CN219534861U - Antenna radio frequency module and antenna device comprising same - Google Patents

Abstract

The invention relates to an antenna radio frequency module and an antenna device comprising the same, in particular to an antenna radio frequency module comprising: the unit radio frequency filter body is arranged on the front surface of the main board; the radiating element part is arranged on the front surface of the unit radio frequency filter body; and a reflector plate forming a front surface of the unit rf filter body and formed to be wider than an area of a vertical section of the unit rf filter body and grounding the radiating element part (GND), wherein left and right sides of the unit rf filter body are configured with left and right filter parts, wherein a plurality of cavities opening to left and right outer sides, respectively, are formed, and resonators are built in the respective cavities to perform filtering of different frequencies, the left and right filter parts penetrating the reflector plate and being electrically connected to the radiating element part, whereby an advantage of improving an overall PIM problem can be provided.

Description

Antenna radio frequency module and antenna device comprising same

Technical Field

The present invention relates to an antenna radio frequency module and an antenna apparatus including the same, and more particularly, to an antenna radio frequency module, a radio frequency module assembly, and an antenna apparatus including the same, which are configured to be completely separated from a main board and to be exposed to the outside air in front, thereby being capable of solving the difficulty in the heat dissipation design of the front side having a radiation element in the related art.

Background

Base station antennas including repeaters used in mobile communication systems have various forms and structures, and generally have a structure in which a plurality of radiating elements are appropriately disposed on at least one reflector plate standing along a length.

Recently, research is actively being conducted to satisfy high performance requirements for antennas based on multiple input/output (MIMO) and to achieve miniaturization, light weight, and low cost structures. In particular, antenna devices for realizing linear polarization or circular polarization and applying patch type radiating elements generally use a method of plating radiating elements made of dielectric substrates of plastic or ceramic materials and bonding them to PCBs (printed circuit boards) or the like by soldering combination.

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 of the related art, a plurality of radiation elements 35 are arranged in a beam output direction, that is, to a front side of an antenna housing body 10, so as to output in a desired direction and easily form a beam, a radome (radome) 50 is installed at a front end of the antenna housing body 10 with the plurality of radiation elements 35 installed therebetween, in order to avoid being affected by an external environment.

More specifically, the antenna device 1 in the related art includes: an antenna case body 10 configured in a thin rectangular parallelepiped box shape with an open front face, and a plurality of heat radiating fins 11 integrally formed on a rear face; a main board 20 stacked on the back surface of the inside of the antenna case body 10; and an antenna board 30 that is provided in a stacked manner on the front surface inside the antenna housing main body 10.

The front surface of the antenna board 30 has a patch type radiation element or a dipole type radiation element 35 built therein, and the front surface of the antenna housing body 10 may be mounted with a radome 50 for protecting various accessories inside from the outside and helping the radiation element 35 radiate smoothly.

However, one example of the antenna device 1 according to the related art has a structure in which various digital elements (FPGA elements and the like) and analog amplifying elements (PA elements and LNA elements and the like) are intensively built in the main board 20 and heat is dissipated through the back surface of the antenna housing main body 10.

Among them, the LNA element in the analog amplifying element generates a small amount of heat, but is incorporated in the main board 20, and therefore, not only increases the mounting distribution density of other heating elements on the main board, but also has a problem that performance is directly deteriorated due to heat of other heating elements.

In addition, a general antenna device has a problem of passive intermodulation (Passive Intermodulation, PIM), which is a spurious (spurious) signal generated by the nonlinear characteristics of passive elements, and which is a phenomenon that reduces signal-to-noise ratio characteristics on a communication path and deteriorates communication quality.

During production, the PIM characteristics of the distributed antenna system (DAS: distributed Antenna System) within the device remain above a predetermined quality, however in the field, PIM problems may occur with passive elements used in the distribution network from the back end of the antenna port of the remote device to the passive elements used in the distribution network of the final antenna.

In particular, when the structure is designed to modularly mount internal fittings such as antenna elements, the PIM problem described above will occur more seriously than in the integrated mounting (Integrated Mounting) because the individual modules are not firmly fixed.

Disclosure of Invention

Problems to be solved

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an antenna radio frequency module and an antenna device including the same, in which an LNA board part including an LNA element having a small amount of heat generation among heat generating elements is separated from a main board and bonded to a unit radio frequency filter body side to enable heat dissipation.

Meanwhile, another object of the present invention is to provide an antenna radio frequency module and an antenna apparatus including the same, that is, by manufacturing a radiating element part, a left filtering part, a right filtering part, and an amplifying element part in module units and assembling and modularizing at least one of a front surface, a left side surface, a right side surface, an upper surface, and a lower surface of a radio frequency filter body, it is possible to improve product productivity.

Also, it is another object of the present invention to provide an antenna device that can stably fix and support an antenna radio frequency module manufactured in a modular unit so that PIM characteristics can be maintained.

The technical problems of the present invention are not limited to the above-described problems, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Solution to the problem

According to an embodiment of the antenna radio frequency module of the invention, the antenna radio frequency module comprises: the unit radio frequency filter body is arranged on the front surface of the main board; the radiating element part is arranged on the front surface of the unit radio frequency filter body; and a reflector plate forming a front surface of the unit rf filter body and formed to be wider than an area of a vertical section of the unit rf filter body and for Grounding (GND) the radiating element portion, wherein left and right sides of the unit rf filter body are configured with left and right filter portions, wherein a plurality of cavities opening to left and right outer sides, respectively, are formed, and resonators are built in the plurality of cavities, respectively, to perform filtering of different frequencies, the left and right filter portions penetrating the reflector plate and being electrically connected to the radiating element portion.

Wherein, a pair of pin terminal mounting holes may be formed on the reflector plate, and a third connection pin terminal for mediating transmission and reception signals of the left and right filter parts and the radiating element part penetrates and is mounted to the pin terminal mounting hole.

And, the radiating element portion may be configured to produce one of at least two multipoles.

And, the radiating element section includes: a base plate disposed on a front surface of the reflector plate; a power supply feed base attached to the base plate and electrically connected to the left and right filter parts; and a radiation guide plate provided at a front end portion of the power supply feed base.

And, the third connection pin terminal may be welded to the base plate.

And, the antenna radio frequency module may further include an amplifying element part provided on any one of upper and lower surfaces of a front-rear thickness part as the unit radio frequency filter body, and including an LNA substrate part in which at least one analog amplifying element is built.

The LNA substrate part is arranged in the substrate mounting space arranged on the upper surface and the lower surface of the front and rear thickness parts forming the unit radio frequency filter body; the LNA substrate part is electrically connected with each cavity of the left filter part and the right filter part formed at the left side and the right side of the unit radio frequency filter body.

The LNA substrate part is formed with a male socket part so as to be coupled to the main board by socket pin coupling, and the substrate mounting space is formed with a through slit penetrating the male socket part of the LNA substrate part.

The LNA board unit includes at least one LNA element for amplifying a reception signal received from the radiation element unit through the left filter unit or the right filter unit, and the main board includes at least one PA element other than the LNA element, and heat generated from the at least one PA element can be radiated to the rear of an antenna case in which the main board is stacked.

And, the unit radio frequency filter body is formed with a pin mounting hole, the pin mounting hole runs through the base plate installation space with the cavity of left filter portion and the cavity of right filter portion, LNA base plate portion, left filter portion and right filter portion are respectively through installing at least one second connection pin terminal electricity in the pin mounting hole, second connection pin terminal welded fastening is to LNA base plate portion.

And the unit radio frequency filter body respectively comprises at least one input/output port for transmitting transmission signals through the left filter part and the right filter part, and the at least one input/output port can be electrically connected with the main board, the left filter part and the right filter part by taking the at least one first connection pin terminal as a medium.

And, the at least one first connection pin terminal may be welded to the front surface of the main board.

An antenna apparatus including an antenna radio frequency module according to an embodiment of the present invention includes: an antenna housing part formed in a box shape with an open front; a main board which is arranged in a layered manner against the inner surface of the antenna housing part; the plurality of antenna radio frequency modules are arranged on the front surface of the main board, wherein the plurality of antenna radio frequency modules comprise: the unit radio frequency filter body is arranged on the front surface of the main board; the radiating element part is arranged on the front surface of the unit radio frequency filter body; and a reflector plate forming a front surface of the unit rf filter body and formed to be wider than an area of a vertical section of the unit rf filter body and grounding the radiating element part (GND), wherein left and right sides of the unit rf filter body are configured with left and right filter parts, wherein a plurality of cavities opening to left and right outer sides, respectively, are formed, and resonators are built in the plurality of cavities, respectively, to perform filtering of different frequencies, and the left and right filter parts penetrate the reflector plate and are electrically connected to the radiating element part.

Wherein the plurality of antenna radio frequency modules may further include an amplifying element part provided on any one of upper and lower surfaces of the front and rear thickness parts as the unit radio frequency filter body, and including an LNA substrate part in which at least one analog amplifying element is built.

And, the radiating element part may include a base plate provided at a front surface of the reflector plate, the left and right filter parts being welded to the front surface of the main board so as to be electrically connected with the main board with a first connection pin terminal as a medium, the left and right filter parts being welded to the LNA substrate part so as to be electrically connected with the LNA substrate part with a second connection pin terminal as a medium, the left and right filter parts being welded to the base plate so as to be electrically connected with the base plate with a third connection pin terminal as a medium.

The antenna device further comprises a fixing member, wherein the left end and the right end of the fixing member are fixed on the left side wall and the right side wall of the antenna shell part and used for respectively fixing the unit radio frequency filter body, and the fixing member is made of a non-conductive material.

ADVANTAGEOUS EFFECTS OF INVENTION

According to an embodiment of an antenna radio frequency module and an antenna apparatus including the same according to the present invention, various effects as follows can be achieved.

First, by disposing the LNA element, which generates relatively little heat among the heat generating elements of the antenna device and is provided on the reception signal path that does not affect the whole system, separately from the main board, the overall heat radiation performance can be improved.

Second, by providing the left and right filtering sections capable of performing frequency filtering independently of each other on the left and right sides of the unit rf filter body, productivity of the dual band filter can be improved.

Third, the filter part, the radiating element part, and the amplifying part are manufactured and assembled as a single module unit, and the main board and the filter part, the amplifying part and the filter part, and the filter part and the radiating element part are configured to be electrically connected and welded and fixed, respectively, with connection pin terminals as media, and the conventional PIM characteristics of the antenna device are maintained by further configuring the fixing member.

The effects of the present invention are not limited to the above-described effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Drawings

Fig. 1 is an exploded perspective view showing one example of an antenna device according to the related art.

Fig. 2 is a perspective view illustrating an antenna device according to an embodiment of the present invention.

Fig. 3 is an overall exploded perspective view of fig. 2.

Fig. 4 is an exploded perspective view for describing an installation process of a main board of the antenna radio frequency module in the configuration of fig. 2.

Fig. 5 is an exploded perspective view for describing a mounting process of the fixing member in the configuration of fig. 2.

Fig. 6A and 6B are perspective views showing the front and back sides of the antenna radio frequency module in the configuration of fig. 2.

Fig. 7A to 7D are left side exploded perspective and right side exploded perspective of fig. 6A and 6B.

Fig. 8A and 8B are exploded perspective views for describing a coupling relationship of unit rf filter bodies of radiating element parts in the configuration of the antenna rf module.

Fig. 9 is a cross-sectional perspective view and a partially enlarged view showing a state of mutual electrical connection of the third connection pin terminals shown in fig. 8A and 8B.

Fig. 10 is an exploded perspective view for describing a coupling relationship of a unit rf filter body of an amplifying element part in the configuration of the antenna rf module.

Fig. 11 is a cross-sectional perspective view and a partially enlarged view showing a state of mutual electrical connection of the second connection pin terminals shown in fig. 10.

Description of the reference numerals

100: antenna device 110: antenna housing part

110S: the inner space 111: rear radiating fin

120: motherboard 125: female socket part

130: PSU plate portion 140: RFIC substrate part

150: surge substrate portion 200: antenna radio frequency module

210: unit rf filter body 220: radiating element part

230: amplification element unit 270: reflector plate

287: input/output port

Detailed Description

Hereinafter, a radio frequency module for an antenna and an antenna device including the same according to an embodiment of the present application will be described in detail with reference to the accompanying drawings.

It is to be noted that when reference numerals are added to components of the respective drawings, the same reference numerals are used as much as possible for the same components even if they are indicated on different drawings. In addition, in describing the embodiments of the present application, if a detailed description of related well-known structures or functions is considered to interfere with understanding of the embodiments of the present application, a detailed description thereof will be omitted.

In describing components of embodiments of the present application, terms such as first, second, A, B, (a), (b), and the like may be used. These terms are only used to distinguish one element from another element, the nature, order, or sequence of which is not limited by these terms. Furthermore, 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 such as the same as those defined in the conventional dictionary should be interpreted to have meanings consistent with meanings in the background of the related art, and should not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Fig. 2 is a perspective view showing an antenna device according to an embodiment of the present invention, fig. 3 is an overall exploded perspective view of fig. 2, fig. 4 is an exploded perspective view for describing an installation process of a main board of an antenna radio frequency module in the configuration of fig. 2, and fig. 5 is an exploded perspective view for describing an installation process of a fixing member in the configuration of fig. 2.

As shown in fig. 2 to 5, an antenna device 100 according to an embodiment of the present invention includes: an antenna housing part 110 forming left, right and rear side appearances of the antenna device 100; and an antenna cover panel 300 forming a front appearance of the antenna device 100, configured to shield an open front of the antenna housing part 110, and to protect internal parts (including a main board 120 and an antenna radio frequency module 200 described later) provided in an internal space 110S of the antenna housing part 110 from external influences.

Also, as shown in fig. 2 to 5, the antenna device 100 according to an embodiment of the present invention may further include: a main board 120 disposed closely to the inner space 110S of the antenna housing part 110; a PSU board portion 130 provided on the upper side of the main board 120; an RFIC substrate section 140 provided between the pair of main boards 120; and a surge substrate part 150 provided at a lower portion of the main board 120, and may further include an antenna radio frequency module (Radio Frequency Module) 200 (hereinafter, simply referred to as "radio frequency module") provided in a stacked manner at a front surface of the main board 120.

The antenna housing portion 110 may be used to mediate the coupling with a retaining bar, not shown in the drawings, that is provided for mounting the antenna device 100.

The antenna housing part 110 is composed of a metal material excellent in heat conductivity so as to facilitate the dissipation of heat generated due to heat conduction, and may be formed in a rectangular parallelepiped box shape having a thickness in the front-rear direction that can be accommodated in the front end of the radio frequency module 200 described later.

On the other hand, the inner surface of the antenna housing portion 110 may be formed in a shape matching the shape of a protruding contour formed by a digital element (FPGA element or the like) built in the back surface of the main board 120 and/or a back-surface PSU element or the like built in the PSU board portion 130 and a surge fitting built in the back surface of the surge substrate portion 150. This is to maximize heat dissipation performance by maximizing the area of thermal contact with the back surfaces of the motherboard 120, PSU board portion 130, and surge substrate portion 150.

Meanwhile, the front surface of the main board 120 may be provided with a female socket part 125 connected with a male socket part 235 of an LNA board part 231 of an amplifying element part 230 formed in a configuration of the antenna radio frequency module 200 manufactured in a module unit described later by a socket pin connection method, and at the same time, the front surface of the main board 120 may be provided with a pin coupling part 123 connected with first connection pin terminals 281 of a left filter part 240A and a right filter part 240B in the configuration of the antenna radio frequency module 200 by a socket pin connection method.

Although not shown in the drawings, left and right sides of the antenna housing part 110 may be further provided with handrails capable of being gripped for a worker to carry the antenna device 100 according to one embodiment of the present invention on site or to facilitate manual installation of a holding rod (not shown).

Further, various outside mounting members 400, which are not shown, connected to the base station apparatus cable and used for coordinating internal accessories, may be penetratingly mounted outside the lower end of the antenna housing portion 110. The outer mounting member 400 is provided in the form of at least one cable connection terminal (socket), each of which may be connected to a connection terminal of a coaxial cable (not shown) to each other.

Referring to fig. 2 to 5, a plurality of rear heat sinks 111 may be integrally formed at the rear surface of the antenna housing part 110 to have a predetermined pattern shape. However, the plurality of rear heat sinks 111 are not necessarily integrally formed on the rear surface of the antenna housing portion 110, but may be manufactured as separate fittings and then coupled to the rear surface of the antenna housing portion 110 by various coupling methods including a laser welding method or the like.

Among them, heat generated from the heating elements mounted on the main board 120, PSU board 130, RFIC board substrate section 140, and surge board section 150 of the internal space 110S of the antenna housing section 110 can be directly dissipated rearward by the plurality of rear heat sinks 111.

As shown in fig. 2 to 5, the plurality of rear heat sinks 111 are configured to be gradually inclined upward toward the left and right ends with reference to the upper and lower portions connecting the centers of the left and right widths, so that heat emitted to the rear of the antenna housing portion 110 forms upward airflows dispersed toward the left and right sides, respectively, thereby allowing the heat to be dissipated more rapidly. However, the shape of the plurality of rear fins 111 is not necessarily limited thereto. For example, although not shown in the drawings, when a blower fan module (not shown) is further provided at the rear surface side of the antenna housing part 110 to promote the smooth flow of external air, a plurality of rear heat sinks 111 may be formed in parallel with left and right ends of the blower fan module provided in the middle, respectively, so that the emitted heat is more rapidly discharged through the blower fan module.

On the other hand, the antenna cover panel 300 may be coupled with the front end of the antenna housing portion 110, and the hook coupling portion 310 formed along the edge of the antenna cover panel 300 may be hook-coupled to the front end coupling rib (not shown) side of the antenna housing portion 110.

Wherein a rubber waterproof gasket ring 180 may be interposed between the front end edge of the antenna housing part 110 and the antenna cover panel 300, and the coupling force provided when the antenna cover panel 300 is coupled to the antenna housing part 110 by a hook elastically deforms the waterproof gasket ring 180, so that a sealing function may be performed.

On the other hand, as shown in fig. 3 to 5, the antenna device 100 according to an embodiment of the present invention may further include a fixing member 280, the fixing member 280 being used to fix the unit rf filter body 210 of each rf module 200 when the antenna rf module 200 is mounted.

As shown in fig. 5, a fixing member 280 is located at an inner side portion of a plurality of left and right through holes 171 configured such that left and right end portions penetrate left and right side walls of the antenna housing part 110, and the fixing member 280 may be fixed by penetrating a plurality of assembly screws 173 from the outside into the plurality of left and right through holes 171 and fastening to screw fastening holes 281 formed at the left and right end portions.

When the plurality of left and right through holes 171 formed in the antenna housing part 110 and the plurality of assembly screws 173 fastened thereto are exposed to the outside, aesthetic appearance may be deteriorated, and thus, as shown in fig. 2 to 5, the plurality of left and right through holes 171 may be covered from the outside by attaching a separate cover film 175.

Also, a plurality of module fixing screw holes 283 are formed at intervals in the left-right direction on the fixing member 280, and each of the radio frequency modules 200 can be stably fixed by fastening a plurality of assembly screws (not shown) into module fixing screw fastening holes 275 formed in the reflector plate 270, wherein the reflector plate 270 is mounted as a constituent part of the radio frequency module 200 in the inner space 110S of the antenna housing part 110.

In recent years, with the increase in the number of multiband operation base stations of an extended band, telecom operators have come to realize that PIM (passive intermodulation ) phenomenon has become a serious problem.

PIM phenomenon is a phenomenon caused by radio interference, and is generally mainly caused by electric waves of various frequencies and rusted metal. However, the PIM phenomenon does not necessarily occur only due to the two factors described above, for example, in the case of applying the MIMO (Multi-Input & Multi-Output) technology, since the antenna housing part 110 has a long length in the up-down direction, slight warpage occurs due to biased concentrated heat generated by a heating element operated for the start thereof, and the like, and the nonlinearity (metal contact error) of the contraction resistance between the electrical connection elements generated at this time may cause PIM problems.

Among them, the fixing member 280 is preferably a non-conductive material (e.g., plastic resin-based material), and the plurality of assembly screws (not shown) are also preferably a plastic resin-based material in order to minimize the influence of PIM and minimize the influence on the Ground (GND) effect of the reflector plate 270, which will be described later.

