Title :
Cut-off wave number and dispersion characteristics of eccentric annular guide with dielectric support
Author :
Dey, Ranajit ; Agnihotri, Ila ; Chakrabarty, Soumybrata ; Sharma, Shashi
Author_Institution :
Antenna Syst. Area, Space Applic. Centre, Ahmedabad
Abstract :
The paper presents a rigorous analysis of a uniform waveguide with circular outer conductor and eccentric inner conductor supported by dielectric slab between the inner and outer conductors. A vector finite element approach in which non-physical spurious solutions do not appear has been followed to study the cut-off frequencies of higher-order modes as well as dispersion characteristics of this guiding structure. Numerical data on cut-off wave numbers and dispersion characteristics have been presented.
Keywords :
circular waveguides; conducting bodies; dielectric bodies; dielectric waveguides; finite element analysis; permittivity; slabs; circular outer conductor; cut-off wave number; dielectric slab; dielectric support; dispersion characteristics; eccentric annular guide; eccentric inner conductor; higher-order modes; nonphysical spurious solution; uniform waveguide; vector finite element approach; Conductors; Cutoff frequency; Dielectrics; Finite element methods; Geometry; Partial differential equations; Permeability; Permittivity; Slabs; Transmission line matrix methods; Eccentric annular cross-section; Helmholtz equation; edge elements; vector finite element;
Conference_Titel :
Applied Electromagnetics Conference, 2007. AEMC 2007. IEEE
Conference_Location :
Kolkata
Print_ISBN :
978-1-4244-1863-3
Electronic_ISBN :
978-1-4244-1864-0
DOI :
10.1109/AEMC.2007.4638043
