KR20220014829A - Antenna assembly and manufacturing method of the same - Google Patents

Abstract

The present invention relates to an antenna assembly and a manufacturing method thereof. The antenna assembly comprises at lase one radiation element made of a first metal material, and a base panel made of the first metal material or a second metal material different from the first metal material and including a fixing member spacing the radiation element apart from one surface. The present invention provides an advantage of reducing manufacturing costs and manufacturing time.

Description

Antenna assembly and manufacturing method thereof

The present invention relates to an antenna assembly and a method for manufacturing the same, and more particularly, to an antenna assembly capable of assembling in an automated process in which a plurality of conventional components such as a reflector and a dielectric structure are deleted.

A base station antenna including a repeater used in a mobile communication system has various shapes and structures, and has a structure in which a plurality of radiating elements are appropriately disposed on at least one reflecting plate that is usually erected in the longitudinal direction.

Recently, studies to achieve a miniaturization, light weight, and low-cost structure while satisfying the high-performance requirements for multiple input/output (MIMO)-based antennas are being actively conducted. In the case of an antenna device, a method of plating a radiating element made of a dielectric substrate made of a plastic or ceramic material and bonding it through soldering to a printed circuit board (PCB) is widely used.

As a prior art related to a representative base station antenna, there may be mentioned Unexamined Patent Publication No. 10-2011-0054150 (published on May 25, 2011) previously filed by the present applicant.

According to the disclosed patent, the patch-type first radiating element 11 and the dipole-type second radiating element 21 are laminated on one surface based on the reflector 1, and the first radiation is applied to the other surface with respect to the reflector 1 as a reference. A circuit board 111 for feeding the device 11 and a feeding line (for example, a feeding cable) disposed to pass through the circuit board 111 and for feeding power to the second radiating device 21 should be provided. In this regard, there was a problem in that a relatively large amount of space required for installing it on the back side of the reflector 1 was required.

In order to solve this problem, the present applicant, as disclosed in Patent Registration No. 10-1609665 (2016.04.06. Announcement), is disposed in the shape of an X between the reflector 1 and the first radiating element 14 to the corresponding patch A plurality of first feed lines 142 for providing a feed signal to the plate 140 are configured, and a feed cable structure extending from the reflector 1 or a second radiation element 13 as a strip line structure for signal coupling. Although a second feed line connected to It should be installed to maintain a relatively high position on the reflector 1 so that the corresponding coupling signal transmission portion has an appropriate separation distance from the patch plate 140, while stably supporting the installation state of a plurality of signal coupling strip lines. And in order to fix it, there is a problem that a support of an appropriate shape formed of a synthetic material such as Teflon (dielectric) must be reinforced.

In addition, in the prior art, after laminating and bonding the reflector 1 to one surface of the substrate for an antenna (not shown), the circuit board related to the first feed line 142 is arranged in an X-shape, and then manufactured from a plastic material. While manually stacking the first radiation elements 14 manufactured by plating on the outer surface of the patch plate, an assembly method of connecting by a soldering method using a solder cream pre-applied to the feed signal connection area is adopted, but the cost increases and the manufacturing process is complicated, and the problem of non-uniformity between soldering due to a plurality of soldering points is the main cause of antenna failure.

Republic of Korea Patent Publication No. 10-2011-0054150 (published on May 25, 2011) Republic of Korea Patent Publication No. 10-1609665 (2016.04.06. Announcement)

The present invention has been made to solve the above technical problem, and an object of the present invention is to provide an antenna assembly capable of constructing an automated assembly process and a manufacturing method thereof.

In addition, the present invention is a bar that can be assembled by a strip line for signal coupling and a laser point welding method without a separate plating process after manufacturing the radiating element and the base panel with a first material or a second material through a die-casting mold or a press mold, assembling Another object of the present invention is to provide an antenna assembly that is easy to automatically build a line and a method for manufacturing the same.

Another object of the present invention is to provide an antenna assembly having a high gain and a method for manufacturing the same, since a plurality of strip lines for signal coupling arranged in series with respect to each feed feeding point of the radiating element can be connected. do it with

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

One embodiment of the antenna assembly according to the present invention is formed of at least one radiation element formed of a first metal material and a second metal material different from the first metal material or the first metal material, and the radiation element has one surface At least one strip line for signal coupling disposed on the other surface of the base panel and the base panel including a fixing member spaced apart from the base panel and connected to the radiating element through the base panel to provide a power supply signal to the radiating element may include

Here, for the power supply to the radiating element, the radiating element and the base panel may form an electrical ground as a whole.

In addition, the base panel may further include at least one barrier rib formed to minimize signal interference between adjacent radiating elements.

