding network consisting of four microstrip lines, with each microstrip line feeding independently into each slot; wherein the four slots are constructed and geometrically arranged to ensure circular polarization and coupling to the dielectric resonator; wherein the antenna feeding network combines the four microstrip lines with a 90 degree phase difference to generate circular polarization over a wide frequency band; and wherein the feeding network includes a compact wideband rat-race combined with two surface mount (SMT) branch-line hybrid couplers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification