Radiating element for antenna

Abstract

The present invention relates to a radiating element for an antenna, and more particularly, to a radiating element for an antenna, which comprises a base panel laminated in parallel with the front surface of a reflective panel, and at least one dipole bent and extended in different directions from the base panel, respectively, and radiating beams of different polarizations from each other, thereby providing the advantage of being able to improve the antenna gain (Gain) and achieve the weight reduction of a product.

Description

TECHNICAL FIELD

[0001] The present application relates to a radiating element of antenna, and more particularly, to a radiating element of antenna capable of optimizing arrangement of radiating elements of different frequency bands to improve antenna gain and reduce weight of parts, thereby realizing light weight of product. BACKGROUND

[0002] In recent years, as an antenna device for mobile communication base station and Wi-Fi communication device antenna device, a multi-band antenna device capable of communicating in multiple frequency bands has been practically applied in order to secure communication capacity.

[0003] Generally, in a wireless communication network such as a mobile communication network or a wireless subscriber loop, a base station is provided between a switching station and a user terminal, and wireless signals are exchanged between the base station and the user terminal.

[0004] An antenna device provided in the base station is designed to have a certain vertical / horizontal direction beam pattern and beam pointing characteristics in consideration of spatial distribution of users.

[0005] In recent years, existing mobile communication operators have diversified services by acquiring business rights of other frequency bands in addition to the originally allocated frequency bands, and in order to cope with such a change in the wave environment, there is a need for a structure capable of changing beam characteristics such as beam width or beam tilt angle of an antenna (radiating element).

[0006] In other words, when the beam width of a communication antenna or a broadcast antenna is fixed, if a situation occurs in which the beam width needs to be changed, there is a problem in that another antenna satisfying the change demand must be replaced, and for this reason, recently, a structure has been applied in which a change in phase value is realized by changing the physical length of a transmission line of a radiating element in order to cope with a change in beam characteristics such as beam width or beam tilt angle.

[0007] However, in order to change the physical length of the transmission line, a phase shifter must be equipped, and the phase shifter occupies a relatively large space, which not only hinders thinness of a product, but also becomes a factor of an increase in manufacturing process cost due to complication of the transmission line.

[0008] On the other hand, the multi-band antenna device includes a plurality of dipole type antenna patch elements to radiate a beam pattern of a multi-band operating frequency.

[0009] Such a multi-band antenna device constitutes an antenna array in which a plurality of cross-dipole antenna patch elements (hereinafter, referred to as "radiating elements", LB antenna (low band antenna), MB antenna (medium band antenna)) for different frequency bands are alternately arranged on a reflection panel.

[0010] In this case, the arrangement of each radiating element of the LB antenna and the MB antenna (hereinafter, the antenna patch element of the LB antenna is simply referred to as a "low-band element", and the antenna patch element of the MB antenna is simply referred to as a "mid-band element") on the reflection panel is preferably arranged as far apart as possible so that the beam pattern formed from each radiating element can be directly radiated and not interfere with each other.

[0011] However, the separate arrangement of the radiating elements inevitably leads to an increase in the overall product size, and thus, recently, the mid-band elements having a relatively small radiating surface area are arranged in an overlapping manner inside the low-band elements having a large surface area, thereby reducing the product size.

[0012] Accordingly, recent research on how to arrange a large number of radiating elements in a multi-band antenna device to obtain an efficient arrangement and an overlapping arrangement for optimal antenna gain is actively being conducted to minimize the volume occupying the thickness in the front-rear direction and reduce the weight of components, thereby achieving slimness and lightness of the overall product. SUMMARY

[0013] TECHNICAL PROBLEM

[0014] The present application has been made to solve the above-mentioned technical problem, and an object of the present application is to provide a radiating element for an antenna that can optimally arrange a plurality of radiating elements of a multi-band antenna device to secure good antenna gain.

[0015] In addition, another object of the present application is to provide a radiating element for an antenna that can minimize the weight of components, thereby achieving lightness of the overall product.

[0016] Further, still another object of the present application is to provide a radiating element for an antenna that can minimize the thickness in the front-rear direction occupied by a specific component, thereby achieving slimness of the overall product.

[0017] In addition, still another object of the present application is to provide a radiating element for an antenna that can improve a passive intermodulation distortion (PIMD) problem.

[0018] However, the objects of the present application are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

[0019] SOLUTION TO PROBLEM

[0020] An antenna radiation element according to an embodiment of the present application includes a base panel laminated in parallel with a front surface of a reflector panel and at least one dipole bent and extended in different directions from the base panel and radiating different polarized beams, the base panel and the at least one dipole being formed of a conductive sheet panel having the same thickness, the at least one dipole realizing a radiation pattern of at least one polarization and including dipole radiation ends spaced apart from each other in pairs with reference to edge ends formed in an extending direction, thereby realizing a radiation pattern of the same polarization.

[0021] wherein a spacing distance between the dipole radiation ends can be maintained by a shape maintaining member.

[0022] Further, the at least one dipole can be manufactured as a separate object and then coupled to the base panel in a detachable manner.

[0023] Further, the base panel and the at least one dipole can be integrally manufactured by a press die and then bent apart from each other, thereby having the symmetric poles.

[0024] Further, the at least one dipole can be formed to have four edges extending radially forward from respective vertices of the base panel of a square shape and gradually increasing in vertical cross-sectional area corresponding to front ends of the respective vertices.

[0025] Further, the at least one dipole can include a pair of first dipoles participating in one of the different polarized beams and occupying two edges in a diagonal direction of one of the four edges, respectively, and a pair of second dipoles participating in another of the different polarized beams and occupying two edges in a diagonal direction of another of the four edges, respectively, the pair of first dipoles and the pair of second dipoles being spaced apart from each other by a separation slit formed along the respective edges, to form the dipole radiation ends.

[0026] Further, the pair of first dipoles and the pair of second dipoles can each include a rear end radiation end extending in parallel along the separation slit and in parallel along the edge, and a front end radiation end bent and extended from a front end of the rear end radiation end toward a position corresponding to a vertex of an adjacent edge.

[0027] Further, the antenna radiation element can further include first and second feed lines applying predetermined electrical signals to the pair of first dipoles and the pair of second dipoles.

[0028] In addition, one of the first and second feed lines can be fixed to one of the front or rear of the pair of first dipoles and the pair of second dipoles, and the other of the first and second feed lines can be fixed to the other of the front or rear of the pair of first dipoles and the pair of second dipoles.

[0029] In addition, the first and second feed lines can have an air strip shape supported at a predetermined distance with respect to the front or rear of the pair of first dipoles and the pair of second dipoles.

[0030] In addition, the antenna radiation element can further include at least one feed line spacing portion for maintaining the first and second feed lines spaced apart with respect to the front or rear of the pair of first dipoles and the pair of second dipoles.

[0031] In addition, the first and second feed lines can be connected to the pair of rear end radiation ends separated by the separation slit.

[0032] In addition, a connection terminal for connecting the first and second feed lines can be further formed on one of the pair of rear end radiation ends.

[0033] In addition, when the at least one dipole participates in polarized beam radiation of a first frequency band, an element installation hole can be formed in the base panel, through which a middle frequency band element participating in polarized beam radiation with respect to a second frequency band having a higher frequency than the first frequency band penetrates in the front-rear direction.

[0034] In addition, the antenna radiation element can further include a ground portion integrally formed to connect the rear end radiation end of one of the pair of first dipoles and the rear end radiation end of one of the pair of second dipoles.

[0035] In addition, a front end of the ground portion can be located at least further forward than a front end of the middle frequency band element.

[0036] In addition, the antenna radiation element can further include a shape maintaining connector for connecting a front end of any one of the front end radiation ends of the pair of first dipoles and a front end of any one of the front end radiation ends of the pair of second dipoles to each other to maintain a shape.

[0037] In addition, the front end radiation end can be bent with respect to the rear end radiation end and vertically bent with respect to the front of the reflection panel.

[0038] In addition, the aforementioned front-end radiating end can be bent in such a way that its vertical cross-sectional area is reduced relative to the vertical cross-sectional area of ​​the aforementioned square front end of the aforementioned low-frequency band element without the aforementioned bending surface, thereby avoiding beam interference of the aforementioned mid-frequency band elements arranged between adjacent aforementioned low-frequency band elements.

