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OMT 43GHz

The OMTs (OrthoMode Transducers) are passive components of front-ends of radio receivers, used in radio astronomy to separate orthogonal components in linear polarization of the electromagnetic signal coming from the celestial body under observation.

In the image, there are the OMTs of the new 43Ghz Multifeed receiver featuring 19 elements made for the INAF Sardinia Radio Telescope; OMTs are produced using the platelet technology by CNC mechanical manufacturing with high speed milling and wire electrical discharge machining. The average precision of this kind of production is to within a hundredth of a millimeter both as for dimension and geometries. The component can work in the 33.5‑50 GHz band with insertion loss lower than 1% and isolation among linear polarizations lower than one part per thousand.

http://www.inaf.it/en