An air-cooled Ka-EHF band phased array antenna with a vertically layered waterproof structure

Abstract

The present invention discloses an air-cooled Ka-EHF frequency band phased array antenna adopting a vertical layered waterproof structure, which belongs to the technical field of communication antennas. The present invention comprises, from top to bottom, an antenna cover, a radio frequency layer, a heat dissipation layer and a control layer; sealing ring grooves are provided between the layers, sealing rings are laid and water retaining edges are provided; the radio frequency layer comprises a radio frequency layer shell, an antenna array, an active radio frequency component and a feeding network; the heat dissipation layer comprises a heat dissipation layer frame and a fan, and the active radio frequency component is fixed on the upper surface of the heat dissipation layer frame; the control layer comprises a control layer frame and an integrated control board, and a cable cavity is provided on one side of the heat dissipation layer shell and the control layer shell; the inner upper surface of the heat dissipation layer shell and the upper surface of the control layer shell are provided with heat dissipation fins, and the inner upper surface of the control layer shell is provided with a boss in contact with the integrated control board. The present invention meets the heat dissipation requirements of high-frequency phased array antennas while being waterproof, and has the advantages of strong operability and meeting the complex internal electrical interconnection.

Description

Technical Field

[0001] The present invention relates to the technical field of communication antennas, and in particular to an air-cooled Ka-EHF frequency band phased array antenna adopting a vertically layered waterproof structure. Background Art

[0002] As a highly integrated active device, the phased array antenna usually has a large heat flux density, especially in the active RF components and power conversion modules where the heat is particularly concentrated. Natural convection heat dissipation often cannot meet the requirements. At this time, forced air cooling is usually used according to the task requirements. However, due to the addition of fans, the phased array antenna needs to have additional air inlets and outlets, which makes the originally sealed structure no longer sealed, and rainwater from the outside can enter the phased array antenna through the air inlets and outlets of the fan. At the same time, due to the needs of functional realization, the phased array antenna requires more electrical interconnections inside, and the realization of electrical interconnections may further damage the sealing of the structure.

[0003] For high-frequency phased array antennas, especially Ka and EHF band phased array antennas, the difficulty of achieving both heat dissipation and sealing requirements is further increased due to the small channel spacing and compact size. Summary of the invention

[0004] In view of this, the present invention provides an air-cooled Ka-EHF band phased array antenna with a vertically layered waterproof structure and a design method thereof, which meets the heat dissipation requirements of the phased array antenna while being waterproof, and has the advantages of simple structure, strong operability, and meeting the requirements of complex internal electrical interconnection.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An air-cooled Ka-EHF band phased array antenna with a vertically layered waterproof structure, which comprises, from top to bottom, a radome 4, a radio frequency layer 1, a heat dissipation layer 2 and a control layer 3;

[0007] Among them, the radio frequency layer 1 includes a radio frequency layer shell 103, the radio frequency layer shell 103 includes four side surfaces and an upper surface, the upper surface of the radio frequency layer shell 103 is provided with a Ka-EHF band antenna array 101, the antenna cover 4 is connected to the upper surface of the radio frequency layer shell 103 by screws, the antenna cover 4 wraps the Ka-EHF band antenna array 101, and an external waterproof radio frequency connector 102 is provided on the side of the radio frequency layer shell 103. The inside of the radio frequency layer shell 103 is provided with a Ka-EHF band active radio frequency component 104 and a Ka-EHF band feeding network 105, and the Ka-EHF band active radio frequency component 104 is respectively connected to the Ka-EHF band antenna array 101, the external waterproof radio frequency connector 102 and the Ka-EHF band feeding network 105;

[0008] The heat dissipation layer 2 includes a heat dissipation layer shell 202, and the heat dissipation layer shell 202 includes four side surfaces and an upper surface. The Ka-EHF frequency band active radio frequency component 104 is fixed on the upper surface of the heat dissipation layer shell 202. The radio frequency layer shell 103 is connected to the upper surface of the heat dissipation layer shell 202 by screws. A first cable cavity 201 is provided on one side of the heat dissipation layer shell 202. The first cable cavity 201 is opened up and down, and the first cable cavity 201 is located on a side adjacent to the Ka-EHF frequency band feeding network 105. Ventilation holes are provided on the remaining side surfaces of the heat dissipation layer shell 202. A fan 203 is provided inside the heat dissipation layer shell 202. The inner upper surface of the heat dissipation layer shell 202 is provided with heat dissipation fins, and the position of the heat dissipation fins corresponds to the Ka-EHF frequency band active radio frequency component 104.

