CN116745990A - Radio frequency module for antenna, radio frequency module assembly and antenna device comprising radio frequency module assembly - Google Patents
Radio frequency module for antenna, radio frequency module assembly and antenna device comprising radio frequency module assembly Download PDFInfo
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- CN116745990A CN116745990A CN202180070018.7A CN202180070018A CN116745990A CN 116745990 A CN116745990 A CN 116745990A CN 202180070018 A CN202180070018 A CN 202180070018A CN 116745990 A CN116745990 A CN 116745990A
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Abstract
The present invention relates to a Radio Frequency (RF) module for an antenna, a Radio Frequency (RF) module assembly, and an antenna device including the assembly, and in particular, the Radio Frequency (RF) module for an antenna includes: a Radio Frequency (RF) filter; a radiating device module disposed at one side of the Radio Frequency (RF) filter; and an amplifying part substrate disposed at the other side of the Radio Frequency (RF) filter and mounted with an analog amplifying device. A plurality of the Radio Frequency (RF) modules for antennas are provided to constitute a Radio Frequency (RF) module assembly, including the Radio Frequency (RF) module assembly and an antenna housing to form an antenna device. Accordingly, the antenna housing for blocking heat dissipation to the front of the antenna is not required, and heat generated from the heat generating device of the antenna device is spatially separated, so that heat dissipation can be dispersed to the front and rear of the antenna device, and therefore, the effect of greatly improving heat dissipation performance is achieved.
Description
Technical Field
The present invention relates to a Radio Frequency (RF) MODULE for an antenna, a Radio Frequency (RF) MODULE ASSEMBLY, and an antenna device (RF MODULE ASSEMBLY AN D AN ANTENNA APPARATUS INCLUDING THE SAME) including the same, and more particularly, to a Radio Frequency (RF) MODULE for an antenna, a Radio Frequency (RF) MODULE ASSEMBLY, and an antenna device including the same, which do not require a radome (radiome) of a conventional antenna device, and are provided in such a manner that a radiation device MODULE and a Radio Frequency (RF) device are exposed to the outside air in front of an antenna housing, thereby improving heat dissipation performance and realizing slim manufacturing and reducing manufacturing costs of products.
Background
Base station antennas including repeaters used in mobile communication systems have various forms and structures, and a plurality of radiation devices are appropriately provided on at least one reflection plate standing in a normal longitudinal direction.
Recently, research is actively being conducted to achieve miniaturization, light weight, and low cost structure while satisfying high performance requirements of antennas based on multiple input/output (Multiple Input Multiple Output, MIMO). In particular, when an antenna device for realizing a linearly polarized or circularly polarized patch type radiation device is applied, a method of plating gold on a radiation device formed of a dielectric substrate of plastic or ceramic material and bonding on a Printed Circuit Board (PCB) or the like by soldering is generally widely used.
Fig. 1 is an exploded perspective view showing one example of an antenna device according to the related art.
As shown in fig. 1, in the antenna device 1 according to the related art, a plurality of radiation devices 35 are output in a desired direction, arranged so as to be exposed to the front surface side of the antenna housing body 10 as a beam output direction to facilitate beam forming, and in order to protect it from the external environment, a radome (radome) 50 is mounted on the front end portion of the antenna housing body 10 via the plurality of radiation devices 35.
In more detail, the antenna device 1 according to the related art includes: an antenna case body 10 having a thin rectangular parallelepiped case shape with an opening front surface, and a plurality of heat radiating fins 11 integrally formed on a rear surface; a main board 20 laminated on a rear surface provided in the interior of the antenna housing body 10; and an antenna board 30 laminated on a front surface provided in the interior of the antenna housing body 10.
The front surface of the antenna board 30 is mounted with a patch-type radiation device or a dipole-type radiation device 35, and the front surface of the antenna housing body 10 may be provided with a radome 50 to protect the internal components from the outside while radiation from the radiation device 35 can be smoothly achieved.
However, in one example 1 of the antenna device according to the related art, the front portion of the antenna housing body 10 is shielded by the radome 50, and the radome 50 itself functions as a factor that hinders the front heat radiation of the antenna device. In addition, the radiation device 35 is also designed to perform only transmission/reception of a Radio Frequency (RF) signal, and heat generated by the radiation device 35 cannot be released forward. Therefore, the heat generated by the high heat generating device inside the antenna housing body 10 can only be uniformly released to the rear of the antenna housing body 10, and thus there is a problem that the heat dissipation efficiency is greatly reduced, and in order to solve these problems, there is an increasing demand for designing a new heat dissipation structure.
Also, according to one example 1 of the antenna device of the related art, it is actually difficult to realize an ultra-thin-sized base station required for an in-building (in-building) or 5G shadow area due to the volume of the radome 50 and the volume occupied by the structure in which the radiation device 35 is disposed spaced apart from the front surface of the antenna board 30.
Disclosure of Invention
Technical problem
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a Radio Frequency (RF) module for an antenna, a Radio Frequency (RF) module assembly for an antenna, and an antenna device including the same, which are capable of achieving scattered heat dissipation to the front and rear of an antenna housing by removing a radome and disposing the antenna RF module outside the antenna housing so as to be exposed to the outside air, and thereby being capable of greatly improving heat dissipation performance.
Further, another object of the present invention is to provide a Radio Frequency (RF) module for an antenna including a reflector for stably protecting a Radio Frequency (RF) filter inside, performing a grounding function between a radiating device and the Radio Frequency (RF) filter, and easily radiating heat generated from the Radio Frequency (RF) filter side to the outside while grounding the radiating device (GND), a Radio Frequency (RF) module assembly, and an antenna device including the assembly.
The technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned can be clearly understood by those skilled in the art from the following description.
Solution to the problem
In one embodiment of a Radio Frequency (RF) module for an antenna according to the present invention, there is provided a Radio Frequency (RF) module for an antenna including an analog Radio Frequency (RF) part including: a Radio Frequency (RF) filter; a radiating device module disposed at one side of the Radio Frequency (RF) filter; and an amplifying part substrate provided on the other side of the Radio Frequency (RF) filter and having an analog amplifying device mounted thereon, the Radio Frequency (RF) module for the antenna being provided so as to be exposed to a front external air defined in front of a front surface of an antenna housing, heat generated in the Radio Frequency (RF) filter and heat generated from the analog amplifying device being radiated in different directions in the front external air.
Wherein the amplifying part substrate may be electrically connected to a main board disposed in the inner space of the antenna housing.
And, the antenna housing may include: a rear housing forming an inner space provided with a main board; and a front case provided to cover a front of the rear case and separate the internal space from the front outside air, the amplifying part substrate being detachably coupled to the main board with the front case as a medium.
The front case may be used as a reference for radiating heat generated from the antenna Radio Frequency (RF) module provided at a front portion to the front outside air, the front outside air may be defined as a front of a front surface of the front case, the front case may be used as a reference for radiating heat generated from the main board provided at a rear portion to at least the front outside air or the rear outside air of the front case, and the rear outside air may be defined as a rear of a rear surface of the rear case.
And, the Radio Frequency (RF) filter may include a filter body forming predetermined spaces at one side and the other side in a width direction, respectively, and the amplifying part substrate may be disposed in any one of the spaces, and may be coupled to a main board disposed in an inner space of the antenna housing in a socket pin coupling manner to be electrically connected.
And, the Radio Frequency (RF) filter may further include a filter heat radiation panel that radiates heat generated from the amplifying part substrate from an open space of the filter body to an outside of the filter body in a thermally conductive manner while shielding the space, and the filter heat radiation panel may be in surface thermal contact with the amplifying part substrate such that the heat generated from the amplifying part substrate is radiated through a filter heat radiation fin integrally formed on an outer side surface.
And, the Radio Frequency (RF) filter may further include a Heat transfer medium disposed between the filter radiating panel and the amplifying substrate to collect and transfer Heat generated from the amplifying substrate to the filter radiating panel, and the Heat transfer medium may be formed of a Vapor chamber (Vapor chamber) or a Heat pipe (Heat-pipe) configured to transfer Heat through a phase change of a refrigerant flowing inside.
The amplifying unit substrate may be provided with at least one internal socket for coupling a socket pin to a main board provided in an internal space of the antenna housing, and at least one of a Power Amplifying (PA) device and a Low Noise Amplifying (LNA) device may be mounted as the analog amplifying device.
And, the radiation device module may be configured to generate one of the dual polarizations.
And, the radiation device module may include: the module cover of the radiation device is longer up and down and is respectively arranged at the antenna setting part; a printed circuit board for a radiation device, which is arranged on the back surface of the radiation device module cover in a close contact manner, and is printed with a patch antenna circuit part and a feeder line for generating at least one polarization of the dual polarization; and a radiation guide formed of a conductive metal material and electrically connected to the patch antenna circuit portion of the radiation device printed circuit board.
The radiation guide guides the direction of the radiation beam in all directions, and heat generated from the Radio Frequency (RF) filter located at the rear of the printed circuit board for the radiation device is transferred to the front by heat conduction.
