A rib-type polarizer structure

Abstract

The application relates to the technical field of phased array device structure design, and particularly discloses a rib type polarizer structure. The polarizer structure comprises fiber cloths, support ribs, insulating fastening screws, an upper mounting frame, a lower mounting frame and a metal frame. The five fiber cloths are stacked in an arc shape on the upper and lower mounting frames, the support ribs are arranged in the middle of the five fiber cloths, and the five fiber cloths, the support ribs, the upper mounting frame and the lower mounting frame are integrated by the insulating fastening screws. The support ribs form multiple spaced channels between the fiber cloths, the channels can form air ducts, cold air is introduced into the air ducts by other devices, and the fiber cloths and the support ribs are cooled. The technical scheme in the application solves the heat resistance problem of the polarizer by using a novel structure, and provides a solution for reliable application of the arc-shaped polarizer during high-power antenna transmission.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of phased array equipment, in particular to a rib type polarizer structure. BACKGROUND

[0002] The polarizer is a device for controlling the polarization direction of the antenna, which is used to select the polarization form consistent with the required signal and suppress other forms of polarized waves to obtain polarization matching and achieve the best signal reception. Generally, the antenna polarizer and the antenna cover are installed in sequence, and the polarizer is located at a certain position between the antenna end face and the antenna cover.

[0003] The common polarizer device at present mainly includes fiber cloth, honeycomb board or wave-transparent foam and polarizer structural parts. The fiber cloth is the main part of the polarizer. According to the polarization requirements, the electromagnetic waves of the antenna end face will be rotated by several layers. The honeycomb board is arranged between the layers of fiber cloth as a support and filling material. The polarizer structural parts are used to support the fiber cloth and fix with the antenna end face.

[0004] However, the common polarizer device at present has the following problems, which are embodied in the following aspects:

[0005] 1. The fiber cloth in the polarizer device is a necessary component of the polarizer, and the honeycomb board or the foam serves as a support. The ignition point of the paper honeycomb board is about 150℃, and the ignition point of the fiber cloth is about 350℃. When the transmitter power is large, the honeycomb board material will self-ignite because it cannot withstand high temperature.

[0006] 2. The ignition point of the wave-transparent foam is higher than that of the paper honeycomb board, about 300℃. However, the foam is generally shaped as a plate material with different thicknesses. Some antenna end faces are arc-shaped, and the polarizer also needs to be made as an arc-shaped end face. If the wave-transparent foam material is used for shaping, a mold needs to be re-made according to the shape of the polarizer for customized production, which has high cost, long cycle and no universality. SUMMARY

[0007] The present application provides a rib type polarizer structure, which can be used to solve the technical problems of poor temperature resistance and small power resistance of the polarizer.

[0008] The present application provides a rib type polarizer structure, which comprises:

[0009] The polarizer structure comprises fiber cloth, support ribs, an upper mounting frame, a lower mounting frame, a metal frame and insulating fastening screws. The fiber cloth is stacked in five layers in an arc shape between the upper mounting frame and the lower mounting frame. The support ribs are placed in the middle of the five layers of fiber cloth. The five layers of fiber cloth, the support ribs, the upper mounting frame and the lower mounting frame are fixed as a whole by the insulating fastening screws. The support ribs form a plurality of spaced channels between the fiber cloths, and the channels are used to form air ducts.

[0010] Further, the material of the support ribs is PMI foam material, the positions between the support ribs are adjusted as needed, the support ribs are preliminarily connected with the fiber cloth in a gluing manner, and 25 support ribs are arranged for supporting each layer of fiber cloth.

[0011] Further, the support ribs include first support ribs and second support ribs; the first support ribs have two mounting holes at the upper and lower positions, the second support ribs have no mounting hole, there are 5 first support ribs in each layer, and there are 16 second support ribs in each layer.

[0012] The same number of second support ribs are distributed at equal intervals between every two first support ribs; the intervals of the support ribs between different layers are different; the higher the layer is, the larger the interval is.

[0013] Further, the upper mounting frame and the lower mounting frame are made of polytetrafluoroethylene material, a reinforcing rib is left in the middle, one side is processed into an arc shape and has mounting holes for insulating and fastening screws of the support ribs, and the other side is processed into a plane and has mounting holes for the metal frame.

[0014] Further, the metal frame is made of aluminum alloy material, the metal frame includes an upper cross beam, a lower cross beam, a left vertical beam and a right vertical beam, and the parts are connected by screws; one side of the metal frame is connected with the upper mounting frame and the lower mounting frame, and the other side is connected with the end face of the array antenna.

[0015] The present application has the following advantages compared with other polarization conversion schemes:

[0016] 1. In the present application, the wave-transparent foam material is used to replace the commonly used paper honeycomb plate material, so that the ignition point of the polarizer as a whole is increased to about 300℃, and the power resistance of the polarizer is improved;

[0017] 2. In the present application, the rib-shaped wave-transparent foam material is used, avoiding the use of arc-shaped foam material, thereby avoiding the problems of difficult processing and high cost of arc-shaped foam plates;

[0018] 3. The gap between the ribs and the fiber cloth in the present application can form an air duct, which is used to cool the fiber cloth and the ribs in the polarizer. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The polarization device assembly diagram provided for the embodiment of the present application;

[0020] Figure 2 The first layer of fiber cloth and rib combination diagram provided for the embodiment of the present application;

[0021] Figure 3 The upper mounting frame diagram provided for the embodiment of the present application;

[0022] Figure 4 The metal frame diagram provided for the embodiments of the present application. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0024] The embodiments of the present application will be described in detail below with reference to the drawings.