[0009] The control layer 3 includes a control layer shell 302, which includes four side surfaces and an upper surface. The heat dissipation layer shell 202 is connected to the upper surface of the control layer shell 302 by screws. An external waterproof control and power connector 303 is provided on the side of the control layer shell 302. A groove is provided on the upper surface of the control layer shell 302, and an opening is provided at the bottom of the groove. The fan 203 is placed in the groove. A second cable cavity 301 is provided on one side of the control layer shell 302. The second cable cavity 301 has upper and lower openings, and the second cable cavity 301 corresponds to the position of the first cable cavity 201. An integrated control panel 304 is provided inside the control layer shell 302, and a lower cover plate matching the control layer shell 302 is provided below the integrated control panel 304. The control layer shell 302 is connected to the lower cover plate by screws, and the fan 203 is connected to the integrated control panel 304 to the external waterproof control and power connector 303;

[0010] A boss is provided on the inner upper surface of the control layer housing 302 corresponding to the high-power module of the integrated control board 304, the boss is in contact with the high-power module, and a heat dissipation fin is provided on the outer upper surface of the control layer housing 302 corresponding to the boss;

[0011] The cables of the Ka-EHF band active RF component 104 and the Ka-EHF band feeding network 105 pass through the first cable cavity 201 and the second cable cavity 301 and are connected to the integrated control board 304 .

[0012] Furthermore, a first sealing groove is provided at the connection between the antenna cover 4 and the RF layer shell 103, and a first sealing ring is provided in the first sealing groove; a second sealing groove is provided at the connection between the RF layer shell 103 and the heat dissipation layer shell 202, and a second sealing ring is provided in the second sealing groove; a first water retaining edge is provided on the heat dissipation layer shell 202, and the first water retaining edge is located on the inner side of the connection between the RF layer shell 103 and the heat dissipation layer shell 202; a second cable cavity 301 of the control layer shell 302 is provided with a second water retaining edge, and the outer circle of the second water retaining edge corresponds to the inner circle of the first cable cavity 201; the second cable cavity 301 is inserted into the first cable cavity 201; a third sealing groove is provided around the second water retaining edge, and a third sealing ring is provided in the third sealing groove.

[0013] Furthermore, a waterproof and breathable valve 305 is provided on the side of the control layer shell 302 to connect the inside and outside of the control layer shell 302 .

[0014] The beneficial effects of the above technical solution of the present invention are:

[0015] 1. The present invention effectively designs an air-cooled Ka-EHF band phased array antenna with a vertically layered waterproof structure, which effectively solves the problems of air cooling and heat dissipation of high-frequency band phased array antennas and complex internal electrical interconnection while being waterproof.

[0016] 2. In the present invention, the heat dissipation layer is independent of the RF layer and the functional layer, and the air duct does not need to pass through the inside of the phased array antenna. Therefore, there is no need to add a waterproof structure separately to each functional module inside the phased array antenna, thereby reducing the redundant increase in weight.

[0017] 3. In the present invention, the heat dissipation layer is in direct contact with the heat source position, the heat conduction path is short, and the heat conduction efficiency is high. There is no need to design a separate heat conduction structure to "lead" the heat to other positions for heat dissipation.

[0018] 4. The technical solution adopted by the present invention is mature in design and highly operable.

[0019] 5. The technical solution adopted by the present invention has a simple structure and is suitable for promotion. It can be extended to the design of other air-cooled and waterproof phased array antennas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the Ka-EHF band phased array antenna structure in an embodiment of the present invention.

[0021] Figure 2 FIG. 4 is a schematic diagram of a radio frequency layer according to an embodiment of the present invention.

[0022] Figure 3 Schematic diagram of the heat dissipation layer in an embodiment of the present invention.

[0023] Figure 4Schematic diagram of the control layer in an embodiment of the present invention.

[0024] Specifically, the accompanying drawings are marked as follows:

[0025] 1. RF layer; 2. Heat dissipation layer; 3. Control layer; 4. Antenna cover; 101. Ka-EHF band antenna array; 102. External waterproof RF connector; 103. RF layer shell; 104. Ka-EHF band active RF components; 105. Ka-EHF band feeding network; 201. First cable cavity; 202. Heat dissipation layer shell; 203. Fan; 301. Second cable cavity; 302. Control layer shell; 303. External waterproof control and power connector; 304. Integrated control board; 305. Waterproof breathable valve. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] An air-cooled Ka-EHF band phased array antenna with a vertically layered waterproof structure, such as Figure 1 As shown, from top to bottom are the antenna cover 4, the radio frequency layer 1, the heat dissipation layer 2 and the control layer 3;