The radiation guide may be made of a thermally conductive material capable of conducting heat.
A through hole may be formed in one side surface of the radiation device module cover, and the radiation guide may be coupled so as to be exposed to the outside air of the front surface of the radiation device module cover, and may be electrically connected to the patch antenna circuit portion through the through hole.
The radiation device module cover may be injection molded, and a guide fixing portion that is molded with a rear surface of the radiation guide may be provided on one side surface of the radiation device module cover, at least one guide fixing protrusion that is capable of being coupled to the radiation guide may be formed to protrude forward in the guide fixing portion, the radiation guide may be press-fitted and fixed in at least one guide fixing groove, and the guide fixing groove may be recessed in a position of the rear surface corresponding to the at least one guide fixing protrusion.
And, the radiation device module cover may be injection-molded, and at least one substrate fixing hole for fastening by a bolt with a fixing bolt between the radiation device and the printed circuit substrate is formed therethrough.
And, the radiation device module cover may be injection-molded, and at least one reinforcing rib may be integrally formed at one side of the radiation device module cover.
And, the amplifying part substrate may be coupled to a main board with a front case as a mediated socket pin, the front case being provided in such a manner as to divide between a front of the main board in which a rear case of the main board is provided in the antenna case and a rear of the Radio Frequency (RF) filter for blocking a flow of heat or external foreign matter at the antenna case side in which the main board is provided.
When the amplifying part substrate is provided to be coupled to the main board socket pin, at least one through slit for coupling the socket pin may be formed to penetrate forward and backward in the front case.
Further, a foreign matter inflow prevention ring for blocking inflow of external foreign matters may be inserted into the at least one through slit.
An antenna Radio Frequency (RF) module assembly according to one embodiment of the present invention includes an antenna Radio Frequency (RF) module including an analog Radio Frequency (RF) component including: a plurality of Radio Frequency (RF) filters; a plurality of radiating device modules disposed on one side of each of the plurality of Radio Frequency (RF) filters; and a plurality of amplifying substrates provided on the other side of each of the plurality of Radio Frequency (RF) filters, and having an analog amplifying device mounted thereon, the Radio Frequency (RF) module for an antenna being provided so as to be exposed to a front external air defined as a front of a front surface of an antenna housing, heat generated from the Radio Frequency (RF) filters and heat generated from the analog amplifying device being radiated in different directions in the front external air.
An antenna device according to an embodiment of the present invention may include: a main board, at least one digital device is installed on the front surface or the rear surface; a case-like antenna housing, a front opening being formed so as to set the main board; and a Radio Frequency (RF) module assembly connected to the main board by an electrical signal, the Radio Frequency (RF) module assembly may include an antenna-use Radio Frequency (RF) module, the antenna-use Radio Frequency (RF) module may include an analog Radio Frequency (RF) part, and the analog Radio Frequency (RF) part may include: a plurality of Radio Frequency (RF) filters; a plurality of radiating device modules disposed on one side of each of the plurality of Radio Frequency (RF) filters; and a plurality of amplifying substrates provided on the other side of each of the plurality of Radio Frequency (RF) filters, and mounted with an analog amplifying device, the Radio Frequency (RF) module for an antenna being capable of being provided in such a manner as to be exposed to a front external air defined in front of a front surface of an antenna housing, heat generated in the Radio Frequency (RF) filters and heat generated from the analog amplifying device being heat-dissipated in different directions in the front external air.
ADVANTAGEOUS EFFECTS OF INVENTION
According to an embodiment of a Radio Frequency (RF) module for an antenna, a Radio Frequency (RF) module assembly, and an antenna device including the same of the present invention, various effects as described below can be achieved.
First, heat generated from a heat generating device of an antenna device is spatially separated, and thus, dispersed heat dissipation to the front and rear sides of the antenna device can be achieved, thereby having an effect of greatly improving heat dissipation performance.
Second, there is no need for a radome that impedes heat dissipation to the front of the antenna, and thus there is an effect of greatly reducing the manufacturing cost of the product.
Third, a Radio Frequency (RF) related amplifying device, which has been conventionally mounted on a conventional main board side, is configured as a Radio Frequency (RF) module together with a Radio Frequency (RF) filter and is disposed outside an antenna housing, thereby having an effect of greatly improving the overall heat dissipation performance of the antenna device.
Fourth, a Radio Frequency (RF) -related amplifying device is separated from a main Board, thereby greatly reducing the number of layers of the main Board as a Multi-Layer Board, to have an advantage of reducing the manufacturing cost of the main Board.
Fifth, since the Radio Frequency (RF) component having the frequency dependency (Frequency Dependence) is configured as a Radio Frequency (RF) module and is detachably attached to the antenna housing, only the corresponding antenna Radio Frequency (RF) module is replaced when a failure or breakage occurs in the individual Radio Frequency (RF) components configuring the antenna device, thereby facilitating maintenance and repair of the antenna device.
Sixth, since the antenna device can realize scattered heat dissipation, the length and volume of the heat sink integrally formed on the rear surface of the antenna housing can be reduced, thereby having the effect of a slim design of the product as a whole.
Seventh, since radiation guides for performing the radiation function of electromagnetic waves in the radiation device module can radiate heat as a medium, the radiation area of the front surface of the antenna device can be maximized.
The effects of the present invention are not limited to the effects set forth above, and other effects not set forth can be clearly understood by those skilled in the art from the scope of the claimed invention.
Drawings
Fig. 1 is an exploded perspective view showing one example of an antenna device according to the related art.
Fig. 2 is a front perspective view and a rear perspective view illustrating an antenna device according to an embodiment of the present invention.
Fig. 3a and 3b are a front partial exploded perspective view and a rear partial exploded perspective view of fig. 2.
Fig. 4 is a cross-sectional view taken along the line A-A of fig. 2 and a partially enlarged view thereof.
Fig. 5 is a partially cut-away perspective view and a partially enlarged view thereof taken along line B-B of fig. 2.
Fig. 6 is a perspective view showing the reflector in the configuration of fig. 2.
Fig. 7 is a perspective view showing a state in which a main board is provided with respect to the rear case in the configuration of fig. 2.
Fig. 8 is an exploded perspective view showing a configuration in which a Radio Frequency (RF) module is provided with respect to the main board in the configuration of fig. 2.
Fig. 9 is a perspective view showing a state in which the filter body is separated from the rear case in the setting process of fig. 8.
Fig. 10 is a perspective view illustrating a Radio Frequency (RF) module in the configuration of fig. 8.
Fig. 11 is a sectional view taken along line C-C of fig. 10, and is a projection cutaway perspective view of the internal form partial projection.
Fig. 12a and 12b are exploded perspective views illustrating a Radio Frequency (RF) module of fig. 10.
Fig. 13 is a detailed view of an amplifying section substrate in the configuration of the Radio Frequency (RF) module of fig. 10.
Fig. 14 is a cut-away perspective view showing a bonding state of the amplifying part substrate to the main board.
Fig. 15 is an exploded perspective view showing an assembled form of a Radio Frequency (RF) module with respect to a main board in the configuration of fig. 3.
Fig. 16 is an exploded perspective view showing an assembled state of the radiation device module with respect to the reflector in the configuration of fig. 3.
Description of the reference numerals
100: antenna device 105: antenna shell
110: rear housing 110S: interior space
111: rear heat sink 120: main board
125: outer plug portion 128a: first heat-generating device
128b: the second heat generating device 130: front shell
140: a Radio Frequency (RF) filter 141: filter main body
142a: bolt through hole 143: partition board
146: amplification section substrate 146': internally inserted opening
146a-1, 146a-2: power Amplifying (PA) device
146c: low Noise Amplifying (LNA) device
147: fixing boss 148: heat radiation panel
149a: bolt fixing hole 149b: bolt through hole
150: reflector 151: antenna arrangement part
155: a plurality of heat dissipation holes 157: boss through hole
160: the radiation device module 161: module cover of radiation device
162: printed circuit board 163a: patch antenna circuit part
163b: a feeder 165: guiding device for radiation
166: reinforcing ribs 167: guide fixing part
168: guide fixing protrusion 200: radio Frequency (RF) module
500: outside mounting part
Detailed Description
Hereinafter, a Radio Frequency (RF) module for an antenna, a Radio Frequency (RF) module assembly, and an antenna device including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
When reference is made to a reference numeral in a component in each drawing, it is to be noted that the same reference numeral is given as much as possible to the same component even though it is referenced in a different drawing. In addition, in describing the embodiments of the present invention, if a specific description of related known structures or functions is considered to interfere with understanding of the embodiments of the present invention, a detailed description thereof will be omitted.