In addition, each of the radiating element and the base panel may be manufactured using a die casting mold or a press mold.

In addition, the first material of the radiating element may include a metal material or a plastic having a metal-plated surface.

In addition, the second material of the base panel may include an aluminum material or a magnesium material.

In addition, the radiating element may be formed in a disk or polygonal shape.

In addition, the strip line for signal coupling is branched and extended from the stripline body and the stripline body formed in a straight line to correspond to a straight line connecting any one of the feeding points of the radiating element arranged in a line, and the radiating element It may include a plurality of through terminals connected to any one of the feeding points of.

In addition, the plurality of through terminals may be connected to pass through the radiating element, or may be connected to a plurality of extension connection legs extending from the radiating element toward the bottom surface of the base panel.

In addition, the radiating element may be provided with a laser transmission cutout in which a part of the edge is cut for laser point welding connection with the plurality of through terminals through the plurality of extension connection legs.

In addition, at the ends of the plurality of extension connection legs, a feed connection hole into which the plurality of through terminals are inserted is formed through, and in the plurality of extension connection legs, an end at which the feed connection hole is formed is directly under the laser transmission cutout. It can be extended to be positioned in a room.

In addition, the fixing member is formed to protrude from the center of the bottom surface formed by each of the partition walls, and the radiating element has a fixing member through hole through which the upper part of the fixing member to which the radiating element can be mounted passes. each can be formed.

In addition, the radiating element and the signal coupling strip line, and the radiating element and the fixing member may be connected by a laser point welding method.

In addition, the radiating element is provided as a double polarized patch element that generates either a ±45 degree polarized wave or a vertical/horizontal polarized wave, and the stripline for signal coupling is a feeding point of the radiating element arranged in a line It may be provided in the form of a straight line connected to any one of them at the same time.

In addition, the feed signal is simultaneously supplied through a pair of signal coupling striplines arranged adjacently among the signal coupling striplines, and after supplying the feed signal in parallel to the center point of the radiating elements arranged in a line , the feed signal is branched in a linear direction on one side and a linear direction on the other side, and may be supplied in series, respectively.

In addition, a plurality of ground accommodating ribs may be integrally formed on the other surface of the base panel to separate and accommodate the plurality of signal coupling striplines.

An embodiment of the method for manufacturing the antenna assembly according to the present invention includes a radiation material manufacturing step of manufacturing a mold using a die casting method or a press method for a radiation element using a molding material of a first metal material, the same material as the first metal material Or a base panel manufacturing step of manufacturing a base panel by a die casting method or a press method using a molding material of a material different from the first metal material, and a strip line for signal coupling provided to penetrate through the base panel and the base panel and a fixing step of coupling each of the radiating elements to each other by a laser point welding method using a laser welding apparatus.

Here, in the radiation material manufacturing step, when a pair of extension connection legs extending a predetermined length from one surface of the radiation element are further provided, a laser transmission cutout for coupling the laser point welding method to the radiation element is formed. can be implemented.

According to an embodiment of the antenna assembly and the manufacturing method thereof according to the present invention, the following various effects can be achieved.

First, a metal material is used to mold a spinning material and a base panel by a die-casting method or a press method, and as compared to the prior art, it is possible to omit the configuration of a printed circuit board (PCB), a power supply cable and a reflector, so it has an effect of reducing costs.

Second, compared to the conventional method of manufacturing the spinning material with plastic or ceramic material, the solder process using solder cream application can be eliminated as well as the separate plating process can be eliminated, so that a uniform soldering design in the solder process is not required, It has the effect of greatly reducing the cost of the plating process as well as the assembly man-hours.

Third, since the automation of the assembly process can be easily established due to the deletion of the soldering process that was performed manually, it is possible to shorten the manufacturing time as well as to secure the accuracy of the assembly.

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

1 is a perspective view showing the appearance of an embodiment to which a circular patch plate is applied among the configurations of an antenna assembly according to an embodiment of the present invention;
Figure 2 is an exploded perspective view of Figure 1,
3 is a front view of the rear side of the base panel and a stripline for signal coupling in the configuration of FIG. 1;
4 is a schematic diagram for explaining the feeding state of the feeding signal to the radiating element using a stripline for signal coupling and the implementation of double polarization,
5 is a cross-sectional view taken along line AA of FIG. 1 and a partially enlarged view thereof;
6 is a cross-sectional view taken along line BB of FIG. 1 and a partially enlarged view thereof;
7 is a cutaway perspective view taken along line CC of FIG. 1 and a partially enlarged view thereof;
8 is a perspective view showing the appearance of an embodiment to which a modified patch plate is applied among the configurations of the antenna assembly according to another embodiment of the present invention;
9 is an exploded perspective view of FIG. 8;
10 is a cross-sectional view taken along line DD of FIG. 8 and a partially enlarged view thereof;
11 is a cross-sectional view taken along line EE of FIG. 8 and a partially enlarged view thereof;
12 is a cutaway perspective view taken along line FF of FIG. 8 and a partially enlarged view thereof;
13 is a conceptual diagram for explaining a power feeding process of an antenna assembly according to embodiments of the present invention.

