WO2013097739A1

WO2013097739A1 - Polarization device for microwave outdoor transmission system

Info

Publication number: WO2013097739A1
Application number: PCT/CN2012/087617
Authority: WO
Inventors: 赵青; 侯晓松; 葛鹏消; 田涛
Original assignee: 华为技术有限公司
Priority date: 2011-12-28
Filing date: 2012-12-27
Publication date: 2013-07-04
Also published as: EP2782191A4; EP2782191B1; EP2782191A1

Abstract

The embodiments of the present invention relate to a polarization device for a microwave outdoor transmission system. A polarization device for a microwave outdoor transmission system. The microwave outdoor transmission system comprises an antenna and an outdoor active device. The polarization device comprises a first polarization component which is detachably fastened on the outdoor active device so that the direction of a waveguide of the first polarization component is consistent with that of a waveguide of the outdoor active device, and a second polarization component which is detachably fastened on the first polarization component so as to allow the adjustment of an included angle between a waveguide of the second polarization component and the waveguide of the first polarization component through the rotation of the second polarization component relative to the first polarization component. The embodiments of the present invention can achieve convenient and quick switching between horizontal polarization and vertical polarization using a simple structure. Moreover, the polarization device can be compatible with the existing antenna system to reform the existing antenna, thereby saving the costs for replacing the existing antenna.

Description

Polarization device for microwave outdoor transmission system

This application claims the Chinese patent application filed on December 28, 2011, with the application number 201110448741.2, the invention name is "Polarization Equipment for Microwave Outdoor Transmission System" and submitted on December 28, 2011. The application number is The priority of the Chinese patent application is hereby incorporated by reference. Technical field

Embodiments of the present invention relate to the field of microwave communications and, more particularly, to a polarization apparatus for a microwave outdoor transmission system. Background technique

In the existing microwave communication system, in order to fully utilize the spectrum resources and reduce the interference between the microwave transmission signals, the microwave outdoor transmission system transmits signals in both vertical polarization and horizontal polarization. For this reason, the polarization mode of outdoor active devices of the microwave outdoor transmission system needs to be compatible with both horizontal polarization and vertical polarization.

For example, a polarization scheme that supports two polarization modes is implemented using two polarization components, one polarization component supporting horizontal polarization and the other polarization component supporting vertical polarization by replacing the two components To achieve switching between the two polarization modes. In this polarization scheme, the input end of the polarizing element is the horizontal polarization direction, and the electric field direction of the output end is horizontal polarization or vertical polarization. When the two polarized components are used in practice, one of the polarized components is assembled in the antenna system and the other polarized component is stored in the accessory package. In field operation, the risk of loss of polarized parts may occur. Moreover, changing the polarization mode requires field replacement of the polarized components, and the operation is complicated.

For example, another polarization scheme that supports two polarization modes is implemented using a special dedicated polarization component. In this scheme, the electric field at the input of the polarized component is 45 degrees, and the direction of the electric field at the output is horizontal or vertical. When using this scheme, it is necessary to install the special dedicated polarization component on the antenna end. Due to the particularity of the polarized component, mounting the polarized component requires replacement of the entire antenna end. However, in the microwave communication system, the antenna end is not easy to replace and the replacement cost is huge, so the use of this scheme cannot be compatible with the existing antenna end.

Therefore, it is necessary to provide a polarization device capable of supporting two polarization modes, which can be conveniently used in two types. Switch between polarization modes and be compatible with existing antennas. Summary of the invention

Embodiments of the present invention provide a polarization device for a microwave outdoor transmission system.

In one aspect, a polarization device for a microwave outdoor transmission system is provided, the microwave outdoor transmission system including an antenna and an outdoor active device, the polarization device comprising:

a first polarization component detachably fastened to the outdoor active device such that a waveguide of the first polarization component is in a direction consistent with a waveguide of the outdoor active device; a second polarizing member detachably fastened to the first polarizing member to allow adjustment by rotation of the second polarizing member relative to the first polarizing member An angle between the waveguide of the second polarization component and the waveguide of the first polarization component.

In another aspect, a microwave outdoor transmission unit is provided, the microwave outdoor transmission unit including the polarization device of the embodiment of the present invention.

