Equivalent Circuit for Receiving Lossy Dipole Antennas Using the Poynting Streamline Analysis

The characteristics of the receiving antenna can be analyzed by the Thevenin equivalent circuit, but this equivalent circuit has limitations in determining the loss and scattered powers for a lossy antenna when the antenna is close to a very large load impedance. In this paper, the Poynting streamline method is used to directly model the antenna as a receiver where the flow of the field energy around the antenna can be represented by generating streamlines of Poynting vector field. A new equivalent circuit is proposed for receiving lossy dipole antenna in the response of an incident plane wave to address the limitations of traditional Thevenin equivalent circuits.