Multiple-input multiple-output antenna device and heat dissipation device thereof

Abstract

Disclosed are a multiple-input multiple-output antenna device and a heat dissipation device thereof. According to an embodiment of the present application, a multiple-input multiple-output antenna device is provided, including: a substrate having a width and a length greater than the width, and including a plurality of heat generating elements distributed on at least one surface, the substrate including a first region having a first heat generation amount and a second region having a second heat generation amount greater than the first heat generation amount, the first region and the second region being divided along a length direction of the substrate; a first air supply portion disposed to overlap at least a portion of the first region, and configured to cool at least a portion of heat generated by the first region, the first air supply portion including at least one first fan; and a second air supply portion disposed to overlap at least a portion of the second region, and configured to cool at least a portion of heat generated by the second region, the second air supply portion including at least one second fan, an air flow rate discharged from the second air supply portion being greater than an air flow rate discharged from the first air supply portion.

Description

Technical Field

[0001] This invention relates to a multi-input multi-output antenna device and its heat dissipation device. Background Technology

[0002] The content described in this section is merely for providing background information for this invention and does not constitute prior art.

[0003] Wireless communication technologies, such as Multiple Input Multiple Output (MIMO), are techniques that greatly increase data transmission capacity by using multiple antennas. MIMO is a spatial multiplexing method in which the transmitter transmits different data through each transmitting antenna, and the receiver distinguishes the transmitted data through appropriate signal processing.

[0004] Therefore, channel capacity can be increased by simultaneously increasing the number of transmitting and receiving antennas, thereby enabling the transmission of more data. For example, increasing the number of antennas to ten ensures approximately ten times the channel capacity compared to a current single-antenna system using the same frequency band.

[0005] 4G Advanced Long Term Evolution (LTE-Advanced) can use up to eight antennas. Products currently under development in the pre-5G phase include those with 64 or 128 antennas. 5G is expected to use base stations with an even greater number of antennas, a technology known as Massive MIMO. Currently operating cells are two-dimensional; conversely, the introduction of Massive MIMO technology enables 3D beamforming, which can also be referred to as Full Dimension MIMO (FD-MIMO).

[0006] In Massive MIMO technology, as the number of antennas increases, so does the number of transmitters and filters. However, due to limitations in installation site rental fees or space, RF components (antennas / filters / power amplifiers / transceivers, etc.) need to be miniaturized, lightweight, and inexpensive. Massive MIMO antenna devices require high output to extend coverage, and the resulting power consumption and heat generation negatively impact weight and size reduction.

[0007] Furthermore, for Massive MIMO antenna devices, beamforming is performed by adjusting the phase and amplitude of the transmitted and received signals in multiple TX / RX elements. Since the phase and amplitude of the transmitted and received signals in the TX / RX elements are temperature-dependent, beamforming requires pre-calibrating the changes in phase and amplitude in each TX / RX element based on the temperature of the transmitted and received signals.

[0008] Therefore, as the relative temperature difference between the TX / RX components increases, the computational load of the correction components, such as the FPGA, increases. At this time, a large amount of heat is generated in the FPGA, leading to an increase in the overall heat generation of the antenna device.

[0009] In addition, to remove heat generated in communication components, existing antenna devices employ convection cooling methods using heat sinks and fans. For example, existing convection cooling methods involve extending the heat sink vertically and placing a fan above or below the heat sink to cool it. However, this existing convection cooling method inevitably leads to a longer distance that the air exhausted by the fan must travel between the heat sinks, thus reducing cooling efficiency.

[0010] For example, assuming a fan is positioned at the bottom of the heatsink, the air exhausted by the fan cools the lower area of ​​the heatsink before cooling the upper area. In this case, some of the flowing air can leak to the outside, resulting in less air being transferred to the upper area of ​​the heatsink than to the lower area. Furthermore, the air transferred to the upper area of ​​the heatsink can be at a high temperature because other areas of the heatsink are already heated. Therefore, existing convection cooling methods not only reduce overall cooling efficiency but also result in significant differences in cooling efficiency across different areas of the heatsink.

[0011] As mentioned above, Massive MIMO antenna devices require high output to expand coverage, resulting in increased power consumption and heat generation. Furthermore, to achieve proper beamforming, Massive MIMO antenna devices need to reduce the relative temperature difference between individual antennas and the TX / RX components. For this reason, existing convection cooling methods, which suffer from reduced cooling efficiency and significant variations in cooling efficiency across different regions, are unsuitable. Therefore, a new cooling method is needed for Massive MIMO antenna devices that can improve cooling efficiency while reducing the relative temperature difference between different regions of the antenna device. Summary of the Invention

[0012] (a) Technical problems to be solved

[0013] Therefore, the object of the present invention is to provide a cooling method in a multiple-input multiple-output (MMO) antenna device that can improve cooling efficiency while reducing the relative temperature difference between different regions of the antenna device.

[0014] (II) Technical Solution

[0015] According to an embodiment of the present invention, a multiple-input multiple-output antenna device is provided, comprising: a substrate having a width and a length greater than the width, and including a plurality of heat-generating elements distributed on at least one side, the substrate including a first region having a first heat generation and a second region having a second heat generation greater than the first heat generation, the substrate being divided along the length direction of the substrate; a first air supply section being arranged to overlap at least a portion of the first region and for cooling at least a portion of the heat generated in the first region, and including at least one first fan; and a second air supply section being arranged to overlap at least a portion of the second region and for cooling at least a portion of the heat generated in the second region, and including at least one second fan, wherein the air flow rate discharged from the second air supply section is greater than the air flow rate discharged from the first air supply section.

[0016] (III) Beneficial Effects

[0017] As described above, according to this embodiment, the Massive MIMO antenna device effectively removes the heat generated by the heat-generating elements and minimizes the relative temperature difference between the heat-generating elements, thereby improving the function of the antenna device. Attached Figure Description

[0018] Figure 1 This is a perspective view of a multiple-input multiple-output antenna device according to an embodiment of the present invention.

[0019] Figure 2 This is a rear perspective view of a multiple-input multiple-output antenna device according to an embodiment of the present invention.

[0020] Figure 3 This is an exploded perspective view of a multiple-input multiple-output antenna device according to an embodiment of the present invention.

[0021] Figure 4 This is a rear exploded perspective view of a multiple-input multiple-output antenna device according to an embodiment of the present invention.

[0022] Figure 5 This is a side cross-sectional view of a multi-input multi-output antenna device according to an embodiment of the present invention.

[0023] Figure 6This is an example diagram illustrating a method for adjusting the flow rates of the first air supply section and the second air supply section according to an embodiment of the present invention.

[0024] Figure 7 This is a block diagram of the operation of the control unit according to an embodiment of the present invention.

[0025] Figure 8 This is a rear perspective view of the casing and heat sink according to an embodiment of the present invention.

[0026] Figure 9 This is a longitudinal cross-sectional view of the first and second heat sinks according to an embodiment of the present invention.

[0027] Figure 10 This is a side cross-sectional view of the first and second heat sinks according to an embodiment of the present invention.

