Signal shielding device and antenna device including same

Abstract

A signal shielding device including a shield cover that prevents an increase in manufacturing costs and facilitates EMI shielding, and an antenna device including the same are provided. [Solution] The signal shielding device is stacked on a printed board assembly (hereinafter, abbreviated as "PBA") having a number of signal-related components mounted on one side thereof, and includes a shield cover for preventing leakage of signals from the number of signal-related components. A grooved shield cover mounting groove is formed on one side of the PBA, and an insertion end portion to be inserted and mounted in the shield cover mounting groove is integrally formed on the other side of the shield cover facing the one side of the PBA.

Description

[Technical field]

[0001] The present invention relates to a signal shielding apparatus and an antenna apparatus including the same, and more particularly, to a signal shielding apparatus and an antenna apparatus including the same, which can easily attach and assemble a shield cover to a printed board assembly (PBA) without a separate dispensing process. [Background technology]

[0002] Wireless communication technology, for example, Multiple-Input Multiple-Output (MIMO) technology, is a technology that dramatically increases data transmission capacity by using multiple antennas. It is a spatial multiplexing technique in which a transmitter transmits different data through each transmitting antenna and a receiver separates the transmitted data through appropriate signal processing.

[0003] Therefore, by simultaneously increasing the number of transmitting and receiving antennas, the channel capacity increases, enabling the transmission of more data. For example, increasing the number of antennas to 10 will secure about 10 times the channel capacity using the same frequency band compared to the current single antenna system. In the case of a transmitting and receiving device that applies this MIMO technology, as the number of antennas increases, the number of transmitters and filters also increases.

[0004] FIG. 1 is an exploded perspective view and a partially enlarged view showing multiple layers of a MIMO antenna device according to the prior art, and FIG. 2 is a perspective view and a partially cross-sectional view showing the assembly of an MBF (Multi Band Filter) between an associated PCB board and an antenna substrate in the configuration of FIG. 1.

[0005] Referring to Figures 1 and 2, an example of a MIMO antenna device according to the prior art includes a main housing 10 that is open on one side, has a predetermined installation space, is shielded on the other side, and has a number of heat dissipation fins integrally formed therewith.

[0006] In addition, an example of a MIMO antenna device according to the prior art further includes a Print Board Assembly (hereinafter, abbreviated as "PBA") 30 which is primarily stacked so that one side (upper and lower side in the drawing) is in close contact with the bottom surface of the installation space of the main housing 10 and has RF power supply network related components (not shown) mounted on the other side, and has a number of Multi Band Filters (MBF) 40 mounted on one side with a shield can or shield cover 50 in between, and an antenna board 60 which is secondarily stacked inside the installation space of the main housing 10 and is connected to the MBF 40 on the other side via an RF connector 43 to form a predetermined electrical signal line, and has a number of antenna elements 65 mounted on one side.

[0007] Here, the shield can or shield cover 50 is interposed between the PBA 30 and the MBF 40, and performs a signal shielding function of blocking electromagnetic waves and / or signal interference generated from electrical components (e.g., RF power supply network related components (not shown)) mounted on the PBA 30, thereby preventing them from affecting electrical signal lines constructed within the MBF 40.

[0008] However, since one side of the PBA 30 on which multiple RF power supply network components are mounted and the MBF 40 need to be configured to be mutually conductive, as shown in FIG. 1, the MBF 40 may be provided with at least one case extension 45 into which an RF connector 43 is inserted, and a shield can or shield cover 50 may be formed with at least one through hole 55 through which the case extension 45 passes.

[0009] However, due to the trend towards slimmer products, MIMO antenna devices according to conventional technology are manufactured to minimize the thickness of the main housing 10. As a result, the internal components of the MBF 40 (e.g., resonating components (not shown)) are arranged in a single horizontal row, which narrows the internal space within the cavity and reduces the skirt characteristics (i.e., the Q value).

[0010] In addition, since the MBF 40 is a representative heat generating element that generates a large amount of heat during the frequency filtering process, the heat generated from the MBF 40 is transferred to one side of the PBA 30 via a shield can or shield cover 50 or through the shield cover 50, and then the heat must be smoothly dissipated through a number of heat dissipation fins 15 of the main housing 10 in order to improve the filtering performance of the MBF 40.