In another aspect, a communication system is provided, the communication system comprising a microwave outdoor transmission unit in accordance with an embodiment of the present invention.

The embodiment of the present invention can realize convenient and rapid switching between horizontal polarization and vertical polarization with a simple structure, and the polarization device can be compatible with the existing antenna, thereby saving the cost of replacing the existing antenna. DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are only some of the present invention. For the embodiments, those skilled in the art can obtain other drawings according to the drawings without any creative work.

1 is an assembled view of a polarization device in accordance with an embodiment of the present invention;

2 is a perspective view of a first polarization component of a polarization device in accordance with an embodiment of the present invention; FIG. 3 is a perspective view of a second polarization component of a polarization device in accordance with an embodiment of the present invention; A schematic diagram of the relative relationship of the waveguides of the components when the embodiment achieves horizontal polarization;

FIG. 5 is a diagram showing the relative relationship of waveguides of various components when vertical polarization is implemented according to an embodiment of the present invention. Intention

Figure 6 is a perspective view of a first polarization component of a polarization device in accordance with a preferred embodiment of the present invention; Figure 7 is a perspective view of a second polarization component of a polarization device in accordance with a preferred embodiment of the present invention; A perspective view of a seal ring of a polarizing device of a preferred embodiment of the invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

1 is an assembled view of a polarization device 10 for a microwave outdoor transmission system in accordance with an embodiment of the present invention. In general, the microwave outdoor transmission system includes an antenna (not shown) and an outdoor active device.

100. Outdoor active devices are typically microwave outdoor modules that include power, IF, RF (including microwave band) active transceiver links, duplexers, and associated structural components. In the embodiment of the present invention, for the horizontal polarization and the vertical polarization of the antenna, the waveguides of the outdoor active device 100 of the microwave outdoor transmission system are at an angle of 45 degrees to the waveguide of the antenna. As shown in FIG. 1, the polarization device 10 mainly includes a first polarization component 200 and a second polarization component 300. The first polarizing member 200 is detachably fastened to the outdoor active device 100 of the microwave outdoor transmission system such that the waveguide of the first polarizing member 200 coincides with the waveguide holding direction of the outdoor active device 100. The second polarization member 300 is detachably fastened to the first polarization member 200 to allow the waveguide of the first polarization member 200 to be adjusted by the rotation of the second polarization member 300 relative to the first polarization member 200 The angle between the waveguides of the polarized component 300. The polarisation device 10 is specifically described below.

Those skilled in the art understand that the waveguides on the antenna and the outdoor active device can generally be arranged as rectangular waveguides to facilitate the transmission of radio waves. The waveguides on the first polarization component 200 and the second polarization component 300 of the polarization device 10 according to embodiments of the present invention are also preferably arranged as rectangular waveguide ports, the shape and size of which are on the antenna and on the outdoor active device 100. The waveguide corresponds.

FIG. 2 shows a perspective view of a first polarization component 200 in accordance with an embodiment of the present invention. Shown in FIG. 2 is a preferred embodiment of the first polarization component 200. The first polarizing member 200 is substantially a cylindrical tube 210 having a closed end 220 and an open end 230. Therefore, the first polarization member 200 is substantially cup-shaped. The waveguide 240 of the first polarization component 200 is disposed at the closed end 220 of the cylindrical tube 210 The center of the cup is placed at the center of the bottom of the cup. The waveguide 240 may be provided as a rectangular waveguide having a shape corresponding to a waveguide on the outdoor active device 100. The closed end 220 of the cylindrical tube 210 has a flange portion 250 through which a first polarization member 200 is fastened by fastener holes (not shown) on the flange portion 250 using fasteners (not shown) On the outdoor active device 100. Those skilled in the art will appreciate that there may be multiple fastener holes in the flange portion 250 herein, preferably evenly distributed around the perimeter of the flange portion 250. The fasteners that secure the first polarized component 200 to the outdoor active device may select a bolt. In this case, a corresponding threaded hole is provided in the outdoor active device to receive the fastener.