[0028] Figure 11 and Figure 12 This is an example diagram of a control unit performing redundancy control according to an embodiment of the present invention.

[0029] Figure 13 This is a perspective view of a heat dissipation device according to an embodiment of the present invention.

[0030] Figure 14 This is a rear perspective view of a heat dissipation device according to an embodiment of the present invention.

[0031] Figure 15 yes Figure 2 The diagram shows a multi-input multi-output antenna device with the back cover omitted. Detailed Implementation

[0032] Hereinafter, some embodiments of the present invention will be described in detail with reference to the accompanying drawings. When labeling the various figures, the same reference numerals are used as much as possible, even if the same constituent elements appear in different figures. Throughout this specification, detailed descriptions of known constituent elements and functions are omitted if it is believed that such detailed descriptions would obscure the subject matter of the present invention.

[0033] In describing the constituent elements according to embodiments of the present invention, symbols such as first, second, i), ii), a), and b) may be used. These symbols are used only to distinguish constituent elements from other constituent elements and are not intended to define the nature, order, or sequence of the corresponding constituent elements. In the specification, if a constituent element "comprises" or "possesses" another constituent element, unless explicitly stated otherwise, it shall be understood that the constituent element further includes the other constituent element, rather than that the constituent element excludes the other constituent element.

[0034] Figure 1This is a perspective view of a multiple-input multiple-output antenna device 10 according to an embodiment of the present invention.

[0035] Figure 2 This is a rear perspective view of a multiple-input multiple-output antenna device 10 according to an embodiment of the present invention.

[0036] Figure 3 This is an exploded perspective view of a multiple-input multiple-output antenna device 10 according to an embodiment of the present invention.

[0037] Figure 4 This is a rear exploded perspective view of a multiple-input multiple-output antenna device 10 according to an embodiment of the present invention.

[0038] Reference Figures 1 to 4 The Massive MIMO antenna apparatus 10 may include a radar panel 110, a board 120, a housing 130, a cooling fin 140, a blowing unit 150, and a back cover 160.

[0039] The radome panel 110 can be arranged facing the ground with one side of the housing 130. Specifically, the radome panel 110 can be arranged facing the ground with one side of the substrate 120 housed in the housing 130.

[0040] The housing 130 can be arranged between the radome panel 110 and the multiple heat sinks 140.

[0041] The interior of the housing 130 can accommodate the substrate 120. Specifically, the housing 130 can accommodate the substrate 120 such that the other side of the substrate 120 faces one side of the housing 130.

[0042] A plurality of ports 132 for signal input / output and power supply may be formed on one side of the housing 130, such as the bottom of the housing 130.

[0043] The substrate 120 may include a plurality of heating elements 122 distributed on at least one side thereof. Furthermore, the substrate 120 may have a width and a length greater than the width. The width of the substrate 120 refers to... Figure 3 As a reference component parallel to the x-axis, the length of substrate 120 refers to the length of the component parallel to the x-axis. Figure 3 The component is parallel to the y-axis and serves as the reference.

[0044] In addition, the plurality of heating elements 122 arranged on one side of the substrate 120 may include RF elements for driving the antenna and other circuit elements for driving the RF elements.

[0045] According to an embodiment of the present invention, the substrate 120 may include a first section A1 having a first heat generation and a second section A2 having a second heat generation greater than the first heat generation, divided along the length direction of the substrate 120. The first heat generation and the second heat generation refer to the total amount of heat generated in each section.

[0046] A technical feature of the multi-input multi-output antenna device 10 according to an embodiment of the present invention is that the substrate 120 is a long rectangle with a length greater than its width, and a plurality of heating elements 122 are arranged on the substrate 120 along the length direction of the substrate 120. A detailed description relating to this will be provided in the following sections. Figure 5 A detailed description will be provided in the following section.

[0047] Refer to Figures 1 to 4 Multiple heat sinks 140 can be arranged on the other side of the housing 130.

[0048] Multiple heat sinks 140 may be arranged along the length of the substrate 120 on the other side of the housing 130. In addition, each heat sink may extend along the width of the substrate 120.

[0049] According to an embodiment of the present invention, the multiple-input multiple-output antenna device 10 extends the heat sink 140 along the width direction of the substrate 120, thereby relatively shortening the path of the air exhausted from the fan of the air supply section 150 to cool the heat sink 140 and then to be discharged from the heat sink 140. This minimizes the problem of reduced overall cooling efficiency caused by the air exhausted from the fan being heated after traveling a long path and then cooling other areas.

[0050] However, the invention is not limited to this; the heat sink 140 may also have a diagonal shape or a 'V' shape. In this case, the characteristic of hot air rising can be utilized to facilitate air exhaust.

[0051] The air supply section 150 may be arranged on the back of the plurality of heat sinks 140 and may include at least one fan for cooling each region of the substrate 120.

[0052] When the air supply section of each region includes multiple fans, these multiple fans can be arranged along the width direction of the substrate 120. Since each region of the substrate 120 is identifiable along the length direction, when multiple fans are arranged along the width direction of the substrate 120, the number of fans can be effectively increased without increasing the size and weight of the antenna.

[0053] Figure 3 and Figure 4The illustration shows multiple fans arranged in a row for each region of the substrate 120, but the invention is not limited thereto. For example, multiple fans arranged in at least two rows may also be arranged for each region of the substrate 120.

[0054] Additionally, a receiving space 134 for accommodating a plurality of heat-generating elements 122 is formed between one side of the radome panel 110 and the substrate 120. Specifically, the receiving space 134 may be formed between one side of the radome panel 110 and the outer casing 130, with the other side of the outer casing 130 facing the substrate 120. Therefore, the space where heat is substantially generated may be the receiving space 134 formed between the radome panel 110 and the outer casing 130. The heat generated in the receiving space 134 may be transferred from one side of the outer casing 130 to the other side of the outer casing 130, such as the heat sink 140.

[0055] The air expelled from the first air supply section 152 and the second air supply section 154 can cool the heat sink 140 that receives heat transferred from the receiving space 134 without flowing into the receiving space 134. Therefore, in the multiple-input multiple-output antenna device 10 according to an embodiment of the present invention, the substantially heat-generating space, such as the receiving space 134, and the space cooled by the air expelled from the first air supply section 152 and the second air supply section 154, such as the other side of the housing 130 to the heat sink 140, can be spatially separated.

[0056] This can lead to the following effects: it simplifies the structure of the antenna device and prevents external foreign matter from flowing into the heat-generating element 122 arranged on the substrate 120, thereby preventing adverse effects on the durability of the heat-generating element 122.

[0057] The back cover 160 can be arranged facing the ground on the other side of the outer casing 130, and multiple fans 1522 and 1524 can be arranged on the back cover 160.

[0058] The rear cover 160 covers at least a portion of the other side of the housing 130 and multiple heat sinks 140. Thus, the rear cover 160 functions as a finger guard to prevent the user from touching the heated heat sinks 140, and also as a sunshade to protect the antenna components from external sunlight. Detailed specifications of the rear cover 160 will be provided later. Figure 7 , Figure 13 and Figure 14 The description is in the middle.

