Surface wave guiding apparatus and method for guiding the surface wave along an arbitrary path
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United States of America Patent
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Jan 26, 2016
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app pub date -
Jan 17, 2013
filing date -
Jan 19, 2012
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Abstract
An artificial impedance surface for rotating a surface wave on the artificial surface about a point along a circumferential path relative to said point in a phase preserving manner along said circumferential path. A method of guiding a transverse electric or transverse magnetic surface wave bound to an artificial impedance surface along a non-linear path comprising: smoothly rotating a principal axis of a surface tensor impedance matrix of the artificial impedance surface as a function of space, so the a propagation wavevector of the transverse electric or transverse magnetic surface wave rotates along with it, remaining aligned with the direction of the principal axis; and tailoring a surface wavenumber in a propagation direction of the non-linear path in such a way as to maintain a constant-phase for a wavefront of the transverse electric or transverse magnetic surface wave.
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