Hereinafter, an antenna assembly and a method of manufacturing the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. In addition, unless otherwise defined, 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 invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

1 is a perspective view showing the appearance of an embodiment to which a circular patch plate is applied among the configurations of an antenna assembly according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a base panel of the configuration of FIG. A back view and a front view of a stripline for signal coupling.

The antenna assembly 100 according to an embodiment of the present invention, as shown in FIGS. 1 to 2 , a patch type or a dipole type radiating element 120 formed of a first material. and a plate-shaped base panel 110 formed of the same material as the first material or a second material different from the first material, and disposed on the other surface of the base panel 110, the radiation element arrangement of a predetermined frequency band A plurality of through terminals 133 spaced apart at a satisfactory interval are connected to each of the radiating elements 120 through the base panel 110, and a plurality of signal coupling striplines that provide a power supply signal to the radiating elements 120 (130).

The radiating element 120 may be adopted as either or both of the patch type or the dipole type, and even if any one type is adopted, it does not mean that the other one is excluded.

Hereinafter, for convenience of explanation, the radiating element 120 is limited to a patch-type radiating element 120 , but as described through the group of drawings in FIGS. 1 to 6 , a disc shape among the patch types. One embodiment implemented as a patch type of , and another embodiment implemented as a polygonal patch type modified from a disk-shaped patch type, as described with the group of drawings of FIGS. 7 to 11, which will be described later. Explain.

The patch-type radiating element 120 may be formed in a circular plate shape, as shown in FIGS. 1 to 3 (hereinafter, referred to as a "circular-type patch plate", indicated by reference numeral 120). abbreviated as The circular-type patch plate 120 may be formed of a first material. Here, the first material includes a metal material or a plastic having a metal plated surface, and may preferably be an aluminum material. In particular, for the processing of the patch plate 120 of the circular type, various methods such as press working, die casting processing, etc. may be considered, but preferably, a manufacturing method of a die casting method suitable for a mass production manufacturing method may be adopted.

According to this, in the conventional case, the patch-type radiating element 120 is formed with a dielectric substrate such as plastic or ceramic, and then the outer surface is coated by a plating process for the purpose of corrosion prevention and electrical solder connection with the power supply line. , gold material is used as the plating material, so there is a problem in that the cost is greatly increased. Since it can be manufactured, a separate plating process is unnecessary, while a power feeding structure by a feed line to be described later is very simple, and double polarization can be easily implemented.

As shown in FIGS. 1 to 3 , in the circular-type patch plate 120 , the front ends of a plurality of through terminals 133 are inserted and penetrated in the configuration of at least one signal coupling stripline 130 to be described later. The two power feeding connection holes 123 may be formed to be spaced apart from each other by a predetermined distance in the left and right width directions.

On the other hand, the base panel 110, as shown in Figs. 1 to 3, is formed of a metal material, performs a function as a reflector on which the patch-type radiation element 120 is disposed, and at the same time, the patch-type radiation element is disposed. It performs an electrical ground function as a whole together with the element 120 .

Specifically, in order to feed the patch radiating element according to the prior art, a ground plane is formed on the lower surface of the radiating element made of a dielectric substrate such as plastic or ceramic, and the interior of the coaxial line through coaxial feeding. A conductor is connected to the ground plane, and an external conductor passes through the dielectric substrate and is connected to a patch on the upper surface of the radiating element. However, according to the above structure, the ground plane and the patch plane of the patch radiating element are spatially separated, thereby complicating the power feeding structure, and there is a problem in that the patch radiating element must be coupled to the reflector through soldering or the like.

In contrast, according to the present invention, both the patch-type radiating element 120 and the base panel 110 are formed of a metal material to serve as a ground for feeding the radiating element as a whole, so that a separate ground plane There is no need to separate the patch surface from the space, so electrical design for power supply is very easy, and the radiation element 120 and the base panel 110 are coupled through a fixing member 115 and a welding process to be described later. The process also has the advantage of being simplified.

On the other hand, the base panel 110 is formed integrally with the panel body 111 formed in the form of a metal plate of a predetermined thickness and one surface of the panel body 111, and a predetermined partitioned space ( At least one partition wall (cavity wall) 112 provided to form 113), and a fixed spaced apart from the bottom surface of the partitioned space 113 (that is, one surface of the panel body 111) the radiating element 120 A member 115 may be included.