Also, although not shown in the drawings, the antenna device 100 according to an embodiment of the present invention may further include a buffer portion attached to the front end of the fixing member 280, and made of silicone rubber. The buffer is mounted on a fixing member 280 for reducing internal impact between the fittings, wherein the fixing member 280 is used for fixing the respective unit rf filter bodies 210.

Since the main board 120 is modularly manufactured as described above and since the coupling force of each of the radio frequency modules 200 depends on the extremely weak coupling force of the male socket part 235 of the LNA board part 230 and the first connection pin terminal 281 of the frequency filter body 210 as described below, it is difficult to maintain PIM characteristics, and for this reason, PIM problems can be solved by using the fixing member 280 capable of firmly fixing and supporting each of the radio frequency modules 200. This will be described again when the respective configurations of the radio frequency module 200 are described in detail.

Fig. 6A and 6B are perspective views showing the front and rear surfaces of the antenna radio frequency module in the configuration of fig. 2, and fig. 7A to 7D are left side exploded perspective views and right side exploded perspective views of fig. 6A and 6B.

Referring to fig. 6A to 7D, one embodiment of an antenna radio frequency module 200 according to the present invention may include: the unit RF filter body 210 is arranged on the front surface of the main board 120; a radiating element part 220 disposed on the front surface of the unit rf filter body 210; and a reflector plate 270 forming a front surface of the unit rf filter body 210 and formed to be wider than an area of a vertical section of the unit rf filter body 210 for Grounding (GND) the radiating element portion 220.

The left and right sides of the unit rf filter body 210 may include left and right filter parts 240A and 240B, formed with a plurality of cavities C1 and C2 opened to the left and right outer sides, respectively, and including respective cavities C1 and C2 in which resonators R (resonators) are built to perform filtering of different frequencies. Hereinafter, description will be made by defining the left filter section 240A and the right filter section 240B to be located on the left side and the right side with reference to the front direction, respectively.

Further, the resonator R may be a bar-shaped resonator, but the shape thereof is not limited thereto, and it may be formed of a dielectric material such as ceramic or various materials such as metal.

The left filtering part 240A and the right filtering part 240B are designed as filters for 2.4G frequency bands and 5G frequency bands, respectively, so that a dual-band antenna can be implemented by one radio frequency module 200.

On the other hand, the radiating element portion 220 may be configured to generate at least two multipoles. Hereinafter, the radiation element part 220 realizing dual polarization among multiple polarizations will be described in detail as an example.

As shown in fig. 6A to 7D, may include: a base plate 221 disposed on a front surface of the reflector plate 270; a power feeding base 223 attached to the base plate 221, electrically connected to the left and right filter parts 240A and 240B, and arranged in an X-shaped cross; and a radiation guide plate 225 provided at the front end of the power feeding base 223. In one embodiment of the present invention, the power feeding chassis 223 is defined to be arranged in an intersecting manner in an "X" shape with respect to the chassis plate 221, however, the arrangement form is not limited thereto, and the arrangement forms of the "mouth" shape, the "H" shape, and the "cross" shape are not excluded.

The radiation guide plate 225 is formed in a substantially square shape, and the power feeding bases 223 are disposed to diagonally support respective corners of the radiation guide plate 225, and the respective feeding ends extend to the centers of the respective edges of the radiation guide plate 225 and are connected by feeder lines, so that the respective power feeding bases 223 can generate respective polarized waves and realize dual polarized waves.

The base plate 221 may be electrically connected to mediate transmission of the respective transmission signals from the left and right filtering parts 240A and 240B formed at the left and right sides of the unit rf filtering body 210 and transfer of the reception signals from the radiation guide plate 225. The electrical connection mechanism of the base plate 221 and the respective filter parts 240A and 240B will be described in more detail later.

It should be noted that in the antenna radio frequency module 200 according to an embodiment of the present invention, the radiating element portion 220 is limitedly described as any one of a patch type and a dipole type, but is not necessarily limited thereto, wherein the application of the air strip antenna is not excluded.

On the other hand, as shown in fig. 6A to 7D, the antenna radio frequency module 200 according to an embodiment of the present invention may further include an amplifying element part 230, which is provided on any one of the upper and lower surfaces of the front and rear thickness parts of the unit radio frequency filter body 210, and includes an LNA substrate part 231 in which at least one analog amplifying element (not shown) is built.

On the other hand, as shown in fig. 6A to 7D, the amplifying element part 230 may include an LNA substrate part 231, the LNA substrate part 231 being located in a substrate mounting space 230S provided at any one of upper and lower surfaces of a thickness part forming the unit rf filter body 210.

At least one LNA element (not shown) which is one of analog amplifying elements having a relatively small heat generation amount and which can amplify a received signal may be incorporated in the LNA board 231.

Generally, the rf module is an aggregate of analog rf components, for example, the amplifying element part 230 has an analog amplifying element for amplifying an rf signal built therein, and the rf module 200 according to one embodiment of the present invention is designed such that only an LNA element having a relatively small heat generation amount among the analog amplifying elements is separated from the main board 120 and is disposed in the unit rf filter body 210. Also, the left and right filter parts 240A and 240B may be defined as filter accessories for frequency-filtering an input radio frequency signal into a desired frequency band, and the radiating element part 220 may be defined as a radio frequency accessory for receiving and transmitting the radio frequency signal.

