Waveguide matching circuit having both capacitive susceptance regulating means and inductive materials
AssigneeNEC Corporation
InventorKeiichi Umezu
Life of this patent
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Abstract
A waveguide matching circuit in the form of a rectangular tube, open at both ends, and in which a high-frequency signal propagates along a central axis perpendicular to the open end; at least two screws 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 inductance rods narrowing the width between two internal sidewalls of the waveguide, disposed at the same interval as corresponding capacitive susceptance regulating screws.
Claims3
A waveguide matching circuit, comprising:
- a waveguide in the form of a rectangular tube having open ends, a central axis line perpendicular to the planes of the open ends, a pair of opposing internal wide faces, and a narrow pair of opposing internal sidewalls in which a high-frequency signal propagates, and in which means for regulating an impedance is provided;
- wherein said impedance regulating means comprises:
- at least two means for regulating a capacitive susceptance arranged along a line having a predetermined non-zero angle with respect to the central axis line of said waveguide at a predetermined position on at least one wide face of said waveguide and respectively disposed at an interval of one eighth of a guide wavelength .lambda.g in the direction along said central axis line;
- and
- at least two inductive materials which are disposed on at least one of said opposing internal sidewalls of said waveguide at the same interval as corresponding ones of said capacitive susceptance regulating means.
Dependencies are inferred from the claim text.