Circular-linear polarizer including flat and curved portions

Details Circular-linear polarizer including flat and curved portions Circular-linear polarizer including flat and curved portions

1994-08-31

1998-06-02

Lee, Benny

Wave transmission lines and networks

Wave mode converters

333157, H01P 117

Patent

active

057606587

ABSTRACT:
A circular-linear polarizer includes a waveguide and a one quarter wave length plate which is installed on the inside wall of the waveguide. The surfaces of the waveguide and the one-quarter wave length plate forming the junction between them are flat. Alternatively, the one quarter wave length plate has a mounting surface for mounting on the inside wall of the waveguide. The mounting surface has a circular cross section which is complementary to the circular inside cross section of the waveguide. The junction provides improved electrical contact between the waveguide and the one-quarter wavelength plate. In addition, the cross polarization and axial ratio of the waveguide are improved while maintaining good impedance characteristics.

REFERENCES:
patent: 2546840 (1951-03-01), Tyrrell
patent: 2599753 (1952-10-01), Fox
patent: 2701344 (1955-02-01), Bowen
patent: 2741744 (1956-04-01), Driscoll
patent: 2858512 (1958-10-01), Barnett
patent: 2961618 (1960-11-01), Ohm
patent: 3577105 (1971-05-01), Jones, Jr.
patent: 4195270 (1980-03-01), Rainwater
patent: 4353041 (1982-10-01), Bryans et al.
Design Method for Circular Polarizer Using Waveguide Partially Filled with Conducting Wedge, T. Kaneki et al., Electronics and Communications in Japan, vol. 61-B, No. 12, (1978), pp. 66-73, no month.

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