Among them, the LNA board portion 231 may be electrically connected with the respective cavities C1 and C2 of the left and right filter portions 240A and 240B formed on the left and right sides of the unit rf filter body 210. The electrical connection mechanism of the LNA board section 231 and the respective filter sections 240A and 240B will be described in more detail later.

The substrate mounting space 230S where the LNA substrate portion 231 is provided may be covered with an amplifying portion cover plate 237, and an amplifying portion heat sink (not shown) for radiating heat inside the substrate mounting space 230S in a heat conduction manner may be integrally formed on an outer surface of the amplifying portion cover plate 237. The heat emitted by the amplifying portion heat sink may radiate heat to the outside through the side portion of the antenna housing portion 110.

Thus, only the embodiment in which the LNA elements among the plurality of analog amplifying elements built in the existing main board 120 are individually separated and disposed at the unit rf filter body 210 side to form the amplifying element part 230 may be defined as a constitution having a great effect on improving the above-described PIM problem.

That is, when the LNA element is not separated from the main board 120 and built in the main board 120 together with other heat generating elements, the mounting interval of the plurality of analog amplifying elements is necessarily narrowed, and when these analog amplifying elements generate operation heat, there is a relatively large risk of occurrence of warpage due to concentrated heat of deflection of the antenna housing portion 110 formed long in the up-down direction.

However, it is needless to say that the unit rf filter body 210 does not necessarily include the amplifying element part 230, and in various embodiments, the amplifying element part 230 may not be separated from the existing main board 120 or may not be provided on the unit rf filter body 210 even if it is separated from the main board 120.

On the other hand, as shown in fig. 6A to 7D, the front surface of the unit rf filter body 210 may be formed with a reflector plate 270.

The reflector plate 270 may prevent the electric wave (beam) radiated from the radiating element part 220 coupled to the front end portion of the unit radio frequency filtering body 210 from penetrating to the rear side, and may serve as the Ground (GND) of the radiating element part 220.

Further, module fixing screw fastening holes 275 may be formed at upper and lower ends of the reflector plate 270 for fastening a plurality of assembly screws (not shown) for fixing screws through the fixing member 280 described with reference to fig. 2 to 5.

As described above, the fixing member 280 serves to compensate for the weak coupling force to the main board 120 of the unit rf filter body 210, and it is possible to improve PIM problems due to the flow or gap of the unit rf filter body 210 by stably fixing the respective unit rf filter bodies 210 at the front end during the assembly to the left and right inner walls of the inner space 110S of the antenna housing part 110, respectively.

Fig. 8A and 8B are exploded perspective views for describing a coupling relationship of a unit rf filter body of a radiating element part in the configuration of an antenna rf module, and fig. 9 is a cutaway perspective view and a partial enlarged view showing a state of mutual electrical connection of third connection pin terminals shown in fig. 8A and 8B.

As shown in fig. 8A and 8B, the left and right filter parts 240A and 240B respectively formed at the left and right sides of the unit rf filter body 210 may be electrically connected via at least one first connection pin terminal 281 of the pin bonding part 123 provided at the front surface of the main board 120.

More specifically, the rear side of the unit rf filter body 210 may include at least one input/output port 287 for passing the transmission signal through the left and right filter parts 240A and 240B, respectively.

Wherein at least one input/output port 287 electrically connects the main board 120 with the left and right filter parts 240A and 240B through the above-described first connection pin terminal 281.

Wherein, the rear end of the at least one first connection pin terminal 281 may be welded to the front surface of the main board 120 to improve the PIM problem described above.

On the other hand, referring to fig. 7A and 7B, the substrate 221 of the radiating element portion 220 may be electrically connected through at least one third connection pin terminal 283 so as to mediate the transfer of the respective transmission signals from the left and right filter portions 240A and 240B and the reception signal from the radiation guide plate 225.

Here, the third connection pin terminal 283 may be welded and fixed by a bonding method such as welding after being bonded to the base plate 221 by a terminal pin bonding method.

More specifically, the left and right filter parts 240A and 240B and the front radiating element part 220 may penetrate the reflector plate 270 and be electrically connected to each other.

For this, the front surface of the unit rf filter body 210 forming the reflector plate 270 may be formed with a pair of pin terminal mounting holes 271 penetrating in the front-rear direction, and the third connection pin terminal 283 may be penetrated and mounted to the pair of pin terminal mounting holes 271.

The pair of pin terminal mounting holes 271 may be configured in the number of electrical connections with the cavity C1 of the left filter part 240A and the cavity C2 of the right filter part 240B, respectively.

In particular, in order to improve the aforementioned PIM problem, one end portion of the at least one third connection pin terminal 283 on the base plate 221 side is welded to the base plate 221, and thus has an advantage of reducing a metal contact error (nonlinearity of the shrink resistance).

Fig. 10 is an exploded perspective view for describing a coupling relationship of a unit rf filter body of an amplifying element part in the configuration of an antenna rf module, and fig. 11 is a cross-sectional perspective view and a partial enlarged view showing a state of mutual electrical connection of second connection pin terminals shown in fig. 10.

