CN221081889U

CN221081889U - Radio frequency unit

Info

Publication number: CN221081889U
Application number: CN202323047976.8U
Authority: CN
Inventors: 陈国强; 陈茄; 魏旻
Original assignee: Sichuan Hengwan Technology Co Ltd
Current assignee: Sichuan Hengwan Technology Co Ltd
Priority date: 2023-11-10
Filing date: 2023-11-10
Publication date: 2024-06-04
Anticipated expiration: 2033-11-10

Abstract

The utility model provides a radio frequency unit, which comprises an RRU single board, a heat dissipation shell and a filter, wherein the heat dissipation shell and the filter are arranged on two sides of the RRU single board; the RRU single board comprises a power amplification module, wherein a main component of the power amplification module faces one side of a heat dissipation shell, and a heat dissipation copper block of the power amplification module is arranged at one side facing a filter; a heat transfer module is arranged on one side of the filter facing the RRU single board, and the position of the heat transfer module corresponds to the position of a heat dissipation copper block of the RRU single board; the side of the heat dissipation shell facing the RRU veneer is provided with a shielding isolation rib for replacing a shielding cover to protect each module of the veneer to work independently; and the radiating shell, the RRU single board and the filter are assembled in sequence to form the radio frequency unit. The utility model can satisfy the basic functions of RRU and heat dissipation requirement, and simultaneously, the utility model cancels the original shielding cover and is integrated in the heat dissipation shell, the RRU volume can be reduced by 2-4L, and the weight of the whole machine and the production and manufacturing cost are reduced.

Description

Radio frequency unit

Technical Field

The utility model relates to the field of radio frequency, in particular to a radio frequency unit.

Background

The RRU system structure generally comprises a heat dissipation shell 1, an RRU single board 2, a shielding cover 3 and a filter 4, wherein the 4 parts are formed. As shown in the explosion diagram of the conventional RRU structure, fig. 1 shows that the RRU board 2 is installed in the heat dissipation housing 1, and the heat dissipation housing 1 is mainly used for supporting and protecting the RRU board 2, and meanwhile, the heat dissipation housing 1 needs to absorb the heat of the PCB digital module 201 and the power amplifier module 203, so that the heat is quickly transferred to the outdoor environment, and the temperature of PCB components is ensured to be within a specified range; the shielding cover 3 is arranged on the other side of the PCB, and the shielding cover 3 protects each module of the single board to work independently and signals are not interfered with each other. The filter 4 filters the clutter signals to ensure that the RRU receives and transmits the signal index to be normal. However, the conventional RRU has larger and larger transmission power and bandwidth, which results in larger volume and weight of the RRU, and causes a great deal of inconvenience in manufacturing and installation, resulting in a great cost pressure.

Disclosure of utility model

Aiming at the problems in the prior art, the radio frequency unit is provided, the heat dissipation shell and the shielding cover are integrated, the original shielding cover is canceled, and meanwhile, part of heat of the power amplifier module is conducted out through the filter. The structure reduces the number of RRU module units, reduces the weight and the volume of RRU, and has the advantages of simpler whole machine, contribution to quick production and reduction of manufacturing cost.

The technical scheme adopted by the utility model is as follows: the radio frequency unit comprises an RRU single board, a heat dissipation shell and a filter, wherein the heat dissipation shell and the filter are arranged on two sides of the RRU single board; the RRU single board comprises a power amplification module, wherein a main component of the power amplification module faces one side of a heat dissipation shell, and a heat dissipation copper block of the power amplification module is arranged at one side facing a filter; a heat transfer module is arranged on one side of the filter facing the RRU single board, and the position of the heat transfer module corresponds to the position of a heat dissipation copper block of the RRU single board; and the radiating shell, the RRU single board and the filter are assembled in sequence to form the radio frequency unit.

As a preferable scheme, a shielding spacer is arranged on one side of the heat dissipation shell facing the RRU single board, and is used for protecting each module of the single board to work independently.

As a preferred aspect, the heat transfer module is a compressible thermally conductive interface.

As a preferred aspect, the compressible thermally conductive interface is a thermally conductive gasket.

As a preferred aspect, the compressible thermally conductive interface is a thermally conductive gel.

As a preferred scheme, the number and shape of the heat transfer modules are adapted to the heat dissipation copper blocks on the RRU board.