Here, the panel body 111, as already described, may be made of a first metal material or a second metal material, and include at least one partition wall 112 and a fixing member 115 and a plurality to be described later through a die casting method. The ground accommodating rib 114 of the can be molded simply and integrally.

On the other hand, the above-described partitioned space 113 is a kind of cavity (Cavity, space), a circular-type patch plate 120 spaced apart a predetermined distance in one direction from the bottom surface (ie, one surface of the panel body 111). It can be defined as the space that exists between the family members.

In more detail, the partitioned space 113 includes at least one partition wall 112 (cavity wall) forming a square shape in the area occupied by each radiating element 120 arranged on one side of the panel body 111 . It can be understood as a space 113 partitioned through.

Here, the shape of the at least one partition wall 112 may be formed in a circle corresponding to the outer shape of the circular-type patch plate 120 , as well as at least a side larger than the diameter of the circular-type patch plate 120 . It may be formed in a rectangle or a square having a length.

In this way, the space 113 partitioned by the at least one partition wall 112 has a meaning as a space filled with air having a permittivity of 1 except for the fixing member 115 formed at the center thereof, and the at least one partition wall It can be understood as a space in which signals are stabilized by limiting the inflow and outflow of external signals by 112 or minimizing signal interference with the adjacent radiating element 120 .

To this end, the height of the at least one barrier rib 112 (ie, the length protruding from one surface of the panel body 111 ) is optimal in consideration of the amount of inflow and outflow of the external signal and the amount of signal interference with the adjacent radiating element 120 . It is desirable to design with a value of . The optimum value of the height of the barrier rib 112 may be set to be the same as the separation distance of the radiating element 120 or to be formed to be smaller than the separation distance of the radiating element 120 at least.

In the conventional case, at a position corresponding to the partitioned space 113, the radiation element 120 is spaced apart from the reflective plate, and at the same time, a power supply line (eg, A power supply cable or a power supply PCB) was provided, and a structure of a Teflon member having a predetermined dielectric constant was additionally installed for reinforcement thereof, so that the structure was very complicated.

In the antenna assembly 100 according to an embodiment of the present invention, without additionally installing a separate reinforcing structure, the connection portion and the fixing member 115 of at least one signal coupling stripline 130 to be described later are excluded. And it has the advantage of minimizing signal interference with an external signal and the adjacent radiating element 120 by the space 113 partitioned by the at least one barrier rib 112 .

As shown in FIGS. 1 and 2 , the panel body 111 of the base panel 110 is formed to be long in the vertical direction, and is formed in a rectangular panel shape that is relatively smaller than the length in the vertical direction in the left and right directions. can be

On one surface of the panel body 111 , a plurality of partitioned spaces 113 in the form of a rectangular parallelepiped having a thin front and rear thickness (ie, the height of the partition wall 112 ) may be arranged in series in the vertical direction and the left and right directions, respectively. The number of partitioned spaces 113 formed on one surface of the base panel 110 may be set to be the same as the number of circular-type patch plates 120 that are respectively seated and fixed therein.

In this case, the circular-type patch plate 120 may be formed to be spaced apart from each other at intervals satisfying the arrangement of the radiating elements 120 of a predetermined frequency band. In general, an interval satisfying the arrangement of the radiating element 120 of a predetermined frequency band means an electrical separation distance between the adjacent circular-type patch plates 120, which means approximately 1λ distance.

Here, in the center of each partitioned space 113, the above-described fixing member 115 is formed to protrude, respectively, it may be formed to protrude to the outside with a size that protrudes more outward than the opposite surface of the patch plate 120 of the circular type. The fixing member 115 is preferably formed to protrude from the center of the bottom surface (ie, one surface of the panel body 111 ) formed by the partitioned space 113 . In addition, the fixing member 115 is formed in a cylindrical shape, in particular, its tip is formed to have a relatively small diameter, and is inserted into the fixing member through-hole 121 formed in the center of the circular-type patch plate 120 to be described later. However, the circular-type patch plate 120 is attached to the step portion (upper mounting portion) of the fixing member 115 having a relatively large diameter, so that the circular-type patch plate 120 is divided into the space 113 of the space 113 . It may be fixed to be spaced apart a predetermined distance from the floor surface.

In the center of the circular-type patch plate 120 , fixing member through-holes 121 through which each fixing member 115 is inserted may be formed, respectively. The fixing member through-hole 121 is formed in the center of the circular-type patch plate 120, and similarly in the deformable-type patch plate 220 applied to another embodiment to be described later, the deformable-type patch plate 220 ) is preferably set to be located at the center of the symmetrical shape.

