Rib type polarizer structure

Abstract

The invention relates to the technical field of phased array equipment structure design, and particularly discloses a rib type polarizer structure. The polarizer structure comprises fiber cloth, supporting ribs, insulating fastening screws, an upper mounting frame, a lower mounting frame and a metal frame. Wherein the five layers of fiber cloth are sequentially stacked and placed on the upper installation frame and the lower installation frame in an arc shape, the supporting ribs are placed in the middle of the five layers of fiber cloth, and the five layers of fiber cloth, the supporting ribs, the upper installation frame and the lower installation frame are installed into a whole through the insulation fastening screws. A plurality of spaced channels are formed between the fiber cloth through the supporting ribs, the channels can form air channels, and cold air is introduced into the air channels through other devices to cool the fiber cloth and the supporting ribs. According to the technical scheme provided by the invention, the heat resistance problem of the polarizer is solved by using a novel structural form, and a solution is provided for reliable application of the arc-shaped polarizer during transmission of a high-power antenna.

Description

Technical Field

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

[0002] The polarizer is a device that controls the polarization direction of the antenna. It 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 optimal signal reception. Usually, the antenna polarizer and the radome are installed in sequence, and the polarizer is located at a certain position between the antenna end face and the radome.

[0003] Currently common polarizer devices mainly include fiber cloth, honeycomb panels or wave-transparent foam and polarizer structural parts. The fiber cloth, as the main part of the polarizer, will rotate the electromagnetic waves at the antenna end face by a certain angle in several layers according to the polarization requirements. The honeycomb panel is arranged between the layers of fiber cloth as a supporting and filling material. The polarizer structural parts are used to support the fiber cloth and fix it to the antenna end face.

[0004] However, the common polarizer devices currently have problems in the following aspects, which are specifically reflected in:

[0005] 1 The fiber cloth in the polarizer device is a necessary component of the polarizer, and the honeycomb panel or foam plays a supporting role. The ignition point of the paper honeycomb panel is around 150°C, and the ignition point of the fiber cloth is around 350°C. When the transmitter power is large, the honeycomb panel material will spontaneously combust because it cannot withstand the high temperature.

[0006] 2 The ignition point of wave-transmitting foam is higher than that of paper honeycomb board, which is about 300°C. However, foam is generally formed into plate-like materials with different thicknesses. Some antenna end faces are curved, and the polarizer also needs to be made into a curved end face. If wave-transmitting foam material is used for molding, the mold needs to be remade according to the shape of the polarizer, and customized production has high cost and long cycle, and is not universal. Summary of the invention

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

[0008] The present application provides a rib-type polarizer structure, the rib-type polarizer comprising:

[0009] The polarizer structure includes fiber cloth, supporting ribs, an upper mounting frame, a lower mounting frame, a metal frame, and insulating fastening screws; the fiber cloth has a total of 5 layers, which are stacked in an arc shape between the upper mounting frame and the lower mounting frame, and the supporting ribs are placed between the 5 layers of fiber cloth. The 5 layers of fiber cloth, the supporting ribs, the upper mounting frame and the lower mounting frame are fixed as a whole by insulating fastening screws; a plurality of spaced channels are formed between the fiber cloths by the supporting ribs, and the channels are used to form air ducts.

[0010] Furthermore, 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 to the fiber cloth by gluing, and each layer of fiber cloth is provided with 25 support ribs.

[0011] Furthermore, the support ribs include a first support rib and a second support rib; the first support rib has two mounting holes at the top and the bottom, the second support rib has no mounting holes, the first support rib has 5 ribs per layer, and the second support rib has 16 ribs per layer;

[0012] The same number of second supporting ribs are evenly spaced between every two first supporting ribs; the spacing between the supporting ribs in different layers is different; the higher the number of layers, the larger the spacing.

[0013] Furthermore, the upper mounting frame and the lower mounting frame are both made of polytetrafluoroethylene material, with a hollow middle portion to leave reinforcing ribs, one side processed into an arc shape to leave mounting holes for insulating fastening screws with the support ribs, and the other side processed into a flat surface to leave mounting holes for the metal frame.

[0014] Furthermore, the metal frame is made of aluminum alloy, and includes an upper horizontal beam, a lower horizontal beam, a left vertical beam and a right vertical beam. Each part is connected with screws. One side of the metal frame is connected to the upper mounting frame and the lower mounting frame, and the other side is connected to the end face of the array antenna.

