The helicone—A circularly polarized antenna with low sidelobe level |
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Abstract: | An axial mode helix in a conical horn produces a circularly polarized pencil beam of low sidelobe level over a 2-to-1 bandwidth. The gain of the combination or "helicone" is four times that of a simple helix of the same length and the sidelobes are 15 to 20 dB lower. |
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