Figure 3 shows a perspective view of a second polarization component 300 in accordance with an embodiment of the present invention. Shown in Figure 3 is a preferred embodiment of the second polarization component 300. The second polarization member 300 is substantially a columnar body 310 having a first end surface 320 and a second end surface 330 (see FIG. 7). The outer diameter of the columnar body 310 substantially matches the columnar shape of the first polarization member 200 shown in FIG. The inner diameter of the tube 210 is such that the columnar body 310 can be inserted into the cylindrical tube 210 to realize the assembly of the first polarization member 200 and the second polarization member 300. When the first polarization member 200 is assembled with the second polarization member 300, the columnar shape The second end face 330 of the body 310 faces the inner side of the closed end 220 of the cylindrical tube 210. The waveguide 340 on the second polarizing member 300 is in the form of a rectangular waveguide opening through the first end face 320 and the second end face 330 of the columnar body 310. The waveguide 340 has a shape and a size corresponding to the waveguide 240 on the first polarization member 200. When the second polarization member 300 is coupled to the first polarization member 200, it can be opposite to the first The polarization component 200 rotates the second polarization component 300 to adjust the angle between the waveguide 340 of the second polarization component 300 and the waveguide 240 of the first polarization component 200 to achieve horizontal polarization and vertical polarization at the antenna. between The angle between the waveguide and the waveguide referred to herein refers to the angle between the longitudinal axes of the rectangles of the respective waveguides, which are the same below. The second polarization member 300 is disposed around the columnar body 310. The through fastener holes 350 are fastened to the first polarizing member 200 by fasteners. It will be understood by those skilled in the art that there may be a plurality of fastener holes 350 on the columnar body 310, preferably uniformly surrounding the columnar shape. The peripheral distribution of the body. The fastener that fastens the second polarizing member 300 to the first polarizing member 200 can select a bolt. In this case, the closed end 220 of the fastener 200 defines a corresponding threaded hole 290. (See Figure 2) to receive the fasteners.

The arrangement of horizontal polarization and vertical polarization using the first polarization member 200 and the second polarization member 300 will be described in detail below with reference to Figs. 4 and 5.

4 is a horizontal pole implemented on the antenna by using the first polarization component 200 and the second polarization component 300. The relative positional relationship of the waveguide ports of each component. For the sake of clarity, the figure is simplified, showing only the waveguides of the various components. 4 shows a top view in which the waveguides are stacked together when the antenna, the outdoor active device, the first polarization component 200, and the second polarization component 300 are mounted together, wherein the two-dot chain line indicates the horizontal pole The waveguide of the antenna, the one-dot chain line indicates the waveguide of the outdoor active device 100 and the waveguide 240 of the first polarization component 200, and the solid line indicates the waveguide 340 of the second polarization component 300. . For convenience of description, in FIG. 4, it is considered that when the horizontal polarization is performed, the waveguide of the antenna is located at 0 degrees, and the waveguide 240 of the first polarization component 200 and the waveguide of the outdoor active device are located at 45 degrees. That is, the angle between the waveguide and the antenna is 45 degrees. The waveguide 340 of the second polarization member 300 is located at an angle of 22.5 degrees, that is, an angle of 22.5 degrees with the waveguide 240 of the first polarization member 200. In such a configuration, horizontal polarization of the antenna is achieved.

Fig. 5 is a view showing the relative positional relationship of the waveguide ports of the respective members when the vertical poles are realized on the antenna by the first polarization member 200 and the second polarization member 300. Also, for the sake of clarity, the drawings are simplified, and only the waveguide ports of the respective components are shown. 5 shows a top view in which the waveguides are stacked together when the antenna, the outdoor active device, the first polarization component 200, and the second polarization component 300 are mounted together, wherein the two-dot chain line indicates the vertical pole The waveguide of the antenna, the one-dot chain line indicates the waveguide of the outdoor active device 100 and the waveguide 240 of the first polarization component 200, and the solid line indicates the waveguide 340 of the second polarization component 300. . For convenience of description, in FIG. 5, it is considered that when the horizontal polarization is performed, the orientation of the waveguide of the antenna is 90 degrees, and the orientation of the waveguide 240 of the first polarization member 200 and the waveguide of the outdoor active device 100 is 45 degrees. That is, the angle between both the waveguide 240 of the first polarization component 200 and the waveguide of the outdoor active device 100 and the waveguide of the antenna is 45 degrees. The waveguide 340 of the second polarization member 300 is located at 67.5 degrees, that is, at an angle of 22.5 degrees with the waveguide 240 of the first polarization member 200. Vertical polarization of the antenna is achieved in such a configuration.

