Balanced phase septum polarizer

Details Balanced phase septum polarizer Balanced phase septum polarizer

1977-06-20

1978-11-21

Gensler, Paul L.

Wave transmission lines and networks

Wave mode converters

333 98R, H01P 116

Patent

active

041268350

ABSTRACT:
A balanced phase septum polarizer for converting a linearly polarized microwave signal to a circularly polarized microwave signal and vice versa. The septum polarizer includes a first waveguide, capable of propagating a circularly polarized microwave signal, and a septum that divides this waveguide into second and third waveguides each of which is capable of propagating a linearly polarized electric field microwave signal. The septum extends between opposite sides of the first waveguide and has an edge that is shaped to produce an inflection point in the phase angle vs. frequency function for the orthogonal electrical field components of the circularly polarized microwave signal. This results in a "balanced phase angle" relationship that permits reduction of the septum polarizer VSWR and improves significantly the axial ratio of the circularly polarized microwave signal.

REFERENCES:
patent: 3284725 (1966-11-01), Bowman
patent: 3955202 (1976-05-01), Young
Chen et al., A Wide-Band Square-Waveguide Array Polarizer, IEEE Trans. on A & P, May 1973, pp. 389-391.

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