CN216563559U - Heat radiation structure of phased array antenna array face and phased array antenna assembly thereof - Google Patents
Heat radiation structure of phased array antenna array face and phased array antenna assembly thereof Download PDFInfo
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- CN216563559U CN216563559U CN202220845197.9U CN202220845197U CN216563559U CN 216563559 U CN216563559 U CN 216563559U CN 202220845197 U CN202220845197 U CN 202220845197U CN 216563559 U CN216563559 U CN 216563559U
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Abstract
The utility model belongs to the technical field of phased array antennas, and discloses a radiating structure of a phased array antenna array surface and a phased array antenna assembly thereof, wherein the radiating structure comprises: the heat dissipation unit is internally provided with a through ventilation channel, and an air inlet and an air outlet are formed at two ends of the ventilation channel; the fan blows cooling air into an air inlet of the ventilation channel; and a fin group arranged in the partial ventilation channel; the front section of the ventilation channel is not provided with fin groups, the middle section and the rear section of the ventilation channel are provided with fin groups, and the heat exchange area of the fin groups in the middle section of the ventilation channel is smaller than that of the fin groups in the rear section; and laying a phased array antenna array surface on the heat dissipation unit. The utility model can make the temperature of each TR component in the whole phased array antenna array surface uniform, and realize the effective adjustment of the radiating temperature difference of the phased array antenna array surface.
Description
Technical Field
The utility model belongs to the technical field of phased array antennas, and particularly relates to a radiating structure of a phased array antenna array surface and a phased array antenna assembly of the phased array antenna array surface.
Background
A phased array antenna refers to an antenna that changes a pattern shape by controlling a feeding phase of a radiation element in an array antenna. The control phase can change the direction of the maximum value of the antenna pattern so as to achieve the purpose of beam scanning. The phased array antenna overcomes the characteristics of large mechanical scanning inertia and low speed, and is widely applied to radars. The TR component is a transceiver component, and TR is an abbreviation for Transmitter and Receiver. The TR element is generally defined as the portion of a wireless transceiver system between the video and the antenna. The TR assembly is a key component of an active phased array radar. The array surface of the phased array antenna is formed by arranging TR components.
The conventional heat dissipation of phased array antenna has modes such as natural air cooling, forced air cooling, liquid cooling, along with the rapid development of phased array antenna technique, phased array antenna power heat density constantly improves, and in order to satisfy the heat dissipation demand, more and more structural design adopts forced air cooling or liquid cooling heat dissipation mode. Liquid cooling heat dissipation increases the complexity of the design of the TR component box body; in addition, the liquid joints are many, the design for preventing liquid leakage is very difficult, the liquid flow resistance is large, and a liquid pump with enough capacity is required for pushing, so that the design of the whole antenna is very complicated and large, and the maintainability is poor.
Although the traditional forced air cooling heat dissipation mode is simple in structure, the available space of the phased array antenna is limited, the air quantity of a selected fan is limited, the air course is too long, and under the condition of the same heat dissipation fin, the heat exchange efficiency of an air inlet and an air outlet of the whole machine is different, so that the array surface temperature difference of the phased array antenna is very large, the phase fluctuation of the whole machine is influenced, and the pointing accuracy is deteriorated.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a heat dissipation structure of a phased array antenna array surface and a phased array antenna assembly thereof, which can enable the temperature of each TR assembly in the whole phased array antenna array surface to be uniform and realize the effective adjustment of the heat dissipation temperature difference of the phased array antenna array surface.
In order to realize the purpose, the utility model adopts the technical scheme that: a heat dissipating structure for a phased array antenna array, comprising:
the heat dissipation unit is internally provided with a through ventilation channel, and an air inlet and an air outlet are formed at two ends of the ventilation channel; laying a phased array antenna array surface on the heat dissipation unit;
the fan blows cooling air into an air inlet of the ventilation channel;
and a fin group arranged in the partial ventilation channel; the front section of the ventilation channel is not provided with fin groups, the middle section and the rear section of the ventilation channel are provided with fin groups, and the heat exchange area of the fin groups in the middle section of the ventilation channel is smaller than that of the fin groups in the rear section.
