Title :
Variational analysis of a gap in the central conductor of a rectangular coaxial line
Author :
Chattopadhyay, Sujit ; Saha, Pradip Kumar
Author_Institution :
Dept. of Telecommun., Gov. of India, Calcutta, India
fDate :
2/1/1999 12:00:00 AM
Abstract :
Rectangular coaxial line (RCL) discontinuity in the form of a gap in the central conductor and steps in the outer conductor in the planes of discontinuity has been analyzed by a variational method. The orthogonal-mode functions of an RCL required for numerical computation of the discontinuity parameters have been determined using the Ritz-Galerkin technique. The capacitances of the equivalent Pi-network are presented as function of gapwidth, normalized frequency, and ratio of outer conductor dimensions for complete characterization of the discontinuity. The low-frequency series and shunt capacitance values are verified against the static capacitances computed separately by the finite-difference technique
Keywords :
Galerkin method; capacitance; coaxial cables; equivalent circuits; transmission line theory; variational techniques; LF series capacitance values; LF shunt capacitance values; Ritz-Galerkin technique; capacitances; central conductor gap; coaxial line discontinuity; equivalent Pi-network; gapwidth; low-frequency capacitance; normalized frequency; numerical computation; orthogonal-mode functions; outer conductor dimensions; outer conductor steps; rectangular coaxial line; variational analysis; Apertures; Capacitance; Coaxial components; Conductors; Finite difference methods; Frequency; Impedance; Microwave bands; Microwave circuits; Rectangular waveguides;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