In describing components of embodiments of the present application, terms of first, second, A, B, (a), (b), and the like may be used. Such terms are used to distinguish one element from another element, and the nature, order, sequence, etc. of the corresponding elements are not limited by the terms. Also, unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. Terms commonly used, such as terms defined in dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In the present application, the technical idea is that a radome (radome) is not necessarily provided in a conventional antenna device, but a Radio Frequency (RF) related amplifying device conventionally mounted in a main board inside an antenna housing is configured as a Radio Frequency (RF) module together with a Radio Frequency (RF) filter to spatially separate heat generated from various heat generating devices of the antenna device. Hereinafter, a Radio Frequency (RF) module for an antenna, a Radio Frequency (RF) module assembly, and an antenna device including the same will be described based on one embodiment shown in the drawings.
Fig. 2 is a front perspective view (a) and a rear perspective view (B) illustrating an antenna device according to an embodiment of the present invention, fig. 3a and 3B are a front partially exploded perspective view and a rear partially exploded perspective view of fig. 2, fig. 4 is a cross-sectional view taken along A-A line of fig. 2 and a partially enlarged view thereof, fig. 5 is a partially cut-away perspective view taken along B-B line of fig. 2 and a partially enlarged view thereof, and fig. 6 is a perspective view illustrating a reflector in the configuration of fig. 2.
As shown in fig. 2 to 5, the antenna device 100 according to one embodiment of the present invention includes an antenna housing 105 forming an external appearance of the antenna device. The antenna housing 105 includes a rear housing 110 forming an external appearance of the rear side of the antenna device 100 and a front housing 130 forming an external appearance of the front side of the antenna device 100.
In addition, the antenna device 100 according to an embodiment of the present invention further includes a main board 120 closely disposed in the internal space 110S of the antenna housing 105 and a Radio Frequency (RF) module (Radio Frequency Module) 200 for an antenna (hereinafter, simply referred to as "RF module") stacked on the front surface of the front housing 130.
The antenna housing 105 forms the external appearance of the overall antenna device 100 by being combined with the RF module 200, and although not shown, may mediate the combination with a post rod prepared for setting the antenna device 100. However, the antenna housing 105 does not necessarily need to be coupled to a post rod, and may be directly provided and fixed to a vertical structure such as an inner wall or an outer wall of a building in a wall-hanging manner, as long as it is not limited by the installation space of the antenna device 100. In particular, for the antenna device 100 according to an embodiment of the present invention, it is important to design as thin as possible to minimize the front-rear thickness in order to make the installation of the wall-mounted form easier. In this regard, it is described in further detail below.
The antenna case 105 is made of a metal material excellent in heat conductivity to facilitate heat dissipation by heat conduction as a whole, and has a rectangular parallelepiped case shape of a thin thickness in a substantially front-rear direction, and the front surface of the rear case 110 is open and thus has a predetermined internal space 110S, although not shown, mediating the installation of the main board 120 on which digital devices (for example, a programmable gate array (Field Programmable Gate Array, FPGA) device and/or a power supply unit (Power Supply Unit, PSU) device) or the like are mounted.
On the other hand, although not shown, the inner side surface of the rear case 110 may be formed in a shape conforming to an external protruding shape of a digital device (FPGA device or the like) and/or a Power Supply Unit (PSU) device or the like mounted on the rear surface of the main board 120. This is to maximize heat dissipation performance by increasing the thermal contact area with the back surface of the motherboard 120.
Although not shown, grip portions that can be grasped may be provided on both left and right sides of the antenna housing 105 in order for an operator to transport the antenna device 100 of one embodiment of the present invention in an actual site or to manually install it on a pole (not shown) or an inner or outer wall of a building.
Further, various outer mounting members 500 for cable connection to a base station apparatus not shown and adjustment of internal members may be installed to extend through the outer side of the lower end portion of the antenna housing 105. The outer mounting member 500 is provided in the form of at least one cable connection terminal (socket), and each connection terminal is connectable with a connection terminal of a coaxial cable (not shown).
Referring to fig. 2, a plurality of rear heat sink 111 may be integrally formed at the rear surface of the rear case 110 to have a predetermined pattern shape. Here, heat generated from the main board 120 provided in the inner space 110S of the rear case 110 may be directly dissipated rearward by the plurality of rear heat dissipation fins 111.
The plurality of rear fins 111 are designed as follows: the heat dissipated to the rear of the rear case 110 forms upward airflows dispersed in the left and right directions of the rear case 110, respectively, as moving to the left and right ends based on the left and right width middle portions (refer to part (b) of fig. 2), so as to disperse the heat more rapidly.
However, the shape of the rear fin 111 is not necessarily limited thereto. Although not illustrated, it can be assumed that the following manner is adopted: when the rear housing 110 is provided at the rear side with a blower fan module (not shown), the rear heat sink 111 may be parallel at the blower fan module disposed in the middle to the left and right sides, respectively, so as to more rapidly release heat dissipated by the blower fan module.
Further, although not shown, a mounting portion (not shown) to which a clamp device (not shown) for coupling the antenna device 1 to a strut (not shown) is coupled may be integrally formed in a part of the plurality of rear fins 111. The clamp device may be configured to rotate the antenna device 100 according to an embodiment of the present invention provided at the front end portion thereof in a left-right direction or in a tilt direction to adjust the directivity of the antenna device 100.
However, the mounting portion does not necessarily have to incorporate a clamping means for tilting and rotating the antenna device 100. For example, when the antenna device 100 is provided in a wall-hanging form on an inner wall or an outer wall of a building, a clip panel in the shape of a hanging lock plate, which is easily combined in a wall-hanging form, may be combined in the mounting portion.
Hereinafter, the RF module 200 for an antenna according to the present invention is described in further detail with reference to the accompanying drawings.
The RF module 200 may include a Radio Frequency (RF) filter 140, a radiating device module 160, and an amplifying substrate 146. In addition, the RF module 200 may further include a reflector 150 for Ground (GND) of the radiator module 160. However, the reflector 150 functions not only as a ground of the radiator module 160, but also as a Radio Frequency (RF) filter 140 in the antenna housing 105, which will be described later, exposed to the front external air, which is defined as the front of the front surface of the front housing 130, from the outside.
As shown in fig. 2 to 5, the RF module 200 configured as described above can be stacked on the front surface of the main board 120 with the front case 130 of the antenna case 105 as an interface.
In the antenna device 100 according to one embodiment of the present invention, the Radio Frequency (RF) filter 140 is composed of a plurality of pieces, constituting an RF module assembly for an antenna.
As shown in fig. 2 and 3, a total of 8 Radio Frequency (RF) filters 140 are adjacently arranged in the left-right direction, and a total of 4 columns of the plurality of Radio Frequency (RF) filters 140 are respectively arranged in the up-down direction. However, it is not necessarily limited thereto, and of course, the arrangement position thereof and the number of Radio Frequency (RF) filters 140 may be changed in various designs.
Also, in one embodiment of the present invention, a predetermined space (Cavity) is exemplarily formed at one side of the Radio Frequency (RF) filter 140, and a Cavity filter having a resonator composed of a dielectric oscillator (Dielectric Resonator, DR) or a metal resonator rod is formed in the space. However, the Radio Frequency (RF) filter 140 is not limited thereto, and various filters such as dielectric filters may be employed.
In addition, the plurality of radiator modules 160 are combined corresponding to the number of each of the plurality of Radio Frequency (RF) filters 140, and each of the radiator modules 160 implements 2T2R. Thus, the antenna device 100 according to one embodiment of the present invention exemplifies a model of co-implementation 64T64R, but is not limited thereto.
On the other hand, as described above, the RF module 200 may further include a reflector 150, the reflector 150 being disposed to cover the plurality of Radio Frequency (RF) filters 140 and to serve as a ground for the plurality of radiation device modules 160. For this, the reflector 150 is preferably made of a metal material.
The reflector 150 may also function as a reflective layer of the radiation device module 160. Accordingly, the reflector 150 may reflect a Radio Frequency (RF) signal output from the radiation device module 160 in a direction corresponding to the orientation to concentrate the Radio Frequency (RF) signal.
In addition, the reflector 150 is a unique function of the RF module 200 according to an embodiment of the present invention, and may perform a heat dissipation function of the outside air of the system heat generated from the antenna device.
For this, as shown in fig. 6, the reflector 150 may be formed in a mesh shape perforated with a plurality of heat dissipation holes 155. The plurality of heat release holes 155 are configured to communicate the inside and outside of the reflector 150 and may function as heat release holes for releasing heat generated from the Radio Frequency (RF) filter 140 located in the rear space of the reflector 150 to the outside of the reflector 150. Therefore, the outside air can be positively used in heat dissipation of the antenna device 100.
On the other hand, the size of the heat dissipation hole 155 may be appropriately designed by simulating the durability and heat dissipation characteristics of the reflector 150, and in particular, in order to maintain a smooth Ground (GND) function, the size of the heat dissipation hole 155 may be designed in consideration of the wavelength of the operating frequency. For example, the size of the heat radiation hole 155 may be set to a size in the range of 1/10λ to 1/20λ having the operating frequency.
