Linear-circular polarizer having tapered polarization structures

Details Linear-circular polarizer having tapered polarization structures Linear-circular polarizer having tapered polarization structures

1995-09-12

1998-03-03

Lee, Benny T.

Communications: radio wave antennas

Antennas

With polarization filter or converter

333 21A, 333157, H01P 1165, H01Q 1524

Patent

active

057240507

ABSTRACT:
A linear-circular polarizer used for the transmission in the microwave band, which provides excellent impedance characteristics and stabilized cross polarization characteristics by having 1/4 wavelength phase plates and the inner surface of a circular waveguide made in one-piece for the purpose of cost and production step reduction. The linear-circular polarizer includes a pair of 1/4 wavelength phase plates of a specified width and height formed opposite to each other and symmetric with respect to the waveguides central axis. The 1/4 wavelength phase plates are formed on the inner surface of a circular waveguide at a closed end opposite to an end where a primary radiator is located.

REFERENCES:
patent: 2546840 (1951-03-01), Tyrrell
patent: 3758882 (1973-09-01), Morz
patent: 4523160 (1985-06-01), Ploussios
patent: 4686537 (1987-08-01), Hidaki
patent: 4920351 (1990-04-01), Bartlett et al.

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