[0011] More specifically, in a transceiver such as a MIMO antenna device, the quality of a communication signal may be degraded by electromagnetic interference (EMI) or radio frequency interference (RFI). Therefore, the PBA 30 including the PCB of the transceiver may generally use the above-mentioned shield can or shield cover 50 to reduce electromagnetic interference (EMI) and radio frequency interference (RFI).

[0012] The shield can or shield cover 50 is provided on one side of the PCB and performs a signal shielding function to block electromagnetic waves and / or signal interference generated from electrical components (e.g., RF power supply network related components) mounted on the PBA 30.

[0013] Meanwhile, when the shield can or shield cover 50 is attached to one side of the PBA 30, a predetermined dispensing process (EMI Shield Gasketing Material) is applied to surround components such as AMP and RF line that require EMI shielding, thereby performing the above-mentioned signal shielding function.

[0014] However, the conventional shield can or shield cover 50 has a problem of significant cost increase since the dispensing process for attaching to the PBA 30 is performed after casting and post-processing.

[0015] In addition, the shield can or shield cover 50 according to the conventional technology has a problem in that a certain adhesive material used in the dispensing process is first applied to one side of the PBA 30 and then bonded thereto, resulting in high thermal resistance and limiting heat dissipation to the shield can or shield cover 50 side. Summary of the Invention technical challenges

[0016] The present invention has been devised to solve the above technical problems, and an object of the present invention is to provide a signal shielding device including a shield cover that prevents an increase in manufacturing costs and facilitates EMI shielding, and an antenna device including the same.

[0017] Another object of the present invention is to provide a signal shielding device and an antenna device including the same, which can significantly improve heat dissipation performance by eliminating the dispensing process using an adhesive material and securing the heat dissipation path blocked by the adhesive material.

[0018] The object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned herein will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0019] A signal shielding device according to one embodiment of the present invention includes a shield cover that is stacked on one side of a printed board assembly (PBA) having a number of signal-related components mounted on one side thereof, and prevents signal leakage from the number of signal-related components. A grooved shield cover mounting groove is formed on one side of the PBA, and an insertion end portion that is inserted and mounted in the shield cover mounting groove is integrally formed on the other side of the shield cover that faces the one side of the PBA.

[0020] Here, the insertion end portion may be formed with a step so that the entirety of the insertion end portion is received in the groove shape of the shield cover seating groove.

[0021] Alternatively, a tip surface of the insertion end portion may be spaced a predetermined distance from a bottom surface of the shield cover seating groove when the stepped portion contacts an outer surface of the shield cover seating groove.

[0022] In addition, the insertion end portion may have a front end surface supported by the shield cover seating groove, and a side portion may be formed obliquely so that the side portion becomes larger than the formation width of the shield cover seating groove as it moves away from the bottom surface of the shield cover seating groove.

[0023] Also, the shield cover seating groove and the insertion end of the shield cover may be formed in a closed roof shape to surround components inside which EMI shielding is required.

[0024] The components within which EMI shielding is required may also include amplification-related elements and RF power supply-related components coupled to the PBA.

[0025] Also, the insertion end portion may be extended a predetermined length from the other surface of the shield cover toward a bottom surface of the shield cover seating groove.

[0026] Also, the inner surface of the shield cover seating groove may be coated with either a material that easily blocks electromagnetic waves or a material that is thermally conductive.

[0027] Also, an insertion end of the shield cover may be formed to correspond to a shape of a shield cover well formed to reinforce the shield cover.

[0028] In addition, the insertion end of the shield cover and the outer surface of the shield cover well may be coated with either a material that easily blocks electromagnetic waves or a material that is thermally conductive.

[0029] Also, the shield cover seating groove may be formed to have a horizontal cross section corresponding to a shape of a shield cover well formed to reinforce the shield cover.

[0030] Also, the shield cover seating groove may be formed to have a U-shaped cross section.

