CEDs - Converging-Element Doublets

Converging-Element Doublet (CED) is an antenna based on a simple doublet but having another element or other elements accompanying the main radiator. The central parts of the main radiator and the accompanying element(s) are connected with the help of an air insulated 2-wire line. The accompanying element(s) are at some distance from the main radiator and this distance is not constant along the doublet arms but grows smaller when we approach the ends of the arms.