[0039] In addition, the front end of the aforementioned front radiating end can be spaced apart from the front end of the adjacent front radiating end, and after extending parallel to the side of the aforementioned front radiating end, it bends and extends in parallel toward the direction of the aforementioned element mounting hole.

[0040] Furthermore, the aforementioned base panel and at least one dipole can be made into a sheet-like form of conductive material with a thickness capable of deforming according to the flexure of the aforementioned reflective panel.

[0041] Invention Effects

[0042] According to an embodiment of the present invention, an antenna radiating element can improve antenna gain and reduce the weight of the relatively heavy reflective panel by optimizing the arrangement of multiple radiating elements that realize the function of a multi-band antenna, thereby reducing the overall weight of the product and achieving the effect of product lightweighting.

[0043] Furthermore, since the present invention does not require changing the physical length of the transmission line arranged in the form of an air strip line, but can achieve the change of phase value by changing the dielectric constant of the medium, it can not only realize the thinning of the product, but also reduce the product manufacturing cost.

[0044] Furthermore, the present invention enables the reflective panel or antenna panel assembly formed along the vertical direction to deform in shape due to deflection caused by external factors, thereby achieving the effect of improving the PIMD problem. Attached Figure Description

[0045] Figure 1 This is a perspective view showing the appearance of an antenna device with a phase shifter according to an embodiment of the present invention.

[0046] Figure 2a and Figure 2b yes Figure 1 An exploded perspective view of the front and rear sides of the separate antenna housing in the structure.

[0047] Figure 3 It is shown Figure 1 A perspective view of the appearance of part (a) after the radar dome panel has been removed.

[0048] Figure 4 It is shown Figure 1 A perspective view of the appearance after removing the back panel from part (b).

[0049] Figure 5 is a perspective view showing an antenna panel assembly in which a phase shifter is disposed according to an embodiment of the present application.

[0050] Figure 6 is a perspective view showing a state in which the low frequency band element and the middle frequency band element are separated in the configuration of Figure 5

[0051] Figure 7 is a perspective view showing a state in which only the low frequency band element is separated in the configuration of Figure 5

[0052] Figure 8 is a perspective view showing a state in which the low frequency band element and the middle frequency band element are disposed in overlap in the configuration of Figure 5

[0053] Figure 9a and Figure 9b are exploded perspective views showing the front surface portion and the back surface portion of the reflecting panel in which the low frequency band element and the middle frequency band element are disposed in the configuration of Figure 5

[0054] and Figure 10a are front and rear perspective views showing the low frequency band phase shifter and the middle frequency band phase shifter disposed on the reflecting panel. Figure 10b

[0055] and Figure 11a are each exploded perspective view and a partial enlarged view thereof in the configuration of Figure 11b Figure 10a and Figure 10b

[0056] Figure 12a and Figure 12b are each front view and back view in the configuration of Figure 10a Figure 10b

[0057] Figure 13 is a cutaway perspective view and a partial enlarged view thereof of a dielectric panel for phase adjustment in the configuration of a phase shifter in an antenna device according to an embodiment of the present application.

[0058] Figure 14 is a partial enlarged perspective view for explaining an operating state of a phase shifter in an antenna device according to an embodiment of the present application.

[0059] Figure 15 is a sectional view taken along the B-B line of Figure 14

[0060] Figure 16 is a schematic view for explaining a function of a dielectric panel for phase adjustment in the configuration of a phase shifter in an antenna device according to an embodiment of the present application.​​​​​​​​

[0061] Figure 17a and Figure 17b is an exploded perspective view showing the combined state of the reflector panel and the transmission line of the low frequency band element.

[0062] Figure 18a and Figure 18b is an exploded perspective view showing the combined state of the reflector panel and the transmission line of the middle frequency band element.

[0063] Figure 19 is a front view and a rear view perspective view showing the combined state of the radiating elements in the constitution of the antenna device according to an embodiment of the present application.

[0064] Figure 20a and Figure 20b are front view and rear view exploded perspective views of Figure 19 .

[0065] Figure 21 are cross-sectional views showing the arrangement state of the radiating elements on the reflector panel in different embodiments of the constitution of the antenna device according to an embodiment of the present application.

[0066] Figure 22 is a perspective view showing the low frequency band element in the constitution of the antenna device according to an embodiment of the present application.

[0067] Figure 23 are front view and rear view of Figure 22 .

[0068] Figure 24 are side views of Figure 22 .

[0069] Figure 25a and Figure 25b are front view perspective view and rear view perspective view of another embodiment of the low frequency band element in the constitution of the antenna device according to an embodiment of the present application.

[0070] Figure 26 are expanded views of Figure 25a or Figure 25b .

[0071] Figure 27a to Figure 27c are front view, side view and rear view of Figure 25a .

[0072] Figure 28a and Figure 28b are exploded perspective views of the front part and the back part showing the state after separating the first feeding line and the second feeding line in the constitution of Figure 25a .

[0073] Figure 29 are front view, side view and rear view of Figure 25aFig. 6 is a perspective view of a PIMD improved structure realized by a feeder interval portion, a shape retaining member, and a shape retaining connecting member in the configuration of the antenna device according to the embodiment of the present application, and a partially enlarged view thereof.

[0074] Figure 19 to Figure 24 Fig. 7 is a perspective view of an intermediate frequency band element in the configuration of the antenna device according to the embodiment of the present application.

[0075] Figure 18a Fig. 8 is an exploded perspective view of the intermediate frequency band element of Fig. 7. Figure 18b

[0076] Figure 25a Fig. 9 is a front view and a back view of the intermediate frequency band element of Fig. 7. Figure 25b

[0077] Figure 19 Fig. 10 is a side view of the intermediate frequency band element of Fig. 7. Figure 25a to Figure 27c

[0078] Fig. 11 is another embodiment of the intermediate frequency band element in the configuration of the antenna device according to the embodiment of the present application. Figure 25a to Figure 27c

[0079] Fig. 12 is an exploded perspective view of the intermediate frequency band element of Fig. 11. Figure 28a Figure 29 Fig. 13 is a partial front view (a) of a first transmission line for explaining a case where a phase difference is realized by adjusting a position and a depth of an impedance matching step of a phase medium in the configuration of a phase shifter of the antenna device according to the embodiment of the present application, and a graph (b) showing an ideal phase difference.

[0080] Figure 27a BRIEF DESCRIPTION OF THE DRAWINGS

[0081] 1: Antenna device

[0082] 1: Antenna device

[0083] 5: Antenna housing portion

[0084] 10: Rear panel

[0085] 20: Side panel

[0086] 30: Radome panel

[0087] 40: Cover panel

[0088] 50: Reinforcing frame

[0089] 100: Antenna panel assembly

[0090] 110: Reflective panel

[0091] 120, 130: Radiating element(s)

[0092] 120: Low frequency band element

[0093] ​​​121: Element setting hole

[0094] 122: Low-band element main body

[0095] 126: Dipole pattern

[0096] 130: Mid-band element

[0097] 131: Radiating panel

[0098] 132a, 132b: Dipole pattern

[0099] 133: Balun unit

[0100] 134: Radiating guide

[0101] 136: Extended guide panel

[0102] 138: Base panel

[0103] 139a, 139b: Lead terminal

[0104] 200: First transmission line

[0105] 210L, 210R: Input line

[0106] 220U: Upper side transmission line

[0107] 220D: Lower side transmission line

[0108] 300: Second transmission line

[0109] 400A, 400B: Phase shifter

[0110] 410: Driving motor

[0111] 411: Pinion tooth

[0112] 420: Rack

[0113] 421: Rack tooth

[0114] 430: Vertical movement rod

[0115] 440: Movement clamp

[0116] 450: Phase adjustment dielectric panel

[0117] 455: Impedance matching step

[0118] 460: Impedance matching dielectric panel

[0119] 1120: Second embodiment

[0120] 1121: Element setting hole

[0121] 1122: base panel

[0122] 1124a, 1124b: feed line

[0123] 1125: separation slit

[0124] 1126: dipole

[0125] 1129A: shape maintaining member

[0126] 1129B: shape maintaining connector

[0127] 1129C: feed line spacing portion DETAILED DESCRIPTION

[0128] Hereinafter, a radiating element for an antenna according to an embodiment of the present application will be described in detail with reference to the accompanying drawings.