[0031] An antenna device including a signal shielding device according to one embodiment of the present invention includes an antenna housing section formed in a rectangular box shape with an open front, a PBA module stacked in an internal space of the antenna housing section, a filter module stacked in front of the PBA module, and a radiating element module stacked in front of the filter module. Between the PBA module and the filter module, a shield cover is stacked on one side of the PBA module on which a number of signal-related components are mounted, for preventing signal leakage from the number of signal-related components. The shield cover is integrally formed with an insertion end portion on the other side facing the one side of the PBA module, which is inserted and seated in a shield cover seating groove formed by groove processing on one side of the PBA module. Effect of the Invention

[0032] According to an embodiment of the signal shielding device of the present invention, by attaching a shield cover to a component requiring EMI shielding on one side of a PBA without a separate dispensing process, it is possible to achieve not only more efficient shielding but also to prevent an increase in manufacturing costs.

[0033] In addition, the present invention can achieve the effect of greatly improving heat dissipation performance by eliminating the adhesive material used to attach a conventional shield cover to one side of a PBA (Printed Board Assembly), thereby enabling heat dissipation from both one and the other sides of the PBA. [Brief description of the drawings]

[0034] [Figure 1] 1A and 1B are an exploded perspective view and a partially enlarged view showing a number of layers of a MIMO antenna device according to the prior art; [Diagram 2] 2 is a perspective view and a partial cross-sectional view showing the assembly of a multi-band filter (MBF) between an associated PCB board and an antenna substrate in the configuration of FIG. 1. FIG. [Diagram 3] 1 is a perspective view showing an appearance of an antenna device including a signal shielding device according to an embodiment of the present invention; [Figure 4a] FIG. 4 is an exploded rear perspective view of FIG. 3. [Figure 4b] FIG. 4 is an exploded front perspective view of FIG. 3. [Figure 5a] 4 is an exploded rear perspective view showing a PBA module, a filter module and a radiating element module in the configuration of FIG. 3. FIG. [Figure 5b] 4 is an exploded front perspective view showing a PBA module, a filter module and a radiating element module in the configuration of FIG. 3. [Figure 6] 1 is a perspective view showing a PBA and a shield cover in a configuration of a signal shielding device according to an embodiment of the present invention. [Figure 7] 7 is an exploded perspective view of FIG. 6 and a partially enlarged view thereof. [Figure 8] 7 is an exploded perspective view of FIG. 6 and a partially enlarged view thereof. [Figure 9] 1A and 1B are a cross-sectional view and a cut-away perspective view of a configuration of a signal shielding device according to an embodiment of the present invention, in which a shield cover according to a first embodiment is applied; [Figure 10] 1A and 1B are a cross-sectional view and a cut-away perspective view of a configuration of a signal shielding device according to an embodiment of the present invention, in which a shield cover according to a first embodiment is applied; [Figure 11] 11A and 11B are a cross-sectional view and a cutaway perspective view of a configuration of a signal shielding device according to an embodiment of the present invention, in which a shield cover according to a second embodiment is applied. [Figure 12] 11A and 11B are a cross-sectional view and a cutaway perspective view of a configuration of a signal shielding device according to an embodiment of the present invention, in which a shield cover according to a second embodiment is applied. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0035] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a signal shielding device and an antenna device including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0036] In assigning reference numerals to components in each drawing, it should be noted that the same components are assigned the same numerals as much as possible even if they are shown in different drawings. In addition, in describing the embodiments of the present invention, if a detailed description of related known configurations or functions is determined to hinder understanding of the embodiments of the present invention, the detailed description will be omitted.

[0037] In describing the components of the embodiments of the present invention, terms such as 1, 2, A, B, (a), (b) and the like may be used. Such terms are merely intended to distinguish the components from other components, and do not limit the essence, order, or procedure of the components. In addition, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the contextual meaning of the relevant art, and should not be interpreted in an idealized or overly formal sense unless expressly defined in this application.

[0038] FIG. 3 is an oblique view showing the appearance of an antenna device including a signal shielding device according to one embodiment of the present invention, FIG. 4a and FIG. 4b are rear and front exploded oblique views of FIG. 3, and FIG. 5a and FIG. 5b are rear and front exploded oblique views showing the PBA, filter module and radiating element module of the configuration of FIG. 3.

