Variable polarisation weak secondary lobe antenna - has non-resonant radiant windows in which line coupling varies when moved on coaxial-line

摘要

The antenna has a variable polarisation and weak secondary lobes with two sub-assemblies of coaxial lines of square cross-section supplied in independent manner. One of the sub-assemblies has, as radiating elements, windows at 45 degrees and the other windows at less than 45 degrees. The radiating elements (22p,22'p) are non resonant windows or groups of windows with a length (1p) and therefore coupling with the line, which varies when moved on a coaxial line of a generator towards the load terminal. The variation of the light amplitude of each element follows, along the line, a Taylor law. The distance (dp) between two successive elements is variable and depends on the coupling of that one closer to the generator.