Journal
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
Volume 10, Issue -, Pages 1512-1515Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LAWP.2011.2181476
Keywords
Artificial impedance surface; high impedance surface; surface wave (SW); waveguide
Funding
- AFOSR [FA9550-09C-0198]
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We present simulations andmeasurements of surface-wave waveguides (SWGs) for guiding surface waves (SWs) along a constrained path. In its simplest form, the SWG is a two-dimensional analog to a dielectric waveguide where a low-index material surrounds a high-index material. The most common method for realizing materials with differing SW index is to use a grid of metallic patches of varying size on a dielectric substrate. Using asymmetric patches results in a tensor SW index. We show simulations of how the phase front of the guided surface wave can be precisely controlled using a combination of SW-index grading and rotation of the SW-index tensor. We present measurements of straight and curved SWGs showing how SWG width and curvature affect guiding properties.
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