Waveguide antenna having a plurality of broad-side slots provide

Details Waveguide antenna having a plurality of broad-side slots provide Waveguide antenna having a plurality of broad-side slots provide

1991-02-21

1992-12-15

Hille, Rolf

Communications: radio wave antennas

Antennas

Slot type

343753, 343909, H01Q 1310

Patent

active

051721279

ABSTRACT:
A waveguide antenna (1) having a plurality of broad-side slots (S1-S3) is provided with one or more spatial filters (I, II) for suppressing the grid lobes (GL1,GL2) which occur in the radiated field as a result of the positioning of the slots. According to one embodiment, the spatial filter comprises two sections (I, II). The first section (I) comprises a box-like part which is mounted on the long side of the antenna waveguide (1) towards the slots (S1-S3) and has a height extension (a.sub.1) which is greater than or equal to the height extension (a) of the antenna waveguide. The other section (II) comprises two parallel walls which extend in the direction of the antenna axis. There is formed in this way an interface layer (G) which causes the grid lobes to be reflected back to the antenna aperture. A further embodiment of a spatial filter for the antenna waveguide is described.

REFERENCES:
patent: 2659005 (1953-11-01), Gruenberg
patent: 3303505 (1967-02-01), Bacon et al.
patent: 4021812 (1977-05-01), Schell et al.
patent: 4169268 (1979-09-01), Schell et al.
patent: 4431997 (1984-02-01), Sasser et al.
patent: 4495506 (1985-01-01), Sasser et al.
patent: 4841308 (1989-06-01), Terakawa et al.
patent: 5028933 (1991-07-01), Stangel et al.

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