Waveguide coaxial converter including susceptance matching means

Abstract

Disclosed is a waveguide coaxial converter in the form of a rectangular tube, open at an end opposite a closed end, and in which a high-frequency signal propagates along a central axis perpendicular to the open top; at least two means for regulating a capacitive susceptance which are provided along a line having a predetermined angle to the axis line of the waveguide at a predetermined position on a wide face of the waveguide and are respectively disposed at an interval of one eighth of a guide wavelength .lambda.g in the direction along the axis line; and at least two step portions for stepwise narrowing the width between two internal sidewalls of the waveguide, with a distance of one eighth of the guide wavelength along the direction of the axis line separating the steps; and a tapered ridge rising from one wider internal face to a predetermined height as it progresses away from the open end, with a flat portion extending from the height of the taper to the closed end of the waveguide, to which the center conductor of a coaxial line is connected.

Dependencies are inferred from the claim text.