CN219246900U

CN219246900U - Ridge waveguide circulator with novel ridge moment conversion E-plane bending structure

Info

Publication number: CN219246900U
Application number: CN202320788609.4U
Authority: CN
Inventors: 杨政刚; 杨宋兵
Original assignee: Anhui Hexu Microwave Technology Co ltd
Current assignee: Anhui Hexu Microwave Technology Co ltd
Priority date: 2023-04-11
Filing date: 2023-04-11
Publication date: 2023-06-23
Anticipated expiration: 2033-04-11

Abstract

The utility model discloses a ridge waveguide circulator with a novel ridge moment conversion E-plane bending structure, which comprises a lower cavity and an upper cover plate, wherein a Y-shaped central spine, a coupling cylinder, a short road surface, a first screw and a second screw are arranged in a groove of the lower cavity; two ends of the lower cavity are also provided with two ridge waveguide outlets; the upper cover plate is fixed on the lower cavity, a rectangular waveguide port is formed in the center of the upper cover plate, and a short road surface with a certain distance extends out of the rectangular waveguide port at the part of the lower cavity. The novel impedance transformation structure can be beneficial to miniaturization of microwave devices and reduction of manufacturing cost.

Description

Ridge waveguide circulator with novel ridge moment conversion E-plane bending structure

Technical Field

The utility model belongs to the field of communication, and particularly relates to a ridge waveguide circulator with a novel ridge moment conversion E-plane bending structure.

Background

At present, the development of miniaturization and light weight of microwave communication equipment is a trend, and especially under the condition of compressing the external dimension of a device working in an X wave band, the contradiction of crowding the mechanical interface and the internal matching structure space is very remarkable.

The microwave transceiver unit ODU is currently mostly in a direct-locking structure, and passive components such as a diplexer and a circulator are installed between the active plate and the antenna component.

The small volume is realized in a common ridge waveguide mode, and the mechanical interface is connected with a common ridge port of the active plate, so that the feed to the active plate is convenient; and often a standard rectangular port is connected to the antenna element.

The ridge moment waveguide turning transition under the general condition needs a large space, but the requirement of miniaturization of equipment is not facilitated; in order to meet the severe thickness requirement for the framework of a new active platform suitable for microwave equipment manufacturers, the ridge moment conversion needs to be completed in the inner space of the cavity;

the E-plane waveguide turning impedance is large in difference and poor in matching in the limited space according to the conventional design, and the service efficiency is affected.

Therefore, we propose a ridge waveguide circulator with a novel ridge moment conversion E-face bending structure for solving the above problems.

Disclosure of Invention

Aiming at the problem that in the prior art, transition matching from a ridge waveguide of a ridge waveguide circulator to a rectangular waveguide port is difficult, the utility model provides the following technical scheme:

the ridge waveguide circulator with the novel ridge moment conversion E-plane bending structure comprises a lower cavity and an upper cover plate, wherein a Y-shaped central spine, a coupling cylinder, a short pavement, a first screw and a second screw are arranged in a groove of the lower cavity; two ends of the lower cavity are also provided with two ridge waveguide outlets;

the upper cover plate is fixed on the lower cavity, a rectangular waveguide port is formed in the center of the upper cover plate, and a short road surface with a certain distance extends out of the rectangular waveguide port at the part of the lower cavity.

The novel impedance transformation structure is beneficial to miniaturization of microwave devices and reduction in manufacturing.

As the optimization of the technical scheme, the assembly body is forbidden to appear in the area defining the waveguide flange, so that three screws I which are installed in a matching way are arranged on the upper cover plate, one screws I are arranged in a non-space way, and screws II are arranged on the back surface of the lower cavity.

As the optimization of the technical scheme, the cylindrical ferrite is arranged on the central spine, the cylindrical ferrite is arranged at the central position of the central spine in the middle, and the ferrite material is garnet gyromagnetic ferrite.

The loop rotation transmission is realized by generating magnetic polarization through an external magnetic field.

The beneficial effects of the utility model are as follows:

the novel impedance transformation structure is beneficial to miniaturization of microwave devices and reduces manufacturing cost.

Drawings

Fig. 1 shows a schematic diagram of a split three-dimensional structure according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a side view cross-sectional structure provided by an embodiment of the present utility model;

FIG. 3 is a schematic top view of a cross-sectional structure provided by an embodiment of the present utility model;

fig. 4 shows an effect band diagram for achieving an ideal purpose of microwave parameters provided by the embodiment of the utility model.