As shown in fig. 10 and 11, the LNA board 231 may be accommodated in the amplifying element part 230, and the LNA board 231 is formed by incorporating at least one LNA element in the board mounting space 230S integrally formed on any one of the upper and lower surfaces of the unit rf filter body 210.

The substrate mounting space 230S is formed with a through slit 239 penetrating toward the rear side of the unit rf filter body 210, and a male socket part 235 formed in the LNA substrate part 231 is penetrated through the through slit 239 and coupled to a female socket part 125 provided on the main board 120 in a socket pin coupling manner, so that electrical connection of the received signal can be made.

The LNA board 231 has only at least one LNA element incorporated therein for performing a function of amplifying a reception signal received from the radiation element 220 of the analog amplification element via the left filter 240A or the right filter 240B, and the main board 120 may have at least one PA (Tx-amp) element incorporated therein in addition to the LNA element incorporated in the LNA board 231.

Since the heat generation amount of the PA element built in the main board 120 is much larger than that of the LNA element, by being designed to separate and disperse the LNA element from the main board 120 to the radio frequency module 200 side, the interval between the respective heating elements built in the main board 120 can be widened, and thus the heat concentration generated by the heating elements can be prevented, so that the overall heat radiation performance can be improved.

On the other hand, referring to fig. 10 and 11, the lna board part 231 may be electrically connected with the respective cavities C1 and C2 of the left and right filter parts 240A and 240B formed on the left and right sides of the unit rf filter body 210 via at least one second connection pin terminal 282.

For this, the unit rf filter body 210 may be formed with pin mounting holes (reference numerals are not shown) penetrating the substrate mounting space 230S and the cavity C1 of the left filter part 240A and the cavity C2 of the right filter part 240B.

The second connection pin terminal 282 may be fixed to the LNA board 231 by welding or the like after being mounted through the pin mounting hole.

Wherein an end of the at least one second connection pin terminal 282, which is close to the LNA substrate part 231, may be welded and fixed to the LNA substrate part 231 to improve the PIM problem described above.

As described above, the antenna radio frequency module 200 according to an embodiment of the present invention has an advantage in that it can maintain PIM characteristics not only by improving built-in fitting flow and gap problems occurring due to weak coupling force of the first connection pin terminal 281 and the male socket part 235 of the LNA substrate part 231 to the main board 120, but also by fixing the first connection pin terminal 281, the second connection pin terminal 282, and the third connection pin terminal 283 by welding, respectively.

In another aspect, the antenna radio frequency module 200 according to an embodiment of the present invention may further include: a left tuning cover 250A and a right tuning cover 250B combined to cover the respective cavities C1 and C2 of the left and right sides of the unit rf filter body 210; and left and right filter covers 260A and 260B for covering Zuo Diaoxie cover 250A and right tuning cover 250B.

Tuning slots 251 may be formed at the left tuning cover 250A and the right tuning cover 250B to perform precise frequency tuning by adjusting the separation distance from the resonators R of the cavities C1 and C2.

The frequency filtering process in each of the cavities C1 and C2 of the unit rf filtering body 210 must be performed in a completely sealed state, and the PIM problem described above may occur when the sealing is not complete or the sealing performance is reduced due to the increase of the use time.

As described above, in order to prevent PIM problem from occurring in advance, the left and right filter covers 260A and 260B including the left and right tuning covers 250A and 250B may be attached to the unit rf filter body 210 by laser welding.

On the other hand, the antenna device 100 according to the embodiment of the present invention may be a concept including all of the above-described antenna radio frequency modules 200.

More specifically, as shown in fig. 2 to 5, an antenna device 100 according to an embodiment of the present invention includes: an antenna housing portion 110 formed in a box shape with an open front surface; a main board 120 which is laminated against the inner surface of the antenna housing part 110; and a plurality of antenna radio frequency modules 200 arranged on the front surface of the main board 120, wherein the plurality of antenna radio frequency modules 200 include: the unit RF filter body 210 is arranged on the front surface of the main board 120; a radiating element part 220 disposed on the front surface of the unit rf filter body 210; an amplifying element part 230 provided on any one of upper and lower surfaces which are front and rear thickness parts of the unit rf filter body 210, and including an LNA substrate part 231 in which at least one analog amplifying element is built; and a reflector plate 270 formed to extend wider than a front surface area of the unit rf filter body 210 at a front end surface of the unit rf filter body 210 for Grounding (GND) the radiating element portion 220, wherein left and right filter portions 240A and 240B are disposed at left and right sides of the unit rf filter body 210, a plurality of cavities C1 and C2 are formed to be opened to left and right outer sides, respectively, and resonators R are built in the respective cavities C1 and C2 to perform filtering of different frequencies.

In the above, an embodiment of an antenna radio frequency module and an antenna device including the same according to the present invention is 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 various modifications and implementations may be made within the scope and range of equivalents as will be apparent to those skilled in the art to which the present invention pertains. Accordingly, the actual scope of the invention is to be defined in the following claims.

