Corrugated horn having means for extracting divergence-measuring

Details Corrugated horn having means for extracting divergence-measuring Corrugated horn having means for extracting divergence-measuring

1974-12-18

1976-06-15

Lieberman, Eli

Communications: radio wave antennas

Antennas

Wave guide type

343852, H01Q 1302

Patent

active

039640701

ABSTRACT:
A horn of circular or rectangular cross-section has a multiplicity of circumferential grooves on its diverging inner peripheral wall; these grooves have a depth on the order of a quarter wavelength, at the upper end of the band of operating frequencies, and are separated by distances up to half a wavelength. Other discontinuities in this peripheral surface, serving to pick up odd modes for divergence-measuring purposes, are in the form of probes transverse to the horn wall disposed in one or more grooves or throughgoing slots lying between certain grooves or within same. The discontinuities may be arranged in pairs of diametrically opposite probes or slots, e.g. with two mutually orthogonal pairs disposed in a common transverse plane; probes in adjoining grooves may be interconnected by a transmission line.

REFERENCES:
patent: 3568204 (1971-03-01), Blaisdell

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