Corrugated electrical waveguide with permanent twist

Wave transmission lines and networks – Long lines – Waveguide type


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333242, H01P 312, H01P 314




A corrugated elliptical waveguide comprises a unitary, fluid-impervious, corrugated metallic tube with a substantially elliptical cross section. The corrugated tube is permanently twisted about its longitudinal axis for connecting two terminals having their E planes out of register with each other. The twist is uniformly distributed along a predetermined length of the corrugated tube. The twist is formed by twisting a corrugated circular waveguide about its longitudinal axis and simultaneously converting the circular cross section to an elliptical cross section, thereby causing the twist to be set in the elliptical waveguide.

patent: 3588760 (1971-06-01), Bondon et al.
patent: 3772772 (1973-11-01), Lehnert


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