[0129] In adding reference numerals to components of all the drawings, it should be noted that even components shown in different drawings are designated by the same reference numerals if they are the same components. Also, in explaining the embodiment of the present application, when it is judged that a detailed explanation of a related well-known structure or function hinders the understanding of the embodiment of the present application, the detailed explanation thereof is omitted.

[0130] In explaining the constituent elements of the embodiment of the present application, the terms of first, second, A, B, (a), (b), etc. can be used. These terms are used only to distinguish the constituent elements from the constituent elements thereof, and the essence, order or sequence, etc. of the related constituent elements are not limited by the terms. Also, unless otherwise defined, all the 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 the present application pertains. The terms identical to the definitions in the commonly used dictionaries should be interpreted as having the same meaning as in the articles of the related technology, and, unless otherwise defined in the present application, should not be interpreted to have an abnormal or overly formal meaning.

[0131] Figure 27c is a perspective view showing the appearance of an antenna device provided with a phase shifter according to an embodiment of the present application, Figure 27a and Figure 30 is Figure 31 is an exploded perspective view showing the separation of the front side and the rear side of the antenna housing portion in the constitution of Figure 30 is a perspective view showing the appearance state after removing the radome panel in the constitution of Figure 32 part (a) of Figure 30 is a perspective view showing the appearance state after removing the rear panel in the constitution of Figure 33 part (b) of

[0132] An antenna device 1 to which a radiating element for an antenna according to an embodiment of the present application is applied includes an antenna housing portion 5 formed with an internal space (not shown in the drawing) and an antenna panel assembly 100 vertically arranged in the internal space of the antenna housing portion 5 in an up-and-down direction.

[0133] As shown in Figure 30 , Figure 34 and Figure 35 , the antenna housing portion 5 includes a rear panel 10 performing a skeleton function, a side panel 20 composed of a left side main panel 21 and a right side main panel 22 combined to left and right end portions of the rear panel 10 and forming a front-and-rear direction thickness, a radome panel 30 combined to a front end portion of the side panel 20 to shield the internal space, and a cover panel 40 composed of an upper cover panel 41 combined in a manner of covering an opening portion of an upper portion and a lower cover panel 42 combined in a manner of covering an opening portion of a lower portion.

[0134] The rear panel 10 is a member forming a back surface portion appearance of the antenna housing portion 5 and can be in a thin plate form. The rear panel 10 can be composed of an aluminum material, but is not limited thereto and can be composed of a non-metallic material such as a plastic resin material.

[0135] A reinforcing frame 50 is provided at a front surface (i.e., an internal space side) of the rear panel 10 to reinforce rigidity of the rear panel 10 in the thin plate form. The reinforcing frame 50 can include a plurality of left and right reinforcing bars 51 to 54 combined to the front surface of the rear panel 10 in a left and right horizontal direction and arranged at a predetermined distance apart in an up-and-down direction, and a center reinforcing bar 55 combined to and connecting middle portions of the plurality of left and right reinforcing bars 51 to 54 in an up-and-down vertical direction.

[0136] On the other hand, each of rear ends of the left side main panel 21 and the right side main panel 22 is combined to left and right end portions of the rear panel 10 to form a side portion of the antenna housing portion 5, and each of front ends of the left side main panel 21 and the right side main panel 22 can be combined to the radome panel 30 through a plurality of combination clips 25 provided to combine the radome panel 30. Left and right end portions of the radome panel 30 are respectively bent in a rear direction with a predetermined curvature, and a clip groove 35 is formed at a corresponding position to achieve a clipping combination of the plurality of combination clips 25.

[0137] Left and right sealing members 23 and 24 are respectively interposed between the left side main panel 21 and the left end of the radome panel 30 and between the right side main panel 22 and the right end of the radome panel 30 to prevent rainwater or the like from penetrating into the internal space from the outside.

[0138] Although not shown in the drawings, it is apparent that the same members as the above-described left and right seal members 23 and 24 can be respectively interposed between the left side body panel 21 and the left end of the rear panel 10 and between the right side body panel 22 and the right end of the rear panel 10.

[0139] The left and right seal members 23 and 24 can be respectively formed of a rubber material that is deformed by the bonding force provided when the radome panel 30 is bonded and the bonding force provided when the side panel 20 and the rear panel 10 are bonded to seal the respective gaps.

[0140] On the other hand, the upper cover panel 41 of the cover panel 40 can be more firmly bonded to the upper ends of the rear panel 10, the left side body panel 21, the right side body panel 22, and the radome panel 30 by a pair of bonding mediation blocks 45 for mediating bonding with the upper end portion of the reflector panel 110 among the members of the antenna panel assembly 100 described below.

[0141] In addition, the lower cover panel 42 of the cover panel 40 can be formed with a plurality of through-holes or connection terminals (not shown in the drawings) for connecting external feed cables, which are not shown in the drawings. The lower cover panel 42 can also be simultaneously bonded to the lower ends of the rear panel 10, the left side body panel 21, the right side body panel 22, and the radome panel 30.

[0142] The radome panel 30 not only protects the internal configuration of the antenna panel assembly 100 disposed in the internal space from external influences, but also can be made of a material having a wave permeability that allows smooth radiation by the radiating elements 120, 130 composed of the above-described low frequency band element 120 and the middle frequency band element 130.

[0143] On the other hand, as shown in Figure 34 and Figure 30 to Figure 35 , the antenna panel assembly 100 can be disposed in the internal space of the antenna housing portion 5.

[0144] More specifically, as shown in Figure 30 to Figure 33 and Figure 34 , in the internal space of the antenna housing portion 5, a plurality of radiating elements 120, 130 are arranged in a manner of forming a plurality of rows and columns in the up-and-down direction and the left-and-right direction in the front portion thereof with the reflector panel 110 as the center, and a transmission line 300 in the form of an air strip line for feeding power to a radiating element (e.g., the middle frequency band element 130 in the present embodiment) related to a certain frequency band among the plurality of radiating elements 120, 130 can be provided in the rear portion thereof with the reflector panel 110 as the center.

[0145] For reference, in an embodiment of the present application, a structure is adopted in which a plurality of radiating elements 120, 130 are arranged in a column of six in the upward and downward direction and in a row of two in the left and right direction, i.e., a structure in which mid-band elements 130 are arranged between the low-band elements 120 in the upward and downward direction, and one mid-band element 130 is arranged at the center of each low-band element 120.

[0146] On the other hand, in one of the rear panel 10 or the side panel 20, a lower clamping portion (not shown) and an upper clamping portion (not shown) for mediating the coupling with a support pole P erected on the floor of the installation space can be provided, whereby the upper end portion of the antenna housing portion 5 is inclined at a predetermined angle in the front and rear direction with the lower end portion as a reference, to adjust the beam radiation direction.

[0147] Figure 35 is a perspective view showing an antenna panel assembly in which a phase shifter is provided according to an embodiment of the present application, Figure 36 is a perspective view showing Figure 1 is an exploded perspective view showing a state in which low-band elements and mid-band elements are separated in the configuration of Figure 2a is an exploded perspective view showing a state in which only low-band elements are separated in the configuration of Figure 2b

[0148] In the antenna device 1 of an embodiment of the present application, as shown in Figure 1 , the antenna panel assembly 100 can include radiating elements 120, 130 arranged in the front of a reflecting panel 110. Among them, the reflecting panel 110 can be made of a material capable of reflecting the frequency beam radiated by the front radiating elements 120, 130 to the front.

[0149] The radiating elements 120, 130 are communication constituent elements that function to radiate a predetermined frequency band beam when fed by the low-band transmission line 200 and the mid-band transmission line 300 described below.

[0150] Among them, the predetermined frequency band can be defined as a single specific frequency band, but in an embodiment of the present application, it is defined as a first frequency band that is relatively low and a second frequency band that is relatively high.

