Wave transmission lines and networks – Coupling networks – Balanced to unbalanced circuits
Patent
1995-11-21
1998-01-13
Lee, Benny T.
Wave transmission lines and networks
Coupling networks
Balanced to unbalanced circuits
333 33, H01P 5103
Patent
active
057084017
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.
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Ohm-sha, "Microwave Circuit", Oct. 31, 1958, pp. 224-225.
Von G. von Dall'Armi, "Brietbandiger und hochbelastbarer Ubergang zwischen einem Hohlleiter und einer Koaxialleitung", Frequenz, vol. 20, No. 8, Aug. 1966, pp. 270-272.
Lee Benny T.
NEC Corporation
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