Flared microwave horn with dielectric lens

Details Flared microwave horn with dielectric lens Flared microwave horn with dielectric lens

1974-09-11

1976-01-27

Lieberman, Eli

Communications: radio wave antennas

Antennas

Wave guide type

343783, H01Q 1306

Patent

active

039355772

ABSTRACT:
A dielectric lens for a flared microwave horn, the lens correcting the phase error introduced in microwaves passing through the horn. The lens comprises a plurality of parallel dielectric discs disposed concentrically with the horn in the path of microwaves passing through the horn. The disc have different diameters so that different portions of the microwaves pass through different numbers of the discs to compensate for the phase error introduced by the flared horn. The impedance discontinuities of the discs are matched out by appropriate spacing of the discs. The discs are preferably flat sheets of dielectric material so that they are easy to fabricate, and they are preferably supported by a central axial support means to minimize interference with microwaves passing through the discs. The number, thickness and diameters of the discs may be selected to produce substantially zero phase error in any given flared horn.

REFERENCES:
patent: 2588610 (1952-03-01), Boothroyd et al.
patent: 2719230 (1955-09-01), Smoll et al.
patent: 3099836 (1963-07-01), Carr
patent: 3329958 (1967-07-01), Anderson
patent: 3750182 (1973-07-01), Kernueis

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