The three-band non adjustable polarization selector on the basis of two coaxials

Results of development the three-band non adjustable polarization selector (frequencies f/sub 1/, f/sub 2/=1.15/spl times/f/sub 1/, and f/sub 3/=2/spl times/f/sub 1/) with ellipticity of 0.7-0.8 and VSWR<1.25 are reported. In the selector, coaxials with wave H/sub 11/ and new technical solutions are used to form the input frequency diplexer, polarizers and coaxial-to-waveguide junctions.