Wide frequency band differential phase shifter with constant dif

Details Wide frequency band differential phase shifter with constant dif Wide frequency band differential phase shifter with constant dif

1985-03-01

1986-06-24

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

333 21A, 333 33, 333156, H01P 118

Patent

active

045969680

ABSTRACT:
Differential phase-shifter operating in a wide frequency band, with constant differential phase shifting. This device is characterized by the fact that it produces a differential phase shift between two perpendicular polarizations, with constant frequency. This way, differential phase shifters with the desired flatness in the band can be obtained, either of 180.degree. (polarizers for systems of linear polarization) or of 90.degree. (polarizer for transforming the circular polarization into linear polarization and vice versa). Such a phase shifter can be used generally in antenna systems.

REFERENCES:
patent: 2772400 (1956-11-01), Simmons
patent: 3118118 (1964-01-01), Watts, Jr.
patent: 3857112 (1974-12-01), Epis
patent: 4100514 (1978-07-01), DiTullio et al.

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