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Ultra-wideband photonic band gap crystal having selectable and controllable bad gaps and methods for achieving photonic band gaps
Ultra-wideband photonic band gap crystal having selectable and controllable bad gaps and methods for achieving photonic band gaps
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机译：具有可选择和可控制的坏间隙的超宽带光子带隙晶体以及实现光子带隙的方法
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摘要
The present invention provides multidimensional stacked photonic band gap crystal structures improving the performance of current planar monolithic antennas and RF filters by forbidding radiation from coupling into the substrate thereby significantly enhancing radiation efficiency and bandwidth. This invention comprises a number of sub- crystals with each having at least two lattices disposed within a host material, each lattice having a plurality of dielectric pieces arranged and spaced from each other in a predetermined manner, the sub-crystals being stacked in a crystal structure to provide a photonic band gap forbidding electromagnetic radiation propagating over a specially designed frequency band gap, or stopband. Both two dimensional and multidimensional crystals are disclosed. The preferred embodiment is a three-dimensional photonic band gap crystal comprising two or more sub- crystals, with each sub- crystal having a diamond-patterned lattice constructed from a plurality of dielectric zigzag pieces orthogonally interconnected, disposed within a host material.
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