Recent progress of developing Ka-Band Circular Polarizers

Some recent work on Ka Band Circular Linear-to-Polarizers carried out at the Microwave Group of University of Calabria (Italy) are presented. Four types of Linear Polarization (LP) to Circular Polarization (CP) converters, including three transmission type and one reflection type, are developed by using low cost standard Printed Circuit Board (PCB) technology. Experiments show that good performances are obtained for all proposed solutions.