[0015] Compared with other existing polarization conversion schemes, the present invention has the following advantages:

[0016] 1 In the present invention, the wave-transmitting foam material is used to replace the commonly used paper honeycomb board material, so that the overall ignition point of the polarizer is increased to about 300°C, thereby improving the power resistance of the polarizer;

[0017] 2 The present invention uses rib-shaped wave-transmitting foam materials to avoid using curved foam materials, thereby avoiding the problems of difficult processing and high cost of curved foam boards;

[0018] 3 The gaps formed between the ribs and the fiber cloth in the present invention can form an air duct, and when in use, cold air is passed to cool the fiber cloth and ribs in the polarizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A polarizer assembly diagram provided for an embodiment of the present application;

[0020] Figure 2 A diagram showing the combination of the first layer of fiber cloth and ribs provided in an embodiment of the present application;

[0021] Figure 3 An upper installation frame diagram provided for an embodiment of the present application;

[0022] Figure 4 A diagram of a metal frame provided for an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0024] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] The polarizer structure of the present invention comprises a fiber cloth 1, a support rib 2, an upper mounting frame 3, a lower mounting frame 4, a metal frame 5, and an insulating fastening screw 6; wherein the fiber cloth 1 has 5 layers, which are stacked in an arc shape and placed between the upper mounting frame 3 and the lower mounting frame 4 in sequence, 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 by the insulating fastening screw 6. A plurality of spaced channels are formed between the fiber cloths 1 by the support ribs, and the channels are used to form an air duct, and cold air is introduced into the air duct through other devices to cool the fiber cloth 1 and the support rib 2.

[0026] The material of the support ribs 2 in the present invention is PMI foam material. The positions between the support ribs 2 are adjusted as needed. After the relative position size is calculated, the support ribs 2 are preliminarily connected to the fiber cloth 1 by gluing. Each layer of fiber cloth 1 is provided with 25 support ribs 2. The support ribs are divided into two types, namely, the first support ribs 2-1 and the second support ribs 2-2. The support ribs are 290 mm long, 10 mm wide, and 5 mm thick.

[0027] The support ribs 2 in the present invention include a first support rib 2-1 and a second support rib 2-2. The first support rib 2-1 has two mounting holes at the top and bottom, and the second support rib 2-2 has no mounting holes. There are 5 first support ribs 2-1 in each layer, and 16 second support ribs 2-2 in each layer. The same number of second support ribs 2-2 are evenly spaced between every two first support ribs 2-1. The spacing between the support ribs in different layers is different; the higher the number of layers, the larger the spacing. The spacing between the first support rib 2-1 and the second support rib 2-2 is different in each layer. In the example, the spacing between the first support rib 2-1 and the second support rib 2-2 in the first layer of fiber cloth is 23.2mm, 23.6mm in the second layer, 23.8mm in the third layer, and 24.2mm in the fourth layer.

[0028] The upper mounting frame 3 and the lower mounting frame 4 in the present invention are both made of polytetrafluoroethylene material, with a hollow middle portion having reinforcing ribs, one side being processed into an arc shape with mounting holes for insulating and fastening screws 6 for the support ribs, and the other side being processed into a flat surface with mounting holes for the metal frame 5.

[0029] The metal frame 5 in the present invention is made of aluminum alloy material. The metal frame 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. The various parts are connected with 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.

[0030] The above-described embodiments of the present application do not constitute a limitation on the protection scope of the present application.

Claims

1. A rib-type polarizer structure, characterized in that: The rib type polarizer structure comprises: The polarizer structure comprises a fiber cloth (1), a supporting rib (2), an upper mounting frame (3), a lower mounting frame (4), a metal frame (5), and an insulating fastening screw (6); wherein the fiber cloth (1) has a total of 5 layers, which are stacked in an arc shape and placed in sequence between the upper mounting frame (3) and the lower mounting frame (4); the supporting rib (2) is placed between the 5 layers of fiber cloth 1; the 5 layers of fiber cloth (1), the supporting rib (2), the upper mounting frame (3) and the lower mounting frame (4) are fixed as a whole by the insulating fastening screw (6); a plurality of spaced channels are formed between the fiber cloth (1) by the supporting ribs, and the channels are used to form air ducts.

2. The rib-type polarizer structure according to claim 1, characterized in that: The material of the support ribs (2) is PMI foam material. The positions between the support ribs (2) are adjusted as required. The support ribs (2) are preliminarily connected to the fiber cloth (1) by gluing. Each layer of fiber cloth (1) is provided with 25 support ribs (2).

3. The rib-type polarizer structure according to claim 1, characterized in that: 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 the bottom, and the second supporting rib (2-2) has no mounting hole; 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 in different layers is different; the higher the number of layers, the larger the spacing.

4. 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 to leave reinforcing ribs, one side is processed into an arc shape to leave mounting holes for insulating fastening screws (6) with support ribs, and the other side is processed into a flat surface to leave mounting holes with the metal frame (5).

5. The rib-type polarizer structure according to claim 1, characterized in that: The metal frame (5) is made of aluminum alloy and comprises 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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