Counter circularly-polarized curl antenna with a lossy structure

A curl antenna with a lossy structure is investigated. After presenting the lossless case (Case 0) as the reference for the investigation, the case where lossy capacitors are inserted into the curl arm (Case R_CL) is analyzed. Subsequently, the case where lossy inductors are inserted into the curl arm (Case R_LL) is investigated. It is found that the radiation pattern for each lossy case is similar to that for Case 0. The amount of reduction in the gain and radiation efficiency due to the losses is revealed.