[0151] Therefore, the radiating elements 120, 130 can include low-band elements 120 capable of radiating a first frequency band beam and mid-band elements 130 capable of radiating a second frequency band beam.

[0152] Thus, when the radiating elements 120, 130 are respectively provided to radiate beams of different frequency bands, it is preferable to arrange them at positions at which the beams radiated by each other do not interfere.

[0153] ​However, in terms of ensuring isolation, the horizontal spacing between adjacent radiating elements 120 and 130 is preferably greater than or equal to half the wavelength of the corresponding frequency. However, if all radiating elements 120 and 130 in each frequency band are dispersed and staggered in order to avoid mutual interference, it will lead to an increase in the overall size of the product.

[0154] Therefore, in the antenna device 1 of one embodiment of the present invention, by arranging the relatively small mid-frequency band element 130 in the overlapping part of the relatively large low-frequency band element 120 in the front-back direction, the overall size of the product can be expanded while the mode beams of each frequency band can be successfully radiated.

[0155] More specifically, such as Figure 3 (including the following) Figure 1 As shown, low-frequency components 120 are arranged vertically at predetermined intervals on the front of the reflective panel 110. Meanwhile, mid-frequency components 130 are alternately arranged in regions P1 (where there is no beam interference with the low-frequency components 120) and P2 (where there is beam interference with the low-frequency components 120). Hereinafter, the mid-frequency components 130 arranged in the region P1 (where there is no beam interference) will be referred to as outer mid-frequency components 130O, and the mid-frequency components 130 arranged in the region P2 (where there is beam interference) will be referred to as inner mid-frequency components 130I.

[0156] The inner mid-frequency band element 130I arranged in the region P2 where beam interference occurs can be exposed forward through the element mounting holes 121 formed at the center of the low-frequency band element 120.

[0157] like Figure 4 As shown, there can be a total of 6 low-frequency components 120 (120-1a to 1c, 120-2a to 2c), which are arranged at predetermined intervals along the vertical direction (hereinafter referred to as "V-direction") to form at least one RF channel.

[0158] In addition to the inner intermediate frequency band element 130I arranged in the element setting hole 121 of each low frequency band element 120, the intermediate frequency band element 130 also has an outer intermediate frequency band element 130O arranged in the beam-free area P1 outside each low frequency band element 120. Therefore, a total of 12 intermediate frequency band elements 130 can be arranged along the V-direction.

[0159] The aforementioned low-frequency component 120 and mid-frequency component 130 can each be arranged in two along the horizontal direction (hereinafter referred to as "H-direction").

[0160] The low-band elements 120 and the mid-band elements 130 are fed by the transmission lines 200 and 300, respectively, arranged independently, so that each of the elements 120 and 130 radiates a beam of a respective frequency band, and each of the elements 120 and 130 arranged in the V-direction radiates a beam while maintaining a respective inherent phase value, so that a beam of a specific pattern is formed (beamforming).

[0161] The transmission lines 200 and 300 can be arranged on either the front or the rear of the reflector panel 110, but in the antenna device 1 of an embodiment of the present application, the phase shifters 400A and 400B described below are arranged separately as a low-band phase shifter 400A and a mid-band phase shifter 400B, so that the radiation beams of the low-band elements 120 and the mid-band elements 130 of the two frequency bands can be independently phase- changed, and in order to minimize the operational interference between the phase shifters 400A and 400B, the transmission line 200 associated with the low-band elements 120 is arranged on the front of the reflector panel 110, and the transmission line 300 associated with the mid-band elements 130 is arranged on the rear of the reflector panel 110.

[0162] Hereinafter, the transmission line 200, 300 arranged on the front of the reflector panel 110 and functioning to feed the low-band elements 120 is referred to as a "low-band transmission line" and is given the reference numeral "200", and the transmission line 200, 300 arranged on the rear of the reflector panel 110 and functioning to feed the mid-band elements 130 is referred to as a "mid-band transmission line" and is given the reference numeral "300".

[0163] Figure 1 is a front view of the low-band phase shifter and the mid-band phase shifter arranged on the reflector panel, Figure 1 is an exploded perspective view of the low-band elements and the mid-band elements arranged overlapping in the configuration of Figure 2a and Figure 2b are Figure 3 are exploded perspective views of the front and rear portions of the reflector panel on which the low-band elements and the mid-band elements are arranged in the configuration of Figure 4 and Figure 3 are front and rear perspective views of the low-band phase shifter and the mid-band phase shifter arranged on the reflector panel, Figure 4 and Figure 5 are Figure 6 and Figure 5 are each of the exploded perspective views and partial enlarged views thereof, Figure 7 and Figure 5 are Figure 5 to Figure 7 and Figure 3 are each of the front and rear views thereof.

[0164] The low-band elements 120 and the mid-band elements 130 can be dual-polarized elements that generate at least one polarized beam in dual polarization when fed at two positions by different transmission lines, respectively.

[0165] As shown in FIG. 2, two input transmission lines 210L, 210R, 310L, 310R of the low frequency band transmission line 200 and the middle frequency band transmission line 300 can be arranged on the front and back of the reflecting panel 110, respectively, so as to be able to feed the low frequency band elements 120 and the middle frequency band elements 130 arranged in the V-direction at two places. Figure 14 First, looking at the low frequency band transmission line 200, the left input line 210L and the right input line 210R can extend along straight lines and be arranged to the left and right sides of the low frequency band elements 120 through the lower cover panel 42.

[0166] At this time, the upper ends of the left input line 210L and the right input line 210R are arranged at the middle of the low frequency band elements 120 arranged in the V-direction, and at the upper ends (first branch points S1) thereof, the lines can be branched into branch lines of the upper transmission line 220U and the lower transmission line 220D and extended.

[0167] At the front ends (second branch points S2 and third branch points S3) of the upper transmission line 220U and the lower transmission line 220D, the lines are branched and extended to the three low frequency band elements 120-1a~120-1c located in the upper part and the three low frequency band elements 120-2a~120-2c located in the lower part, respectively, to form three branch transmission lines 230-1~230-3.

[0168] Hereinafter, the end portions of the three branch transmission lines 230-1~230-3 are defined as "output ends 205L, 205R" for feeding connection to one side and the other side of the low frequency band elements 120.

[0169] When the low frequency band elements 120 are disposed, the output ends 205L, 205R can be connected to the feeding patterns patterned on the outside or the inside of the low frequency band elements 120 to achieve feeding.

[0170] On the other hand, the middle frequency band transmission line 300 is different from the low frequency band transmission line 200 in that it is arranged on the back of the reflecting panel 110, and at the end portions of the three branch transmission lines 330-1~330-3, the lines are branched again into two lines.

[0171] More specifically, the middle frequency band transmission line 300 extends along straight lines and is arranged to the left and right sides of the middle frequency band elements 130 through the lower cover panel 42, respectively, by the left input line 310L and the right input line 310R.

[0172] At this time, the upper ends of the left input line 310L and the right input line 310R are arranged at the middle of the middle frequency band elements 130 arranged in the V-direction, and at the upper ends (first branch points S1) thereof, the lines can be branched into branch lines of the upper transmission line 320U and the lower transmission line 320D and extended.

[0173] In the same manner, the upper ends of the left input line 310L and the right input line 310R are arranged at the middle positions of the mid-band elements 130 arranged in the V-direction, and are branched at their upper ends (first branch points S1) into branch lines of the upper transmission line 320U and the lower transmission line 320D, respectively, and are extended.

[0174] At the front ends of the upper transmission line 320U and the lower transmission line 320D (second branch points S2 and third branch points S3), branch extensions are made to the six mid-band elements 130 located in the upper portion and the six mid-band elements 130 located in the lower portion, respectively, to form three branch transmission lines 330-1 to 330-3.

[0175] As a difference point from the low-band transmission line 200 as described above, the branch extensions are made again at the end portions of the three branch transmission lines 330-1 to 330-3 to form two branch lines, and the end portions thereof function as the output terminals 305L, 305R as described above.

[0176] The transmission lines 200, 300 described above can have the form of air strip lines arranged at a predetermined distance apart from the front and back surfaces of the reflection panel 110 with respect to the isolation support 500 (see below Figure 5 to Figure 7 and Figure 8 ).