[0059] Additionally, the substrate 120, housing 130, and heat sink 140 can be cooled by a heat dissipating device 20, which consists of an air supply section 150 and a rear cover 160. The heat dissipating device 20 is the remaining component of the MIMO antenna device 10, excluding the substrate 120, housing 130, and heat sink 140. Figure 3 Besides the substrate 120 shown in the figure, antenna circuit substrates with other components, other arrangements, or other shapes can also be used. Related descriptions will follow. Figure 13 and Figure 14 The description is in the middle.

[0060] Figure 5 This is a side cross-sectional view of a multiple-input multiple-output antenna device 10 according to an embodiment of the present invention.

[0061] Reference Figure 5 According to an embodiment of the present invention, the substrate 120 can be divided into multiple regions along its length. Each region of the substrate can be divided based on the amount of heat generated in that region.

[0062] For example, substrate 120 may include a first region A1 having a first heat generation and a second region A2 having a second heat generation greater than the first heat generation, which are divided along the length direction of substrate 120.

[0063] The plurality of heat sinks 140 may include a first cooling fin 142 and a second cooling fin 144 that overlap with the first region A1 and the second region A2 of the substrate 120, respectively. Specifically, the plurality of first cooling fins 142 may be arranged between the first region A1 and the first air supply section 152, and the plurality of second cooling fins 144 may be arranged between the second region A2 and the second air supply section 154.

[0064] Based on the heat generation of the first region A1 and the second region A2, the first heat sink 142 and the second heat sink 144 can be configured with different spacing between the heat sinks 140 and different vertical heights between them. Detailed explanations related to this will be provided later. Figures 8 to 10 The description is in the middle.

[0065] Refer to Figure 5 The air supply unit 150 includes a first blowing unit 152 that overlaps with at least a portion of the first region A1 and a second blowing unit 154 that overlaps with at least a portion of the second region A2.

[0066] The first air supply section 152 is configured to cool at least a portion of the heat generated in the first region A1 and includes at least one first fan 1522. Furthermore, the second air supply section 154 is configured to cool at least a portion of the heat generated in the second region A2 and includes at least one second fan 1542.

[0067] The technical feature of the multiple input multiple output antenna device 10 according to an embodiment of the present invention is that the substrate 120 is divided into regions along the length direction of the substrate 120 according to the heat generation, and a fan is arranged at the corresponding position for the divided regions of the substrate 120.

[0068] Therefore, the multiple input multiple output antenna device 10 according to an embodiment of the present invention has the following effect: temperature control and temperature management can be performed separately for each region of the substrate 120, thereby more effectively reducing the relative temperature difference between the regions of the substrate 120.

[0069] Furthermore, the greater the airflow from the fan, the greater the cooling effect. Based on this, since the second heat dissipation of the second region A2 is greater than the first heat dissipation of the first region A1, the airflow rate from the second air supply section 154 can be set to be greater than the airflow rate from the first air supply section 152. Detailed explanations related to this will be provided in [the relevant section]. Figure 6 The description is in the middle.

[0070] Furthermore, according to an embodiment of the present invention, the technical feature of the multiple input multiple output antenna device 10 is that the substrate 120 is a long rectangle with a length greater than its width, and a plurality of heating elements 122 are arranged on the substrate 120 along the length direction of the substrate 120, thereby allowing a maximum number of air supply sections 150 fans to be arranged on the back side of the substrate 120.

[0071] Furthermore, according to an embodiment of the present invention, the multiple-input multiple-output antenna device 10, by arranging multiple fans at corresponding positions for each region of the substrate 120, has the effect of redundant control over each region of the substrate 120. Related details will be provided later. Figure 11 and Figure 12 The description is in the middle.

[0072] Furthermore, according to an embodiment of the present invention, the multiple-input multiple-output antenna device 10, by arranging multiple fans at corresponding positions in each region of the substrate 120, has the effect of setting the rotational speed of each fan to be slightly less than the maximum rotational speed value of that fan. By reducing the rotational speed of the fans, the noise generated by the fans can be reduced, thereby extending the life of the fans.

[0073] Furthermore, the first region A1 has a first unit heat output obtained by dividing the first heat output by the area of ​​the first region A1, and the second region A2 has a second unit heat output obtained by dividing the second heat output by the area of ​​the second region A2. The value of the second unit heat output can be greater than the value of the first unit heat output. This means that, per unit area, the second region A2 generates more heat than the first region A1.

[0074] At this point, assuming that the first region A1 and the second region A2 have essentially the same area, it can be understood that compared to the first region A1, the second region A2 has a greater number of heating elements 122 arranged in it, or compared to the first region A1, the second region A2 has a greater number of elements that generate relatively more heat.

[0075] Furthermore, the first region A1 may include a first group of heating elements having a first average heat output, and the second region A2 may include a second group of heating elements having a second average heat output greater than the first average heat output. The average heat output of each region is the value obtained by dividing the total heat output of each region by the number of heating elements 122 arranged in each region. Therefore, a region having a higher average heat output means that each element arranged in that region has a generally higher heat output.

[0076] Specifically, the second region A2, which has a higher average heat generation, may be equipped with RF components that generate relatively more heat, such as amplifiers (amps) with TX / RX elements, while the first region A1 may be equipped with RF components that generate relatively less heat, such as FPGAs (Field Programmable Gate Arrays). However, the present invention is not limited to this, and the first region A1 and the second region A2 of the substrate 120 may also be equipped with RF components other than those mentioned above.

[0077] For example, Figure 5 The illustration shows a second region A2 on a substrate 12 where TX / RX components with relatively high heat generation are arranged, and a first region A1 on a substrate 120 where RF components with relatively low heat generation are arranged. However, in some embodiments of the present invention, the substrate 120 where TX / RX components are arranged can also be divided into a first region A1 and a second region A2.

[0078] For example, such as Figure 5 As shown, assuming that TX / RX components are arranged in the first, third, fifth, and seventh regions of the eight regions of the substrate 120, the region where TX / RX components are arranged in the eight regions is the first region A1 of the substrate 120, and the other region where TX / RX components are arranged in the eight regions is the third region A2 of the substrate 120.

[0079] For the multiple-input multiple-output antenna device 10, beamforming is performed by adjusting the phase and amplitude of the signals transmitted and received in multiple TX / RX elements. Furthermore, the phase and amplitude of the signals transmitted and received in the TX / RX elements are temperature-dependent. Therefore, in order to perform beamforming, a calibration process based on the temperature-dependent changes in phase and amplitude in each TX / RX element must be performed beforehand.

[0080] Therefore, the greater the relative temperature difference between the TX / RX components, the greater the computational load on the components performing the correction, such as the FPGA. This leads to an increase in the overall heat generation of the antenna device due to the large amount of heat generated in the FPGA. From this perspective, reducing the relative temperature between the TX / RX components arranged in various regions of the substrate 120 is considered an important technical challenge for both the heat dissipation structure and the function of the antenna device.