[0039] As shown in Figures 3 to 5b, an antenna device 100 according to an embodiment of the present invention may include an antenna housing portion 200 having a box shape with an open front and elongated vertically, a printed board assembly (PBA: Printed Board Assembly, hereinafter abbreviated as "PBA") 300 stacked so as to be in close contact with an internal space 200S of the antenna housing portion 200, a filter module 400 stacked in front of the PBA 300, and a radiating element module 600 stacked in front of the filter module 400.

[0040] The antenna housing portion 200 is made of a metal material (or a conductive material) and serves to protect the components (PBA 300, filter module 400 and radiating element module 600) housed in the internal space 200S together with the radome 700 described later from the outside, and also serves to dissipate internal heat generated during system operation of the antenna device 100 to the outside.

[0041] For this purpose, the antenna housing part 200 is preferably made of a metal material having high thermal conductivity, and a number of heat dissipation fins 201 may be integrally formed on the rear part of the antenna housing part 200 to increase the heat dissipation surface area.

[0042] In addition, a handle 250 may be formed at the center of both the left and right ends of the antenna housing 200 so that the antenna housing 200 can be easily carried and installed at the installation site by a worker.

[0043] As shown in Figures 4a and 4b, the PBA 300 may include a PA board 310 positioned so as to be branched into upper and lower parts relatively at the same layer layer, a DTA board 320 arranged to form the same layer layer between the upper and lower branched PA boards 310, a PSU board 330 arranged to form the same layer layer below the lower PA board 310, and an external board (External Board, 340) arranged to form a different layer layer below the PSU board 330.

[0044] The DTA board 320 and the external board 340 are electrically connected to each other via an OPTIC cable and an FCC cable 350 , and an external mounting member 370 may be coupled to the external board 340 .

[0045] Amplification-related elements such as PA elements or LNA elements and RF power supply-related components (hereinafter collectively referred to as "PBA elements" and indicated by the representative reference numeral "311") are mounted on at least one side or the other side of the PA board 310 and the DTA board 320, and at least a number of heat transfer modules 360 for transferring operating heat generated from the PBA elements 311 to the rear side of the antenna housing unit 200 may be arranged on the rear portion of the PA board 310.

[0046] The plurality of heat transfer modules 360 may include a thermal pad 362 that is arranged so that at least a portion of the thermal pad 362 directly contacts the outer surface of the PBA element 311 and collects heat from the PBA element 311, and a plurality of heat pipes 361 that are connected at one end to the thermal pad 362 and connected at the other end to be in close contact with the inner surface of the antenna housing part 200 and contain a refrigerant fluid therein that undergoes a phase change depending on temperature.

[0047] Meanwhile, the filter module 400 may be stacked in front of the PBA 300 so as to be electrically connected to the PBA 300 already stacked in the internal space 200S of the antenna housing part 200, as shown in Figures 4a to 5b.

[0048] Here, the filter module 400 is a component for filtering signals of a specific frequency band, and although not shown in the drawing, a cavity filter may be used in which a number of cavities are provided in a filter body made of a dielectric material, and each cavity is provided with a resonator bar and a resonator bar tuning screw that function as a resonator.

[0049] The filter module 400 may include a first filter section 410 provided relatively at an upper portion and a second filter section 420 provided relatively at a lower portion.

[0050] Meanwhile, as shown in Fig. 4a to Fig. 5b, the radiating element module 600 may include a reflecting panel 610 having a panel shape, a number of feed lines 620 arranged on the front surface of the reflecting panel 610, and a number of radiating elements 630 connected to the number of feed lines 620. The number of radiating elements 630 may be either a patch type or a dipole type, and may be a dipole type in one embodiment of the present invention as shown in the drawings.

[0051] As described above, the PBA 300, the filter module 400 and the radiating element module 600 stacked in the internal space 200S of the antenna housing part 200 can protect the internal components from the outside by fixing the radome panel 700 to the front end frame part of the antenna housing part 200 via a number of fixing clips 710, and shielding the opened front part of the antenna housing part 200. Here, a number of support bosses 720 are provided on the rear part of the radome panel 700, and the reflecting panel 610 of the radiating element module 600 can be firmly and stably assembled and fastened through assembly screws (not shown).