Where the interval 1/10 lambda has the meaning of an upper threshold value performing a sufficient Ground (GND) effect of the radiator module 160, and the interval 1/20 lambda has the meaning of a lower threshold value ensuring a minimum outside air flow through the heat radiation holes 155 of the reflector 150.
Therefore, it is preferable that the heat radiating hole 155 is sized to be greater than a range of 1/20 λ of the operating frequency and less than 1/10 λ of the operating frequency.
In particular, the reflector 150 is provided in a singular number between the plurality of Radio Frequency (RF) filters 140 and the plurality of heat sink modules 160 in terms of a Ground (GND) function, and may be defined as a structure performing a common ground (common ground) function.
In more detail, as shown in fig. 6, the reflector 150 may be formed in a 4-angle metal plate shape laminated at the front ends of the plurality of Radio Frequency (RF) filters 140. At the front surface of the reflector 150, an antenna setting part 151 for placing each of the heat sink modules 160 described later may be formed in a planar shape at a position corresponding to the Radio Frequency (RF) filter 140. In the configuration of the rear Radio Frequency (RF) filter 140, the antenna mounting portion 151 is formed in a planar shape, and the front surface of the filter body 141 is in surface thermal contact with the rear surface of the front radiation device module 160, so that the heat radiation performance by the heat conduction method can be improved.
As shown in fig. 6, a frame bending plate 154 formed as follows is formed in the reflector 150: the rim portions are respectively bent backward to enclose and protect sides of a plurality of Radio Frequency (RF) filters 140 coupled to the front surface of the front case 130. A plurality of bolt fixing grooves 153 are provided at a plurality of positions along the edge of the frame bending plate 154 at intervals, and the plurality of bolt through holes 133 formed along the edges of the front case 130 and the plurality of bolt fixing grooves 153 can be coupled to the front of the front case 130 by the action of fastening a plurality of assembly bolts (not labeled with a reference numeral).
As shown in fig. 2 to 5, the RF module 200 for an antenna is detachably incorporated into the antenna housing 105. The antenna RF module 200 may be physically fastened to the front case 130 by bolting (or screwing) or the like, and the amplification unit substrate 146 constituting the antenna RF module 200 may be attached to the main board 120 by a socket pin coupling method. Specifically, the enlarged portion base plate 146 has an inner insertion portion 146 'shown in fig. 12a, which will be described later, and the front surface of the main board 120 may have an outer insertion portion 125 that is socket-pin-coupled with the inner insertion portion 146' of the enlarged portion base plate 146. The specific constitution and function of the amplifying section substrate 146 will be described in further detail below.
As shown in fig. 3a and 3b, the front case 130 plays a role of dividing between the main board 120 provided in the internal space 110S of the antenna case 105 and the RF module 200 stacked on the front surface thereof. Also, the front case 130 is provided to distinguish the internal space 110S of the antenna case 105 side from other spaces, so that a thermal blocking and separating function can be performed to prevent heat generated from the internal space 110S of the antenna case 105 side from affecting the Radio Frequency (RF) filter 140 side.
Wherein, preferably, the meaning of "heat blocking" is understood to mean blocking the invasion of heat generated from the RF module 200 located in the front outside air (or front space) to the rear space side of the front case 130 (i.e., the inner space 110S of the rear case 110), wherein the front outside air is defined in front of the front surface of the front case 130, and preferably, the meaning of "heat separation" is understood to mean separation arrangement of heat structures by separating and intensively dispersing a part of the plurality of heat generating devices mounted in the front surface and rear of the main board 120 so that both rear heat dissipation and front heat dissipation can be performed, wherein the main board 120 is initially laminated in the inner space 110S of the rear case 110.
In addition, in the case where there are many manufacturers for manufacturing the antenna device and the components and devices included in the antenna device in the current market, in view of the manufacturers for manufacturing only the RF modules 200, there is an advantage that the RF modules 200 can be temporarily assembled in the front case 130 in advance or distributed and sold in units of modules that can be temporarily assembled, and a new market environment can be established.
In the front case 130, a plurality of bolt through holes 133 for bolt-fastening of the reflector 150 may be formed at a plurality of positions along the edge. In the front case 130, the inner insertion portions 146' formed on the amplification unit substrate 146 of the Radio Frequency (RF) filter 140 are respectively penetrated, so that penetration slits 135 for performing socket pin coupling with the outer insertion portions 125 of the main board 120 can be formed.
Here, since the heat radiation hole 155 of the reflector 150 is exposed to the outside between the rear surface frame portion of the front case 130 and the front surface frame portion of the rear case 110 as described above, in the case where the antenna device 100 according to one embodiment of the present invention is provided outside a building (i.e., outdoors), there is a possibility that rainwater may infiltrate in a rainy day, and a waterproof gasket (not shown) may be inserted in order to prevent inflow of rainwater or the like. Further, foreign matter inflow prevention rings (not shown) for protecting the inner insertion opening 146' of the amplifying part substrate 146 penetrating the slits from the outside and preventing foreign matters such as rainwater from flowing into the inner space 110S side of the rear case 110 through the gaps may be inserted into the front and rear surfaces of the through slits 135 penetrating the front case 130, respectively.
As described above, the antenna device 100 according to an embodiment of the present invention adopts a simple socket pin coupling manner in constructing a predetermined electric signal line between the main board 120 and the Radio Frequency (RF) filter 140, thereby eliminating the need for an additional coaxial connector (Direct Coaxial Connector, DCC) for electrically connecting between the Radio Frequency (RF) filter 140 and the main board 120, thus providing an advantage of greatly reducing the manufacturing cost of the product.
However, the socket pin coupling method of the Radio Frequency (RF) filter 140 is used here, and it is understood that an effective effect is created in terms of electrical connection, and in terms of physical coupling, a plurality of bolt fastening methods may be additionally used in order to prevent any flow of the Radio Frequency (RF) filter 140. For example, as shown in fig. 12a and 12b described later, in the structure of the Radio Frequency (RF) filter 140, a more stable fixing effect can be created by the bolt fastening method of the fixing bolt 142 to the front case 130 by the plurality of bolt through holes 142a formed in the rear end edge of the filter body 141.
Fig. 7 is an exploded perspective view showing a state in which a main board is provided with respect to a rear case in the configuration of fig. 2, fig. 8 is an exploded perspective view showing a state in which an RF module assembly is provided with respect to a main board in the configuration of fig. 2, fig. 9 is a perspective view showing a state in which a filter main body is separated from the rear case in the configuration of fig. 8, fig. 10 is a perspective view showing an RF module in the configuration of fig. 8, fig. 11 is a sectional view taken along a line C-C of fig. 10, and is a projection sectional perspective view of an internal form partial projection, fig. 12a and 12b are exploded perspective views showing an RF module in fig. 10, fig. 13 is a detail view showing an amplifying substrate in the configuration of the RF module in fig. 10, fig. 14 is a sectional perspective view showing a coupling state of the amplifying substrate with respect to the main board, fig. 15 is an exploded perspective view showing an assembling state of the RF module in the configuration of fig. 3, and fig. 16 is an exploded perspective view showing an assembling state of a radiation device module in the configuration with respect to a reflector in the configuration of fig. 3.
One embodiment of the RF module 200 for an antenna according to the present invention may include: a Radio Frequency (RF) filter 140; a radiating device module 160 disposed at one side of the Radio Frequency (RF) filter 140; an amplifying section substrate 146 is provided on the other side of the Radio Frequency (RF) filter 140, and is mounted with an analog amplifying device.
Wherein the Radio Frequency (RF) filter 140 may have at least four outer sides. That is, the Radio Frequency (RF) filter 140 includes: when having four outer sides, are arranged as tetrahedrons; when the five outer side surfaces are provided, the five outer side surfaces are arranged as pentahedrons; when having six outer sides, a hexahedron is provided. Accordingly, when the terms "one side" and "another side" of the Radio Frequency (RF) filter 140 are used below, the terms "one side" and "another side" mean any one of at least four outer sides and other sides other than the one, and do not mean the concept of physically completely opposite sides to each other, but are understood to mean any one of the sides and other sides other than the one.
Accordingly, as shown in fig. 2 to 5, another embodiment of the RF module 200 for an antenna according to the present invention may be defined as an embodiment in which heat generated from the Radio Frequency (RF) filter 140 and heat generated from the analog amplifying device are dissipated in different directions.
In view of the structure in which the amplifying substrate 146 is provided inside the Radio Frequency (RF) filter 140, the antenna RF module 200 according to the present invention may be defined as an embodiment in which the RF module 200 is basically configured by the Radio Frequency (RF) filter 140 and the radiating device module 160 provided at the front end portion thereof.
The RF module 200 is a combination of analog Radio Frequency (RF) components, for example, the amplifying unit substrate 146 is a Radio Frequency (RF) component on which an analog amplifying device for amplifying a Radio Frequency (RF) signal is mounted, the Radio Frequency (RF) filter 140 is a Radio Frequency (RF) component for frequency-filtering an input Radio Frequency (RF) signal into a desired frequency band, and the radiation device module 160 is a Radio Frequency (RF) component having an effect of receiving and transmitting the Radio Frequency (RF) signal.