[0081] Assuming that TX / RX elements are arranged in both the first region A1 and the second region A2, the multiple input multiple output antenna device 10 according to an embodiment of the present invention cools the first region A1 and the second region A2 according to their heat generation, thereby reducing the relative temperature difference between the first region A1 and the second region A2 to within a preset value, thereby improving the heat dissipation efficiency of the antenna device and improving the function of the antenna device.

[0082] in addition, Figure 5 The illustration shows the substrate 120 divided into eight regions along its length, but the invention is not limited thereto. Therefore, depending on factors such as the number of fans, the arrangement of RF components, and the size of the antenna device, the substrate 120 according to the invention can be divided into other numbers besides eight.

[0083] also, Figure 5 The illustration shows a case where the first region A1 of the substrate 120 is the second region among the eight regions, and the second region A2 of the substrate 120 is the first region among the eight regions, but the present invention is not limited thereto.

[0084] That is, in this specification, the first region A1 and the second region A2 are concepts used to distinguish the relative positions of the substrate 120 based on the heat generation, and the first region A1 and the second region A2 are not limited to, for example Figure 5 The location is shown. Therefore, if the second region A2 generates more heat than the first region A1, then the first region A1 and the second region A2 can also refer to... Figure 5 Different positions as shown.

[0085] also, Figure 5The illustration shows a first region A1 and a second region A2 arranged adjacent to each other, but the invention is not limited thereto. Therefore, the first region A1 and the second region A2 can also be arranged separately rather than adjacent to each other.

[0086] Figure 6 This is an example diagram illustrating how the flow rates of the first air supply section 152 and the second air supply section 154 are adjusted according to an embodiment of the present invention.

[0087] Specifically, Figure 6 (a) illustrates how airflow can be adjusted by the number of fans. Figure 6 (b) illustrates how airflow is adjusted by adjusting the fan's rotational speed. Figure 6 (c) illustrates how airflow can be adjusted by changing the size of the fan.

[0088] Reference Figure 6 In (a), to ensure that the airflow rate from the second air supply section 154 is greater than the airflow rate from the first air supply section 152, the number of second fans 1542 in the second air supply section 154 can be set to be greater than the number of first fans 1522 in the first air supply section 152. To effectively cool each region of the substrate 120, a larger number of fans can be arranged in the second region A2, which generates more heat, compared to the first region A1, which generates less heat.

[0089] For example, two fans are arranged in the first area A1, while three fans are arranged in the second area A2. Assuming that the first fan 1522 and the second fan 1542 have the same specifications, the air supply section 150 generates more airflow as the number of fans increases.

[0090] Reference Figure 6 (b) In order to make the air flow rate discharged from the second air supply section 154 greater than the air flow rate discharged from the first air supply section 152, the rotation speed of the second fan 1542 of the second air supply section 154 can also be set to be greater than the rotation speed of the first fan 1522 of the first air supply section 152.

[0091] Assuming that all other fan specifications and the number of fans are the same except for the fan speed, the fan can generate more airflow as the fan speed increases.

[0092] Reference Figure 6 (c) In order to make the air flow rate from the second air supply section 154 greater than the air flow rate from the first air supply section 152, the size of the second fan 1542 of the second air supply section 154 can also be set to be greater than the size of the first fan 1522 of the first air supply section 152.

[0093] Apart from the size of the fan, such as the size of the fan blades, assuming that other fan specifications and the number of fans are the same, the fan can generate more airflow as the fan size increases.

[0094] According to an embodiment of the present invention, the multiple input multiple output antenna device 10 can divide the substrate 120 into multiple regions based on the heat generation, and set the air supply section 150 corresponding to the region of the substrate 120 with more heat generation to generate more airflow, thereby having the advantage of effectively reducing the relative temperature difference between the regions of the substrate 120.

[0095] Figure 7 This is a block diagram illustrating the operation of the control unit 180 according to an embodiment of the present invention.

[0096] Reference Figure 7 According to an embodiment of the present invention, the multiple input multiple output antenna device 10 or its heat dissipation device 20 may further include a control unit 180.

[0097] The control unit 180 may be arranged on the fan circuit board 170, but the present invention is not limited thereto. For example, the control unit 180 may also be arranged on a substrate 120 on which a heating element 122 is arranged.

[0098] The control unit 180 can be configured to control the operation of each of the multiple fans. For example, the control unit 180 can control the on / off state, rotation speed, rotation direction, and airflow direction of each fan based on information from each region of the substrate 120.

[0099] For example, the control unit 180 may be configured to adjust the airflow rate from the first air supply unit 152 and the airflow rate from the second air supply unit 154 based on the temperature of the first region A1 and the temperature of the second region A2. In this case, the multiple input multiple output antenna device 10 or its heat dissipation device 20 may further include a temperature sensor 710 to sense the temperature of each region.

[0100] The control unit 180 can be configured to adjust the rotational speed of at least one of the first fan 1522 and the second fan 1542 based on the temperature of at least one of the first region A1 and the second region A2.

[0101] For example, when a certain area of ​​the substrate 120 has a temperature exceeding a preset reference temperature value, the fan rotation speed corresponding to that area can be increased; conversely, when a certain area of ​​the substrate 120 has a temperature lower than another preset reference temperature value, the fan rotation speed corresponding to that area can be decreased.

[0102] Alternatively, the control unit 180 may be configured to adjust at least one of the number of first fans 1522 operating in at least one first fan 1522 and the number of second fans 1542 operating in at least one second fan 1542 based on the temperature of at least one of the first regions A1 and the second regions A2.

[0103] For example, when a certain area of ​​the substrate 120 has a temperature exceeding a preset reference temperature value, the number of fans operating in the multiple fans corresponding to that area can be increased; conversely, when a certain area of ​​the substrate 120 has a temperature lower than another preset reference temperature value, the number of fans operating in the multiple fans corresponding to that area can be decreased.

[0104] By adjusting the airflow rate emitted from the first air supply unit 152 and the airflow rate emitted from the second air supply unit 154, the control unit 180 can maintain the temperature difference between the first region A1 and the second region A2 within a preset range.

[0105] Assuming that TX / RX elements are arranged in both the first region A1 and the second region A2, the temperature difference between the first region A1 and the second region A2 is preferably maintained within 15 degrees by the control unit 180.

[0106] The multiple input multiple output antenna device 10 or its heat dissipation device 20 may further include a noise sensor 720 for sensing the magnitude of noise generated by multiple fans.

[0107] In this case, the control unit 180 can be configured to adjust at least one of the rotational speeds of the multiple fans and the number of fans operating among the multiple fans based on the noise value of the fan sensed by the noise sensor 720.

[0108] For example, if the noise generated by a certain fan exceeds the preset reference temperature value, the rotation speed of that fan can be reduced or the number of working fans can be reduced.

[0109] Furthermore, the control unit 180 may further include a first control unit for controlling the operation of the first air supply unit 152 and a second control unit for controlling the operation of the second air supply unit 154. In this case, the first air supply unit 152 and the second air supply unit 154 can be controlled by their respective first and second control units. Therefore, even if a part of the first or second control unit malfunctions, it is possible to prevent the entire fan from stopping operation.