[0052] FIG. 6 is a perspective view showing a shield cover provided on a PBA as a component of a signal shielding device according to one embodiment of the present invention, and FIGS. 7 and 8 are an exploded perspective view of FIG. 6 and a partially enlarged view thereof.

[0053] The signal shielding device according to an embodiment of the present invention includes a PBA 300 that is primarily stacked inside an internal space 200S of an antenna housing part 200 that is formed in a rectangular box shape that forms an accommodation space that is open to the front (upper side in the drawing) and has a long and thin length in the vertical direction and a front-to-rear accommodation width. Referring to Fig. 7, a number of signal-related components (PBA elements 311) may be mounted on one surface (lower surface in the drawing) of the PBA 300 or penetrating the PBA 300.

[0054] A shield cover 500 may be provided on one side of the PBA 300 to shield external noise (signals due to electromagnetic waves, etc.) as a configuration according to an embodiment of the present invention. The shield cover 500 may have a clamshell shape. This name is derived from the fact that the shield cover 500 covers the front surface of the PBA 300 and the remaining portions except for insertion ends 510a and 510b, which will be described later, are formed apart from the front surface of the PBA 300.

[0055] 7, a shield cover seating groove 380 into which the insertion ends 510a, 510b of the shield cover 500 are inserted may be formed by recessing on one surface of the PBA 300. The PBA 300 may be formed of a multi-layered layer, and the shield cover seating groove 380 may be formed by processing a part of the ground layer of the multi-layered layer.

[0056] Here, the shield cover seating groove 380 is preferably formed by intaglio machining in a shape corresponding to the shape of the insertion end portions 510a, 510b of the shield cover 500 so that the leading end of the shield cover 500 is inserted and contacted therewith.

[0057] In addition, the shield cover seating groove 380 is provided to receive the insertion ends 510a and 510b of the shield cover 500, and therefore can also serve to determine the installation position of the shield cover 500 with respect to one surface of the PBA 300.

[0058] More specifically, the shield cover mounting groove 380 may be formed to have a U-shaped horizontal cross section with an open upper portion so that the tip surface of the shield cover 500 is mounted therein and contacts a portion of the side surface adjacent to the tip surface of the shield cover 500.

[0059] Here, when the insertion ends 510a, 510b of the shield cover 500 described later are inserted into the shield cover mounting groove 380 formed to have a U-shaped horizontal cross section as described above, the stepped surface of the stepped insertion end (i.e., the insertion end 510a according to the first embodiment described later) or the outer peripheral surface of the slanted insertion end (i.e., the insertion end 510b according to the second embodiment described later) can be accommodated so as to be engaged with or come into contact with the outer tip of the shield cover mounting groove 380.

[0060] 9 and 10 are a cross-sectional view and a cut-away perspective view of a signal shielding device according to one embodiment of the present invention in which a shield cover according to a first embodiment is applied, and FIGS. 11 and 12 are a cross-sectional view and a cut-away perspective view of a signal shielding device according to one embodiment of the present invention in which a shield cover according to a second embodiment is applied.

[0061] The insertion ends 510a, 510b of the shield cover 500 may be either an insertion end 510a according to a first embodiment having a stepped shape to be fitted into the groove shape of the shield cover mounting groove 380 for mounting as shown in Figures 9 and 10, or an insertion end 510b according to a second embodiment having a tip surface supported by the bottom surface of the shield cover mounting groove 380 and a side surface obliquely formed so that the further it is away from the shield cover mounting groove 380, the larger the width of the shield cover mounting groove 380 becomes.

[0062] Here, the insertion ends 510a and 510b of the shield cover 500 may be formed to correspond to the shape of a shield cover well (Shield Cover Wall, 511) already formed on the rear surface of the shield cover 500 in order to reinforce the shield cover 500. That is, the insertion ends 510a and 510b of the shield cover 500 may be formed integrally with the shield cover 500 and the shield cover well 511 by a molding method, or may be formed by processing the end portion of the shield cover well 511 after the shield cover 500 and the shield cover well 511 are first molded and manufactured.

