Circular waveguide amplitude commutator

Details Circular waveguide amplitude commutator Circular waveguide amplitude commutator

1988-03-07

1990-05-29

Laroche, Eugene R.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

342434, 343777, 333137, H01Q 326, H01P 512

Patent

active

049299557

ABSTRACT:
A circular waveguide section which is suitably excited with a TM.sub.01 and two spatially orthogonal TE.sub.11 modes to form a cosine-squared-on-a pedestal amplitude distribution at the outputs of the circular waveguide. The resulting cosine-squared-on-a-pedestal amplitude taper may be distributed to the elements of a circular phased array to form a low sidelobe antenna. Since the waveguide is a reciprocal element, it can be used in a receiver as well as a transmitter.

REFERENCES:
patent: 3290682 (1966-12-01), Ajioka
patent: 3728648 (1973-04-01), Lerner
patent: 4005379 (1977-01-01), Lerner
patent: 4091334 (1978-05-01), Sechi
patent: 4103262 (1978-07-01), Woodward
patent: 4158183 (1979-06-01), Wong et al.
patent: 4367446 (1983-01-01), Hall
patent: 4446463 (1984-05-01), Irzinski
patent: 4566012 (1986-01-01), Choung et al.
IEEE, Transactions on Microwave Theory and Techniques, vol. MTT-29, No. 3, Mar. 1981.

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