[0110] Alternatively, the control unit 180 may include a main control unit and a secondary control unit. The main control unit controls the operation of the fan under normal conditions, while the secondary control unit assists in controlling the fan's operation when the main control unit malfunctions. Therefore, even if the control unit malfunctions, it can prevent the entire fan from stopping.

[0111] The multiple-input multiple-output antenna device 10 or its heat dissipation device 20 may further include a fanlog storage unit 730.

[0112] The fan log storage unit 730 can be configured to record information related to the rotation number of each fan among a plurality of fans, and the control unit 180 can be configured to control the operation of each fan based on the information related to the rotation number of each fan stored in the fan log storage unit.

[0113] For example, the control unit 180 is configured to stop the operation of a fan or notify the user or administrator that the fan needs to be replaced or maintained when the rotation count of some of the multiple fans exceeds a preset value.

[0114] In addition, the control unit 180 can optimize the operation of the fans based on the information obtained in the initial drive state of multiple fans.

[0115] Specifically, in the initial driving state of multiple fans, the control unit 180 can change at least one of the following conditions: the rotational speed of multiple fans and the number of fans operating among the multiple fans, while simultaneously acquiring the driving data of multiple fans corresponding to each condition.

[0116] Then, the control unit 180 adjusts at least one of the rotational speeds of the multiple fans and the number of fans operating among the multiple fans by using the optimal fan drive data among the multiple fan drive data after the initial drive state of the multiple fans.

[0117] Therefore, the control unit 180 according to an embodiment of the present invention can learn by acquiring field data such as the operating status of the fan, the installation location of the antenna device, and the installation environment of the antenna device. Based on this learning result, it can derive the most suitable and optimized fan operating conditions under various conditions. The multiple-input multiple-output antenna device 10 according to an embodiment of the present invention can achieve more effective heat dissipation by employing these optimized fan operating conditions.

[0118] Furthermore, for example, assuming that the fan circuit board 170 contains all the components such as the control unit 180, temperature sensor 710, noise sensor 720, and fan log storage unit 730, the heat dissipation device 20 can learn on its own without the help of other components, thereby achieving the effect of adaptive fan control.

[0119] Figure 8 This is a rear perspective view of the housing 130 and the heat sink 140 according to an embodiment of the present invention.

[0120] Figure 9This is a longitudinal cross-sectional view of the first heat sink 142 and the second heat sink 144 according to an embodiment of the present invention. Specifically, Figure 9 (a) illustrates along Figure 8 A longitudinal cross-sectional view of the first heat sink 142 cut along the A-A' direction. Figure 9 (b) illustrates the diagram along Figure 8 Longitudinal cross-sectional view of the second heat sink 144 cut in the B-B' direction.

[0121] Figure 10 This is a side cross-sectional view of the first heat sink 142 and the second heat sink 144 according to an embodiment of the present invention. Specifically, Figure 10 It is along Figure 8 A side cross-sectional view of the first heat sink 142 and the second heat sink 144 cut in the C-C' direction.

[0122] Reference Figure 8 Multiple heat sinks 140 may be arranged along the length of the substrate 120 on the other side of the housing 130. In addition, each heat sink may extend along the width of the substrate 120.

[0123] According to an embodiment of the present invention, the multiple-input multiple-output antenna device 10 extends the heat sink 140 along the width direction of the substrate 120, thereby relatively shortening the path of the air exhausted from the fan in the air supply section after cooling the heat sink until it is discharged from the heat sink. This minimizes the problem of reduced overall cooling efficiency when the air exhausted from the fan is heated after traveling a long path and then used to cool another area.

[0124] Alternatively, pulsating heat pipes (PHPs) can be built into the multiple heat sinks 140. This can improve the cooling performance of the heat sinks 140.

[0125] Reference Figure 9 (a) and Figure 9 (b) The first heat sink 142 may have a first average vertical height obtained by dividing the cross-sectional area of ​​the first heat sink 142 by the width of the first heat sink 142, and the second heat sink 144 may have a second average vertical height obtained by dividing the cross-sectional area of ​​the second heat sink 144 by the width of the second heat sink 144. In this case, the value of the second average vertical height may be greater than the value of the first average vertical height.

[0126] For example, in the cross-section of the first heat sink 142, the maximum vertical height is h1 and the width is w1. Furthermore, in the cross-section of the second heat sink 144, the maximum vertical height can be h2 and the width can be w2. In this case, the values ​​of h1 and h2 are the same, and the values ​​of w1 and w2 can be the same.

[0127] However, since the first heat sink 142 includes a recess R, its area may be smaller than that of the second heat sink 144. Therefore, the first average vertical height, obtained by dividing the area of ​​the first heat sink 142 by its width w1, may be smaller than the second average vertical height, obtained by dividing the area of ​​the second heat sink 144 by its width w2. In this case, at least a portion of the first heat sink 142, such as the recess, may have a vertical height smaller than the first average vertical height.

[0128] According to an embodiment of the present invention, the multiple-input multiple-output antenna device 10, by making the average vertical height of the second heat sink 144 greater than the average vertical height of the first heat sink 142, can make the area of ​​the second heat sink 144 larger than the area of ​​the first heat sink 142. Therefore, it has the effect of increasing the overall area of ​​the second heat sink 144 where heat exchange occurs.

[0129] According to an embodiment of the present invention, the multiple input multiple output antenna device 10 arranges a second heat sink 144 with a relatively large cross-sectional area on the region corresponding to the second region A2 with high heat generation, and arranges a first heat sink 142 with a relatively small cross-sectional area on the region corresponding to the first region A1 with low heat generation, thereby achieving the effect of reducing the overall weight of the heat sink 140 while maximizing the heat dissipation effect of the heat sink 140.

[0130] in addition, Figure 9 The illustration shows a case where the first heat sink 142 includes a recessed portion and the second heat sink 144 is flat; however, the invention is not limited thereto. Therefore, if the second average vertical height is greater than the first average vertical height, the first heat sink 142 and the second heat sink 144 may also have the same... Figure 9 The diagram shows cross-sections of other shapes, different from the ones shown.

[0131] Reference Figure 10 The spacing B2 between adjacent second heat sinks 144 can be smaller than the spacing B1 between adjacent first heat sinks 142. That is, the multiple second heat sinks 144 can be arranged more closely than the multiple first heat sinks 142.

[0132] Therefore, the overall area of ​​the multiple second heat sinks 144 can be larger than the overall area of ​​the multiple first heat sinks 142, thereby increasing the overall area for heat exchange on the second heat sinks 144.

[0133] According to an embodiment of the present invention, the multiple input multiple output antenna device 10 arranges the second heat sink 144 corresponding to the second region A2 with high heat generation in a compact manner, and arranges the first heat sink 142 corresponding to the first region A1 with low heat generation in a sparse manner, thereby achieving the effect of reducing the overall weight of the heat sink 140 while maximizing the heat dissipation effect of the heat sink 140.

[0134] Furthermore, the plurality of first heat sinks 142 may have different thicknesses than the plurality of second heat sinks 144. Given the heat generation in the first region A1 and the second region A2, the first heat sinks 142 and the second heat sinks 144 may be provided with different thicknesses.

