Coaxial to waveguide transducer including an L shape waveguide having an obliquely arranged conductor and method of forming the same

Patent metadata

Field	Value
Publication number	US-11114735-B2
Application number	US-201816631522-A
Country	US
Kind code	B2
Filing date	Jun 1, 2018
Priority date	Jul 20, 2017
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

A coaxial waveguide transducer includes: a waveguide having a substantially L shape formed of a first waveguide part and a second waveguide part arranged substantially orthogonal to each other; a stepwise step bend part formed in an outer corner part of an L-shaped bent part of the waveguide; a first conductor and a second conductor arranged in respective inner side walls of the waveguide in such a way that they are extended in a direction in which a central conductor of the coaxial line is extended and are positioned on a plane the same as that where the central conductor is provided; and a third conductor having one end connected to the central conductor and another end connected to one of the first conductor and the second conductor, the third conductor being arranged obliquely with respect to the direction in which the central conductor is extended.

First claim

The invention claimed is:

1. A coaxial waveguide transducer comprising:
a waveguide having a substantially L shape formed of a first waveguide part and a second waveguide part arranged substantially orthogonal to each other, the waveguide having one end which is on a side of the first waveguide part to which a coaxial line is connected;
a stepwise step bend part formed in an outer corner part of an L-shaped bent part of the waveguide;
a first conductor and a second conductor arranged along respective inner side walls of the first waveguide part in such a way that the first conductor and the second conductor are extended in a direction in which a central conductor of the coaxial line is extended and are positioned on a plane that is the same as a plane where the central conductor is provided; and
a third conductor having one end connected to the central conductor and another end connected to one of the first conductor and the second conductor, the third conductor being arranged obliquely with respect to the direction in which the central conductor is extended.

2. The coaxial waveguide transducer according to claim 1 , wherein the first conductor and the second conductor are extended to the L-shaped bent part of the waveguide.

3. The coaxial waveguide transducer according to claim 1 , further comprising a fourth conductor that is projected from one end of the third conductor toward the other one of the first conductor and the second conductor and is arranged in such a way that a gap is formed between the fourth conductor and the other one of the first conductor and the second conductor.

4. The coaxial waveguide transducer according to claim 1 , wherein the central conductor of the coaxial line, the first conductor, the second conductor, and the third conductor are plate-like conductive plates positioned on the plane.

5. The coaxial waveguide transducer according to claim 4 , wherein
the waveguide is configured to be divided into two members on the plane and to hold the plate-like conductive plate by the two members, and
the central conductor of the coaxial line, the first conductor, the second conductor, and the third conductor are integrally formed in the conductive plate.

6. A method of forming a coaxial waveguide transducer, the method comprising:
providing a waveguide having a substantially L shape formed of a first waveguide part and a second waveguide part arranged substantially orthogonal to each other, the waveguide having one end which is on a side of the first waveguide part to which a coaxial line is connected;
forming a stepwise step bend part in an outer corner part of an L-shaped bent part of the waveguide;
arranging a first conductor and a second conductor along respective inner side walls of the waveguide in such a way that the first conductor and the second conductor are extended in the direction in which a central conductor of the coaxial line is extended and are positioned on a plane that is the same as a plane where the central conductor is provided; and
arranging a third conductor in such a way that one end is connected to the central conductor and another end is connected to one of the first conductor and the second conductor, and that the third conductor is extended obliquely with respect to the direction in which the central conductor is extended.

Assignees

• Nec Corp

Inventors

• Miyamoto Takahiro
• Shiroyama Norihisa

Classifications

• H01P1/02 Primary

  Bends; Corners; Twists · CPC title

• H01P3/06

  Coaxial lines · CPC title

• H01P1/022

  in waveguides of polygonal cross-section (H01P1/065 takes precedence) · CPC title

• H01P5/103 Primary

  Hollow-waveguide/coaxial-line transitions · CPC title

• H01P11/005

  Manufacturing coaxial lines · CPC title