Further, the heat dissipating unit includes:
the first heat dissipation unit is internally provided with a first through ventilation channel; the front end of the first heat dissipation unit is used as an air inlet; a first fin group is arranged in the rear section of the first ventilation channel, and a fin group is not arranged in the front section of the first ventilation channel;
the second heat dissipation unit is internally provided with a through second ventilation channel; the front end of the second heat dissipation unit is connected with the rear end of the first heat dissipation unit; the rear end of the second heat dissipation unit is used as an air outlet; a second fin group is arranged in the second ventilation channel;
the second fin group comprises a second fin group A and a second fin group B; a second fin group A is arranged in the front section of the second ventilation channel, and a second fin group B is arranged in the rear section of the second ventilation channel;
the heat exchange area of the second fin group A is the same as that of the first fin group, and the heat exchange area of the second fin group A is larger than that of the second fin group B.
Further, the first fin group comprises a plurality of sub-fins I which are arranged in parallel and at intervals.
Further, the second fin group A comprises a plurality of sub-fins II which are arranged in parallel and at intervals.
Furthermore, the size and the shape of the sub-fin I and the sub-fin II are the same.
Furthermore, the sub-fins I and the sub-fins II are both square plates.
Further, the second fin group B comprises a plurality of parallel sub-fins iii, and the sub-fins iii are wavy fins.
The utility model also provides a phased array antenna assembly comprising:
the phased array antenna subarray comprises a heat dissipation structure with a plurality of phased array antenna array surfaces, and the phased array antenna array surfaces are arranged on the heat dissipation structure;
and the outer frame is arranged at the periphery of the phased array antenna subarray and bears at least one phased array antenna subarray.
The beneficial effects of the technical scheme are as follows:
according to the utility model, under the condition of a certain air volume, the temperature of each TR component in the whole phased array antenna array surface is uniform through the relative position, density degree and shape of the radiating fins at each part, so that the effective adjustment of the temperature difference of the phased array antenna array surface can be realized; on the premise of ensuring temperature balance, the phase fluctuation of the whole machine is avoided, and the pointing accuracy is improved.
According to the utility model, no fin group is arranged in the front section of the ventilation channel, the fin groups are arranged in the middle section and the rear section of the ventilation channel, and the heat exchange area of the fin group in the middle section of the ventilation channel is smaller than that of the fin group in the rear section; utilize the fan to blow in the back with cooling air, the anterior segment, the middle section and the back end that flow through the ventilation passageway in proper order. The front end part is designed into a structure without radiating fins, so that the heat exchange area between the air duct fins and cold air is reduced; because the temperature of the cooling air after flowing backwards can be increased step by step, the temperature of the cooling air at the rear section is higher than that of the cooling air at the middle section by arranging the fin group with the heat exchange area smaller than that of the fin group in the rear section at the middle section, so that the heat exchange efficiency of the rear section is higher; therefore, the array surface temperature of the air inlet and the air outlet of the whole phased array antenna is balanced as much as possible, the temperature of the whole phased array antenna array surface TR component is uniform, and the effective adjustment of the phased array antenna array surface temperature difference is realized.
Drawings
Fig. 1 is a schematic front-end structure diagram of a heat dissipation structure of a phased array antenna array plane according to the present invention;
fig. 2 is a schematic diagram of a rear end structure of a heat dissipation structure of a phased array antenna array plane according to the present invention;
fig. 3 is a schematic front end structure diagram of a heat dissipation structure of a first heat dissipation unit according to an embodiment of the present invention;
fig. 4 is a schematic rear end structure view of the heat dissipation structure of the first heat dissipation unit in the embodiment of the present invention;
fig. 5 is a schematic front end structure diagram of a heat dissipation structure of a second heat dissipation unit according to an embodiment of the present invention;
fig. 6 is a schematic rear end structure view of a heat dissipation structure of a second heat dissipation unit according to an embodiment of the present invention;
FIG. 7 is a schematic front end view of a phased array antenna assembly of the present invention;
FIG. 8 is a schematic rear end view of a phased array antenna assembly of the present invention;
the system comprises a base, a plurality of radiating units, a fan and an outer frame, wherein 1 is a ventilation channel, 2 is an air inlet, 3 is an air outlet, 4 is a fin group, 5 is a phased array antenna array surface, 6 is a first radiating unit, 7 is a second radiating unit, 8 is the fan and 9 is the outer frame;
1-1 is a first ventilation channel, 1-2 is a second ventilation channel, 4-1 is a first fin group, 4-2 is a second fin group A, and 4-3 is a second fin group B.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described below with reference to the accompanying drawings.