[0135] For example, in the second region A2, in order to increase the heat exchange area and arrange a greater number of second heat sinks 144, the thickness of the second heat sink 144 can also be set to be less than the thickness of the first heat sink 142.

[0136] Refer again Figure 8 and Figure 10 The air discharged from the first air supply section 152 does not mix with the air discharged from the second air supply section 154 during the cooling of the first region A1, and the air discharged from the second air supply section 154 does not mix with the air discharged from the first air supply section 152 during the cooling of the second region A2.

[0137] The meaning of 'during the cooling of the first region A1 / second region A2' is the period during which the air expelled from each air supply unit reaches and impacts the heat sink 140 corresponding to each region of the substrate 120, from the moment when cooling actually begins until the moment when the air cools the heat sink 140 and is discharged from the heat sink 140.

[0138] In a multiple-input multiple-output antenna device 10 according to an embodiment of the present invention, the air expelled from each fan can flow only in the area of ​​the heat sink 140 corresponding to that fan, and not in the area of ​​the heat sink 140 outside of it.

[0139] Therefore, the multiple input multiple output antenna device 10 may further include a partition wall 146 disposed between a plurality of first heat sinks 142 and a plurality of second heat sinks 144.

[0140] The vertical height of the partition wall 146 can be greater than the vertical height of the multiple first heat sinks 142 and the multiple second heat sinks 144.

[0141] The partition wall 146 can divide the area of ​​the heat sink 140 corresponding to each area of ​​the substrate 120, and in order to prevent the air exhausted from the fan corresponding to each area of ​​the heat sink 140 from mixing with the areas of other heat sinks 140, it plays the role of isolating the air flow.

[0142] According to an embodiment of the present invention, the multiple input multiple output antenna device 10 can more accurately predict the airflow path of each fan by having each fan corresponding to each region of the substrate 120 cool only the region of the heat sink 140 corresponding to it, thereby making it easier to control each fan based on the control unit 180.

[0143] However, the invention is not limited to this, and can also be configured to allow at least a portion of the air exhausted from each fan to flow into other areas of the heat sink 140. For example, the central area of ​​the plurality of heat sinks 140 can be removed or the height of the central area can be set to be lower than that of the other areas, so that the air exhausted from the fan flows into other areas of the heat sink 140 through the central area.

[0144] At this time, when the fan corresponding to a certain area of ​​heat sink 140 fails, cooling can be achieved by allowing the air expelled by the fans corresponding to other areas of heat sink 140 adjacent to that area to flow into the area of ​​heat sink 140 corresponding to the failed fan.

[0145] Additionally, the multiple input multiple output antenna device 10 further includes multiple protrusions (not shown) arranged on the other side of the housing 130 between multiple heat sinks 140 or in the area facing the fan.

[0146] Multiple protrusions can increase the overall area for heat exchange, causing turbulence in the air flowing between the heat sinks 140, thereby improving the efficiency of convection-based heat transfer.

[0147] Figure 11 and Figure 12 This is an example diagram illustrating the redundancy control performed by the control unit 180 according to an embodiment of the present invention.

[0148] Specifically, Figure 11 The diagram illustrates a scenario where redundancy control is achieved through fan rotation speed. Figure 12 The illustration shows a scenario where redundancy control is achieved by changing the number of operating fans.

[0149] Reference Figure 11 and Figure 12 The control unit 180 can be configured to perform redundant control on the first region A1 and the second region A2.

[0150] Specifically, refer to Figure 11 The control unit 180 can be configured to increase the rotational speed of the other operating first fans 1522 when at least one of the multiple first fans 1522 stops working.

[0151] Furthermore, the control unit 180 may be configured to increase the rotational speed of the other operating second fans 1542 when at least one of the plurality of second fans 1542 stops working.

[0152] For example, such as Figure 11 In case (a), when the three fans F1, F2, and F3 are working, as follows: Figure 11 (b) If one of the three fans, F1, fails, the control unit 180 can increase the rotational speed of the remaining two fans, F2 and F3, which are operating normally.

[0153] Or, refer to Figure 12 The control unit 180 can be configured to activate the other first fans 1522 when at least one of the first fans 1522 stops working.

[0154] Furthermore, the control unit 180 may be configured to activate the other second fans 1542 when at least one of the multiple second fans 1542 stops working.

[0155] For example, such as Figure 12 In case (a), the substrate 120 has three fans F1, F2, and F3. Assume that only two of the three fans, F1 and F2, are working, and one fan, F3, is off. Figure 12 (b) When one of the two working fans F1 and F2, F1, fails, the remaining fan F3, which has stopped working, can be put into operation.

[0156] Alternatively, the control unit 180 may be configured to direct the airflow direction of the other operating first fans 1522 toward the stopped first fan 1522 when at least one of the plurality of first fans 1522 stops working, and to direct the airflow direction of the other operating second fans 1542 toward the stopped second fan 1542 when at least one of the plurality of second fans 1542 stops working.

[0157] According to an embodiment of the present invention, the multiple-input multiple-output antenna device 10 divides the substrate 120 into multiple regions and arranges multiple fans corresponding to each region, thereby having the advantage that multiple fans can be arranged in each region. Therefore, the multiple-input multiple-output antenna device 10 according to an embodiment of the present invention includes multiple fans, thereby having the advantage of facilitating redundant control.

[0158] Furthermore, according to an embodiment of the present invention, the control unit 180 performs redundant control on each region of the substrate 120, thereby providing a uniform flow rate similar to that of a normal state even in abnormal conditions such as a partial failure of the fan.

[0159] Figure 13 This is a perspective view of a heat dissipation device 20 according to an embodiment of the present invention.

[0160] Figure 14 This is a rear perspective view of a heat dissipation device 20 according to an embodiment of the present invention.

[0161] Reference Figure 13 and Figure 14 The heat dissipation device 20 may include a rear cover 160 and multiple fans.

[0162] The rear cover 160 covers at least a portion of the other side of the housing 130 and a plurality of heat sinks 140. Thus, the rear cover 160 can act as a finger guard to prevent the user from touching the heated heat sinks 140, and can also act as a sunshade to protect the components of the antenna device from external sunlight.

[0163] Multiple fans can be mounted on the rear cover 160. Therefore, the multiple input multiple output antenna device 10 according to an embodiment of the present invention integrates the components for mounting the multiple fans to the antenna device, the hand guard plate, and the sunshade components through the rear cover 160, thereby having an efficient spatial structure.

[0164] Furthermore, according to an embodiment of the present invention, the multiple input multiple output antenna device 10 has the effect of facilitating the maintenance of multiple fans by arranging multiple fans on the rear cover 160.

[0165] The rear cover 160 may further include a fan circuit board 170 disposed on one side of the rear cover 160. In this case, the fan circuit board 170 may be configured to be powered by a substrate 12 on which a plurality of heating elements 122 are disposed. For example, the fan circuit board 170 is connected to the substrate 120 via a power line (not shown) passing through the housing 130 and receives power from the substrate 120.

