CPC H01P 3/16 (2013.01) | 15 Claims |
1. A waveguide for receiving an incident electromagnetic wave (EMW) having an operating frequency Γ and comprising an array of spaced apart unit cells arranged along the waveguide, the unit cells configured to resonantly couple to the incident EMW and radiate an EMW at the operating frequency propagating inside and along the waveguide, each unit cell configured to couple to the incident EMW with a first coupling efficiency and comprising:
a dielectric body configured to couple to the incident EMW with a second coupling efficiency; and
one or more metal layers disposed on and partially covering the dielectric body, wherein the second coupling efficiency is substantially smaller than the first coupling efficiency.
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