As a preferred scheme, the heat transfer module comprises a heat radiation boss, wherein heat radiation grooves are formed in the heat radiation boss, and the number and the shape of the heat radiation grooves are matched with those of the heat radiation copper blocks on the RRU single board.

As a preferable scheme, a side of the filter, which is away from the RRU board, is further provided with heat dissipation teeth, so as to increase heat dissipation capability.

Compared with the prior art, the utility model has the beneficial effects that: the RRU volume can be reduced by 2-4L while the basic functions and the heat dissipation requirements of the RRU are met, and the weight of the whole machine and the production and manufacturing cost are reduced.

Drawings

Fig. 1 is a schematic diagram of an RRU module in the prior art.

Fig. 2 is a schematic diagram of an rf unit structure according to an embodiment of the utility model.

Fig. 3 is a schematic diagram of an rf unit structure according to another embodiment of the utility model.

Reference numerals: 1-heat dissipation shell, 2-RRU single board, 3-shielding cover, 4-filter, 5-heat conduction interface, 201-digital module, 202-heat dissipation copper block, 203-power amplifier module, 401-heat dissipation tooth piece, 402-heat dissipation boss, 403-heat dissipation groove.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar modules or modules having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application. On the contrary, the embodiments of the application include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.

In order to reduce the volume and manufacturing cost of the RRU, the utility model eliminates the shielding cover 3 by integrating the heat dissipation shell 1 and the shielding cover 3 in the RRU. In addition, as the heat of the RRU single-board power amplification module 203 is conducted to the filter 5, the heat carried by the heat dissipation shell 1 is reduced, and the tooth height of the heat dissipation shell 1 can be reduced by 20-40mm; meanwhile, in order to receive the heat of the power amplifier module 203, the local structure of the filter 4 is improved. The specific scheme is as follows:

The radio frequency unit comprises an RRU single board 2, a heat dissipation shell 1 and a filter 4, wherein the heat dissipation shell 1 and the filter 4 are arranged on two sides of the RRU single board 2; the RRU single board 2 comprises a power amplifier module 203, wherein main components of the power amplifier module 203 face one side of the heat dissipation shell 1, and a heat dissipation copper block 202 of the power amplifier module 203 is arranged on one side facing the filter 4; a heat transfer module is further arranged on one side of the filter 4 facing the RRU single board 2, and the position of the heat transfer module corresponds to the position of the heat dissipation copper block 202 of the RRU single board 2; the radiating shell 1, the RRU single board 2 and the filter 4 are assembled in sequence to form a radio frequency unit. And one side of the heat dissipation shell 1 facing the RRU single board 2 is provided with shielding and isolating ribs for protecting each module of the single board to work independently.

Example 1

Referring to fig. 2, the radio frequency unit includes an RRU board 2, a heat dissipation housing 1, and a filter 4, where the heat dissipation housing 1 and the filter 4 are respectively disposed at two sides of the RRU board 2.

The RRU board 2 is provided with a power amplifier module 203, where the power amplifier module 203 includes two parts, i.e. a main component and a heat dissipation copper block 202 (not shown in fig. 2), the main component is disposed on a side facing the heat dissipation casing 1, and the heat dissipation copper block 202 is disposed on a side facing the filter 4. The heat dissipation is assisted by the filter 4.

In order to reduce the number of modules, in this embodiment, the shielding cover 3 is omitted, and a shielding spacer is disposed on a side of the heat dissipation housing 1 facing the RRU board 2, so that the shielding function of the original shielding cover 3 is transferred to the heat dissipation housing 1, and each module of the board is ensured to work independently, and signals are not interfered with each other.

In order to increase the ability of the filter 4 to assist in heat dissipation, in this embodiment, a heat transfer module is disposed on the side of the filter 4 facing the RRU board 2. In one embodiment, the heat transfer module is a compressible thermally conductive interface 5. In some preferred embodiments, the compressible heat-conducting interface 5 is a heat-conducting pad and a heat-conducting gel, and is not limited in material, shape and size to match the heat-dissipating copper block 202. In the rf unit structure shown in fig. 2, 4 rectangular compressible heat conductive interfaces 5 are provided on the filter 4 to match with the heat dissipation copper block 202. When the filter 4 is assembled with the heat dissipation housing 1, the 4 heat conduction interfaces 5 are compressed, and heat generated by the power amplification module 203 is conducted to the filter 4 through the heat conduction interfaces 5.