[0028] Among them, Figure 2 As shown, the RF layer 1 includes a RF layer shell 103, and the RF layer shell 103 includes four side surfaces and an upper surface. The upper surface of the RF layer shell 103 is provided with a Ka-EHF band antenna array 101, and the antenna cover 4 is connected to the upper surface of the RF layer shell 103 by screws. The antenna cover 4 wraps the Ka-EHF band antenna array 101, and an external waterproof RF connector 102 is provided on the side of the RF layer shell 103. The interior of the RF layer shell 103 is provided with a Ka-EHF band active RF component 104 and a Ka-EHF band feeding network 105, and the Ka-EHF band active RF component 104 is respectively connected to the Ka-EHF band antenna array 101, the external waterproof RF connector 102 and the Ka-EHF band feeding network 105;

[0029] like Figure 3As shown, the heat dissipation layer 2 includes a heat dissipation layer shell 202, and the heat dissipation layer shell 202 includes four side surfaces and an upper surface. The Ka-EHF band active RF component 104 is fixed on the upper surface of the heat dissipation layer shell 202, and the RF layer shell 103 is connected to the upper surface of the heat dissipation layer shell 202 by screws. A first cable cavity 201 is provided on one side of the heat dissipation layer shell 202, and the first cable cavity 201 is opened up and down, and the first cable cavity 201 is located on a side adjacent to the Ka-EHF band feeding network 105. Ventilation holes are provided on the remaining side surfaces of the heat dissipation layer shell 202, and a fan 203 is provided inside the heat dissipation layer shell 202. The inner upper surface of the heat dissipation layer shell 202 is provided with heat dissipation fins, and the position of the heat dissipation fins corresponds to the Ka-EHF band active RF component 104;

[0030] Specifically, the active RF components in the Ka-EHF band dissipate heat in the heat dissipation layer by contacting with the heat dissipation fins;

[0031] like Figure 4 As shown, the control layer 3 includes a control layer shell 302, and the control layer shell 302 includes four side surfaces and an upper surface. The heat dissipation layer shell 202 is connected to the upper surface of the control layer shell 302 by screws. The side of the control layer shell 302 is provided with an external waterproof control and power connector 303. The upper surface of the control layer shell 302 is provided with a groove, and the bottom of the groove is provided with an opening. The fan 203 is placed in the groove. A second cable cavity 301 is provided on one side of the control layer shell 302. The second cable cavity 301 has upper and lower openings, and the second cable cavity 301 corresponds to the position of the first cable cavity 201. An integrated control panel 304 is provided inside the control layer shell 302, and a lower cover plate matching the control layer shell 302 is provided below the integrated control panel 304. The control layer shell 302 is connected to the lower cover plate by screws, and the fan 203 is connected to the integrated control panel 304 to the external waterproof control and power connector 303;

[0032] A boss is provided on the inner upper surface of the control layer housing 302 corresponding to the high-power module of the integrated control board 304, the boss is in contact with the high-power module, and a heat dissipation fin is provided on the outer upper surface of the control layer housing 302 corresponding to the boss;

[0033] Specifically, the integrated control board dissipates heat in the heat dissipation layer by contacting with the heat dissipation fins;

[0034] The cables of the Ka-EHF band active RF component 104 and the Ka-EHF band feeding network 105 pass through the first cable cavity 201 and the second cable cavity 301 and are connected to the integrated control board 304 .

[0035] Furthermore, a first sealing groove is provided at the connection between the antenna cover 4 and the RF layer shell 103, and a first sealing ring is provided in the first sealing groove; a second sealing groove is provided at the connection between the RF layer shell 103 and the heat dissipation layer shell 202, and a second sealing ring is provided in the second sealing groove; a first water retaining edge is provided on the heat dissipation layer shell 202, and the first water retaining edge is located on the inner side of the connection between the RF layer shell 103 and the heat dissipation layer shell 202; a second cable cavity 301 of the control layer shell 302 is provided with a second water retaining edge, and the outer circle of the second water retaining edge corresponds to the inner circle of the first cable cavity 201; the second cable cavity 301 is inserted into the first cable cavity 201; a third sealing groove is provided around the second water retaining edge, and a third sealing ring is provided in the third sealing groove.

[0036] Specifically, the design of the water retaining edge and the sealing groove enables the phased array antenna to achieve a waterproof design;

[0037] Furthermore, a waterproof and breathable valve 305 is provided on the side of the control layer shell 302 to connect the inside and outside of the control layer shell 302 .

[0038] Specifically, the waterproof breathable valve makes the air pressure inside and outside the phased array antenna consistent, further ensuring the sealing effect.

[0039] In summary, the present invention has a mature structure, is easy to implement, has high precision, and low cost, and can effectively realize the combination of heat dissipation and sealing and waterproofing of the Ka-EHF frequency band phased array antenna, which is an important improvement over the prior art.