Legend description:

1. a lower cavity; 2. an upper cover plate; 3. a ridge waveguide outlet; 4. a rectangular waveguide port; 5. a central spine; 6. a cylindrical ferrite; 7. a coupling cylinder; 8. a short road surface; 9. a first screw; 10. a second screw; 11. a circulator ridge; 12. a waveguide ridge I; 13. waveguide ridge two.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments.

As shown in fig. 1, 2, 3 and 4, in the embodiment of the present utility model: the device comprises a lower cavity 1 and an upper cover plate 2, wherein a Y-shaped central spine 5, a coupling cylinder 7, a short pavement 8, a first screw 9 and a second screw 10 are arranged in a groove of the lower cavity 1; two ends of the lower cavity 1 are also provided with two ridge waveguide outlets 3;

the upper cover plate 2 is fixed on the lower cavity 1, a rectangular waveguide port 4 is arranged at the center of the upper cover plate 2, and a short-circuit surface 8 with a certain distance extends from the rectangular waveguide port 4 at the part of the lower cavity 1.

As shown in fig. 1, the area defining the waveguide flange is prohibited from generating an assembly body, so that three screws 9 which are installed in a matching way are arranged on the upper cover plate 2, one screws are arranged in a non-space way, and two screws 10 are arranged on the back surface of the lower cavity 1;

as shown in fig. 1, 2 and 3, a cylindrical ferrite 6 is installed on the central spine 5, the cylindrical ferrite 6 is centrally disposed in the central position of the central spine 5, and the ferrite is garnet gyromagnetic ferrite.

Working principle: the ridge waveguide size is determined to meet the working frequency band of the circulator, the sizes of the waveguide ridge I12 and the waveguide ridge II 13 are completely consistent, the circulator ridge 11 has different sizes according to matching requirements, and a coupling cylinder 7 is arranged to match the screw I9 and the screw II 10;

extending the part of the rectangular waveguide port 4 on the lower cavity 1 beyond the vertical waveguide by a distance along the horizontal direction to a short-circuit surface 8; a coupling cylinder 7 is arranged at a specific position inside the rectangular waveguide port 4, and the coupling cylinder 7 is connected with the circulator ridge 11; the position and the geometric dimension of the coupling cylinder 7 and the distance between the short road surfaces 8 are all important factors for matching the echo; matching the depth of the first screw 9 and the second screw 10 into the cavity is an important condition for the final matching performance to be optimal; from electromagnetic field analysis, the structure is characterized in that the standard rectangular waveguide and the ridge waveguide are subjected to matching conversion through the coupling cylinder 7, the coupling capacity of the coupling cylinder 7 is enhanced after the coupling cylinder is reflected by the short pavement 8, and the obtained bandwidth meets engineering application;

the electromagnetic field simulation of the structure uses three-dimensional electromagnetic field simulation software which is common in the industry, and the testing equipment of the sample uses Agilent N54432A instrument; the actual manufacturing requires adding part of auxiliary materials, such as epoxy resin water for bonding ferrite and magnetic steel for providing a magnetic field; the lower cavity and the upper cover plate can be fixedly connected by adopting screws, and can be welded by using a low Wen Xigao reflow oven; the test result of the final sample is highly consistent with the simulation result.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting.

Claims

1. Ridge waveguide circulator with novel ridge moment conversion E-plane bending structure, comprising a lower cavity (1) and an upper cover plate (2), and being characterized in that: a Y-shaped central spine (5), a coupling cylinder (7), a short-circuit surface (8), a first screw (9) and a second screw (10) are arranged in the groove of the lower cavity (1); two ends of the lower cavity (1) are also provided with two ridge waveguide outlets (3);

the upper cover plate (2) is fixed on the lower cavity (1), a rectangular waveguide port (4) is formed in the center of the upper cover plate (2), and a short-circuit surface (8) with a certain distance extends from the rectangular waveguide port (4) at the lower cavity (1).

2. The ridge waveguide circulator with the novel ridge moment conversion E-face bending structure according to claim 1, wherein an assembly is forbidden in the area defining the waveguide flange, so that three screws I (9) which are installed in a matching way are arranged on the upper cover plate (2), one screw I is arranged without space, and a screw II (10) is arranged on the back surface of the lower cavity (1).

3. The ridge waveguide circulator with the novel ridge moment conversion E-plane bending structure according to claim 1, wherein a cylindrical ferrite (6) is arranged on the central spine (5), the cylindrical ferrite (6) is centrally arranged at the central position of the central spine (5), and the ferrite material is garnet gyromagnetic ferrite.