As can be seen from Figures 4 and 5, the waveguide 240 of the first polarization component 200 is always mounted at an angle of 45 degrees, while the waveguide 340 of the second component 300 is at an angle of 22.5 degrees to the waveguide 240 of the first polarization component 200. , but the direction is different. If, in FIG. 4, the waveguide 340 of the second component 300 and the waveguide 240 of the first polarization component 200 are at an angle of -22.5 degrees, it can be considered that in FIG. 5, the waveguide 340 of the second component 300 and the first pole The angle of the waveguide 240 of the component 200 is 22.5 degrees. Therefore, by adjusting the angle of rotation of the second polarization member 300 with respect to the first polarization member 200, flexible switching between the horizontal polarization and the vertical polarization of the antenna can be achieved.

Of course, the invention is not limited to switching between horizontal and vertical polarization of the antenna. Skill It will be understood by those skilled in the art that the arbitrary polarization angle of the antenna can also be achieved by the relative rotation between the second polarization component 300 and the first polarization component 200.

Further improvements have been made to the commonly used horizontal and vertical polarizations in accordance with embodiments of the present invention. Figure 6 is a preferred configuration of a first polarization component 200 in accordance with an embodiment of the present invention. As shown in Fig. 6, the inner side of the closed end 220 of the cylindrical tube 210 of the first polarization member 200 includes an arcuate groove 260 extending in the circumferential direction of the columnar tube 210 with a span of 45 degrees. The curved recess 260 has a first end 262 and a second end 264 for mating with corresponding projections (described below) on the second polarizing member 300 to effect horizontal and vertical polarization of the antenna. Figure 7 is a preferred configuration of a second polarization component 300 in accordance with an embodiment of the present invention. As shown in Fig. 7, the second end face 330 of the columnar body 310 of the second polarizing member 300 includes a projection 340 provided at the peripheral edge. When the first polarizing member 200 and the second polarizing member 300 shown in Figs. 6 and 7 are engaged, the projection 340 fits in the arcuate recess 360. According to an embodiment of the invention, the position of the arcuate recess 260 on the closed end 220 can be selected, and/or the position of the projection 340 on the second end face 330 can be selected such that the projection 340 is located at the first of the curved recess 260. At terminal 262, horizontal polarization of the antenna is achieved, and when the protrusion 340 is at the second end 264 of the curved recess 260, vertical polarization of the antenna is achieved.

An arcuate groove 260 is disposed on the first polarizing member 200, and a protrusion 340 is formed on the second polarizing member 300 to cooperate with the arcuate groove 260, so that the second polarizing member 300 is adjusted relative to the first pole. The rotation of the component 200 can be accurately positioned, and the cooperation of the protrusions and the arcuate grooves can provide a foolproof function to prevent misalignment of the second polarization component 300 relative to the first polarization component.

Although not shown, the fastener hole 350 for fastening to the first polarization member 200 on the second polarization member 300 shown in FIG. 7 may be provided as an arcuate hole, the arc, according to an embodiment of the present invention. The span of the shaped aperture corresponds to the span of the curved recess 260. Thus, when adjusting the rotation angle of the second polarization member 300 with respect to the first polarization member 200, it is not necessary to take the second polarization member 300 out of the first polarization member 200, and only need to loosen the fastener and rotate the first After the polarized component 300 reaches the desired position, the fastener is tightened. This setting prevents accidental damage or loss of the second polarized part when the angle is adjusted. According to an embodiment of the invention, the number of arcuate holes is at least one in order to provide a more reliable fastening effect.

