Communications: radio wave antennas – Antennas – Wave guide type
Patent
1984-10-31
1987-04-14
Lieberman, Eli
Communications: radio wave antennas
Antennas
Wave guide type
343772, H01Q 1302
Patent
active
046582673
ABSTRACT:
A radio frequency antenna element is provided comprising a waveguide having disposed within and adjacent to a rearward portion of such waveguide a ridge, such ridge having a relatively narrow forward portion and a plurality of feeds, disposed within the waveguide, for coupling energy from a plurality of sources to a relatively wider, rearward portion of the ridge. The waveguide has a pair of opposing, relatively wide upper and lower walls and a pair of opposing, relatively narrow side walls. The relatively wider, rearward portion of the ridge tapers to the narrower forward portion of the ridge in a plane parallel to the upper and lower walls of the waveguide. The narrow portion of the ridge tapers towards one of the wider walls as such ridge extends from the rearward portion of the waveguide to the forward portion of the waveguide. With such arrangement, energy from a plurality of sources may be fed to the antenna element and such energy thereby combined within the antenna element itself rather than being combined externally of the antenna element. More particularly, energy fed to the plurality of feeds at the relatively wide rearward portion of the ridge combines as the energy passes from the relatively wide rearward portion of the ridge to the relatively narrow forward portion of such ridge.
REFERENCES:
patent: 2825060 (1958-02-01), Ruze
patent: 3100894 (1963-08-01), Giller et al.
patent: 3389394 (1968-06-01), Lewis
patent: 3458862 (1969-07-01), Franks
patent: 4353074 (1982-10-01), Monser et al.
Monser George J.
Roy Albert A.
Devlin Peter J.
Lieberman Eli
Maloney Denis G.
Raytheon Company
Sharkansky Richard M.
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