Meanwhile, as the heat of the power amplification module 203 is conducted to one side of the filter 4, the heat carried by the heat dissipation shell 1 is correspondingly reduced, and the height of the heat dissipation teeth 401 of the heat dissipation shell 1 can be reduced by 20-40mm, so that the volume of the whole RRU is greatly reduced, and the weight is reduced.

Example 2

Referring to fig. 3, the radio frequency unit includes an RRU board 2, a heat dissipation housing 1, and a filter 4, where the heat dissipation housing 1 and the filter 4 are respectively disposed at two sides of the RRU board 2.

The RRU board 2 is provided with a power amplifier module 203, where the power amplifier module 203 includes two parts, i.e. a main component and a heat dissipation copper block 202 (not shown in fig. 3), the main component is disposed on a side facing the heat dissipation casing 1, and the heat dissipation copper block 202 is disposed on a side facing the filter 4. The heat dissipation is assisted by the filter 4.

In order to increase the ability of the filter 4 to assist in heat dissipation, in this embodiment, a heat transfer module is disposed on the side of the filter 4 facing the RRU board 2. In one embodiment, the heat transfer module includes a heat dissipating boss 402, and a heat dissipating groove 403 is formed on the heat dissipating boss 402, where the heat dissipating boss 402 is shaped and sized to match the power amplifier module 203, and the number, shape, and size of the heat dissipating grooves 403 match the heat dissipating copper block 202.

In order to further enhance the auxiliary heat dissipation capability of the filter 4, a heat dissipation tooth 401 is disposed on a side of the filter 4 facing away from the RRU board 2, and the structure and shape of the heat dissipation tooth 401 are not limited. When the filter 4 is assembled with the heat dissipation housing 1, heat generated by the power amplification module 203 is quickly conducted to the filter 4 and the heat dissipation fins 401. Meanwhile, as the heat of the power amplification module 203 is conducted to one side of the filter 4, the heat carried by the heat dissipation shell 1 is reduced, the height of the heat dissipation teeth 401 of the heat dissipation shell 1 can be reduced by 20-40mm, the volume of the whole RRU is greatly reduced, and the weight is reduced.

The novel radio frequency unit provided by the utility model reduces the number of RRU module units, reduces the weight and the volume of RRU, has simpler whole machine, is beneficial to quick production and reduces the manufacturing cost.

It should be noted that, in the description of the embodiments of the present utility model, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in detail by those skilled in the art; the accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

While embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.

Claims

1. The radio frequency unit is characterized by comprising an RRU single board, a heat dissipation shell and a filter, wherein the heat dissipation shell and the filter are arranged on two sides of the RRU single board; the RRU single board comprises a power amplification module, wherein a main component of the power amplification module faces one side of a heat dissipation shell, and a heat dissipation copper block of the power amplification module is arranged at one side facing a filter; a heat transfer module is arranged on one side of the filter facing the RRU single board, and the position of the heat transfer module corresponds to the position of a heat dissipation copper block of the RRU single board; a shielding spacer bar is arranged on one side of the heat dissipation shell facing the RRU veneer and used for replacing a shielding cover to protect each module of the veneer to work independently; and the radiating shell, the RRU single board and the filter are assembled in sequence to form the radio frequency unit.

2. The radio frequency unit of claim 1, wherein the heat transfer module is a compressible thermally conductive interface.

3. The radio frequency unit of claim 2, wherein the compressible thermally conductive interface is a thermally conductive gasket.

4. The radio frequency unit of claim 2, wherein the compressible thermally conductive interface is a thermally conductive gel.

5. The radio frequency unit of claim 1, wherein the number and shape of the heat transfer modules are adapted to a heat dissipating copper block on the RRU board.

6. The radio frequency unit according to claim 1, wherein the heat transfer module comprises a heat dissipating boss, wherein heat dissipating grooves are formed in the heat dissipating boss, and the number and shape of the heat dissipating grooves are adapted to heat dissipating copper blocks on the RRU board.

7. The radio frequency unit according to claim 6, wherein a side of the filter facing away from the RRU board is further provided with heat dissipating teeth for increasing heat dissipating capability.