Low-loss dielectric resonant devices having lattice structures with elongated resonant defects
First Claim
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1. A dielectric device comprising:
- a first dielectric material for receiving electromagnetic energy;
a lattice structure comprised of a plurality of elongate elements of a second dielectric material extending substantially in parallel to each other in a two-dimensional periodic arrangement within the first dielectric material, said lattice structure having dimensions proportioned such that electromagnetic energy having frequencies within a first frequency band is prevented from propagating through the lattice structure; and
a resonant defect structure located within the lattice structure for introducing a lattice imperfection into the lattice structure, the resonant defect structure having a resonant frequency within a second frequency band within the first frequency band such that electromagnetic energy having frequencies within the second frequency band is allowed to propagate through the lattice structure.
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Abstract
A dielectric resonator comprising a resonant defect structure diposed in a lattice structure formed of a plurality of multi-dimensional periodically arranged dielectric elements confines electromagnetic energy within a frequency band in the photonic band gap. The frequency band of the confined electromagnetic energy is tunable. The unique structure of the dielectric resonator leads to reduced power dissipation losses when used in microwave and millimeter wave components. Accordingly, the dielectric resonator may be used to produce high quality resonant cavities, filters and power generators.
121 Citations
10 Claims
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1. A dielectric device comprising:
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a first dielectric material for receiving electromagnetic energy; a lattice structure comprised of a plurality of elongate elements of a second dielectric material extending substantially in parallel to each other in a two-dimensional periodic arrangement within the first dielectric material, said lattice structure having dimensions proportioned such that electromagnetic energy having frequencies within a first frequency band is prevented from propagating through the lattice structure; and a resonant defect structure located within the lattice structure for introducing a lattice imperfection into the lattice structure, the resonant defect structure having a resonant frequency within a second frequency band within the first frequency band such that electromagnetic energy having frequencies within the second frequency band is allowed to propagate through the lattice structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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