Meanwhile, in the partitioned space 113 , a pair of panel through-holes 116 into which a plurality of through terminals 133 of at least one signal coupling stripline 130 to be described later are inserted and penetrated may be formed. . Preferably, the pair of panel through-holes 116 are formed at a position where signal interference caused by the plurality of through-terminals 133 occupied in the partitioned space 113 is minimized. More preferably, it may be set to be positioned adjacent to the partition wall 112 in the partitioned space 113 (see FIG. 7 to be described later).

At least one strip line 130 for signal coupling is fixed to the other surface of the panel body 111 of the base panel 110, respectively, as shown in FIG. 3 , and is a circular type positioned on one surface of the panel body 111 . It may include a plurality of through terminals 133 formed by branching and extending toward the patch plate 120 of the . A specific feeding structure for the corresponding radiating element 120 of the stripline 130 for signal coupling will be described later in more detail.

On the other surface of the panel body 111 of the base panel 110, as shown in FIGS. 1 to 3, a plurality of ground accommodating ribs 114 for accommodating at least one strip line 130 for signal coupling by dividing, respectively. It may be formed integrally with the panel body 111 .

The number of the at least one signal coupling stripline 130 is, for example, the radiating element 120 disposed on one surface of the panel body 111 is ±45 degrees polarized or vertical / horizontal polarization (horizontal / vertical polarization) When provided as a double polarization patch element for generating a double polarized wave, such as, it is preferable to form two pairs of each of the single radiating element 120 . That is, when four radiating elements 120 are spaced apart from each other in the width direction of the panel body 111 as shown in FIGS. 1 to 3 , the number of striplines 130 for signal coupling is eight. can be

Here, the number of the plurality of ground accommodating ribs 114 formed on the other surface of the panel body 111 is, when 8 striplines 130 for signal coupling are provided, all of the striplines 130 for signal coupling are accommodated, respectively. It can be formed in any number of

In addition, the through terminal 133 formed on each of the at least one signal coupling stripline 130 is 10 in the longitudinal direction of the panel body 111, as the radiating element 120 is shown in FIGS. 1 to 3 . When the dogs are arranged to be spaced apart, each of the 10 is provided so as to simultaneously supply a power supply signal in series to any one of the feeding points provided in each of the 10 radiating elements 120 at the same time.

In general, when the bandwidth of the frequency is large, such as 400 to 500 MHz or more, it is known that parallel supply is advantageous compared to the serial supply method as a supply method of a power supply signal. This is because, in the case of the series supply method, the phase (slope) at a frequency far away from the center frequency may change and a phase deviation may occur. For example, if the bandwidth is 400 MHz and the supply method of the feed signal is adopted as the serial supply method, the phase near the center frequency does not change, but a phase delay of about -6 degrees occurs at the frequency farthest from the center. Therefore, the gain may decrease. However, in the parallel supply method of the feed signal, more lines must be added than the serial supply method, while the loss increases by the added line and the gain decreases, and a complex line design is required to minimize the loss. .

In the case of 3.5GHz and 28GHz, which are recently used as 5G frequencies, for example, 300MHz width is used in the 3.5GHz band and 1GHz width is used in 28GHz. In the 100 MHz and 28 GHz bands, a bandwidth of about 333 MHz can be allocated.

In an embodiment of the present invention, through the serial supply method of the feed signal, it can be widely used in an environment with a bandwidth of 300 MHz or less, so it has the advantage of solving both the loss problem and the disadvantages of the complex line design in the above-described parallel supply method. have.

To this end, at least one strip line 130 for signal coupling is also a straight line so as to simultaneously supply a power supply signal to each of the radiating elements 120 arranged in a line (linear form) on one surface of the panel body 111 in a serial supply method. It is preferable to be provided in a shape.

Figure 4 is a schematic diagram for explaining the implementation of the feeding mode and double polarization of the feed signal to the radiating element using a stripline for signal coupling.

The through terminal 133 formed on each of the signal coupling striplines 130 supplies a power supply signal to a pair of power feeding points a and b provided in the radiating element 120 . For example, when the radiating element 120 is a dual polarization patch element generating ±45 degree polarization, feed signals corresponding to +45 degree and -45 degree polarization are supplied to the respective feed feeding points a and b.

Here, when the polarization feed signal is fed to the radiating element 120 , due to the characteristics of the signal in the high frequency band, the signal flows toward the edge of the radiating element 120 rather than the central portion, thereby generating resonance of the radiating element 120 . At this time, even if the different polarization signals overlap, the directions of the vectors of the two polarization signals are orthogonal and do not affect each other. For example, referring to FIG. 4 , the transmit signal at feed point c, located diagonally therefrom compared to feed point a, is phase-delayed by 180 degrees, and similarly, the transmission at feed point d, located diagonally therefrom compared to feed point b. The signal may also be phase delayed by 180 degrees. Accordingly, double polarized waves orthogonal to each other are generated at the a and c feeding points and the b and d feeding points of the radiating element 120 .

