Steerable-beam multiple-feed dielectric resonator antenna
First Claim
1. A dielectric resonator antenna including a grounded substrate, a dielectric resonator disposed on the grounded substrate and at least three feeds for transferring energy into and from different regions of the dielectric resonator, the feeds being activatable individually or in combination so as to produce at least one incrementally or continuously steerable beam which is steerable through a predetermined angle.
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Accused Products
Abstract
A radiating antenna capable of generating or receiving radiation using a plurality of feeds and a dielectric resonator is disclosed. The purpose of using multiple feeds with a single dielectric resonator antenna is to produce several beams each having a ‘boresight’ (that is, a direction of maximum radiation on transmit, or a direction of maximum sensitivity on receive) in a different direction. Several such beams may be excited simultaneously to form a new beam in any arbitrary direction. The new beam may be incrementally or continuously steerable and may be steered through a complete 360 degree circle. The invention may be combined with an internal or external monopole antenna so as to cancel out the antenna backlobe or otherwise resolve the front/back ambiguity that arises with this type of dielectric resonance antenna. When receiving radio signals, electronic processing of such multiple beams may be used to find the direction of those signals thus forming the basis of a radio direction finding device. Further, by forming a transmitting beam or resolving a receiving beam in the direction of the incoming radio signal, a ‘smart’ or ‘intelligent’ antenna may be constructed. The excitation of several beams together can, in some combinations, produce a system with a significantly greater bandwidth than a beam formed by exciting a single probe or aperture. The dielectric resonator is mounted on a ground plane, is preferably substantially cylindrical, and is fed, for example, by a number of internal probes or external ground plane apertures. An internal or external monopole antenna may be added to improve performance.
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Citations
32 Claims
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1. A dielectric resonator antenna including a grounded substrate, a dielectric resonator disposed on the grounded substrate and at least three feeds for transferring energy into and from different regions of the dielectric resonator, the feeds being activatable individually or in combination so as to produce at least one incrementally or continuously steerable beam which is steerable through a predetermined angle.
- 2. A dielectric resonator antenna system including a grounded substrate, a dielectric resonator disposed on the grounded substrate, a plurality of feeds for transferring energy into and from different regions of the dielectric resonator, and electronic circuitry to activate the feeds individually or in combination so as to produce at least one incrementally or continuously steerable beam which is steerable through a predetermined angle.
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31. A dielectric resonator antenna system including a grounded substrate, a dielectric resonator disposed on the grounded substrate, at least three feeds for transferring energy into and from different regions of the dielectric resonator, and electronic circuitry for activating the feeds individually so as to produce at least one incrementally steerable beam which is steerable through a predetermined angle.
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32. A dielectric resonator antenna system including a grounded substrate, a dielectric resonator disposed on the grounded substrate, at least three feeds for transferring energy into and from different regions of the dielectric resonator, and electronic circuitry for activating the feeds by varying a power division between the feeds so as to produce at least one incrementally or continuously steerable beam which is steerable through a predetermined angle.
Specification