Waveguides in EBG Structures Formed From Cylinders with Controlled Elements

摘要

-Uniform EBG structures in the form of 2D lattices in a planar waveguide are analyzed. The structures are formed from metal cylinders with gaps containing controlled capacitors. Eigenmodes of such structures are studied and dependences of the stopband width and position on the structure parameters are investigated. Eigenmodes in a waveguide formed in an EBG structure by changing the capacitor capacitances in an infinite row of the lattice cylinders are analyzed. It is shown that application of cylinders with controlled capacitors allows formation of electrically controlled defects inside a uniform EBG structure such that the set of these defects has properties of waveguides. Quantitative characteristics of such waveguides are studied.