[0063] The shield cover well 511 is formed on one side or the other side of the shield cover 500, facing one side of the PBA 300, and is formed into a closed roof shape with multiple lattices, and can accommodate signal-related components that require EMI shielding inside.

[0064] Here, the components inside which EMI shielding is required may include amplification-related elements (PA elements or LNA elements) and RF power supply-related parts (RF lines, etc.) coupled to the PBA 300.

[0065] Therefore, the shield cover 500 can ultimately serve to prevent mutual electromagnetic signal interference between the components that require EMI shielding, which are mounted or coupled to the PBA 300, and the filter module 400 that is stacked in front of it to form different layers.

[0066] Meanwhile, the insertion end 510a of the shield cover 500 according to the first embodiment includes a tip portion 513 formed by extending in a stepped manner from the end of the shield cover well 511 of the shield cover 500 toward one side of the PBA 300, as shown in Figures 9 and 10, and the tip portion 513 may be formed to be smaller than the width of the shield cover seating groove 380 formed on one side of the PBA 300.

[0067] Here, the tip of the shield cover well 511 (i.e., the step boundary surface with the tip portion 513 of the insertion end 510a) contacts one side of the PBA 300 on which the shield cover mounting groove 380 is formed, and the tip surface of the tip portion 513 of the insertion end 510a is directly in contact with the bottom surface of the shield cover mounting groove 380 or is mounted at a predetermined distance therefrom, thereby absorbing the assembly tolerances between parts and easily performing its original function of signal shielding.

[0068] In particular, with regard to the function of absorbing assembly tolerances between parts, when the shield cover 500 is manufactured by a casting method or when the shield cover mounting groove 380 is machined and formed in the PBA 300, assembly tolerance problems may occur within a certain range between the two parts, so this means that the insertion depth of the tip surface of the tip portion 513 of the insertion end portion 510a is formed to be at least smaller than the depth of the shield cover mounting groove 380.

[0069] In other words, the assembly tolerance is absorbed by forming the protruding length of the tip portion 513 of the insertion end portion 510a to be smaller than the depth of the shield cover mounting groove 380. While the tip of the shield cover well 511 contacts one side of the PBA 300 and is engaged, the tip surface of the insertion end portion 510a of the shield cover 500 according to the first embodiment is spaced apart from the inner surface of the shield cover mounting groove 380. Therefore, minute assembly tolerances that occur during the manufacture of the shield cover 500 can be absorbed within the range of the separation distance.

[0070] At this time, the tip (ie, the stepped surface) of the shield cover well 511 is in close contact with one surface of the PBA 300 corresponding to the outside of the shield cover seating groove 380, thereby performing the above-mentioned signal shielding function.

[0071] Meanwhile, the insertion end 510b of the shield cover 500 according to the second embodiment includes a tip portion 513 formed at an angle so that the width gradually narrows from the end of the shield cover well 511 of the shield cover 500 toward one side of the PBA 300, as shown in Figures 11 and 12. Only the end surface (tip surface) of the tip portion 513 is inserted into the inside of the shield cover seating groove 380 and comes into close contact with the inner surface, and the side portion (outer peripheral surface) is formed at an angle so that the width becomes larger than the formation width of the shield cover seating groove 380 as it moves away from the shield cover seating groove 380, as described above, so that only a portion of the side portion can be engaged with the upper end of the shield cover seating groove 380 or separated from the upper end of the shield cover seating groove 380.

[0072] More specifically, since the shield cover 500 according to the second embodiment has the shield cover well 511 corresponding to the side portion in a sloped shape as described above, the leading end surface of the leading end 513 of the insertion end 510b contacts the inner surface of the shield cover seating groove 380, and the sloped shield cover well 511 contacts the edge portion formed by the shield cover seating groove 380 and one surface of the PBA 300 to serve as a signal shield. This is because the insertion end 510b of the shield cover 500 according to the second embodiment is formed to extend obliquely from the end of the shield cover well 511 to the leading end 513.

[0073] The signal shielding device according to one embodiment of the present invention configured as described above can firmly seal the insertion ends 510a, 510b of the shield cover 500 to the PBA 300 to prevent signal leakage by the assembly force provided when assembling the shield cover 500 to the PBA 300 using a number of assembly screws (not shown).