Therefore, the RF module 200 for an antenna according to the present invention may also be defined as another embodiment as described below.
The RF module 200 for an antenna according to the present invention is an RF module 200 for an antenna including an analog Radio Frequency (RF) part including: a Radio Frequency (RF) filter 140 having at least four outer sides; a radiation device module 160 disposed on either one of outer sides of the Radio Frequency (RF) filter 140; and analog amplifying devices 146a-1, 146a-2, 146c on the amplifying section substrate 146 are provided on the other side of the outer side face of the Radio Frequency (RF) filter 140.
The amplifying substrate 146 may be electrically connected to the motherboard 120 inside the antenna housing 110, 130. In more detail, as described below, the amplifying section substrate 146 may be electrically connected to the main board 120 by a socket pin coupling manner.
Also, still another embodiment of the RF module 200 for an antenna according to the present invention may be defined as a concept including: a Radio Frequency (RF) filter 140; a radiation device module 160 disposed at a front surface of the Radio Frequency (RF) filter 140; and a reflector 150 disposed between the Radio Frequency (RF) filter 140 and the radiator module 160 to Ground (GND) the radiator module 160 and to mediate heat generated from the Radio Frequency (RF) filter 140 to radiate to the outside.
In further detail, in still another embodiment of the RF module 200 for an antenna according to the present invention, it may include: a Radio Frequency (RF) filter 140 stacked with respect to a front surface of the main board 120 disposed in the internal space 110S of the antenna housings 110, 130; a radiating device module 160 stacked on a front surface of the Radio Frequency (RF) filter 140; and a reflector 150 disposed to cover the Radio Frequency (RF) filter 140, to function as a Ground (GND) of the radiation device module 160, and to mediate heat generated from the Radio Frequency (RF) filter 140 side to radiate to the outside. As described above, the reflector 150 may of course further function as a reflective layer capable of concentrated irradiation of the radiation signal.
In particular, if a case is assumed in which the Radio Frequency (RF) filter 140 has at least four outer surfaces, the radiation device module 160 is stacked on any one surface (front surface) of the Radio Frequency (RF) filter 140, the amplifying substrate 146 is provided on the other surface of the outer surfaces of the Radio Frequency (RF) filter 140, and heat generated from at least one amplifying substrate 146 on which an analog amplifying device is mounted can be dissipated through one of the side walls of the Radio Frequency (RF) filter 140 adjacent to the amplifying substrate 146, and then finally dissipated to the outside through the reflector 150.
On the other hand, in still another embodiment of the RF module 200 for an antenna according to the present invention, it is possible to be detachably connected to the antenna housing 105. That is, the RF module 200 for an antenna according to the present invention may be defined as yet another embodiment including: a Radio Frequency (RF) filter 140; a radiation device module 160 disposed at a front surface of the Radio Frequency (RF) filter 140; and a reflector 150 disposed between the Radio Frequency (RF) filter 140 and the radiator module 160, the antenna RF module 200 being detachably connected to the antenna housing 105. Specifically, the RF module 200 for an antenna is configured such that the main board 120 provided in the internal space 110S of the rear case 110 in the configuration of the antenna case 105 is detachably coupled with the front case 130 as a medium.
Accordingly, since the Radio Frequency (RF) component having the frequency dependency (Frequency Dependence) is configured as an RF module, and the module is attached to and detached from the antenna housing 105, only the corresponding antenna RF module 200 is replaced when a failure or breakage occurs in the Radio Frequency (RF) component constituting the antenna device 100, and thus there is an advantage in that maintenance and repair of the antenna device 100 are facilitated.
Also, the reflector 150 is provided to cover the Radio Frequency (RF) filter 140, and may be provided to cover the entire Radio Frequency (RF) filter 140 protruding and exposed to the front outside of the front case 130 with reference to the inner space 110S of the antenna case 105. As described above, the reflector 150 is used to protect the Radio Frequency (RF) filter 140 exposed to the front outside air (or front space) defined in front of the front surface of the front case 130 from the external environment, and as described above, the air flow to the inside and outside is smoothed by the innumerable heat dissipation holes 155, so that the further improved front heat dissipation performance can be achieved.
On the other hand, the RF module 200 implemented as the various embodiments described above has a plurality of RF modules, and thus the RF module assembly 300 for an antenna described later can be configured.
As shown in fig. 12a and 12b, the plurality of Radio Frequency (RF) filters 140 may include: the filter body 141 has predetermined spaces C1 and C2 formed on one side and the other side in the width direction with respect to the intermediate partition 143; a plurality of resonators (DR, not shown) provided in a plurality of cavities (not shown) in any one of the predetermined spaces C1, C2 (refer to a reference numeral "C1" of fig. 12 a); the amplifying part substrate 146 is provided in the other of the predetermined spaces C1 and C2 (see reference numeral "C2" in fig. 12 b), and is electrically connected to the external socket 125 of the main board 120. Wherein the filter body 141 is made of a metal material and is manufactured by a die casting process.
The plurality of Radio Frequency (RF) filters 140 may be used as a cavity filter for filtering a frequency band of an output signal with respect to an input signal by using frequency adjustment of a plurality of resonators (DR) disposed on the "C1" side in a predetermined space. However, the Radio Frequency (RF) filter 140 is not necessarily limited to a cavity filter only, and as described above, the ceramic waveguide filter (Ceramic Waveguide Filter) is not excluded.
The thickness of the Radio Frequency (RF) filter 140 in the front-rear direction is thin, which is advantageous for the overall slim design of the product. In terms of the product slim design as described above, the Radio Frequency (RF) filter 140 may consider a ceramic waveguide filter advantageous in the miniaturization design, compared to a cavity filter in which the front-rear direction thickness reduction design is limited. However, in order to satisfy the high functional performance of the base station antenna required in the 5G frequency environment, it is necessary to solve the problem of the heat dissipation of the antenna accompanied therewith, and in order to effectively release the heat generated inside the antenna, the Radio Frequency (RF) filter 140 may be used as a heat transfer medium to transfer the heat generated by the Radio Frequency (RF) filter 140 to the front of the antenna housing 105, and from this point of view, a cavity filter may be preferably employed.
In particular, in the antenna device 100 according to an embodiment of the present invention, the plurality of Radio Frequency (RF) filters 140 are detached from the limited inner space 110S of the antenna housing 105 in the form of the RF module 200 to be directly exposed to the outside air, and in this regard, heat dissipation can be performed by the periphery other than the mounting surface of the Radio Frequency (RF) filters 140, so that the cavity filters are more preferably employed. Hereinafter, a cavity filter is employed in the antenna device 100 according to an embodiment of the present invention as an example of the Radio Frequency (RF) filter 140.
As shown in fig. 10 to 12b, according to the antenna apparatus 100 of an embodiment of the present invention, radio Frequency (RF) devices, that is, RFIC devices (not shown), power Amplifier (PA) devices 146a-1, 146a-2, and low noise Amplifier (Low Noise Amplifier, LNA) devices 146c, which have been conventionally mounted on the front surface or the rear surface of the main board 120, are separated from the amplifying substrate 146 mounted on the Radio Frequency (RF) filter 140, and the Radio Frequency (RF) filter 140 is entirely exposed to the outside air, thereby providing an advantage of greatly improving the heat dissipation performance.
That is, not only does a radome (radome) provided in front of an antenna housing become an obstacle factor for heat dissipation in the front side, but there is also a problem in that a digital device or a Power Supply Unit (PSU) having a high heat generation amount is collectively mounted on a motherboard together with a Radio Frequency (RF) device (radio frequency integrated circuit (RFIC), power Amplification (PA) device, low Noise Amplification (LNA) device, and the like) to cause heat concentration in the interior of the antenna housing. Further, the concentrated heat needs to be concentrated and radiated to the rear side of the antenna housing, and thus there is a problem in that the radiating efficiency is greatly reduced.
However, as shown in fig. 13, in the antenna device 100 according to the embodiment of the present invention, a plurality of RF modules 200 are separately provided in front of the internal space 110S of the antenna housing 105 and are directly exposed to the outside air, and the amplification unit substrate 146 is added to a part of the side wall of the Radio Frequency (RF) filter 140, and Radio Frequency (RF) devices 146a-1, 146a-2, 146c conventionally mounted on the main board are provided so as to be dispersed, whereby heat can be dispersed and the dispersed heat can be dispersed more quickly to the outside.
The Radio Frequency (RF) devices may be analog amplifying devices, including Power Amplifier (PA) devices 146a-1, 146a-2, low noise Amplifier (Low Noise Amplifier, LNA) device 146c, etc., as described above.
In more detail, in the amplifying section substrate 146, a pair of Power Amplifying (PA) devices 146a-1, 146a-2, one of the analog amplifying devices, may be mounted on either side, a Low Noise Amplifying (LNA) device, one of the analog amplifying devices, and circulators 146d-1, 146d-2 for decoupling the two may be electrically connected.