[0177] The feed lines for the radiating elements 120, 130 are preferably formed by pattern printing on the surface of a general printed circuit board (PCB), but the printed circuit board has a problem in that the signal loss is greatly affected by the dielectric constant of the FR-4 material itself. In order to solve this loss problem, the transmission line structure in the form of an air strip line has an advantage, but when a phase shifter is implemented in the transmission structure in the form of an air strip line, it is necessary to use a plurality of cables and PCBs and the like in combination, thereby causing a decrease in the aesthetic appearance and an increase in the weight. In this structure, additional impedance matching elements are required to be added, and it is difficult to improve the loss due to the increase in the discontinuous sections.

[0178] Therefore, the antenna device 1 according to an embodiment of the present application employs the phase shifters 400A, 400B that change the phase values by the change in the dielectric constant of a dielectric in order to avoid the decrease in the aesthetic appearance and the increase in the weight while employing the transmission line structure in the form of an air strip line to prevent the signal loss caused by the dielectric constant of the printed circuit board material.

[0179] In particular, the antenna device 1 according to an embodiment of the present application proposes a technical feature in which the transmission lines 200, 300 are made in the form of a general conductor band, and are arranged spaced apart from the front and rear surfaces of the reflector panel 110 by a predetermined distance using the spacer support 500, and a phase adjustment medium panel 450, which is the core of the phase shifter 400A, 400B, is inserted and arranged in the space therebetween.

[0180] More specifically, as shown in FIG. 1, the phase shifters 400A, 400B of the antenna device 1 according to an embodiment of the present application can include a low-band phase shifter 400A that acts in the front with respect to the reflector panel 110 to change the phase value of the radiation beam of the low-band element 120, and a mid-band phase shifter 400B that acts in the rear with respect to the reflector panel 110 to change the phase value of the radiation beam of the mid-band element 130. Figure 5

[0181] Hereinafter, the above-described first frequency band is defined as a low band for radiating a frequency defined between 600 MHz and 800 MHz as a working frequency to form a low-band beam (beamforming), and the second frequency band is defined as a mid band for radiating a frequency defined between 1.7 GHz and 2.4 GHz as a working frequency to form a mid-band beam (beamforming).

[0182] In addition, the low-band transmission line 200 for feeding the low-band element 120 can be defined as a first transmission line, and the mid-band transmission line 300 for feeding the mid-band element 130 can be defined as a second transmission line.

[0183] First, the low-band phase shifter 400A of the phase shifters 400A, 400B of the antenna device 1 according to an embodiment of the present application will be specifically described as follows. As described later, the mid-band phase shifter 400B is different from the low-band phase shifter 400A only in the position of the driving motor 410, and the rest of the configuration and the theoretical principle thereof are the same, and thus the detailed description of the overlapping parts will be omitted, and only the parts in which there are differences will be described.

[0184] As shown in FIG. 2, the low-band phase shifter 400A can include a driving motor 410 that is electrically driven to generate a rotational force, a plurality of vertical movement bars 430C, 430L, 430R that receive the rotational force generated from the driving motor 410 and move in the up-down direction (V-direction) in front of the reflector panel 110, and a plurality of movement clamps 440 that are coupled to a plurality of positions of the plurality of vertical movement bars 430C, 430L, 430R and move in the up-down direction in conjunction therewith. Figure 9a

[0185] ​​Among them, the drive motor 410 of the low-frequency band phase shifter 400A is set in the form of a gearbox on the lower side of the back of the reflector panel 110. The rotation shaft of the drive motor 410 is arranged in the front-back direction and passes through the reflector panel 110 and protrudes forward. A small gear with small gear teeth 411 formed on the outer peripheral surface can be pivotally connected to the rotation shaft of the drive motor 410.

[0186] In addition, the plurality of vertical moving rods 430C, 430L, and 430R may include: a central moving rod 430C extending vertically from the center of the front of the reflective panel 110; a left moving rod 430L arranged parallel to and spaced apart from the central moving rod 430C on the left side of the front of the reflective panel 110; and a right moving rod 430R arranged parallel to and spaced apart from the central moving rod 430C on the right side of the front of the reflective panel 110.

[0187] Among them, the three vertical moving rods 430C, 430L, and 430R are connected to each other by a connecting rod 425 that connects their lower ends in the horizontal direction, and a rack 420 extends vertically on the connecting rod 425. The rack 420 is formed with rack teeth 421 that mesh with the pinion teeth 411 of the pinion.

[0188] When the drive motor 410 is electrically driven to generate rotational force, the pinion rotates and the rack 420 moves in the vertical direction (V-direction) through the rack teeth 421 that mesh with the pinion teeth 411. At this time, the three vertical moving rods 430C, 430L, and 430R, which are fixed by the connecting rod 425, move in linkage along the V-direction, thereby driving multiple moving clamps 440 to move in linkage.

[0189] On the other hand, such as Figure 9b As shown, the low-frequency phase shifter 400A may further include: a phase adjustment medium panel 450 (hereinafter referred to as "phase medium") movably arranged at the branch points S1, S2, S3 of the first transmission line 200 arranged in a way that is separated from the front of the reflective panel 110, and an impedance matching medium panel 460 (hereinafter referred to as "impedance medium") fixedly arranged in parallel on one side of the phase medium 450.

[0190] The phase medium 450 moves along the V- direction via the aforementioned moving clamp 440, thereby changing the dielectric constant at the branch points S1, S2, and S3 on the first transmission line 200 to alter the phase value of the low-frequency component 120.

[0191] like Figure 5 and Figure 10aAs shown, the movable clamp 440 may include: a clamp body 441 fixed to the vertical moving rod 430 by a bridging rod 443 extending orthogonally from the vertical moving rod 430 (430C, 430L, 430R, hereinafter collectively referred to as "430"); a bonding medium 444 coupled to the back of the clamp body 441 and mediating the bonding between the phase medium 450 and the clamp body 441 through the transmission line 200; and an elastic portion 445 provided on the clamp body 441 to elastically support the transmission line 200 to the phase medium 450 side.

[0192] The vertical movement of the multiple vertical moving rods 430 can be guided by multiple support rollers 470 arranged at predetermined intervals along the V-direction. The specific structure of the support rollers 470 will be described in more detail later.

[0193] The bonding medium 444 is a component that moves in conjunction with the clamp body 441 in front of the transmission line 200. It is made of a dielectric material and serves as a component to ensure that the dielectric constant is not affected except by the change in dielectric constant of the phase medium 450 that moves between the transmission line 200 and the front of the reflective panel 110.

[0194] On the other hand, the elastic part 445 elastically adheres to the side of the transmission line 200 by attaching the bonding medium 444 to the transmission line 200, thereby enabling the transmission line 200 and the phase medium 450 to contact and move with a uniform adhesion force.

[0195] Hereinafter, only the part of the phase shifter 400B for the mid-frequency band of the antenna device 1 according to an embodiment of the present invention that differs from the low-frequency band phase shifter 400A described above will be described. The remaining configuration not described can be regarded as the same as that of the low-frequency band phase shifter 400A.

[0196] like Figure 10b As shown, the phase shifter 400B for the intermediate frequency band can change the phase value by the change in dielectric constant generated when the phase medium 450 arranged at the branch points S1, S2, and S3 of the second transmission line 300, which are arranged separately relative to the back of the reflector panel 110, moves.

[0197] In the case of the low-frequency phase shifter 400A, multiple vertical moving rods 430 are provided with a central moving rod 430C. In contrast, the mid-frequency phase shifter 400B is provided with only a left moving rod 430L and a right moving rod 430R.

[0198] Furthermore, in the case of the low-frequency phase shifter 400A, only the central moving rod 430C extends to the left and right to form a bridging rod 443, and two clamp bodies 441 are set on one bridging rod 443. However, each bridging rod 443 on the left moving rod 430L and the right moving rod 430R is only provided with one clamp body 441. In the case of the mid-frequency phase shifter 400B, both the left moving rod 430L and the right moving rod 430R extend to the left and right to form a bridging rod 443, so that two clamp bodies 441 are set on one bridging rod 443. This is the difference between the two.

