The application of FD-TD techniques to waveguide problems helps to obtain good information about the electromagnetic behaviour of any kind of discontinuity, in particular when the complicated nature of the boundary conditions makes the analytical treatment very difficult. So far, the method presents such disadvantages as the volume of computation involved and lack of analytical insight. It is possible, however, to recover equivalent circuits, which are prerequisites to effective CAD and synthesis, by the proper use of FD-TD analysis. In this contribution we show the power of the method in treating two classical problems, namely, the circuit modelling of the inductive-capacitive screw and that of the inductive rectangular post in classical waveguide. We then synthesize two actual filters by FDTD methods alone and compare the results obtained with previous ones showing the effectiveness of the approach.
Circuit modelling of waveguide discontinuities by FDTD methods / Moglie, Franco; Rozzi, Tullio; Pio, Marcozzi. - STAMPA. - (1993), pp. 668-669. (Intervento presentato al convegno 23rd European Microwave Conference tenutosi a Madrid, Spain nel 6-9 September 1993) [10.1109/EUMA.1993.336664].
Circuit modelling of waveguide discontinuities by FDTD methods
MOGLIE, FRANCO;ROZZI, TULLIO;
1993-01-01
Abstract
The application of FD-TD techniques to waveguide problems helps to obtain good information about the electromagnetic behaviour of any kind of discontinuity, in particular when the complicated nature of the boundary conditions makes the analytical treatment very difficult. So far, the method presents such disadvantages as the volume of computation involved and lack of analytical insight. It is possible, however, to recover equivalent circuits, which are prerequisites to effective CAD and synthesis, by the proper use of FD-TD analysis. In this contribution we show the power of the method in treating two classical problems, namely, the circuit modelling of the inductive-capacitive screw and that of the inductive rectangular post in classical waveguide. We then synthesize two actual filters by FDTD methods alone and compare the results obtained with previous ones showing the effectiveness of the approach.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