In this embodiment, referring to fig. 1-2, a heat dissipation structure of a phased array antenna array includes:
the heat dissipation device comprises a heat dissipation unit, a ventilation channel 1 and a fan, wherein the heat dissipation unit is internally provided with the ventilation channel 1 which is through, and an air inlet 2 and an air outlet 3 are formed at two ends of the ventilation channel 1; laying a phased array antenna array surface 5 on the heat dissipation unit;
the fan 8, the fan 8 blows the cooling air into the air inlet 2 of the ventilation channel 1;
and a fin group 4 disposed in the partial ventilation passage 1; the fin group 4 is not arranged in the front section of the ventilation channel 1, the fin group 4 is arranged in the middle section and the rear section of the ventilation channel 1, and the heat exchange area of the fin group 4 in the middle section of the ventilation channel 1 is smaller than that of the fin group 4 in the rear section.
As an optimized solution of the above embodiment, as shown in fig. 1 to 2, the heat dissipation unit includes:
as shown in fig. 3 to 4, the first heat dissipation unit 6 is internally provided with a first ventilation channel 1-1 which is through; the front end of the first heat dissipation unit 6 is used as an air inlet 2; a first fin group 4-1 is arranged in the rear section of the first ventilation channel 1-1, and the fin group 4 is not arranged in the front section of the first ventilation channel 1-1;
as shown in fig. 5-6, and a second heat dissipation unit 7, a second ventilation channel 1-2 is arranged inside the second heat dissipation unit 7; the front end of the second heat dissipation unit 7 is connected with the rear end of the first heat dissipation unit 6; the rear end of the second heat dissipation unit 7 is used as an air outlet 3; a second fin group is arranged in the second ventilation channel 1-2;
the second fin group comprises a second fin group A4-2 and a second fin group B4-3; a second fin group A4-2 is arranged in the front section of the second ventilation channel 1-2, and a second fin group B4-3 is arranged in the rear section of the second ventilation channel 1-2;
the heat exchange area of the second fin group A4-2 is the same as that of the first fin group 4-1, and the heat exchange area of the second fin group A4-2 is larger than that of the second fin group B4-3.
The first fin group 4-1 and the second fin group a4-2 are located below the middle of the front; because the cooling air blown in by the fan 8 is low in temperature initially, the cooling air blown in by the fan 8 firstly passes through the finless section of the first ventilation channel 1-1, the heat dissipation fins with the same structure are arranged inside the rear end of the first ventilation channel 1-1 and the front end of the second ventilation channel 1-2 to enable the temperature difference in the middle of the array surface to be small, and finally the second fin group B4-3 with a large heat dissipation area is utilized to exchange heat with the air in the rear end of the second ventilation channel 1-2 and then is discharged from the air outlet 3, so that the temperature of the phased array antenna array surface 5 on the path from the air inlet 2 to the air outlet 3 of the whole machine is balanced as far as possible.
The first fin group 4-1 comprises a plurality of sub-fins I which are arranged in parallel and at intervals. The second fin group A4-2 comprises a plurality of sub fins II which are arranged in parallel and at intervals. The size and the shape of the sub-fin I and the sub-fin II are the same.
Preferably, the first sub-fin and the second sub-fin are both square plates.
The second fin group B4-3 comprises a plurality of parallel sub-fins III, and the sub-fins III are wave-shaped fins. The heat exchange area between the rear end of the second ventilation channel 1-2 and the cooling air is increased, the heat exchange efficiency is improved, and the temperature of the array surface of the air inlet 2 and the air outlet 3 of the whole machine is balanced as much as possible.
The preferred scheme is as follows: the length of the first heat dissipation unit 6 is 132mm, the inner part of the sub-fin I extends by 66mm, and the finless part is also 66 mm; the length of the second heat dissipation unit 7 is 132mm, the second sub-fin extends inwards by 66mm, and the third sub-fin extends inwards by 66 mm; the distance between every two sub-fins I is 5mm, and the thickness of each sub-fin I is 0.8 mm; the thickness of the sub-fins II is 1mm, and the distance between every two adjacent sub-fins II is 4 mm; the joint of the two fins is in staggered connection because of different fin intervals, so that the heat exchange effect is improved.
In another aspect, as shown in fig. 7 and 8, the present invention also provides a phased array antenna assembly comprising:
the phased array antenna subarray comprises a plurality of radiating structures of the phased array antenna array surfaces, wherein the radiating structures are provided with phased array antenna array surfaces 5;
and the outer frame 9 is arranged at the periphery of the phased array antenna subarray and bears at least one phased array antenna subarray.
For a better understanding of the present invention, the following is a complete description of the working principle of the present invention:
open fan 8, fan 8 blows in back ventilation passageway 1 with cooling air, and cooling air flows through anterior segment, middle section and the back end of ventilation passageway 1 in proper order, carries out the heat transfer after, has air outlet 3 to discharge.