[0166] As described above, the fan circuit board 170 may be equipped with a control unit 180, a temperature sensor 710, a noise sensor 720, and a fan log storage unit 730. In this case, the heat dissipation device 20 can learn on its own without the help of other components and can perform adaptive control of the fan.

[0167] However, although Figure 13 and Figure 14 The illustration shows the fan circuit board 170 arranged on the rear cover 160, but the invention is not limited thereto. For example, the fan circuit board 170 may be integrally formed with the substrate 120 on which RF components are arranged, or it may be arranged in other areas within the housing 130.

[0168] Additionally, the rear cover 160 may further include an inlet 162, a metal grille 166, and an outlet 164.

[0169] Inlet 162 may be formed on the rear cover 160 at locations corresponding to the areas where multiple fans are mounted. External gas is introduced into the multiple fans through each inlet 162.

[0170] The iron grate 166 can be arranged on the inlet 162 to prevent external foreign matter from flowing into the fan.

[0171] An exhaust port 164 may be formed on the side of the rear cover 160. Specifically, the exhaust port 164 is formed in an area of ​​the rear cover 160, which is used to allow air exhausted from the fan to cool the heat sink 140 before being discharged.

[0172] Figure 15 yes Figure 2 The diagram of the multiple input multiple output antenna device 10 omits the rear cover 160.

[0173] Reference Figure 15 The multiple input multiple output antenna device 10 may further include a connecting member 190.

[0174] The connecting component 190 can secure the multiple-input multiple-output antenna device 10 and the heat dissipation device to an external support (not shown). The connecting component 190 may include conventional brackets or clamping devices for securing the antenna device, but the invention is not limited thereto.

[0175] The connecting member 190 may include multiple arms 192 for connection to the other side of the housing 130. The connecting member 190 is fixed to the housing 130 rather than the back cover 160, which has the effect of minimizing the load acting on the back cover 160.

[0176] The rear cover 160 may include at least one through hole extending through the rear cover 160. Figure 4 (168) A plurality of arms 192 may pass through at least one through hole 168. At least one of the plurality of fans may be arranged between two of the plurality of arms 192.

[0177] According to an embodiment of the present invention, the multiple input multiple output antenna device 10 can minimize the physical interference between the connecting member 190 and the fans by arranging a portion of a plurality of fans between the two arms 192 of the connecting member 190, thereby maximizing the number of fans arranged on the rear cover 160.

[0178] The above description is merely illustrative of the technical concept of this embodiment. For those skilled in the art, various modifications and variations can be made without departing from the essential characteristics of this embodiment. Therefore, this embodiment is not intended to limit the technical concept but rather to illustrate it, and the scope of the technical concept is not limited by the embodiments described. The scope of protection of this embodiment should be interpreted based on the following claims, and all technical concepts within the equivalent scope should be interpreted as falling within the scope of the claims of this embodiment.

[0179] [Explanation of reference numerals in the attached figures]

[0180] 10: Multiple-input multiple-output antenna device; 110: Antenna radome panel

[0181] 120: Substrate; 122: Heating element

[0182] 130: Casing 140: Heatsink

[0183] 142: First heatsink 144: Second heatsink

[0184] 146: Partition wall; 150: Air supply section

[0185] 152: First air supply section; 154: Second air supply section

[0186] 160: Back cover 162: Inlet

[0187] 164: Discharge outlet; 166: Iron fence

[0188] 170: Fan circuit board; 180: Control unit

[0189] 710: Temperature sensor; 720: Noise sensor

[0190] 730: Fan Log Storage Section 1522: First Fan

[0191] 1542: Second Fan A1: First Area

[0192] A2: Second Area

Claims

1. A multiple-input multiple-output antenna device, characterized in that, include: A substrate having a width and a length greater than the width, and including a plurality of heating elements distributed on at least one side, the substrate including a first region having a first heat generation and a second region having a second heat generation greater than the first heat generation, divided along the length direction of the substrate. A first air supply section is configured to overlap at least a portion of the first region and is used to cool at least a portion of the heat generated in the first region, and includes at least one first fan; A second air supply section, configured to overlap at least a portion of the second region and used to cool at least a portion of the heat generated in the second region, includes at least one second fan. Multiple first heat sinks are arranged between the first region and the first air supply section; as well as Multiple second heat sinks are arranged between the second region and the second air supply section. The plurality of first heat sinks and the plurality of second heat sinks extend along the width direction of the substrate. A partition wall is arranged between the plurality of first heat sinks and the plurality of second heat sinks, and the vertical height of the partition wall is greater than the vertical height of both the plurality of first heat sinks and the plurality of second heat sinks. The air flow rate discharged from the second air supply section is greater than the air flow rate discharged from the first air supply section.

2. The multiple-input multiple-output antenna device according to claim 1, characterized in that, The number of second fans in the second air supply section is greater than the number of first fans in the first air supply section.

3. The multiple-input multiple-output antenna device according to claim 2, characterized in that, The second air supply section includes a plurality of second fans arranged along the width direction of the substrate.

4. The multiple-input multiple-output antenna device according to claim 1, characterized in that, The rotational speed of the second fan in the second air supply section is greater than the rotational speed of the first fan in the first air supply section.

5. The multiple-input multiple-output antenna device according to claim 1, characterized in that, The size of the second fan in the second air supply section is larger than the size of the first fan in the first air supply section.

6. The multiple-input multiple-output antenna device according to claim 1, characterized in that, It further includes a control unit for controlling the air flow rate discharged from the first air supply unit and the air flow rate discharged from the second air supply unit.

7. The multiple-input multiple-output antenna device according to claim 6, characterized in that, The control unit is configured to adjust the rotational speed of at least one of the first fan and the second fan based on the temperature of at least one of the first region and the second region.

8. The multiple-input multiple-output antenna device according to claim 6, characterized in that, The control unit is configured to adjust at least one of the number of first fans operating in the at least one first fan and the number of second fans operating in the at least one second fan, based on the temperature of at least one of the first regions and the second regions.

9. The multiple-input multiple-output antenna device according to claim 6, characterized in that, The control unit is configured to adjust the air flow rate from the first air supply unit and the air flow rate from the second air supply unit to maintain the temperature difference between the first region and the second region within a preset range.

10. The multiple-input multiple-output antenna device according to claim 9, characterized in that, The temperature difference between the first region and the second region is set to be maintained within 15 degrees by the control unit.

11. The multiple-input multiple-output antenna device according to claim 1, characterized in that, The first region has a first unit heat output obtained by dividing the first heat output by the area of ​​the first region, and the second region has a second unit heat output obtained by dividing the second heat output by the area of ​​the second region, wherein the second unit heat output is greater than the first unit heat output.

12. The multiple-input multiple-output antenna device according to claim 1, characterized in that, The first region includes a first group of heating elements having a first average heat output, and the second region includes a second group of heating elements having a second average heat output greater than the first average heat output.

13. The multiple-input multiple-output antenna device according to claim 1, characterized in that, The device further includes an antenna cover panel, which is configured to be arranged facing the ground with at least a portion of the substrate on which the plurality of heating elements are disposed, and a receiving space is formed between the antenna cover panel and the substrate, and air discharged from the first air supply section and the second air supply section does not flow into the receiving space.