[0074] As such, in the signal shielding device of one embodiment of the present invention, unlike the conventional technology, when the shield cover 500 is attached to one side of the PBA300, the insertion end 510a of the first embodiment or the insertion end 510b of the second embodiment of the shield cover 500 is directly attached so as to come into contact with the PBA300 without using a dispensing process, which has the advantage that heat generated from the heat generating element mounted on the PBA300 can be easily transmitted through the PBA300 and dissipated to both one side and the other side of the PBA300.

[0075] That is, in the past, in order to attach the shield cover 500 to one side of the PBA 300, a dispensing process was performed using a certain adhesive material as an intermediary, and in terms of heat dissipation, heat was only possible through the other side of the PBA 300 because of the large thermal resistance caused by the adhesive material between the PBA 300 and the shield cover 500. However, a signal shielding device according to one embodiment of the present invention is capable of dissipating heat through both one side and the other side of the PBA 300.

[0076] However, it is preferable that the insertion ends 510a, 510b of the shield cover 500, the outer surface of the shield cover well 511, and the inner surface of the shield cover mounting groove 380 are coated with either a material that easily blocks electromagnetic waves or a heat-conductive material with excellent thermal conductivity so as to enable the aforementioned EMI shielding function or heat dissipation through heat transfer.

[0077] Meanwhile, the insertion end 510a of the shield cover 500 according to the first embodiment and the insertion end 510b of the shield cover 500 according to the second embodiment are formed to correspond to the shape of the aforementioned shield cover well 511, thereby serving to block electromagnetic waves and / or signal interference generated from components requiring EMI shielding (e.g., RF power supply network-related components mounted on one side of the PBA 300) inside the multiple lattice-shaped closed roof shapes formed by the shield cover well 511.

[0078] In this way, the antenna device 1 according to one embodiment of the present invention has insertion ends 510a, 510b integrally formed at the tip of the shield cover 500, which are inserted and seated in the shield cover seating groove 380 formed on one side of the PBA 300. This not only makes it easy to assemble the antenna device 1 to smoothly perform the EMI shielding function without a separate dispensing process, but also provides the advantage of preventing an increase in the manufacturing costs of the product.

[0079] For reference, reference numeral 390 in FIG. 7 may be a mating connector provided for electrical connection with other signal-related components (eg, the filter module 400 in FIGS. 4a to 5b).

[0080] A signal shielding device and an antenna device including the same according to an embodiment of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiment of the present invention is not necessarily limited to the above embodiment, and it goes without saying that various modifications and equivalent implementations are possible by those skilled in the art to which the present invention pertains. Therefore, it can be said that the true scope of the present invention is determined by the claims set forth below. [Industrial Applicability]

[0081] The present invention provides a signal shielding device and an antenna device including the same, which includes a shield cover that prevents an increase in manufacturing costs, easily provides EMI shielding, eliminates a dispensing process using an adhesive material, and secures a heat dissipation path blocked by the adhesive material, thereby significantly improving heat dissipation performance. [Explanation of symbols]

[0082] 100: Antenna device 200: Antenna housing part 201: Numerous heat dissipation fins 250: Handle 300:PBA 310: PA board 320:DTA board 330: PSU board 340: External board 350: Cable 380: Shield cover mounting groove 400: Filter module 410: First filter section 420: Second filter section 500: Shield cover 510a, 510b: Insertion end 511: Shield Cover Well 513:Tip 600: Radiating element module 610: Reflecting panel 620: Multiple power supply lines 630: Radiating element 700: Radome panel 710: Multiple fixing clips 720: Support Boss

Claims

1. The present invention includes a shield cover that is laminated on one surface of a printed board assembly (PBA) having a number of signal-related components mounted on one surface thereof, the shield cover preventing leakage of signals from the number of signal-related components; A groove is formed on one surface of the PBA to seat the shield cover. The shield cover has an insertion end portion formed integrally with the other surface facing the one surface of the PBA, the insertion end portion being inserted into the shield cover seating groove, The insertion end is formed with a step so that the entire end is received in the groove shape of the shield cover seating groove.

