CONNECTING A LUMPED ELEMENT TO THE STRIP ANTENNA

To properly incorporate a lumped element into the Cagniard‐DeHoop method of moments, one may adopt the strategy applied to (loaded) thin‐wire antennas. Along these lines, this chapter first modifies the boundary condition by assuming a localized load uniformly distributed over the width of the strip. Assuming now that the lumped element is connected in between two discretization nodes, the induced electric‐current surface density can be linearly interpolated in between the nodes. It is demonstrated that a lumped element can be incorporated in the computational scheme by modifying the surface boundary condition at the position where the element is connected. In this way, the impact of a lumped element is taken into account in an isolated impeditivity matrix whose elements are closely specified for a lumped resistor, capacitor, and inductor.