A device for setting the ellipticity the polarization of the radiation emitted from a radar device

摘要

805,977. Waveguide accessories. DECCA RECORD CO. Ltd. May 17, 1956 [Nov. 4, 1955], No. 31669/55. Class 40 (8). [Also in Group XL (c)] In a pulse radar apparatus (see Group XL (c)), an adjustable polarization unit for converting plane polarized signals to elliptically polarized signals fed to horn radiator 42, and vice versa, includes (see Fig. 2), transition section 22 between rectangular and square waveguides 20, 23, transition section 29 to produce a square guide at 45 degrees to square guide 23 and a phase shifter comprising a movable dielectric slab 35. Rectangular slot 25 in one wall of guide 23 couples signals of polarization transverse to that required into rectangular guide 26 containing absorbing loads 27, 28. The phase shifter may be remotely controlled via cam-shaft 39.