Radio frequency ridged waveguide antenna

Details Radio frequency ridged waveguide antenna Radio frequency ridged waveguide antenna

1980-11-24

1982-10-05

Lieberman, Eli

Communications: radio wave antennas

Antennas

Wave guide type

343771, H01Q 1302

Patent

active

043530745

ABSTRACT:
A radio frequency antenna comprising a waveguide having opposing relatively wide, upper and lower wall portions, a pair of opposing, relatively narrow side wall portions, and a relatively narrow rear wall portion, such portions being connected to provide a cavity having an open end disposed opposite the rear wall portion, the separation between the side wall portions decreasing as such side wall portions extend towards the rear wall portion. The waveguide includes a ridge disposed within the cavity, the decreasingly separated side wall portions of the waveguide being disposed between the ridge and the rear wall portion of the waveguide. The ridge is coupled to a coaxial transmission line. With such arrangement the decreasingly separated side wall portions of the waveguide improve the impedance matching between the coaxial transmission line and the ridged waveguide antenna element, thereby increasing the operating bandwidth of the ridged waveguide antenna element.

REFERENCES:
patent: 3555553 (1971-01-01), Boyns
patent: 3698000 (1972-10-01), Landry et al.
patent: 4063248 (1977-12-01), Debski et al.
patent: 4124851 (1978-11-01), Aaron

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