[0025] The polizer structure in the present application comprises fiber cloth 1, support rib 2, upper mounting frame 3, lower mounting frame 4, metal frame 5, and insulating fastening screw 6; wherein the fiber cloth 1 has 5 layers, is placed in an arc shape between the upper mounting frame 3 and the lower mounting frame 4 in turn, the support rib 2 is placed in the middle of the 5 layers of fiber cloth 1, and the 5 layers of fiber cloth 1, the support rib 2, the upper mounting frame 3 and the lower mounting frame 4 are fixed as a whole through the insulating fastening screw 6. The support rib forms a plurality of spaced channels between the fiber cloths 1, and the channels are used to form air ducts, and cold air is introduced into the air ducts through other devices to cool the fiber cloth 1 and the support rib 2.

[0026] The material of the support rib 2 in the present application is PMI foam material, the positions between the support ribs 2 are adjusted according to needs, and after the relative position sizes are calculated, the support rib 2 is preliminarily connected with the fiber cloth 1 in a glue bonding manner, and 25 support ribs 2 are arranged in each layer of fiber cloth 1. The support rib is divided into two types, i.e. first support rib 2-1 and second support rib 2-2, the length of the support rib is 290mm, the width is 10mm, and the thickness is 5mm.

[0027] The support rib 2 in the present application comprises first support rib 2-1 and second support rib 2-2, the first support rib 2-1 has two mounting holes at the top and bottom, the second support rib 2-2 has no mounting hole, there are 5 first support ribs 2-1 in each layer, and there are 16 second support ribs 2-2 in each layer, and the same number of second support ribs 2-2 are distributed at equal intervals between every two first support ribs 2-1. The intervals of the support ribs between different layers are different; the higher the layer is, the larger the interval is. The intervals of the first support rib 2-1 and the second support rib 2-2 are different in each layer, and in the example, the interval of the first support rib 2-1 and the second support rib 2-2 in the first layer of fiber cloth is 23.2mm, the interval in the second layer is 23.6mm, the interval in the third layer is 23.8mm, and the interval in the fourth layer is 24.2mm.

[0028] The upper mounting frame 3 and the lower mounting frame 4 in the present application are both made of polytetrafluoroethylene material, have reinforcing ribs in the middle, are processed into an arc shape on one side, have mounting holes for the insulating fastening screw 6 of the support rib, and are processed into a plane on the other side and have mounting holes for the metal frame 5.

[0029] The metal frame 5 in the application is made of aluminum alloy material, and includes an upper cross beam 5-1, a lower cross beam 5-2, a left vertical beam 5-3 and a right vertical beam 5-4, which are connected by screws. One side of the metal frame 5 is connected with the upper mounting frame 3 and the lower mounting frame 4, and the other side is connected with the end face of the array antenna.

[0030] The above-described embodiments of the application are not intended to limit the scope of the application.

Claims

1. A rib-type polarizer structure, characterized in that: The rib-type polarizer structure includes: The polarizer structure includes fiber cloth (1), support ribs (2), an upper mounting frame (3), a lower mounting frame (4), a metal frame (5), and insulating fastening screws (6); wherein the fiber cloth (1) has a total of 5 layers, which are stacked in an arc shape and placed between the upper mounting frame (3) and the lower mounting frame (4); the support ribs (2) are placed between the 5 layers of fiber cloth 1, and the 5 layers of fiber cloth (1), the support ribs (2), the upper mounting frame (3) and the lower mounting frame (4) are fixed into a whole by insulating fastening screws (6); a plurality of spaced channels are formed between the fiber cloths (1) by the support ribs, and the channels are used to form air ducts; The material of the supporting rib (2) is PMI foam material; The supporting ribs (2) include a first supporting rib (2-1) and a second supporting rib (2-2); the first supporting rib (2-1) has two mounting holes at the top and bottom, and the second supporting rib (2-2) has no mounting holes; each layer of the first supporting ribs (2-1) has five ribs, and each layer of the second supporting ribs (2-2) has sixteen ribs; The same number of second supporting ribs (2-2) are distributed at equal intervals between every two first supporting ribs (2-1); the spacing between the supporting ribs is different between different layers; the higher the number of layers, the larger the spacing.

2. The rib-type polarizer structure according to claim 1, characterized in that: The supporting ribs (2) and the fiber cloth (1) are preliminarily connected by gluing.

3. The rib-type polarizer structure according to claim 1, characterized in that: The upper mounting frame (3) and the lower mounting frame (4) are both made of polytetrafluoroethylene material, with a hollow center and a reinforcing rib. One side is processed into an arc shape and has a mounting hole for the insulating fastening screw (6) with the support rib, and the other side is processed into a flat surface and has a mounting hole for the metal frame (5).

4. The rib-type polarizer structure according to claim 1, characterized in that: The metal frame (5) is made of aluminum alloy. The metal frame includes an upper crossbeam (5-1), a lower crossbeam (5-2), a left vertical beam (5-3) and a right vertical beam (5-4). The parts are connected by screws. One side of the metal frame (5) is connected to the upper mounting frame (3) and the lower mounting frame (4), and the other side is connected to the end face of the array antenna.

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