Title :
Axially Periodic Dielectric-Loaded Circular Waveguide for Microwave/Millimeter-Wave Devices
Author :
Han, Yong ; Nusinovich, Gregory S. ; Antonsen, Thomas M., Jr. ; Rodgers, J. ; Sinitsyn, Oleksandr V.
Author_Institution :
Inst. for Res. in Electron. & Appl. Phys., Univ. of Maryland, College Park, MD, USA
Abstract :
A circular waveguide loaded with periodic dielectrics is considered. Two theoretical methodologies have been developed to investigate the wave dispersion characteristics for such structure. The feasibility and accuracy of the theoretical approaches have been verified by high frequency structural simulator (HFSS) simulations. Using the theoretical approaches, effects of the material properties and structure dimensions on the dispersion characteristics, power distribution, coupling impedance, and wave attenuation have been analyzed, and results obtained for different structures have been compared. Examples of W-band structures with periodic dielectric loading that can be used in various microwave devices have been given. The presented methodologies and results can be used for design optimization of microwave devices with dielectric loading.
Keywords :
circular waveguides; dielectric bodies; dielectric-loaded waveguides; electromagnetic wave scattering; microwave devices; millimetre wave devices; HFSS; axially periodic dielectric loaded circular waveguide; coupling impedance; design optimization; high frequency structural simulator; microwave devices; millimeter wave devices; periodic dielectric loading; power distribution; wave attenuation; wave dispersion characteristics; Boundary conditions; Dielectrics; Dispersion; Harmonic analysis; Periodic structures; Permittivity; Coupling impedance; dispersion characteristics; periodic dielectric loading; pierce gain parameter; slow-wave structure;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2012.2223236