[0040] It should be understood that the above description of the specific implementation methods of this patent is only an exemplary description listed to facilitate ordinary technicians in the field to understand the patent scheme, and does not imply that the scope of protection of this patent is limited to these individual examples. Ordinary technicians in this field can fully understand the technical scheme of this patent and, without any creative work, obtain more specific implementation methods by combining technical features, replacing some technical features, adding more technical features, etc. to the examples listed in this patent. All these specific implementation methods are within the scope of the claims of this patent. Therefore, these new specific implementation methods should also be within the scope of protection of this patent.

Claims

1. An air-cooled Ka-EHF band phased array antenna with a vertically layered waterproof structure, characterized in that: From top to bottom, they are the antenna cover (4), the radio frequency layer (1), the heat dissipation layer (2) and the control layer (3); The radio frequency layer (1) comprises a radio frequency layer shell (103), the radio frequency layer shell (103) comprises four side surfaces and an upper surface, the upper surface of the radio frequency layer shell (103) is provided with a Ka-EHF frequency band antenna array (101), the antenna cover (4) is connected to the upper surface of the radio frequency layer shell (103) by screws, the antenna cover (4) wraps the Ka-EHF frequency band antenna array (101), the side surface of the radio frequency layer shell (103) is provided with an external waterproof radio frequency connector (102), the inside of the radio frequency layer shell (103) is provided with a Ka-EHF frequency band active radio frequency component (104) and a Ka-EHF frequency band feeding network (105), and the Ka-EHF frequency band active radio frequency component (104) is respectively connected to the Ka-EHF frequency band antenna array (101), the external waterproof radio frequency connector (102) and the Ka-EHF frequency band feeding network (105); The heat dissipation layer (2) comprises a heat dissipation layer shell (202), the heat dissipation layer shell (202) comprises four side surfaces and an upper surface, a Ka-EHF band active radio frequency component (104) is fixed on the upper surface of the heat dissipation layer shell (202), the radio frequency layer shell (103) is connected to the upper surface of the heat dissipation layer shell (202) by screws, a first cable cavity (201) is provided on one side of the heat dissipation layer shell (202), the first cable cavity (201) is opened at the top and bottom, and the first cable cavity (201) is located on a side adjacent to the Ka-EHF band feeding network (105), ventilation holes are provided on the remaining side surfaces of the heat dissipation layer shell (202), a fan (203) is provided inside the heat dissipation layer shell (202), and heat dissipation fins are provided on the inner upper surface of the heat dissipation layer shell (202), and the position of the heat dissipation fins corresponds to the Ka-EHF band active radio frequency component (104); The control layer (3) comprises a control layer shell (302), the control layer shell (302) comprises four side surfaces and an upper surface, the heat dissipation layer shell (202) is connected to the upper surface of the control layer shell (302) by screws, an external waterproof control and power connector (303) is provided on the side of the control layer shell (302), a groove is provided on the upper surface of the control layer shell (302), an opening is provided at the bottom of the groove, the fan (203) is placed in the groove, and a second cable cavity is provided on one side of the control layer shell (302) The second cable cavity (301) is opened at the top and the bottom, and the second cable cavity (301) corresponds to the position of the first cable cavity (201). An integrated control panel (303) is provided inside the control layer housing (302). A lower cover plate matching the control layer housing (302) is provided below the integrated control panel (304). The control layer housing (302) and the lower cover plate are connected by screws. The fan (203) and the integrated control panel (304) are connected to an external waterproof control and power connector (303). A boss is provided on the inner upper surface of the control layer shell (302) corresponding to the high-power module of the integrated control panel (304), the boss is in contact with the high-power module, and a heat dissipation fin is provided on the outer upper surface of the control layer shell (302) corresponding to the boss; A waterproof and breathable valve (305) is provided on the side of the control layer housing (302) to connect the inside and outside of the control layer housing (302); The cables of the Ka-EHF band active radio frequency component (104) and the Ka-EHF band feeding network (105) pass through the first cable cavity (201) and the second cable cavity (301) and are connected to the integrated control board (304); A first sealing groove is provided at the connection between the antenna cover (4) and the radio frequency layer shell (103), and a first sealing ring is provided in the first sealing groove; a second sealing groove is provided at the connection between the radio frequency layer shell (103) and the heat dissipation layer shell (202), and a second sealing ring is provided in the second sealing groove; a first water retaining edge is provided on the heat dissipation layer shell (202), and the first water retaining edge is located on the inner side of the connection between the radio frequency layer shell (103) and the heat dissipation layer shell (202); a second cable cavity (301) of the control layer shell (302) is provided with a second water retaining edge, and an outer circle of the second water retaining edge corresponds to an inner circle of the first cable cavity (201); the second cable cavity (301) is inserted into the first cable cavity (201); a third sealing groove is provided around the second water retaining edge, and a third sealing ring is provided in the third sealing groove.

Images