On the other hand, as described above, the base panel 110 is formed of a metal material including the panel body 111 and the partition wall 112 to serve as a ground for feeding the radiating element 120 as a whole. can be done Here, when the through terminal 133 of the stripline 130 for signal coupling is directly energized to the base panel 110, there is a risk of an electrical short phenomenon occurring. An insulating tip 126 that insulates between the 133 may be provided. The through terminal 133 of the stripline 130 for signal coupling may be exposed toward the space 113 of the base panel 110 through the insulating tip 126 .

The serial supply of a specific feed signal using the stripline 130 for signal coupling will be described in more detail with reference to FIG. 13 to be described later.

On the other hand, the base panel 110 including the above-described configuration may be formed of a first material (ie, aluminum material) that is the same material as the circular-type patch plate 120 or a second material different from the first material. have. Here, the second material may include a magnesium material other than the aluminum material as the first material. Therefore, the base panel 110 may be formed of any one of an aluminum material and a magnesium material. Such a base panel 110, like the radiation element 120 described above, may be molded by a die-casting method.

Here, the base panel 110, as described above, is made of any one of the first material and the second material, which is a metallic material, and serves as a reflector for reflecting the frequency signal radiated from the radiating element 120 together. have the advantage of performing

5 is a cross-sectional view taken along line AA of FIG. 1 and a partially enlarged view thereof, FIG. 6 is a cross-sectional view taken along line BB of FIG. 1 and a partially enlarged view thereof, and FIG. 7 is a cutaway taken along line CC of FIG. It is a perspective view and a partial enlarged view thereof.

The antenna assembly 100 according to an embodiment of the present invention configured as described above may be automatically assembled through an automated assembly process as shown in FIGS. 5 to 7 .

More specifically, the method for manufacturing an antenna assembly according to an embodiment of the present invention includes a radiation material manufacturing step of manufacturing a mold using a molding material of a first metal material to mold a radiation element by a die casting method or a press method, and a first A base panel manufacturing step of manufacturing the base panel by a die casting method or a press method using a molding material of the same material as the metal material or a material different from the first metal material, a strip line for signal coupling provided to penetrate the base panel, and It may include a fixing step of coupling each of the radiating elements to the base panel by a laser point welding method using a laser welding apparatus.

In particular, in the fixing step, the base panel 110 in which a space 113 partitioned by at least one partition wall 112 is formed when manufacturing a mold by a die-casting method while performing a ground function as a whole is automated (not shown). It includes the process of fixing to the position of the fixing part of the assembly device.

Next, in the fixing step, the plurality of signal coupling striplines 130 are moved between the ground accommodating ribs 114 corresponding to each of the other surfaces of the panel body 111 by using an automated assembly device, but through the panel It may include a process of fixing the plurality of through terminals 133 branched from the stripline body 131 of the signal coupling stripline 130 through the hole 116 to pass therethrough. At this time, the insulating tip 126 as described above is provided between the panel through hole 116 and the through terminal 133 of the strip line 130 for signal coupling, so that the through terminal 133 is penetrated and fixed to be insulated from each other. can

And, in the fixing step, by using the clamping part (not shown) of the automated assembly device, the circular-type patch plates 120 are simultaneously moved to one side of the panel body 111 , so that the tip of the fixing member 115 is circular. The method may further include a process of temporarily assembling to penetrate and seat the fixing member through-holes 121 formed in each of the patch plates 120 of the type.

Finally, in the fixing step, the strip for signal coupling exposed in the direction of one surface of the panel body 111 through the feed connection hole 123 formed in the circular-type patch plate 120 using a laser welding device (not shown). The process of point welding by irradiating a laser to the tip of the fixing member 115 exposed through the through-terminal 133 of the line 130 and the fixing member through-hole 121 formed in the circular-type patch plate 120 is further added. may include

As described above, in the antenna assembly 100 according to an embodiment of the present invention, the base panel 110 is manufactured by a die-casting method using a metal molding material, and the radiating elements 120 coupled thereto are also metal. As it is manufactured by a die-casting method using a molding material of a material, a separate solder cream application process for fixing both components is unnecessary, and has the advantage of being able to be fixed very simply by using a laser welding device.

For reference, as in another embodiment to be described with reference to FIGS. 8 to 12 , when a pair of extension connection legs 225 extending a predetermined length from one surface of the radiating element 220 are provided, the above-described In order to perform the fixing step, the radiation element manufacturing step is preferably implemented so that the laser transmission cutout 227 is formed.

