Title :
A New Brillouin Dispersion Diagram for 1-D Periodic Printed Structures
Author :
Baccarelli, Paolo ; Paulotto, Simone ; Jackson, David R. ; Oliner, Arthur A.
Author_Institution :
Univ. of Rome, Rome
fDate :
7/1/2007 12:00:00 AM
Abstract :
Dispersion and radiation properties for bound and leaky modes supported by 1-D printed periodic structures are investigated. A new type of Brillouin diagram is presented that accounts for different types of physical leakage, namely, leakage into one or more surface waves or also simultaneously into space. This new Brillouin diagram not only provides a physical insight into the dispersive behavior of such periodic structures, but it also provides a simple and convenient way to correctly choose the integration paths that arise from a spectral-domain moment-method analysis. Numerical results illustrate the usefulness of this new Brillouin diagram in explaining the leakage and stopband behavior for these types of periodic structures.
Keywords :
dispersion (wave); method of moments; periodic structures; spectral-domain analysis; waveguide theory; 1D periodic printed structures; Brillouin dispersion diagram; bound modes; dispersion properties; leaky modes; radiation properties; spectral-domain moment-method analysis; surface waves; Dielectric substrates; Dispersion; Filters; Leaky wave antennas; Metamaterials; Passband; Periodic structures; Slabs; Space exploration; Surface waves; Brillouin diagram; leaky waves; periodic structures; surface waves;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2007.900304