However, it is not necessarily necessary to mount the analog amplifying devices described above on either of the two sides of the amplifying section substrate 146, and it is needless to say that the analog amplifying devices are mounted on the two sides of the amplifying section substrate 146 in a scattered manner according to the embodiment.
Also, the amplifying part substrate 146 is separately mounted on the Radio Frequency (RF) filter 140 side, so that the number of layers of the main board 120 made of multiple layers can be reduced, and in this regard, there is provided an advantage of reducing the manufacturing cost of the main board 120.
The amplification part substrate 146 may be installed inside the other C2 of the predetermined spaces C1, C2, and at least an end of the inner insertion part 146' protrudes and is exposed to the rear surface side of the filter body 141.
On the other hand, as shown in fig. 10 to 12b, the plurality of Radio Frequency (RF) filters 140 may further include a filter heat dissipation panel 148, and the filter heat dissipation panel 148 may dissipate heat generated from the amplifying section substrate 146 from the predetermined space C2 to the outside of the filter body 141.
A plurality of bolt fixing holes 149a are formed around the predetermined space C2 of the filter body 141, and a plurality of bolt through holes 149b are formed at a frame portion of the filter heat dissipation panel 148, the plurality of fixing bolts 149 penetrate the plurality of bolt through holes 149b at an outer side of the filter body 141, and the filter heat dissipation panel 148 may be fixed in the filter body 141 by an operation of fastening to the plurality of bolt fixing holes 149 a.
Wherein the outer side surface of the amplifying substrate 146 disposed inside the predetermined space C2 of the filter body 141 is in surface thermal contact with the inner side surface of the filter heat dissipation panel 148, and heat generated by the amplifying substrate 146 is thermally conducted through the filter heat dissipation panel 148 and can be released to the outside through the filter heat dissipation fin 148a integrally formed at the outside thereof.
On the other hand, although not shown, the Radio Frequency (RF) filter 140 for an antenna according to the present invention may further include a heat transfer medium disposed between the filter heat dissipation panel 148 and the amplifying substrate 146 to collect heat generated from the amplifying substrate 146 and transfer the heat to the filter heat dissipation panel 148.
The Heat transfer medium may be formed of any one of a Vapor chamber (Vapor chamber) or a Heat pipe (Heat-pipe) configured to transfer Heat through a phase change of a refrigerant flowing inside the closed interior. When the distance between the amplifying substrate 146 and the filter heat dissipation panel 148 as a heat source is relatively small, a vapor chamber is preferably used, whereas when the distance between the amplifying substrate 146 and the filter heat dissipation panel 148 as a heat source is relatively large, a heat pipe is preferably used.
As shown in fig. 10 to 12b and 14, in the plurality of Radio Frequency (RF) filters 140, the inner insertion portion 146' formed in the amplifying portion substrate 146 is detachably coupled with the outer insertion portion 125 provided at the front surface of the main board 120, and the fixing bolt 142 is fastened to the front case 130 by the plurality of bolt through holes 142a formed at the rear end edge of the filter main body 141, so that it is possible to further stably fix. As shown in fig. 14, in the inner insertion portion 146' formed on the amplifying portion substrate 146, the insertion pin is coupled to the outer insertion portion 125 by the through slit 135 formed in the front surface of the front case 130 corresponding to the external space, and at this point, a foreign matter inflow prevention ring, not shown, may be inserted between the filter main body 141 and the front case 130, which has been already described.
On the other hand, as shown in fig. 10 to 12b, at least one fixing boss 147 for bolt-fixing a plurality of radiation device modules 160 described later may be provided in the front surface of the filter body 141. At least one fixing boss 147 is penetrated through a boss through hole 157 formed in the reflector 150 to be exposed to the front surface of the antenna setting part 151 of the reflector 150, and is a site for fastening of the device fixing bolt 180 for fixing the plurality of radiation device modules 160.
Wherein, the at least one fixing boss 147 may be made of a metal material that is easily thermally conductive. Therefore, as described above, the filter body 141 and the fixing boss 147 are made of a metal material that is easily thermally conductive, and even if limited, heat generated from the filter body 141 is easily dissipated to the front of the removed radome (radome). Further, the radiation guide 165 in the structure of the radiation device module 160 described later is also made of a metal material that is easy to conduct heat, and the front heat radiation performance can be further improved in terms of enlarging the front heat radiation area. In this regard, it will be described in further detail later.
As shown in fig. 2 to 5, in order to implement Beamforming (Beamforming), as an Array antenna (Array antenna), a plurality of radiator modules 160 are required, and the plurality of radiator modules 160 may generate a narrow directional beam (narrow directional beam), increasing concentrated propagation to a specified direction. Recently, among the plurality of radiation device modules 160, dipole type Dipole antennas (Dipole antenna) or Patch type Patch antennas (Patch antenna) are used at the highest frequency and are designed to be spaced apart to minimize mutual signal interference. Conventionally, in order to prevent such an arrangement design of the plurality of radiation device modules 160 from being changed by external environmental factors, it has been necessary to provide a radome (radiome) for protecting the plurality of radiation device modules 160 from external influences. Therefore, only the area covered by the radome is limited, and the antenna board on which the plurality of radiator modules 160 and the plurality of radiator modules 160 are mounted is not exposed to the outside air, so that the system heat generated by the operation of the antenna device 100 can be dissipated to the outside only to a very limited extent.
As shown in fig. 10 to 12b, the radiation device module 160 of the antenna apparatus 100 according to one embodiment of the present invention may include: a radiation device module cover 161 formed longer up and down, and a plurality of antenna installation parts 151 formed on the front surface of the reflector 150; a printed circuit board 162 for a radiator, which is provided on the back surface of the radiator module cover 161 in close contact therewith, is provided between the radiator module cover and the antenna mounting portion 151, and is printed with a patch antenna circuit portion 163a and a feeder line 163b; the radiation guide 165 is formed of a conductive metal material, and is electrically connected to the patch antenna circuit portion 163a of the radiation device printed circuit board 162.
The patch antenna circuit part 163a described above may be printed and formed on the front surface of the printed circuit substrate 162 for a radiation device, and the patch antenna circuit part 163a generates a dual polarized patch device of either one of a ±45 polarization or a vertical/horizontal polarization, which are orthogonal. The patch antenna circuit sections 163a may be printed so as to be spaced apart from each other in the up-down direction (longitudinal direction), and each of the patch antenna circuit sections 163a may be connected to each other by a feeder line 163 b.
In the conventional antenna device, the feeder line needs to form a separate feeder line at the lower portion of the printed circuit substrate on which the patch antenna circuit portion is mounted, and for this reason, the feeder line structure becomes complicated, for example, has a plurality of through holes or the like, and the feeder line structure occupies the lower space of the printed circuit substrate 162 for the radiator, thus causing a problem of being used as an interference factor of direct surface thermal contact between the Radio Frequency (RF) filter 140 and the printed circuit substrate 162 for the radiator, but the feeder line 163b according to the embodiment of the present invention is pattern-printed together with the patch antenna circuit portion 163a on the same front surface as the printed circuit substrate 162 for the radiator on which the patch antenna circuit portion 163a is pattern-printed, so that there are the following advantages: the feeder line structure becomes very simple and a bonding space for direct surface thermal contact on the printed circuit substrate 162 for the Radio Frequency (RF) filter 140 and the radiation device can be ensured.
On the other hand, the radiation guide 165 is formed of a thermally conductive or electrically conductive metal material to be electrically connected to the patch antenna circuit part 163 a. The radiation guide 165 guides the direction of the radiation beam in all directions, and simultaneously performs a function of transferring heat generated from the rear side to the front side of the printed circuit board 162 for the radiation device by conduction. The radiation guide 165 may be made of a metal having a good conductive material, and may be provided so as to be spaced apart from each other in front of each patch antenna circuit part 163 a.
In the embodiment of the present invention, the radiation device using the patch antenna circuit part 163a and the radiation director 165 is described, but when the dipole antenna is applied, the constitution of the radiation director may be omitted, and since the height of the dipole antenna is relatively high, heat may be radiated to a place farther than the front surface of the reflector 150 to increase the heat radiation amount.
Referring to fig. 4 and 10 to 12b, the radiation guide 165 is electrically connected to the patch antenna circuit part 163a through the guide through hole 164 c. The overall size, shape, installation position, and the like of the radiation guide 165 can be appropriately designed by measuring characteristics of the radiation beam emitted from the corresponding patch antenna circuit part 163a, and experimentally or simulating the corresponding characteristics. The radiation guide 165 has a function of guiding the direction of the radiation beam generated by the patch antenna circuit part 163a to the full direction, and thus further reduces the beam width of the entire antenna, and also improves the characteristics of the side wings. Furthermore, the patch antenna can compensate for the loss caused by the patch antenna, and can be made of metal of conductive material, so that the heat dissipation function can be performed at the same time. The shape of the radiation guide 165 is preferably, but not limited to, a circular shape having no directivity, for example, in an appropriate shape for guiding the direction of the radiation beam in all directions.
