Supplementary information for “Impact of reduced conductivity on the performance of wire antennas”

AbstractNo Abstract Found

Equivalent Circuit of Yagi-Uda antenna


Andersen and Vaughan (J. Andersen et al., 2003) considered the impact of the parasitic elements in the antenna equivalent circuit. They generalized Thevenin-Norton equivalent circuits to a multi port network for Yagi-Uda antennas with one port allocated to each parasitic element. Fig.S\ref{SI_Fig_Yagi_EqCir} shows a sample equivalent circuit of the Yagi-Uda antenna with three parasitic elements. Ports at the terminals of the parasitic elements are considered as short circuits while a voltage source is assumed for the receiving antenna. An ideal transformer is considered to convert impedance of the parasitic elements to the driver side.

\label{SI_Fig_Yagi_EqCir}Equivalent circuit of the Yagi-Uda antenna with 1 reflector and 2 directors