Communications: radio wave antennas – Antennas – Antenna components
Patent
1996-09-05
1999-11-23
Le, Hoanganh
Communications: radio wave antennas
Antennas
Antenna components
343909, H01Q 1514, H01Q 1502
Patent
active
059908505
ABSTRACT:
A metallodielectric photonic crystal including a plurality of elements, each having a non-dielectric component, arranged with respect to each other in a three-dimensionally periodic lattice. The non-dielectric components being spatially isolated from one another, the lattice exhibiting a band gap in the spectrum of electromagnetic radiation modes propagating through said lattice. A support structure positions the elements in the three-dimensionally periodic lattice. In an exemplary embodiment, the elements are metallic spheres arranged within dielectric material. The three-dimensionally periodic lattice can include a face-centered-cubic lattice which exhibits a unidirectional photonic band gap, or a diamond lattice which exhibits an omnidirectional photonic band gap. The diamond lattice structure includes a gap width to midgap frequency ratio which can exceed 60%.
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Brown Elliott R.
Fan Shanhui
Joannopoulos John D.
McMahon Oliver B.
Villeneuve Pierre R.
Le Hoang-anh
Massachusetts Institute of Technology
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