Because the air quantity of the front end part is large, the heat exchange is sufficient, and the temperature of the whole machine array surface is relatively low, the fin group 4 is not arranged in the front section of the ventilation channel 1, and the heat exchange area between the air channel fins and the cold air is reduced.
Because the temperature can rise step by step after the cooling air backward flows, therefore through set up the fin group 4 that heat transfer area is less than the heat transfer area of fin group 4 in the back end in the middle section, reply back end cooling air temperature is higher than middle section cooling air temperature, makes back end heat exchange efficiency higher.
The temperature of the phased array antenna array surface 5 on the road section from the air inlet 2 to the air outlet 3 of the whole machine can be balanced as much as possible by the mode, the temperature difference of the chip in the TR component is controlled to be about 5 ℃, the influence of the temperature on the phase fluctuation of the whole machine is reduced, and the pointing precision of the whole machine is improved.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (8)
1. A heat dissipating structure for a phased array antenna array, comprising:
the heat dissipation unit is internally provided with a through ventilation channel (1), and an air inlet (2) and an air outlet (3) are formed at two ends of the ventilation channel (1); laying a phased array antenna array surface (5) on the heat dissipation unit;
the fan (8), the fan (8) blows the cooling air into the air inlet (2) of the ventilation channel (1);
and a fin group (4) arranged in the partial ventilation channel (1); the front section of the ventilation channel (1) is not provided with the fin group (4), the middle section and the rear section of the ventilation channel (1) are provided with the fin group (4), and the heat exchange area of the fin group (4) in the middle section of the ventilation channel (1) is smaller than that of the fin group (4) in the rear section.
2. The structure of claim 1, wherein the heat sink unit comprises:
the heat dissipation device comprises a first heat dissipation unit (6), wherein a first through ventilation channel (1-1) is arranged in the first heat dissipation unit (6); the front end of the first heat dissipation unit (6) is used as an air inlet (2); a first fin group (4-1) is arranged in the rear section of the first ventilation channel (1-1), and the fin group is not arranged in the front section of the first ventilation channel (1-1);
the second heat dissipation unit (7), a second ventilation channel (1-2) which is through is arranged in the second heat dissipation unit (7); the front end of the second heat dissipation unit (7) is connected with the rear end of the first heat dissipation unit (6); the rear end of the second heat dissipation unit (7) is used as an air outlet (3); a second fin group is arranged in the second ventilation channel (1-2);
the second fin group includes a second fin group A (4-2) and a second fin group B (4-3); a second fin group A (4-2) is arranged in the front section of the second ventilation channel (1-2), and a second fin group B (4-3) is arranged in the rear section of the second ventilation channel (1-2);
the heat exchange areas of the second fin group A (4-2) and the first fin group (4-1) are the same, and the heat exchange area of the second fin group A (4-2) is larger than that of the second fin group B (4-3).
3. A radiating structure of a phased array antenna array according to claim 2, characterised in that said first fin group (4-1) comprises a plurality of spaced sub-fins i arranged side by side.
4. A structure for dissipating heat from a phased array antenna array according to claim 3, characterised in that the second fin group a (4-2) comprises a plurality of spaced apart sub-fins ii arranged in parallel.
5. The structure for dissipating heat from a phased array antenna array according to claim 4, wherein the first and second subfins are the same size and shape.
6. The structure for dissipating heat from a phased array antenna array according to claim 5, wherein each of the first and second sub-fins is a square plate.
7. The structure for dissipating heat from a phased array antenna array according to claim 2, wherein the second fin group B (4-3) comprises a plurality of juxtaposed subfins iii, and the subfins iii are wave fins.
8. A phased array antenna assembly, comprising:
phased array antenna subarrays comprising a plurality of heat dissipating structures of phased array antenna arrays according to any of claims 1 to 7, on which heat dissipating structures phased array antenna arrays (5) are arranged;
and the outer frame (9) is arranged at the periphery of the phased array antenna subarray and is used for bearing at least one phased array antenna subarray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220845197.9U CN216563559U (en) | 2022-04-13 | 2022-04-13 | Heat radiation structure of phased array antenna array face and phased array antenna assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220845197.9U CN216563559U (en) | 2022-04-13 | 2022-04-13 | Heat radiation structure of phased array antenna array face and phased array antenna assembly thereof |
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| Publication Number | Publication Date |
|---|---|
| CN216563559U true CN216563559U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220845197.9U Active CN216563559U (en) | 2022-04-13 | 2022-04-13 | Heat radiation structure of phased array antenna array face and phased array antenna assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216563559U (en) |
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