14. A multiple-input multiple-output antenna device, characterized in that, include: A substrate having a width and a length greater than the width, and including a plurality of heating elements distributed on at least one side, the substrate including a first region having a first heat generation and a second region having a second heat generation greater than the first heat generation, divided along the length direction of the substrate. The outer casing has one side facing the substrate; A plurality of first heat sinks are arranged overlapping at least a portion of the first region on the other side of the housing and protrude from the other side of the housing; A plurality of second heat sinks are arranged overlapping at least a portion of the second region on the other side of the housing and protrude from the other side of the housing; and a plurality of fans are provided for cooling the plurality of first heat sinks and the plurality of second heat sinks. The plurality of first heat sinks and the plurality of second heat sinks extend along the width direction of the substrate. The first heat sink has a first average vertical height obtained by dividing the cross-sectional area of ​​the first heat sink by the width of the first heat sink, and the second heat sink has a second average vertical height obtained by dividing the cross-sectional area of ​​the second heat sink by the width of the second heat sink. The second average vertical height is greater than the first average vertical height. A partition wall is arranged between the plurality of first heat sinks and the plurality of second heat sinks. The vertical height of the partition wall is greater than the vertical height of both the plurality of first heat sinks and the plurality of second heat sinks. The airflow rate for cooling and discharging the second heat sink is greater than the airflow rate for cooling and discharging the first heat sink.

15. The multiple-input multiple-output antenna device according to claim 14, characterized in that, The spacing between adjacent second heat sinks in the plurality of second heat sinks is smaller than the spacing between adjacent first heat sinks in the plurality of first heat sinks.

16. The multiple-input multiple-output antenna device according to claim 14, characterized in that, At least a portion of the first heat sink includes a region having a vertical height less than the first average vertical height.

17. The multiple-input multiple-output antenna device according to claim 3, characterized in that, It further includes a control unit for controlling the rotational speed of the plurality of first fans and the rotational speed of the plurality of second fans. The control unit is configured to increase the rotational speed of the other operating first fans when at least one of the plurality of first fans stops working, and to increase the rotational speed of the other operating second fans when at least one of the plurality of second fans stops working.

18. A multiple-input multiple-output antenna device, characterized in that, include: A substrate having a width and a length greater than the width, and including a plurality of heating elements distributed on at least one side, the substrate including a first region having a first heat generation and a second region having a second heat generation greater than the first heat generation, divided along the length direction of the substrate. A first air supply section is configured to overlap at least a portion of the first region and is used to cool at least a portion of the heat generated in the first region, and includes a plurality of first fans; A second air supply section is configured to overlap at least a portion of the second region and is used to cool at least a portion of the heat generated in the second region, and includes a plurality of second fans; The control unit is configured to perform redundant control on the first region and the second region. Multiple first heat sinks are arranged between the first region and the first air supply section; as well as Multiple second heat sinks are arranged between the second region and the second air supply section. The plurality of first heat sinks and the plurality of second heat sinks extend along the width direction of the substrate. A partition wall is arranged between the plurality of first heat sinks and the plurality of second heat sinks, and the vertical height of the partition wall is greater than the vertical height of both the plurality of first heat sinks and the plurality of second heat sinks. The air flow rate discharged from the second air supply section is greater than the air flow rate discharged from the first air supply section.

19. The multiple-input multiple-output antenna device according to claim 18, characterized in that, The control unit is configured to increase the rotational speed of the other operating first fans when at least one of the plurality of first fans stops working, and to increase the rotational speed of the other operating second fans when at least one of the plurality of second fans stops working.

20. The multiple-input multiple-output antenna device according to claim 18, characterized in that, The control unit is configured to activate the other first fans when at least one of the plurality of first fans stops working, and to activate the other second fans when at least one of the plurality of second fans stops working.

21. A heat dissipation device, characterized in that, It is used to cool the heat generated by multiple heating elements, which are arranged on one side of a substrate housed in a housing. The substrate includes a first region having a first heat generation capacity and a second region having a second heat generation capacity greater than the first heat generation capacity, divided along the length of the substrate. The heat dissipation device includes: Air supply section: It faces the housing and is arranged along the length direction of the housing. The air supply section includes a first air supply section and a second air supply section. The first air supply section is arranged to overlap with at least a portion of the first region and is used to cool at least a portion of the heat generated in the first region, and includes at least one fan. The second air supply section is arranged to overlap with at least a portion of the second region and is used to cool at least a portion of the heat generated in the second region, and includes at least one fan. Multiple first heat sinks are arranged between the first region and the first air supply section; Multiple second heat sinks are arranged between the second region and the second air supply section, and A rear cover, which covers at least a portion of the housing and the plurality of first heat sinks and the plurality of second heat sinks, wherein the fan is mounted on the rear cover. The plurality of first heat sinks and the plurality of second heat sinks extend along the width direction of the substrate. A partition wall is arranged between the plurality of first heat sinks and the plurality of second heat sinks, and the vertical height of the partition wall is greater than the vertical height of both the plurality of first heat sinks and the plurality of second heat sinks. The air flow rate discharged from the second air supply section is greater than the air flow rate discharged from the first air supply section.

22. The heat dissipation device according to claim 21, characterized in that, It further includes a control unit for controlling the operation of the fan.

23. The heat dissipation device according to claim 22, characterized in that, The system further includes a noise sensor for sensing the magnitude of noise generated by the fan, and the control unit is configured to adjust at least one of the fan's rotational speed and the number of fans operating in the fan based on the noise value sensed by the noise sensor.

24. The heat dissipation device according to claim 22, characterized in that, It further includes a temperature sensor for sensing the temperature of the plurality of heating elements. The control unit is configured to adjust at least one of the fan's rotational speed and the number of fans operating in the fan based on the temperature value sensed by the temperature sensor.

25. The heat dissipation device according to claim 22, characterized in that, It further includes a fan log storage unit for recording information related to the rotational speed of each fan in the fan assembly. The control unit is configured to control the operation of each fan based on information related to the rotation count of each fan stored in the fan log storage unit.

26. The heat dissipation device according to claim 22, characterized in that, It further includes a fan circuit board disposed on one side of the rear cover, and the control unit disposed on the fan circuit board.

27. The heat dissipation device according to claim 22, characterized in that, The fan circuit board is configured to receive power supplied from a first circuit board on which the plurality of heating elements are arranged.

28. The heat dissipation device according to claim 22, characterized in that, The control unit is configured to, in the initial driving state of the fan, simultaneously acquire multiple fan drive data corresponding to each condition by changing at least one of the fan's rotational speed and the number of operating fans in the fan. After the initial drive state of the fan, at least one of the fan rotation speed and the number of fans operating in the fan is adjusted using the optimal fan drive data among the plurality of fan drive data.

29. The heat dissipation device according to claim 21, characterized in that, The device further includes a connecting component for securing the heat dissipation device to an external support column, and includes a plurality of arms for connecting to the other side of the housing. The rear cover includes at least one through hole through the rear cover, the plurality of arms passing through the at least one through hole, and the at least one fan disposed between two of the plurality of arms.

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