On the other hand, at least two patch antenna circuit sections 163a and the radiating guide 165 may constitute one radiating device module 160. An example in which three patch antenna circuit sections 163a and radiating guides 165 form one unit radiating device module 160 is shown in fig. 10 to 12b, and the number of patch antenna circuit sections 163a and radiating guides 165 may be changed according to an optimal design of the radiating device module for improving gain (gain). That is, in the RF module 200 for an antenna according to an embodiment of the present invention, a case where a total of three radiating guides 165 are provided in each RF module 200 is employed so that the maximum gain (gain) can be ensured, but is not limited to the number thereof.
A through hole 164c is formed in the radiation guide 165, and the radiation guide 165 can be electrically connected to the patch antenna circuit part 163a through the through hole 164 c. More specifically, the radiation guide 165 and the patch antenna circuit part 163a may be electrically connected with each other through a device fixing bolt 180 fixed to the front surface of the filter body 141.
As shown in fig. 12a and 12b, a guide fixing portion 167 that engages with the rear surface of the radiation guide 165 is provided on one side surface of the radiation device module cover 161, and a guide fixing protrusion 168 that can be coupled to the radiation guide 165 is formed to protrude forward in the guide fixing portion 167.
Wherein the radiation guide 165 is press-fitted into at least one guide fixing groove (not shown) formed in a recess at a position corresponding to the at least one guide fixing protrusion 168.
Further, at least one substrate fixing hole 164b for coupling with the Radio Frequency (RF) filter 140 may be formed through the radiation device module cover 161. The device fixing bolt 180 penetrates through the through hole 164c of the radiating guide 165 and the substrate fixing hole 164b of the radiating device module cover 161 through at least one substrate fixing hole 164b, and then penetrates through the substrate through hole 164a formed in the radiating device printed circuit substrate 162, so that it can be firmly coupled to the antenna installation portion 151 of the reflector 150.
Also, at least one reinforcing rib 166 is formed at the front surface of the radiator module cover 161 to form the external appearance of the radiator module cover 161, so that the strength of the radiator module cover 161, which is a plastic material, can be enhanced.
In the RF module 200 formed of the above-described structure, heat generated corresponding to the front Radio Frequency (RF) filter 140 may be directly released to the outside through contact with the rear surface of the reflector 150 or the heat dissipation hole 155 formed at the reflector 150, with reference to the front case 130.
On the other hand, the RF module assembly 300 for an antenna according to the present invention may be defined to include the RF module 200 realized by the following various embodiments.
As an embodiment, it may include: a plurality of Radio Frequency (RF) filters 140 removably coupled to the front surface of the main board 120; a plurality of radiation device modules 160 stacked on the front surfaces of the plurality of Radio Frequency (RF) filters 140; and a reflector 150 disposed to cover the plurality of Radio Frequency (RF) filters 140, to function as a Ground (GND) of the plurality of radiation device modules 160, and to mediate heat generated from the plurality of Radio Frequency (RF) filters 140 side to radiate to the outside.
As another embodiment, the RF module 200 includes: a plurality of Radio Frequency (RF) filters 140 disposed at predetermined distances from each other in an up-down direction and a left-right direction; a plurality of radiation device modules 160 stacked on the front surfaces of the plurality of Radio Frequency (RF) filters 140; and a reflector 150 disposed in such a manner as to divide between the plurality of Radio Frequency (RF) filters 140 and the plurality of radiator modules 160, the plurality of Radio Frequency (RF) filters 140 can be implemented in such a manner as to be detachably coupled to the front surface of the main board 120 laminated in the inner space 110S of the antenna housing 105 by means of socket pin coupling.
In addition, as still another embodiment, the RF module 200 includes: a plurality of Radio Frequency (RF) filters 140 each having at least four outer sides; a plurality of radiation device modules 160 stacked on any one (e.g., front surface) of the outer sides of each of the plurality of Radio Frequency (RF) filters 140; and an amplifying section substrate 146 provided at the other side of the outer side surface of each of the plurality of Radio Frequency (RF) filters 140 and mounted with at least one analog amplifying device; and a reflector 150, and can be implemented in such a manner that, disposed between the plurality of Radio Frequency (RF) filters 140 and the plurality of radiator modules 160, acting as a common ground for the plurality of radiator modules 160, heat generated by at least one analog amplifying device can be radiated through one of the sidewalls of the plurality of Radio Frequency (RF) filters 140, and then radiated forward with the reflector 150 as a medium.
Finally, as yet another embodiment, the RF module 200 includes: a plurality of Radio Frequency (RF) filters 140 removably coupled to the front surface of the main board 120, each having at least four outer sides; a plurality of radiation device modules 160 stacked on any one (e.g., front surface) of the outer sides of each of the plurality of Radio Frequency (RF) filters 140; the reflector 150 is provided to cover the plurality of Radio Frequency (RF) filters 140, the reflector 150 is formed of a metal material so as to perform a grounding function between the plurality of Radio Frequency (RF) filters 140 and the plurality of radiator modules 160 and reflect electromagnetic waves irradiated from the radiator modules 160 forward, and may be implemented as a plurality of heat radiating holes 155 are formed so as to release heat generated from the sides of the plurality of Radio Frequency (RF) filters 140 forward or sideways.
Referring to the drawings (in particular, fig. 7 and the following figures), an assembling process of the RF module 200 and the antenna device 100 according to an embodiment of the present invention constructed in the manner described above will be briefly described.
First, as shown in fig. 10 to 12b, in one embodiment of the method of assembling the RF module 200 for an antenna according to the present invention, the amplifying substrate 146 on which the analog amplifying device is mounted is bonded to any one of one side and the other side of the filter body 140 manufactured by die casting. Next, a reflector 150 having a plurality of heat radiation holes 155 formed on the front surface thereof is provided with a Radio Frequency (RF) filter 140, and then a printed circuit substrate 162 for a radiator of a radiator module 160 is provided on the reflector 150. After the radiation device module cover 161 of the radiation device module 160 is provided on the radiation device printed circuit board 162, the radiation guide 165 of the radiation device module 160 is assembled to the radiation device module cover 161, and the radiation guide 165 is electrically connected to the radiation device printed circuit board 162, thereby completing the assembly of the RF module 200. Thereafter, the enlarged base plate 146 may be coupled to the front surface of the main board 120 by means of socket pin coupling.
On the other hand, in one embodiment of the assembling method of the antenna device 100 according to the present invention, as shown in fig. 8, 9 and 15, in order to completely divide the inner space 110S and the outer space of the antenna housing 105 provided with the main board 120, the front housing 130 is coupled to the front end of the rear housing 110 to be fixed, and then the inner insertion portions 146' of the amplifying substrates 146 of the plurality of RF modules 200 may be coupled to the outer insertion portions 125 of the main board 120 by means of socket pin coupling.
Further, as shown in fig. 16, the reflector 150 is screw-fixed along the rim end of the rear case 110, and then the plurality of radiator modules 160 are respectively connected to the antenna installation part 151 to complete the assembly of the antenna device 100.
As described above, in the antenna device 100 according to an embodiment of the present invention, by removing the radome, the area exposed to the outside air is easily released to the entire direction including the rear and the front by the internal system heat of the antenna device 100, and the radiation device module 160 is provided to mediate the exposure to the outside air with the reflector 150, so that the scattered heat dissipation to the front and the rear of the antenna device 100 can be achieved, and thus the heat dissipation performance is greatly improved as compared with the related art.
Further, since the front-to-front protruding length equivalent to the volume occupied by the conventional radome can be reduced and heat can be radiated forward, the front-to-rear length of the plurality of rear fins 111 integrally formed with the rear surface of the rear case 130 can be reduced, and therefore the front-to-rear thickness of the antenna device 100 can be designed to be thin as a whole, whereby an advantage can be created in that a wall-mounted form to the inner wall or the outer wall of a building can be easily provided.
In the above, various embodiments of an RF module for an antenna, an RF module assembly, and an antenna device including the same according to the present invention are described in detail with reference to the accompanying drawings. However, the embodiments of the present invention are not necessarily limited to the above-described embodiments, and it is needless to say that various modifications and implementations within the equivalent scope can be made by one of ordinary skill in the art to which the present invention pertains. The true scope of the invention should therefore depend on the appended claims.
Industrial applicability
The present invention provides an RF module for an antenna and an antenna apparatus including the same, which can disperse heat dissipation to the front and rear of an antenna housing by removing a radome and disposing the RF module outside the antenna housing to be exposed to the outside air, thereby greatly improving heat dissipation performance.