Claims (16)

1. An antenna radio frequency module, comprising:

the unit radio frequency filter body is arranged on the front surface of the main board;

the radiating element part is arranged on the front surface of the unit radio frequency filter body; and

a reflector plate forming a front surface of the unit RF filter body and formed wider than an area of a vertical section of the unit RF filter body, and for grounding the radiating element portion,

wherein the left and right sides of the unit RF filter body are provided with left and right filter parts, a plurality of cavities respectively opening to the left and right outer sides are formed therein, and resonators are respectively built in the plurality of cavities to perform filtering of different frequencies,

the left filter part and the right filter part penetrate the reflector plate and are electrically connected to the radiating element part.

2. The antenna radio frequency module of claim 1, wherein,

the reflector plate is formed with a pair of pin terminal mounting holes through which third connection pin terminals for mediating transmission signals and reception signals of the left and right filter parts and the radiating element part are penetrated and mounted.

3. The antenna radio frequency module of claim 1, wherein,

the radiating element portion is configured to generate at least one of multiple polarizations.

4. The antenna radio frequency module of claim 2, wherein,

the radiating element section includes:

a base plate disposed on a front surface of the reflector plate;

a power supply feed base attached to the base plate and electrically connected to the left and right filter parts; and

and the radiation guide plate is arranged at the front end part of the power supply feed base.

5. The antenna radio frequency module of claim 4, wherein,

the third connection pin terminal is welded to the base plate.

6. The antenna radio frequency module of claim 1, further comprising:

an amplifying element section provided on any one of upper and lower surfaces of front and rear thickness sections as the unit radio frequency filter body, and including an LNA substrate section in which at least one analog amplifying element is built.

7. The antenna radio frequency module of claim 5 wherein,

the amplifying element part is configured with the LNA substrate part in a substrate mounting space arranged on or below a front-rear thickness part forming the unit radio frequency filter body;

the LNA substrate part is electrically connected with each cavity of the left filter part and the right filter part formed at the left side and the right side of the unit radio frequency filter body.

8. The antenna radio frequency module of claim 6, wherein,

the LNA substrate part is formed with a male socket part so as to be combined with the main board by a socket pin combination mode,

a through slit is formed in the substrate mounting space, and the through slit penetrates through the male socket part of the LNA substrate part.

9. The antenna radio frequency module of claim 6, wherein,

at least one LNA element is built in the LNA substrate part, the LNA element is used for amplifying the received signal received from the radiation element part through the left filtering part or the right filtering part,

the motherboard has at least one PA element other than the LNA element built therein,

the heat generated from the at least one PA element is radiated to the rear of the antenna housing on which the motherboard is laminated.

10. The antenna radio frequency module of claim 7, wherein,

the unit radio frequency filter body is provided with a pin mounting hole which penetrates through the substrate mounting space, the cavity of the left filter part and the cavity of the right filter part,

the LNA substrate part, the left filter part and the right filter part are electrically connected through at least one second connection pin terminal installed in the pin installation hole,

the second connection pin terminal is solder-fixed to the LNA substrate part.

11. The antenna radio frequency module of claim 1, wherein,

the unit radio frequency filter body comprises at least one input/output port for transmitting transmission signals through the left filter part and the right filter part,

the at least one input/output port is electrically connected with the main board, the left filter part and the right filter part through at least one first connection pin terminal.

12. The antenna radio frequency module of claim 11, wherein,

the at least one first connection pin terminal is solder-fixed to the front surface of the main board.

13. An antenna device, comprising:

an antenna housing part formed in a box shape with an open front;

A main board which is arranged in a layered manner against the inner surface of the antenna housing part;

a plurality of antenna radio frequency modules arranged on the front surface of the main board,

wherein the plurality of antenna radio frequency modules comprises:

the unit radio frequency filter body is arranged on the front surface of the main board;

the radiating element part is arranged on the front surface of the unit radio frequency filter body; and

a reflector plate forming a front surface of the unit RF filter body and formed wider than an area of a vertical section of the unit RF filter body, and for grounding the radiating element portion,

wherein the left and right sides of the unit RF filter body are provided with a left filter part and a right filter part, wherein a plurality of cavities respectively opening to the left and right outer sides are formed, and resonators are respectively built in the plurality of cavities to perform filtering of different frequencies,

the left filter part and the right filter part penetrate the reflector plate and are electrically connected to the radiating element part.

14. The antenna device according to claim 13, wherein,

the plurality of antenna radio frequency modules further comprises:

and an amplifying element section provided on any one of upper and lower surfaces of a front-rear thickness section as the unit radio frequency filter body, and including an LNA substrate section in which at least one analog amplifying element is built.

15. The antenna device according to claim 14, wherein,

the radiating element portion includes a base plate disposed on a front surface of the reflector plate,

the left filter part and the right filter part are welded and fixed to the front surface of the main board so as to be electrically connected with the main board by taking the first connecting pin terminal as a medium,

the left filter section and the right filter section are welded and fixed to the LNA substrate section so as to be electrically connected to the LNA substrate section via a second connection pin terminal,

the left filter part and the right filter part are welded and fixed to the base plate so as to be electrically connected with the base plate with the third connection pin terminal as a medium.

16. The antenna device of claim 13, further comprising:

a fixing member, the left end and the right end of which are fixed on the left side wall and the right side wall of the antenna shell part and are used for respectively fixing the unit radio frequency filter body,

the fixing member is made of a non-conductive material.