Dual-polarization cylindrical long slot array (CLSA) antenna integrated with compact broadband baluns and slot impedance transformers

In this paper a realistic method for feeding the dipole mode of the dual-polarized CLSA antenna is presented. A compact lumped-element impedance transforming balun is designed, fabricated, and tested with a broadband dipole. The broadband balun is then simulated to verify its performance in the dual-polarized CLSA antenna along with the slot impedance transformers. This antenna has the capability of achieving 4 polarization modes (vertical, horizontal, LHCP, RHCP).