Those skilled in the art will appreciate that the span of the curved groove 260 is not limited to 45 degrees. Depending on the specific application requirements, larger or smaller spans can be chosen to achieve polarization at different angles. According to a preferred embodiment, the arcuate recess 260 has a span of at least 45 degrees. Tight on the second polarizing member 300 In embodiments where the firmware apertures 350 are arcuate apertures, the span of the arcuate apertures is correspondingly at least 45 degrees.

In accordance with an embodiment of the present invention, an annular groove 270 is disposed in communication with the cylindrical tube 210 around the waveguide 240 on the inner side of the closed end 220 of the first polarization member 200 shown in FIG. In actual use, a seal ring 280 (shown in FIG. 8) may be provided in the annular groove 270 such that the second polarizing member 300 is waterproofed by the seal ring 280 when mated with the first polarizing member 200. Sealing effect. Sealing ring 280 is available in silicone rubber to provide a watertight seal while maintaining electrical transmission.

According to an embodiment of the present invention, the first polarization member 200 and the second polarization member 300 may be made of an aluminum alloy material. In order to further increase the polarization efficiency, a metal such as gold or silver may be plated on the waveguide 240 of the first polarization member 200 and the waveguide 340 of the second polarization member 300.

The embodiment of the invention can realize convenient and rapid switching between horizontal polarization and vertical polarization by using a simple structure, and the polarization device can be compatible with the existing antenna system, thereby realizing transformation of the existing antenna, thereby saving The cost of replacing an existing antenna.

According to another aspect of the embodiments of the present invention, a microwave outdoor transmission unit is proposed, and the microwave outdoor transmission unit may include the above-described polarization device 10 for realizing microwave horizontal polarization and/or vertical polarization.

According to another aspect of an embodiment of the present invention, a communication system is provided, the communication system including the microwave outdoor transmission unit described above, wherein the microwave outdoor transmission unit utilizes a planning device 10 included therein to implement microwave horizontal polarization and/or Or vertical polarization.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

A polarization device for a microwave outdoor transmission system, the microwave outdoor transmission system comprising an antenna and an outdoor active device, wherein the polarization device comprises:

2. The polarization device of claim 1 wherein

The first polarizing member includes a cylindrical tube having a closed end and an open end, a waveguide of the first polarizing member is disposed at a center of the closed end of the cylindrical tube, and the cylindrical tube is closed The end has a flange portion, and the first polarizing member is fixed on the outdoor active device by a fastener hole on the flange portion by using a fastener;

The second polarization member includes a columnar body, a waveguide of the second polarization member is disposed at a center of the columnar body through the columnar body, and the second polarization member is disposed at a periphery of the columnar body A fastener hole is fastened to the first polarizing member.

3. The polarization device of claim 2, wherein

An inner side of the closed end of the cylindrical tube of the first polarizing member is provided with an arc-shaped IHJ groove concentric with the cylindrical tube;

a protrusion is disposed on one end surface of the second polarization component, and the protrusion of the second polarization component is used when the first polarization component and the second polarization component are matched Sliding in the arcuate groove of the first polarizing member to adjust an angle between a waveguide of the second polarizing member and a waveguide of the first polarizing member.

4. The polarization device of claim 3, wherein

a fastener hole on the columnar body of the second polarization member includes an arcuate hole concentric with the columnar body such that the protrusion of the second polarization member is at the first polarization When sliding in the arcuate groove of the component, the fastener for fastening the first polarizing member and the second polarizing member slides in the arcuate hole.

5. A polarization device according to claim 3 or 4, characterized in that

The arcuate groove of the first polarizing member has a span of at least 45 degrees.

6. A polarization device according to claim 4 or 5, characterized in that

The arcuate aperture of the second polarization component spans at least 45 degrees.

The polarization device according to any one of claims 4 to 6, wherein

The second polarizing member includes at least one of the arcuate holes.

The polarization device according to any one of claims 1 to 7, characterized in that

The polarization device further includes a seal ring disposed inside the closed end of the cylindrical tube of the first polarization member, located around the waveguide of the first polarization member, so as to be When the first polarization member is mated with the second polarization member, a seal is formed between the first polarization member and the second polarization member.

A microwave outdoor transmission unit, comprising the polarization device according to any one of claims 1 to 8.

A communication system, comprising the microwave outdoor transmission unit of claim 9.