Partial dielectric loaded septum polarizer

A waveguide device comprising:

• a first common waveguide;
• a polarizer section having a first end coupled to the first common waveguide and further having a second end, the polarizer section including a conductive septum having a shaped edge beginning at the first end, wherein the conductive septum divides the first common waveguide into a first divided waveguide portion and a second divided waveguide portion at the second end;
• a second waveguide coupled to the first divided waveguide portion of the polarizer section;
• a third waveguide coupled to the second divided waveguide portion of the polarizer section;
• and
• a dielectric insert including a first dielectric portion partially filling the polarizer section, wherein the conductive septum and the first dielectric portion convert a signal between a polarized state in the first common waveguide and a first polarization component in the second waveguide and second polarization component in the third waveguide.