Radial waveguide channel electronic scan antenna

Details Radial waveguide channel electronic scan antenna Radial waveguide channel electronic scan antenna

1988-03-21

1991-07-02

Sikes, William L.

Communications: radio wave antennas

Antennas

Slot type

H01Q 1310

Patent

active

050289330

ABSTRACT:
A limited scan antenna wherein radiating element and phase requirements are reduced by positioning the radiating elements to radiate through a radial waveguide. The longer wavelength in the radial waveguide relative to the free space wavelength permits a wider actual separation, while maintaining grating lobe suppression. Wave refraction at the interface of the radial waveguide with free space is a function of the guide wavelength and determines the maximum scanning capability of the antenna.

REFERENCES:
patent: 2477510 (1949-07-01), Chu
patent: 2639383 (1953-05-01), Gruenberg
patent: 2648839 (1953-08-01), Ford et al.
patent: 2659005 (1953-11-01), Gruenberg
patent: 2761137 (1956-08-01), Atta et al.
patent: 2937373 (1960-05-01), Carter
patent: 3005984 (1961-10-01), Winter et al.
patent: 3303505 (1967-02-01), Bacon et al.
patent: 4841308 (1989-06-01), Terakawa et al.

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