PROJECT TITLE :

Identifying Multiple Reflections in Distributed-Lumped High-Frequency Structures

ABSTRACT:

A technique for precise identification of reflections in mixed distributed-lumped high-frequency structures is proposed. The system structure that may be described by this model class may be a cascade of transmission lines tapped by lumped components. Here, multiple reflections are allowed to occur and they are identified. Reflections can be closely spaced and there's no restriction imposed by the model on the magnitude of the reflections. Note that the majority models in the literature are restricted to reflections with tiny magnitudes. Using a finite total of delayed damped advanced exponentials (Cisoids) to achieve the initial delay values and modeling each reflection with a rational model allows to identify reflections with high values of magnitude. When applied on a measurement example, the method identifies all the reflections that are gift, whereas the order of the model remains moderately low.