[0199] Figure 11a This is a cross-sectional perspective view and a partially enlarged view of the phase adjustment dielectric panel in the configuration of the phase shifter in an antenna device according to an embodiment of the present invention. Figure 11b This is a partially enlarged perspective view intended to illustrate the operating state of the phase shifter in an antenna device according to an embodiment of the present invention. Figure 10a It is along Figure 10b The cross-sectional view taken from the BB line. Figure 12a This is a schematic diagram illustrating the function of the phase adjustment dielectric panel in the configuration of the phase shifter in an antenna device according to an embodiment of the present invention.

[0200] Phase shifters 400A and 400B change the phase value by changing the dielectric constant of the phase medium moving in the V-direction. Therefore, the multiple vertical moving rods 430 that move directly must move stably without backlash when moving up and down in a straight line.

[0201] Therefore, such as Figure 12b As shown, multiple support rollers 470 can be provided to provide rolling support for the top and bottom of the vertical moving rod 430.

[0202] The plurality of support roller portions 470 may include: a pair of roller engagement ends 471 protruding forward or backward on the left and right sides of the vertical moving rod 430, respectively; a first roller 472 rotatably disposed on the pair of roller engagement ends 471 to rotatably support one side of the vertical moving rod 430; and a second roller 473 rotatably supporting the other side of the vertical moving rod 430.

[0203] With the multiple support rollers 470 as described above, the vertical moving rod 430 can move stably up and down while minimizing moving resistance, while maintaining a predetermined distance from the front and back of the reflective panel 110.

[0204] On the other hand, such as Figure 10a As shown, the first transmission line 200 and the second transmission line 300 may have an air strip structure separated by a plurality of isolation supports 500 to be separated from the front or back of the reflective panel 110 by a predetermined distance D1.

[0205] The isolation support 500 may include: a panel hook portion 510 that is inserted into and fixed to a hook hole (not shown) formed on the reflective panel 110; and a line placement portion 520 provided in the opposite direction to the panel hook portion 510 for placing the first transmission line 200 and the second transmission line 300.

[0206] A panel hook end 515 may be formed on the panel hook portion 510. Each front end of the panel hook end 515 passes through the hook hole and is locked by the hook. A line hook end 525 may also be formed on the line placement portion 520. The line hook end 525 is used to lock one end and the other end of the first transmission line 200 and the second transmission line 300.

[0207] On the other hand, according to an embodiment of the present invention, the phase shifters 400A and 400B of the antenna device 1 can operate by changing the dielectric constant caused by the movement of the phase medium 450 to achieve a change in phase value at each branch point S1, S2, S3 of the first transmission line 200 and the second transmission line 300.

[0208] However, in order to more accurately achieve the phase value change through the change of dielectric constant, the impedance dielectric 460 must be fixedly arranged in part of the branch points S1, S2, S3 of the input lines 310L, 310R or the transmission lines 320U, 320D before the branch on the side corresponding to the phase dielectric 450.

[0209] At this time, the phase medium 450 is preferably arranged between one side of the reflective panel 110 and the aforementioned transmission lines 200 and 300 in the form of air strips arranged at intervals relative to one side of the reflective panel 110, but it does not need to be arranged in the entire area. Here, the transmission lines 200 and 300 can be formed at the branch points S1, S2, and S3 of multiple branch lines 220U, 220D, 320U, and 320D, so as to feed power from the input lines 210L, 210R, 310L, and 310R to multiple radiating elements 120 and 130.

[0210] Among them, such as Figure 10b As shown in section (c), the side of the phase medium 450 facing the reflective panel 110 can form a stepped impedance matching step 455 in such a way as to form an air layer 455A.

[0211] Furthermore, the impedance dielectric 460 can be arranged in the length direction between the input lines 210L, 210R, 310L, 310R corresponding to S1 in the branch points S1, S2, S3 and one side of the reflective panel 110, or between the upper transmission lines 220U, 320U and the lower transmission lines 220D, 320D corresponding to S2, S3 in the branch points S1, S2, S3 and one side of the reflective panel 110. In this case, the impedance matching step 455 is preferably formed within the length direction of the impedance dielectric 460.

[0212] As described above, the impedance matching step 455 formed on the phase medium 450 can minimize the width variation of the first transmission line 200 or the second transmission line 300 that inevitably needs to be changed to achieve impedance matching by forming a dielectric layer of predetermined thickness, such as an air layer 455A, between the phase medium 450 and one side of the reflective panel 110.

[0213] For example, such as Figure 3 to Figure 12b As shown in part (a), when only the phase medium 450 is provided and the impedance medium 460 is not provided, in order to achieve an effective phase value change, the width change value of the input lines 210L, 210R or the upper transmission line 220U and the lower transmission line 220D before the branch points S1, S2, S3 in the first transmission line 200 is “X1”. This value is very large and may cause interference with the branch line on one side.

[0214] Furthermore, such as Figure 14 As shown in part (b), although an impedance medium 460 is provided together with the phase medium 450, if an impedance matching step 455 is not formed on the phase medium 450, the width variation of the first transmission line 200 or the second transmission line 300 is "X2", which is larger than X1.

[0215] In this case, such as Figure 15 As shown in part (c), an impedance matching step 455 is formed on the phase medium 450, so the width variation of the first transmission line 200 or the second transmission line 300 can be minimized to "X3". This not only creates a simpler overall appearance for the transmission lines 200 and 300, but also enables effective phase value changes.

[0216] Figure 8 to Figure 12b and Figure 8 to Figure 12b This is an exploded perspective view showing the combination of the reflector panel and transmission line of the low-frequency component. Figure 8 to Figure 12b and Figure 11a This is an exploded perspective view showing the combined state of the reflector panel and transmission line of the mid-frequency component. Figure 11b These are front and rear perspective views showing the combined state of the radiating elements in the configuration of an antenna device according to an embodiment of the present invention. Figure 8 to Figure 12b andFigure 13 are Figure 14 front and rear exploded perspective views of Figure 15 are cross-sectional views showing arrangement states of radiating elements on a reflecting panel in different embodiments in a configuration of an antenna device according to an embodiment of the present application, Figure 14 is a perspective view showing a low frequency band element in a configuration of an antenna device according to an embodiment of the present application, Figure 16 are Figure 14 front and rear views of Figure 15 are Figure 16 side views of

[0217] According to Figure 16 the low frequency band elements 120 and the middle frequency band elements 130 can be fixed to the front of the reflecting panel 110, respectively.

[0218] Among the plurality of middle frequency band elements 130, the inner middle frequency band elements 130I which interfere with the low frequency band elements 120 in the radiation direction can be arranged to penetrate the middle of the low frequency band elements 120. In order to penetrate the inner middle frequency band elements 130I among the middle frequency band elements 130 to the low frequency band elements 120, the element penetration hole 121 which penetrates in the front-rear direction can be formed in the middle of the low frequency band elements 120.

[0219] The plurality of low frequency band elements 120 and the plurality of middle frequency band elements 130 are fixed to the front of the reflecting panel 110, respectively, and can be independently fed by the first transmission line 200 arranged in front of the reflecting panel 110 and the second transmission line 300 arranged at the back of the reflecting panel 110.

[0220] To this end, at least one front-rear penetration hole 117 which penetrates in the front-rear direction can be formed in the reflecting panel 110 in order to be connected with the second transmission line 300, and the base panel 138 of the middle frequency band element 130 described below can be fixed through the front-rear penetration hole 117.

[0221] Among them, as shown in Figure 16 the plurality of low frequency band elements 120 can include a low frequency band element body 122 which is formed of a non-conductive material and in which the element penetration hole 121 for penetrating the respective middle frequency band elements 130 (particularly, the inner middle frequency band elements 130I) is formed in the center.

[0222] As shown in Figure 16 the front end of the low frequency band element body 122 has a substantially square vertical cross section, and gradually forms a square pyramid structure in which the vertical cross section decreases toward the element penetration hole 121 in the rear direction.

