T-shaped port planar integrated waveguide circulator

Abstract

The invention discloses a T-shaped port planar integrated waveguide circulator, belonging to the technical field of microwave and millimeter wave devices. The circulator is manufactured by integrally processing a medium material with deposited metal layers on two faces, and comprises a regularly-triangular medium cavity, a three-segment planar integrated waveguide and a center junction gyromagnetic ferrite, wherein the three-segment planar integrated waveguide comprises a two sections of arc lines and a section of linear planar integrated waveguide; the three ports of the circulator have T-shaped structures; and the center junction gyromagnetic ferrite is positioned at the center of the regularly-triangular medium cavity. The circulator provided by the invention has a T-shaped port structure, and a larger chip area for increasing the transition connection between a micro-strip and the integrated waveguide is not required to be sacrificed, so that the miniaturization and integration level of the entire device are further improved; and simultaneously, the circulator has the characteristics of high isolating performance, low insertion loss and small port standing wave, and can meet the application requirements of a miniaturized and integrated microwave / millimeter wave communication system.

Description

technical field

[0001] The invention belongs to the technical field of microwave and millimeter wave devices, and relates to a planar integrated waveguide (SIW) circulator. Background technique

[0002] A circulator is a multi-port device that transmits the incident electromagnetic waves that enter any of its ports into the next port in the direction determined by the static bias magnetic field. Because the circulator has a unidirectional (clockwise or counterclockwise) transmission characteristic, that is, the input signal of a port can only be output from the next port in a clockwise or counterclockwise direction, while other ports have no output signal, so the circulator usually also called an isolator.

[0003] The unidirectional transmission characteristics of the circulator are due to the use of ferrite gyromagnetic materials, which produce gyromagnetic characteristics (also known as tensor permeability characteristics) under the combined action of an external high-fr...

Examples

specific Embodiment approach 1

[0026] A T-port planar integrated waveguide circulator, such as figure 2 As shown in the figure, it has a mirror-symmetric structure; it includes an equilateral triangular dielectric cavity, three-segment planar integrated waveguide, a central junction gyromagnetic ferrite and a bias magnetized ferrite; the three-segment planar integrated waveguide includes two arc-shaped The planar integrated waveguide and a segment of straight planar integrated waveguide, the three inner ports of the three segments of the planar integrated waveguide are respectively connected with the three sides of the equilateral triangle dielectric cavity, and the other three outer ports are used as the input or output ports of the circulator; The three external ports of the segmented planar integrated waveguide form a T-shaped port structure, that is, the external ports of the two arc-shaped planar integrated waveguides are parallel to each other and perpendicular to the external ports of the straight-sh...

specific Embodiment approach 2

[0029] A T-port planar integrated waveguide circulator, such as figure 2As shown in the figure, it has a mirror-symmetric structure; it includes an equilateral triangular dielectric cavity, three-segment planar integrated waveguide, a central junction gyromagnetic ferrite and a bias magnetized ferrite; the three-segment planar integrated waveguide includes two arc-shaped The planar integrated waveguide and a segment of straight planar integrated waveguide, the three inner ports of the three segments of the planar integrated waveguide are respectively connected with the three sides of the equilateral triangle dielectric cavity, and the other three outer ports are used as the input or output ports of the circulator; The three external ports of the segmented planar integrated waveguide form a T-shaped port structure, that is, the external ports of the two arc-shaped planar integrated waveguides are parallel to each other and perpendicular to the external ports of the straight-sha...

specific Embodiment approach 3

[0033] A T-port planar integrated waveguide circulator, such as figure 2 As shown in the figure, it has a mirror-symmetric structure; it includes an equilateral triangular dielectric cavity, three-segment planar integrated waveguide, a central junction gyromagnetic ferrite and a bias magnetized ferrite; the three-segment planar integrated waveguide includes two arc-shaped The planar integrated waveguide and a segment of straight planar integrated waveguide, the three inner ports of the three segments of the planar integrated waveguide are respectively connected with the three sides of the equilateral triangle dielectric cavity, and the other three outer ports are used as the input or output ports of the circulator; The three external ports of the segmented planar integrated waveguide form a T-shaped port structure, that is, the external ports of the two arc-shaped planar integrated waveguides are parallel to each other and perpendicular to the external ports of the straight-sh...

technical field

[0001] The invention belongs to the technical field of microwave and millimeter wave devices, and relates to a planar integrated waveguide (SIW) circulator. Background technique

[0002] A circulator is a multi-port device that transmits the incident electromagnetic waves that enter any of its ports into the next port in the direction determined by the static bias magnetic field. Because the circulator has a unidirectional (clockwise or counterclockwise) transmission characteristic, that is, the input signal of a port can only be output from the next port in a clockwise or counterclockwise direction, while other ports have no output signal, so the circulator usually also called an isolator.

[0003] The unidirectional transmission characteristics of the circulator are due to the use of ferrite gyromagnetic materials, which produce gyromagnetic characteristics (also known as tensor permeability characteristics) under the combined action of an external high-fr...

Examples

specific Embodiment approach 1

[0026] A T-port planar integrated waveguide circulator, such as figure 2 As shown in the figure, it has a mirror-symmetric structure; it includes an equilateral triangular dielectric cavity, three-segment planar integrated waveguide, a central junction gyromagnetic ferrite and a bias magnetized ferrite; the three-segment planar integrated waveguide includes two arc-shaped The planar integrated waveguide and a segment of straight planar integrated waveguide, the three inner ports of the three segments of the planar integrated waveguide are respectively connected with the three sides of the equilateral triangle dielectric cavity, and the other three outer ports are used as the input or output ports of the circulator; The three external ports of the segmented planar integrated waveguide form a T-shaped port structure, that is, the external ports of the two arc-shaped planar integrated waveguides are parallel to each other and perpendicular to the external ports of the straight-sh...

specific Embodiment approach 2

[0029] A T-port planar integrated waveguide circulator, such as figure 2As shown in the figure, it has a mirror-symmetric structure; it includes an equilateral triangular dielectric cavity, three-segment planar integrated waveguide, a central junction gyromagnetic ferrite and a bias magnetized ferrite; the three-segment planar integrated waveguide includes two arc-shaped The planar integrated waveguide and a segment of straight planar integrated waveguide, the three inner ports of the three segments of the planar integrated waveguide are respectively connected with the three sides of the equilateral triangle dielectric cavity, and the other three outer ports are used as the input or output ports of the circulator; The three external ports of the segmented planar integrated waveguide form a T-shaped port structure, that is, the external ports of the two arc-shaped planar integrated waveguides are parallel to each other and perpendicular to the external ports of the straight-sha...

specific Embodiment approach 3

[0033] A T-port planar integrated waveguide circulator, such as figure 2 As shown in the figure, it has a mirror-symmetric structure; it includes an equilateral triangular dielectric cavity, three-segment planar integrated waveguide, a central junction gyromagnetic ferrite and a bias magnetized ferrite; the three-segment planar integrated waveguide includes two arc-shaped The planar integrated waveguide and a segment of straight planar integrated waveguide, the three inner ports of the three segments of the planar integrated waveguide are respectively connected with the three sides of the equilateral triangle dielectric cavity, and the other three outer ports are used as the input or output ports of the circulator; The three external ports of the segmented planar integrated waveguide form a T-shaped port structure, that is, the external ports of the two arc-shaped planar integrated waveguides are parallel to each other and perpendicular to the external ports of the straight-sh...

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