8 is a perspective view showing the appearance of an embodiment to which a modified patch plate is applied among the configurations of an antenna assembly according to another embodiment of the present invention, FIG. 9 is an exploded perspective view of FIG. 8, and FIG. 10 is a line DD of FIG. It is a cross-sectional view and a partial enlarged view thereof, FIG. 11 is a cross-sectional view taken along the EE line of FIG. 8 and a partially enlarged view thereof, and FIG. 12 is a cutaway perspective view and a partially enlarged view taken along the FF line of FIG. 8 .

The antenna assembly 200 according to another embodiment of the present invention, compared with the antenna assembly 100 according to an embodiment of the present invention already described through the group of drawings in FIGS. 1 to 7 , the radiating element 120 . This is an embodiment in which the shape of the patch plate 120 of the circular type is transformed into the shape of the patch plate 220 of the deformable type. The shape change (120->220) of the radiating element causes a change in welding position in a laser point welding process to be described later.

Hereinafter, as compared to the antenna assembly 100 according to an embodiment of the present invention described above, a detailed description of a common configuration and its function will be omitted, and will be mainly described with respect to a relatively different or changed part.

The antenna assembly 200 according to another embodiment of the present invention, as shown in FIGS. 8 to 12 , a plurality of through terminals 233 branched from the stripline body 231 of the stripline 230 for signal coupling. ) is configured to be connected to a plurality of extension connection legs 215 extending from the deformable patch plate 220 toward the bottom surface of the base panel 210 (ie, one surface of the panel body 211 ).

As in the embodiment 100 of the present invention, the plurality of through terminals 133 pass through the partitioned space 113 formed on one surface of the panel body 111 to directly connect the power supply formed to the radiating element 120 . It is preferable to be connected to the hole 123, but in this case, a certain portion of the design of the double polarization may be limited.

Accordingly, in another embodiment 200 of the present invention, a pair of extension connection legs 225 extending from the opposite surface of the radiating element 220, which is a surface facing one surface of the panel body 211, may be additionally provided. The same feeding connection hole 223 as the feeding connection hole 123 of the above-described embodiment may be formed at an end of the pair of extension connection legs 225 .

The pair of extension connection legs 225 is, compared to the embodiment 100 of the present invention, to change the connection portion with the relatively plurality of through terminals 233 to be closer to one side of the panel body 111 . As a result, the end portion may be bent and extended toward the side where the panel through hole 216 is formed, and may be provided to extend downwardly to a position adjacent to one surface of the space 213 of the base panel 210 . Therefore, the length of the plurality of extension connecting legs 233 formed in the stripline body 231 of the stripline 230 for signal coupling is positioned adjacent thereto through the panel through hole 216 of the panel body 211 . It is sufficient if the length is inserted into each of the feed connection holes 223 of the pair of extended connection legs 225 .

In addition, the pair of extension connection legs 225, the end of which the feed connection hole 223 is formed is a length that is located directly below the laser transmission cutout 227 formed in the patch plate 220 of a modified type to be described later. It is preferable to extend.

In addition, in the modified patch plate 220 , the laser irradiated from the laser welding device located on the outside of one surface of the panel body 211 does not interfere between the opposite surface of the radiating element 220 and one surface of the panel body 211 . It may further include a laser transmission cutout 227 in which a portion is cut to be projected.

Here, in view of the characteristics of the radiating element 220, when cutting a part as the laser transmission cutout 227, the outer shape must be symmetrical, and a portion symmetrical with the incision is additionally cut with respect to the center of the radiating element 220. It is preferable to form

13 is a conceptual diagram for explaining a power feeding process of an antenna assembly according to embodiments of the present invention.

The feeding process of the antenna assembly according to the embodiments 100 and 200 of the present invention configured as described above will be briefly described in the accompanying drawings (in particular, refer to FIG. 12 ).

As shown in FIG. 13 , a double polarization feed signal preset through the center of a pair of signal coupling strip lines 230 is distributed in parallel after the feed signal is supplied to the central point of the radiating element arrangement, that is, signal couple After branching to both sides through the center of the stripline body 231 of the stripline 230 for a ring, the radiating element 220 is fed in a series manner at the same time through the through-terminals 233 branched and extended to the respective feeding feeding points.

Radiating elements 220 arranged on one surface of the panel body 211 are spaced apart by 1λ, which is an electrical distance. There is a problem of phase delay. Therefore, in the present invention, by supplying the initial power supply signal to both sides symmetrically through the center of the stripline body 231, there is an advantage in that it is possible to prevent a phenomenon in which the phase is delayed by an electrical distance that is spaced apart.

