A longitudinal-transverse waveguide slot coupler has usually been modelled as a shunt-series ideal transformer. This is not true, nor is an approximation, even for resonant couplers. In this paper, we first present a discussion of the properties of such a slot coupler and of the admissible approximations which can be used in the coupler modelling. Then we derive an equivalent circuit in the form of a nonideal admittance inverter, which becomes an ideal one for resonant slots, and set the limit of the model itself.
A New circuital Model for the Longitudinal-Transverse Waveguide Slot Coupler
CASULA, GIOVANNI ANDREA;MAZZARELLA, GIUSEPPE;MONTISCI, GIORGIO
2005-01-01
Abstract
A longitudinal-transverse waveguide slot coupler has usually been modelled as a shunt-series ideal transformer. This is not true, nor is an approximation, even for resonant couplers. In this paper, we first present a discussion of the properties of such a slot coupler and of the admissible approximations which can be used in the coupler modelling. Then we derive an equivalent circuit in the form of a nonideal admittance inverter, which becomes an ideal one for resonant slots, and set the limit of the model itself.
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