Design of Circular Polarization Log-Periodic Antenna

Abstract

In order to enhance the receiving and transmitting characteristics and anti-interference the ability of the antenna. It has a great significance to study the circular polarization characteristics of the log-periodic antenna. The linear polarization log-periodic antenna is designed by using the control variable method to change the antenna scale factor and the shortest vibrator length. Circular polarization is realized by using the combination of two pairs of similar linear polarization log-periodic antenna. The optimal result parameters are obtained by simulation, and the circular polarization log-periodic antenna working in L-band with VSWR $\lt2.5$ is designed and implemented.