[0223] However, in order to stably connect with the front of the reflective panel 110 and to form the aforementioned element mounting hole 121, the low-frequency component body 122 does not necessarily need to be formed as a complete vertex like a regular square pyramid. Instead, it is formed as a surface in order to form the following dipole pattern 126 at each of the four rear corners. Therefore, the rear end of the low-frequency component body 122 and the element mounting hole 121 can be formed as a regular hexagon (or hexagon).

[0224] Among them, the main body 122 of multiple low-frequency components is molded from a lightweight plastic material that is non-conductive, thereby significantly reducing the overall weight of the antenna panel assembly 100 compared to the past.

[0225] On the other hand, the rear end of the low-frequency component body 122 where the component through-hole 121 is formed can be formed as a flat surface, so that its peripheral edge end contacts the front surface of the reflective panel 110, and the edge ends of each vertex of the square vertical cross-section of the low-frequency component body 122 extending from the location where the component through-hole 121 is formed are cut into flat chamfered shapes, thereby forming a flat portion rather than sharp corners, so that a portion of the dipole pattern 126 described below can be patterned thereon. Hereinafter, the edge portion of the low-frequency component body 122 on which the dipole pattern 126 is formed will be referred to as the "edge face".

[0226] Furthermore, the through-hole 121 can be formed in the region P2 of the mid-frequency element 130 where there is beam interference, to the size that allows the inner mid-frequency element 130I, which is arranged to overlap with the low-frequency element 120, to pass through.

[0227] The through hole 121 is preferably formed to a size that allows the base panel 138 and the balun portion 133, excluding the radiating panel 131, to pass through the mid-frequency element 130 in the front-to-back direction.

[0228] On the other hand, a dipole pattern 126 made of conductive material can be plated on the outer surface of the edge face of the low-frequency element 120 to form at least one polarized beam in the radiating dual polarization.

[0229] The dipole pattern 126 forms a dipole antenna pattern centered on each edge face of the low-frequency band element 120, and combines with another dipole antenna pattern connected in an "X" shape, thereby forming a polarized beam of +45 degrees and -45 degrees and playing a role in radiation.

[0230] like Figure 17a As shown, the dipole pattern 126 described above can be plated to form a shape that closes the periphery of the element mounting hole 121, and can be plated to form a shape that extends from the periphery of the element mounting hole 121 to the front end of the low-frequency element body 122, i.e., at the edge with a square front end edge.

[0231] The dipole pattern 126 can include a ground portion 121G plated at a peripheral portion of the element setting hole 121, and the ground portion 121G is used for grounding the intermediate frequency band element 130. The ground portion 121G is plated to completely enclose the peripheral portion of the element setting hole 121 through which the intermediate frequency band element 130 is disposed, so that a separate ground panel or the like that has served as a ground in the past can be omitted, design can be implemented without an additional structure, and weight increase can be prevented.

[0232] On the other hand, as shown in FIG. 2, the dipole pattern 126 can include a pair of dipole radiating ends 126a, 126b plated in a "T" shape from adjacent edges of a square vertical end portion of the front end of the low frequency band element main body 122. Figure 17b

[0233] The pair of dipole radiating ends 126a, 126b have bent front ends 126E-1, 126E-2, and a distance between the two front ends 126E-1, 126E-2 is preferably formed as half of a wavelength (operating frequency = λ) of the corresponding frequency band, i.e., λ / 2.

[0234] In the antenna device 1 to which the radiating element for an antenna according to an embodiment of the present application is applied, the size of the low frequency band element 120 can increase in consideration of the resonance frequency wavelength λ of the low frequency band, and to prevent this, as shown in FIG. 2, each front end 126E-1, 126E-2 of the pair of dipole radiating ends 126a, 126b located at the bent surface 120C is bent and extended, so that the length of the dipole antenna, i.e., λ / 2, is implemented while the size of the low frequency band element 120 is minimized. Figure 18a

[0235] In addition, since each front end 126E-1, 126E-2 of the pair of dipole radiating ends 126a, 126b is bent, the C value (capacitance) of the circuit is increased, and in consideration of the inverse relationship between the resonance frequency and the C value (capacitance) of the circuit, the frequency band can be further lowered as the C value (capacitance) is increased.

[0236] Therefore, there is an advantage that the low frequency band element 120 can smoothly radiate a signal in the low frequency band.

[0237] In this case, the front end portion of the low frequency band element main body 122 in which the dipole radiating ends 126a, 126b are plated can have a bent surface 120C bent with respect to an inclined side surface (not shown) that is inclined with respect to the front surface of the reflector panel 110 in which the low frequency band element 120 and the intermediate frequency band element 130 are disposed.

[0238] As shown in FIG. 2, the pair of dipole radiating ends 126a, 126b can be plated in a "T" shape from adjacent edges of a square vertical end portion of the front end of the low frequency band element main body 122. Figure 18b ​​As shown, the bent face 120C has a reduced vertical cross-sectional area compared to the square vertical cross-sectional area of the low-band element body 122 without the bent face 120C, thereby additionally securing a front beam projection area (refer to the symbol "L" in FIG. 1) of the outer middle-band element 130O disposed in the area P1 without beam interference. In other words, the bent face 120C can be bent to reduce the vertical cross-sectional area of the square front end of the low-band element 120 enough to avoid beam interference with the middle-band element 130 arranged between the adjacent low-band elements 120. Figure 19

[0239] In particular, the bent face 120C can be bent to be perpendicular to the front face of the reflection panel 110.

[0240] On the other hand, the front ends 126E-1, 126E-2 of the dipole radiation ends 126a, 126b are spaced apart from the front ends 126E-1, 126E-2 of the adjacent dipole radiation ends 126a, 126b, respectively, in a manner of maintaining predetermined separation lines 127-1, 127-2, and are plated to be extended and arranged in parallel in a direction of the element installation hole 121 with respect to the vertical cross-sectional area reduced by the bent face 120C in a predetermined ratio.

[0241] As shown, internal feed patterns 124a, 124b made of a conductive material for feeding the dipole pattern 126 can be plated on the inner side of the low-band element body 122 in the low-band element 120. Figure 20a

[0242] One end of the internal feed patterns 124a, 124b is connected to the output end of the first transmission line 200, and the other end of the internal feed patterns 124a, 124b is connected to the dipole pattern 126 through feed-through holes 128a, 128b penetrating the inside and outside of the low-band element body 122.

[0243] The internal feed patterns 124a, 124b can also be connected to the first transmission line 200 through transmission line connection holes 123a, 123b formed around the element installation hole 121 of the low-band element body 122.

[0244] As described above, the dipole pattern 126 and the internal feed patterns 124a, 124b can be formed by pattern plating on the low-band element body 122 through a plastic electro-plating design (PEP) process.

[0245] ​​Although not shown in the drawing, the PEP process refers to a process of applying current (electroplating) to the entire injection-molded part made of a thermoplastic resin after the entire injection-molded part is subjected to a metalizing process, leaving only a desired pattern, and then removing the remaining part through a chemical reaction. The PEP process has an advantage in forming a pattern on a relatively complex object compared to a general plating method.

[0246] The low-band element 120 configured as described above can be fixed to the front surface of the reflection panel 110 by the fixing screw 129S penetrating from the back surface of the reflection panel 110 and fastened on the screw coupling boss 129B formed at the peripheral edge end of the element installation hole 121.

[0247] Figure 20b and Figure 19 are a front perspective view and a rear perspective view of another embodiment of a low-band element included in an antenna device according to an embodiment of the present application, Figure 21 is Figure 22 or Figure 23 is an expanded view of Figure 22 is Figure 24 a front view, a side view, and a rear view of Figure 22 and Figure 17a to Figure 24 are exploded perspective views showing a front portion and a back portion of Figure 22 to Figure 24 in a state in which the first feeding line and the second feeding line are separated from each other, Figure 22 to Figure 24 is a perspective view and a partial enlarged view of a PIMD improvement structure realized by the feeding line interval portion, the shape maintaining member, and the shape maintaining connecting member in Figure 22 to Figure 24

[0248] The low-band element 120 described with reference to Figure 22 to Figure 24 is manufactured by first manufacturing a low-band element main body 122 using a mold into which a plastic resin material is injected, and then printing the dipole pattern 126 and the internal feeding patterns 124a and 124b using a PEP process.