2. 2. The signal shielding device of claim 1, wherein the tip surface of the insertion end is spaced a predetermined distance from a bottom surface of the shield cover seating groove when the stepped portion contacts an outer surface of the shield cover seating groove.

3. A printed board assembly (PBA) having a number of signal-related components mounted on one surface thereof, the printed board assembly including a shield cover for preventing leakage of signals from the number of signal-related components; A groove is formed on one surface of the PBA to seat the shield cover. The shield cover has an insertion end portion formed integrally with the other surface facing the one surface of the PBA, the insertion end portion being inserted into the shield cover seating groove, The insertion end has a tip end surface supported by the shield cover seating groove, and a side portion is formed obliquely so that the side portion becomes larger than the formation width of the shield cover seating groove as it moves away from the bottom surface of the shield cover seating groove.

4. 2. The signal shielding device according to claim 1, wherein the shield cover seating groove and the insertion end of the shield cover are formed in a closed roof shape to surround a component inside which EMI shielding is required.

5. 5. The signal shielding device of claim 4, wherein the components within which EMI shielding is desired include amplification-related elements and RF power-feed-related components coupled to the PBA.

6. A printed board assembly (PBA) having a number of signal-related components mounted on one surface thereof, the printed board assembly including a shield cover for preventing leakage of signals from the number of signal-related components; A groove is formed on one surface of the PBA to seat the shield cover. The shield cover has an insertion end portion formed integrally with the other surface facing the one surface of the PBA, the insertion end portion being inserted into the shield cover seating groove, The insertion end portion is formed to extend a predetermined length from the other surface of the shield cover toward a bottom surface of the shield cover seating groove.

7. 2. The signal shielding device according to claim 1, wherein the inner surface of the shield cover seating groove is coated with either a material that easily blocks electromagnetic waves or a material that is heat conductive.

8. The signal shielding device according to claim 1 , wherein an insertion end of the shield cover is formed to correspond to a shape of a shield cover well formed to reinforce the shield cover.

9. The signal shielding device according to claim 8 , wherein the insertion end of the shield cover and an outer surface of the shield cover well are coated with one of a material that easily blocks electromagnetic waves and a material that is heat conductive.

10. A printed board assembly (PBA) having a number of signal-related components mounted on one surface thereof, the printed board assembly including a shield cover for preventing leakage of signals from the number of signal-related components, A groove is formed on one surface of the PBA to seat the shield cover. The shield cover has an insertion end portion formed integrally with the other surface facing the one surface of the PBA, the insertion end portion being inserted into the shield cover seating groove, The shield cover seating groove is formed to have a horizontal cross section corresponding to a shape of a shield cover well formed to reinforce the shield cover.

11. A printed board assembly (PBA) having a number of signal-related components mounted on one surface thereof, the printed board assembly including a shield cover for preventing leakage of signals from the number of signal-related components, A groove is formed on one surface of the PBA to seat the shield cover. The shield cover has an insertion end portion formed integrally with the other surface facing the one surface of the PBA, the insertion end portion being inserted into the shield cover seating groove, A signal shielding device, wherein the shield cover seating groove is formed to have a U-shaped cross section.

12. an antenna housing portion formed in a rectangular box shape with an opening at the front; a printed board assembly (PBA) arranged in a laminated manner in an internal space of the antenna housing; A filter module arranged in front of the PBA; a radiating element module arranged in a stack in front of the filter module; a shield cover is further provided between the PBA and the filter module, the shield cover being stacked on one side of the PBA on which a number of signal-related components are mounted, for preventing leakage of signals from the signal-related components; The shield cover has an insertion end formed integrally on the other surface facing the one surface of the PBA, the insertion end being inserted into a shield cover seating groove formed on the one surface of the PBA, The insertion end portion is (a) The shield cover is formed with a step so that the entire shield cover can be received in the groove shape of the shield cover seating groove, (b) the front end is surface-supported in the shield cover seating groove, and the side portion is formed obliquely so that the side portion becomes larger than the formation width of the shield cover seating groove as it moves away from the bottom surface of the shield cover seating groove, or (c) a predetermined length is extended from the other surface of the shield cover toward the bottom surface of the shield cover seating groove; 1. An antenna device, comprising:

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