Computer-aided design models for millimeter-wave suspended-substrate microstrip line
Choi, Man Soo.
Lee, H. M.
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An equivalent circuit model was derived for the series gap discontinuity in shielded suspended-substrate transmission line. Numerical values of the circuit parameters were computed for various sets of line dimensions, over a range of operating frequencies. The shielded suspended-substrate line is a transmission medium useful for radar and microwave circuits in the Ka band frequency range, 30 - 40 GHz. In order to utilize this transmission medium in the construction of microwave circuits and filters, it is necessary to have valid circuit models for typical discontinuous change in width. These discontinuity characteristics may be deduced on the basis of a calculation of their scattering coefficients for propagating waves in the medium. The approach chosen in this thesis, however, is that of placing the selected discontinuity in an open-ended strip resonator in the transmission medium. An appropriate circuit model is adopted for the given discontinuity, and its circuit elements are then deduced on the basis of the perturbation of the resonance frequency of the strip resonator which is induced by the mode. The boundary-value problem associated with the microstrip resonator structure has been approached in a rigorous manner based on a full-wave analysis which utilizes a process of solving the electromagnetic (EM) boundary value problem with inclusion of all the field components.
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Sudjiwo (Monterey California. Naval Postgraduate School, 1990-12);The open-end resonator in suspended substrate transmission line was analyzed in terms of two open-end discontinuities on a line segment. A procedure for computing the resonant frequency and constant of propagation was ...
Jin, Won Tae. (Monterey California. Naval Postgraduate School, 1990-09);The goal of this work is to develop an equivalent circuit model for a typical discontinuity in shielded suspended substrate line, in particular, the step-change in width. This circuit model is needed for use in CAD analysis ...
Kotronis, Anastasios K. (Monterey, California. Naval Postgraduate School, 1989-09);The scope of this thesis is to establish design rules for the shielded form of Suspended Substrate Stripline (SSL) as a propagation medium, and also to introduce a practical model for calculation of the gap dimensions of ...