As above, an antenna assembly and a method for manufacturing the same according to an embodiment of the present invention have been described in detail with reference to the accompanying drawings. However, the embodiments of the present invention are not necessarily limited by the above-described embodiments, and it is natural to say that various modifications and implementations in equivalent ranges are possible by those of ordinary skill in the art to which the present invention pertains. will be. Therefore, the true scope of the present invention will be determined by the claims to be described later.

100,200: antenna assembly 110: base panel
111: panel body 112: bulkhead
113: compartmentalized space 114: ground receiving rib
115: fixing member 116: panel through hole
120: radiating element 121: fixing member through hole
123: feed connection hole 130: strip line for signal coupling
131: stripline body 133: through terminal

Claims (18)

at least one radiating element formed of a first metal material; and
a base panel formed of the first metal material or a second metal material different from the first metal material, and including a fixing member spaced apart from one surface of the radiating element; and at least one signal coupling strip line disposed on the other surface of the base panel and connected to the radiating element through the base panel to provide a power supply signal to the radiating element; comprising, an antenna assembly. The method according to claim 1,
For feeding the radiating element, the radiating element and the base panel form an electrical ground as a whole, the antenna assembly. The method according to claim 1,
The base panel may include: at least one barrier rib formed to minimize signal interference between adjacent radiating elements; Further comprising, the antenna assembly. The method according to claim 1,
Each of the radiating element and the base panel is manufactured by a die casting mold or a press mold, the antenna assembly. The method according to claim 1,
The first material of the radiating element, the antenna assembly comprising a metal material or a metal-plated plastic surface. 6. The method according to claim 1 or 5,
The second material of the base panel includes an aluminum material or a magnesium material, the antenna assembly. The method according to claim 1,
The radiating element is formed in a disk or polygonal shape, the antenna assembly. The method according to claim 1,
The strip line for signal coupling,
a stripline body formed in a straight line to correspond to a straight line connecting any one of the feeding points of the radiating element arranged in a line; and
a plurality of through terminals branched from the stripline body and connected to any one of the feeding points of the radiating element; comprising, an antenna assembly. 9. The method of claim 8,
The plurality of through terminals are connected to pass through the radiating element or are connected to a plurality of extension connection legs extending from the radiating element toward the bottom surface of the base panel. 10. The method of claim 9,
The radiating element is provided with a laser transmission cutout in which a part of the edge is cut for laser point welding connection with the plurality of through terminals through the plurality of extension connection legs, the antenna assembly. 11. The method of claim 10,
Feed connection holes into which the plurality of through terminals are inserted are formed through the ends of the plurality of extension connection legs;
The plurality of extension connection legs are extended such that an end at which the feed connection hole is formed is located directly below the laser transmission cutout, the antenna assembly. The method according to claim 1,
The fixing member is formed to protrude from the center of the bottom surface respectively formed by the partition wall,
In the radiating element, a fixing member through-hole through which an upper part of the fixing member to which the radiating element can be mounted passes is formed, respectively, an antenna assembly. The method according to claim 1,
An antenna assembly, wherein the radiating element and the signal coupling stripline and the radiating element and the fixing member are connected by a laser point welding method. The method according to claim 1,
The radiating element is provided as a double polarized patch element that generates either a ±45 degree polarization or a vertical/horizontal polarized wave,
The stripline for the signal coupling is provided in a straight line form that is simultaneously connected to any one of the feeding points of the radiating element arranged in a line, the antenna assembly. 15. The method of claim 14,
A power supply signal is simultaneously supplied through a pair of signal coupling striplines arranged adjacently among the signal coupling striplines,
After supplying the feed signal to the central point of the array of radiating elements arranged in a line, the feed signal is distributed in parallel, and the distributed feed signal is supplied in series in a straight line direction on one side and a straight direction on the other side, respectively. The method according to claim 1,
On the other surface of the base panel, a plurality of ground accommodating ribs for partitioning and accommodating the plurality of signal coupling strip lines, respectively, are integrally formed in the antenna assembly. A spinning material manufacturing step of manufacturing a mold by a die casting method or a press method using a molding material of a first metal material;
A base panel manufacturing step of manufacturing a mold using a molding material of the same material as the first metal material or a material different from the first metal material by a die casting method or a press method; and
a fixing step of coupling a strip line for signal coupling provided to penetrate through the base panel and the radiating element for the base panel by a laser point welding method, respectively, using a laser welding apparatus; A method of manufacturing an antenna assembly comprising a. 18. The method of claim 17,
The spinning material manufacturing step,
When a pair of extension connection legs extending a predetermined length from one surface of the radiating element are further provided, a laser transmission cutout for coupling the laser point welding method is formed in the radiating element, the method of manufacturing an antenna assembly.

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