Claims (21)
1. An antenna radio frequency module comprising an analog radio frequency component, wherein,
the analog radio frequency component comprises:
a radio frequency filter;
the radiation device module is arranged on one side of the radio frequency filter; and
an amplifying part substrate arranged on the other side of the radio frequency filter and provided with an analog amplifying device,
the antenna is disposed with the radio frequency module exposed to a front outside air, which is defined as a front of a front surface of the antenna housing,
the heat generated from the radio frequency filter and the heat generated from the analog amplifying device are radiated in different directions in the front outside air.
2. The radio frequency module for an antenna according to claim 1, wherein the amplifying substrate is electrically connected to a main board provided in an inner space of the antenna housing.
3. The radio frequency module for an antenna according to claim 1, wherein,
The antenna housing includes: a rear housing forming an inner space provided with a main board; and a front case provided to cover a front of the rear case and to separate the internal space from the front outside air,
the amplifying part substrate is detachably combined on the main board by taking the front shell as a medium.
4. The radio frequency module for an antenna according to claim 3, wherein,
the front housing is used as a reference, heat generated by the antenna radio frequency module arranged at the front part is dissipated to the front external air, the front external air is defined as the front of the front surface of the front housing,
the heat generated from the motherboard provided at the rear portion is dissipated to at least the front outside air or the rear outside air of the front case, which is defined as the rear of the rear surface of the rear case, with reference to the front case.
5. The radio frequency module for an antenna according to claim 1, wherein,
the radio frequency filter includes a filter body forming a predetermined space on one side and the other side in a width direction,
the amplifying substrate is disposed in any one of the spaces, and is coupled to a main board disposed in an inner space of the antenna housing in a socket pin coupling manner to make electrical connection.
6. The radio frequency module for an antenna according to claim 5, wherein,
the radio frequency filter further includes a filter heat radiation panel that radiates heat generated from the amplifying section substrate from an open space of the filter body to an outside of the filter body in a heat conduction manner while shielding the space,
the filter heat dissipation panel is in surface thermal contact with the amplifying part substrate so that heat generated from the amplifying part substrate is dissipated through a filter heat dissipation fin integrally formed on an outer side surface.
7. The radio frequency module for an antenna according to claim 5, wherein,
the radio frequency filter further includes a heat transfer medium disposed between the filter heat dissipation panel and the amplifying substrate to collect and transfer heat generated from the amplifying substrate to the filter heat dissipation panel,
the heat transfer medium is formed of a vapor chamber or a heat pipe configured to transfer heat through a phase change of the refrigerant flowing inside.
8. The radio frequency module for an antenna according to claim 1, wherein,
the amplifying part substrate is provided with at least one internal insertion part for coupling a socket pin to a main board provided in an internal space of the antenna housing,
At least one of a power amplifier and a low noise amplifier is mounted as the analog amplifier.
9. The radio frequency module for an antenna of claim 1, wherein the radiating device module is configured to produce one of dual polarizations.
10. The radio frequency module for an antenna according to claim 9, wherein,
the radiation device module includes:
the module cover of the radiation device is longer up and down and is respectively arranged at the antenna setting part;
a printed circuit board for a radiation device, which is arranged on the back surface of the radiation device module cover in a close contact manner, and is printed with a patch antenna circuit part and a feeder line for generating at least one polarization of the dual polarization; and
the radiating guide is formed of a conductive metal material and is electrically connected to the patch antenna circuit portion of the radiating device printed circuit board.
11. The radio frequency module for an antenna according to claim 10, wherein the radiating guide guides the direction of the radiation beam to the full direction, and heat generated from the radio frequency filter located at the rear of the radiating device printed circuit substrate is transferred to the front by heat conduction.
12. The radio frequency module for an antenna according to claim 11, wherein the radiating guide is formed of a thermally conductive material capable of conducting the heat.
13. The radio frequency module for an antenna according to claim 10, wherein,
a through hole is formed at one side surface of the radiation device module cover,
the radiation guide is coupled to the front surface of the radiation device module cover so as to be exposed to the outside air, and is electrically connected to the patch antenna circuit section through the through hole.
14. The radio frequency module for an antenna according to claim 10, wherein,
the radiation device module cover is injection molded,
a guide fixing portion which is engaged with the rear surface of the radiation guide is provided on one side surface of the radiation device module cover, at least one guide fixing protrusion portion which can be engaged with the radiation guide is formed to protrude forward in the guide fixing portion,
the radiation guide is press-fitted into at least one guide fixing groove formed in a recessed manner at a position of the rear surface corresponding to the at least one guide fixing protrusion.
15. The radio frequency module for an antenna according to claim 10, wherein,
The radiation device module cover is injection molded,
at least one substrate fixing hole for fastening by a fixing bolt with the printed circuit substrate for the radiation device is formed through the radiation device module cover.
16. The radio frequency module for an antenna according to claim 10, wherein the radiation device module cover is injection molded, and at least one reinforcing rib is integrally formed on one side surface of the radiation device module cover.
17. The radio frequency module for an antenna according to claim 1, wherein,
the amplifying substrate can be coupled to the motherboard with the front housing as a mediating socket pin,
the front case is provided in such a manner as to divide between the front of the main board, in which the rear case of the main board is provided, and the rear of the radio frequency filter in the antenna case, for blocking the flow of heat or external foreign matter on the antenna case side, in which the main board is provided.
18. The radio frequency module for an antenna according to claim 17, wherein, when the amplifying section substrate is provided to be coupled with the main board socket pin, at least one through slit for coupling the socket pin is formed to penetrate forward and backward in the front case.
19. The radio frequency module for an antenna according to claim 18, wherein a foreign matter inflow prevention ring for blocking inflow of external foreign matters is inserted into the at least one through slit.
20. An antenna radio frequency module assembly comprising an antenna radio frequency module comprising an analog radio frequency component, wherein,
the analog radio frequency component comprises:
a plurality of radio frequency filters;
a plurality of radiating device modules disposed on one side of each of the plurality of radio frequency filters; and
a plurality of amplifying part substrates disposed at the other side of each of the plurality of radio frequency filters and mounted with analog amplifying devices,
the antenna is disposed with the radio frequency module exposed to a front outside air, which is defined as a front of a front surface of the antenna housing,
the heat generated from the radio frequency filter and the heat generated from the analog amplifying device are radiated in different directions in the front outside air.
21. An antenna device, comprising:
a main board, at least one digital device is installed on the front surface or the rear surface;
a case-like antenna housing, a front opening being formed so as to set the main board; and
The radio frequency module assembly is connected to the main board through an electric signal wire,
the radio frequency module assembly comprises a radio frequency module for an antenna, the radio frequency module for the antenna comprises an analog radio frequency component,
the analog radio frequency component comprises:
a plurality of radio frequency filters;
a plurality of radiating device modules disposed on one side of each of the plurality of radio frequency filters; and
a plurality of amplifying part substrates disposed at the other side of each of the plurality of radio frequency filters and mounted with analog amplifying devices,
the antenna is disposed with the radio frequency module exposed to a front outside air, which is defined as a front of a front surface of the antenna housing,
the heat generated from the radio frequency filter and the heat generated from the analog amplifying device are radiated in different directions in the front outside air.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2020-0134434 | 2020-10-16 | ||
| KR10-2021-0031335 | 2021-03-10 | ||
| KR1020210031335A KR102519966B1 (en) | 2020-10-16 | 2021-03-10 | Rf module, rf module assembly for antenna and an antenna apparatus including the same |
| PCT/KR2021/014322 WO2022080923A1 (en) | 2020-10-16 | 2021-10-15 | Rf module for antenna, rf module assembly, and antenna apparatus including same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116745990A true CN116745990A (en) | 2023-09-12 |
Family
ID=87919093
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180070015.3A Pending CN116802931A (en) | 2020-10-16 | 2021-10-15 | Radio frequency module for antenna, radio frequency module assembly and antenna device comprising radio frequency module assembly |
| CN202180070016.8A Pending CN117044034A (en) | 2020-10-16 | 2021-10-15 | Radio frequency module for antenna, radio frequency module assembly and antenna device comprising radio frequency module assembly |
| CN202180070018.7A Pending CN116745990A (en) | 2020-10-16 | 2021-10-15 | Radio frequency module for antenna, radio frequency module assembly and antenna device comprising radio frequency module assembly |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202180070015.3A Pending CN116802931A (en) | 2020-10-16 | 2021-10-15 | Radio frequency module for antenna, radio frequency module assembly and antenna device comprising radio frequency module assembly |
| CN202180070016.8A Pending CN117044034A (en) | 2020-10-16 | 2021-10-15 | Radio frequency module for antenna, radio frequency module assembly and antenna device comprising radio frequency module assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN116802931A (en) |
-
2021
- 2021-10-15 CN CN202180070015.3A patent/CN116802931A/en active Pending
- 2021-10-15 CN CN202180070016.8A patent/CN117044034A/en active Pending
- 2021-10-15 CN CN202180070018.7A patent/CN116745990A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN116802931A (en) | 2023-09-22 |
| CN117044034A (en) | 2023-11-10 |
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