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US 5,229,737 AGranted
Ferrite polarizer
AssigneeMarconi Electronic Devices Limited
InventorBrian Prime
Life of this patent
Estimating the term…
Abstract
A polariser particularly suitable for use in receiving satellite television signals includes a ferrite rod located within a waveguide, a yoke co-extensive with the ferrite member and a coil wound around the yoke. The yoke preferably is "U" shaped and includes an arm which projects into the waveguide at the end of the ferrite rod remote from the input of the waveguide.
Claims8
A polariser arrangement comprising:
- a ferrite member located within a waveguide,
- a yoke having a first portion located within the waveguide and a second portion located outside the waveguide with an air gap in a magnetic flux path between the ferrite member and the yoke;
- and
- a coil outside the waveguide wound around said second portion, whereby current applied to said coil affects the polarization of radiation of said ferrite member.
1 more element
Dependencies are inferred from the claim text.