Receiving head end for polarized microwaves, parabolic aerial an

Communications: radio wave antennas – Antennas – With polarization filter or converter

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333 21A, 343840, H01Q 1900, H01Q 1912

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active

048069450

ABSTRACT:
A receiving head end comprising only a single movable component, a front depolarizer (POM), for selecting conjugate polarized microwaves. The addition of a fixed depolarizer (POF) provides two aerial versions, one for the circular type of polarization and the other for the rectilinear type of polarization. The whole is fitted together for forming an aerial for the "public at large", simple to operate and whose shadow cast on the parabolic reflector is minimal.

REFERENCES:
patent: 3720947 (1973-03-01), Meyer et al.
patent: 4528528 (1985-07-01), Augustin
patent: 4613836 (1986-09-01), Evans
patent: 4672388 (1987-06-01), Grim

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