Circularly polarized L band antenna for pico-satellites

This work present an circularly polarized L Band antenna for terrestrial satellite observation services. The design is based on two crossed dipoles fed by a coaxial cable, and a flat reflector to improve the characteristics of the radiation pattern. The dipoles are implemented on PCB and the assembly is designed considering the weight and size constraints imposed by aerospace technology. Simulation results of the main characteristics of the antenna are shown as well as impedance and axial ratio measurements performed on a prototype built in FR4.