[0249] However, when the dipole pattern 126 and the internal feeding patterns 124a and 124b are printed in the form of a metal plating layer on the surface of the plastic resin material in an arbitrary manner, the bonding structure of the pattern printing portion can cause a PIMD phenomenon due to factors such as the surface roughness of the molded part made of the plastic resin.

[0250] ​Furthermore, the molded parts made of plastic resin are cured bodies that do not deform. Typically, in antenna devices using Massive MIMO technology, the radiating elements 120 and 130, which contain multiple low-frequency components, are positioned in front of an antenna plate assembly or reflector panel that is elongated (approximately 2m) in the vertical direction relative to the horizontal width direction. Therefore, there is a problem that they cannot accommodate the bending characteristics of the antenna plate assembly or reflector panel. Thus, although the cured molding of the radiating elements 120 and 130 can achieve its own rigidity, it may actually exacerbate the PIMD problem.

[0251] To address the aforementioned problems, an alternative implementation of the radiating element 1120 according to an embodiment of the present invention is proposed, particularly a low-frequency element 1120.

[0252] The embodiment of the low-frequency component 120 with a plastic resin molded part as the skeleton is referred to as the "first embodiment", and the embodiment of the low-frequency component 1120 with a conductive sheet panel as the skeleton is referred to as the "second embodiment".

[0253] The first embodiment 120 and the second embodiment 1120 have predetermined differences in manufacturing methods as described above. That is, the first embodiment 120 is achieved by manufacturing the low-frequency component body 122 constituting the skeleton through injection molding in the mold process, and then printing the internal power supply patterns 124a, 124b and dipole patterns 126a, 126b through PEP process or other pattern printing methods. In contrast, the second embodiment 1120 is manufactured by manufacturing a conductive sheet panel with a predetermined thickness through a stamping mold process, and then fixing at least one dipole 1126-Aa, 1126-Ab, 1126-Ba, 1126-Bb (hereinafter collectively referred to as "1126") and the first power supply wire 1124a and the second power supply wire 1124b fed to it respectively. The two have the differences described above.

[0254] More specifically, such as Figure 22 and Figure 21 As shown, in an antenna radiating element according to an embodiment of the present invention, the low-frequency element 1120 according to another embodiment may include: a base panel 1122, which is stacked and combined parallel to the front of the reflective panel 110; and at least one dipole 1126, which is bent in different directions from the base panel 1122 and extends forward and radiates polarized beams that are different from each other.

[0255] The base panel 1122 and at least one dipole 1126 may be composed of conductive sheet panels of the same thickness.

[0256] The base panel 1122 functions as a fixed surface in mutual surface contact when fixed to the front of the reflecting panel 110, and a central portion of the base panel 1122 can form an element installation hole 1121 so that a portion of the mid-band element 130 is installed through in a region P2 in which beam interference is present.

[0257] The at least one dipole 1126 can include dipole radiation ends 1126a, 1126b that are spaced apart and symmetrically arranged with respect to the edge end portions formed in the above-described extension direction.

[0258] For example, in the radiation element for an antenna according to an embodiment of the present application, in the low-band element 1120 according to the second modification, the base panel 1122 is manufactured in a square shape having substantially four vertices, and the dipole radiation ends 1126a, 1126b can be formed by extending radially from the vertices while forming edges.

[0259] At this time, the dipole radiation ends 1126a, 1126b are symmetrically formed at a predetermined interval from each other at the edge end portions, and can be separated by the separation slit 1125.

[0260] In addition, the at least one dipole 1126 is formed to occupy four edge portions extending radially forward from each vertex (i.e., four vertices) of the square base panel 1122, and is extended to have a square trapezoidal modification shape having four edges with an area of a vertical cross section of a virtual square having vertices connected as a front protruding end at the same distance gradually increasing toward the front.

[0261] On the other hand, as shown in Figure 21 and Figure 22 to Figure 24 The at least one dipole 1126 can include a pair of first dipoles 1126-Aa, 1126-Ab occupying two edges in a diagonal direction of one of the four edges participating in one of the above-described different polarized beams, and a pair of second dipoles 1126-Ba, 1126-Bb occupying two edges in a diagonal direction of another of the four edges participating in another of the above-described different polarized beams.

[0262] The pair of first dipoles 1126-Aa, 1126-Ab and the pair of second dipoles 1126-Ba, 1126-Bb can be separated by the separation slit 1125 formed along the edge portions occupied by each dipole, so as to form the dipole radiation ends 1126a, 1126b.

[0263] The low-band element 1120 of the second embodiment formed of the base panel 1122 and the at least one dipole 1126 can be manufactured by manufacturing the at least one dipole 1126 as a separate object and then detachably coupling the at least one dipole 1126 to the base panel 1122.

[0264] However, the manufacturing method of the low-band element 1120 of the second embodiment is not limited to the method of separately manufacturing the base panel 1122 and the at least one dipole 1126 and then combining them as described above, and the manufacturing method can be modified as follows. Figure 25a For example, the single piece of conductive sheet panel can be cut into a pattern by a press die, and then the base panel 1122 and the at least one dipole 1126 can be bent at intervals to have the dipole radiating ends 1126a, 1126b that are symmetric to each other.

[0265] On the other hand, as shown in FIG. 12, in the low-band element 1120 according to the second embodiment, the pair of first dipoles 1126-Aa, 1126-Ab and the pair of second dipoles 1126-Ba, 1126-Bb each include: rear end radiating ends 1126a-1, 1126b-1 that are parallel to the separation slit 1125 and extend along the edges in parallel; and front end radiating ends 1126a-2, 1126b-2 that are bent from the front ends of the rear end radiating ends 1126a-1, 1126b-1 and extend to positions corresponding to the vertices of the adjacent edges. Figure 25b

[0266] Therefore, the edge portions of the at least one dipole 1126 that is manufactured in a square deformed shape are separated by the separation slit 1125 and are symmetric to each other with the separation slit 1125 as a reference, so that the dipole radiating ends 1126a, 1126b are branched in a substantially "T" shape at the front end portion, and the radiating end portions before the branch at the front end portion are defined as the rear end radiating ends 1126a-1, 1126b-1, and the radiating end portions after the branch at the front end portion are defined as the front end radiating ends 1126a-2, 1126b-2.

[0267] As shown in FIG. 12, in the low-band element 1120 according to the second embodiment, the pair of first dipoles 1126-Aa, 1126-Ab and the pair of second dipoles 1126-Ba, 1126-Bb each include: rear end radiating ends 1126a-1, 1126b-1 that are parallel to the separation slit 1125 and extend along the edges in parallel; and front end radiating ends 1126a-2, 1126b-2 that are bent from the front ends of the rear end radiating ends 1126a-1, 1126b-1 and extend to positions corresponding to the vertices of the adjacent edges. Figure 26

[0268] Hereinafter, the configuration that feeds the pair of first dipoles 1126-Aa, 1126-Ab will be defined as the first feed line 1124a, and the configuration that feeds the pair of second dipoles 1126-Ba, 1126-Bb will be defined as the second feed line 1124b.

[0269] ​​One of the first and second feed lines 1124a and 1124b can be fixed to one of the front and back surfaces of the pair of first dipoles 1126-Aa and 1126-Ab and the pair of second dipoles 1126-Ba and 1126-Bb, and the other of the first and second feed lines 1124a and 1124b can be fixed to the other of the front and back surfaces of the pair of first dipoles 1126-Aa and 1126-Ab and the pair of second dipoles 1126-Ba and 1126-Bb.

[0270] In the embodiment of the present application, the first feed line 1124a is designed to be disposed on the front (i.e., inner side) of the pair of first dipoles 1126-Aa and 1126-Ab and the pair of second dipoles 1126-Ba and 1126-Bb, and the second feed line 1124b is designed to be disposed on the back (i.e., outer side) of the pair of first dipoles 1126-Aa and 1126-Ab and the pair of second dipoles 1126-Ba and 1126-Bb.

[0271] The first and second feed lines 1124a and 1124b, after being connected to the feed input terminals provided on the front side of the reflection panel 110, can be routed to branch and extend toward the dipole radiating ends 1126a and 1126b of the pair of first dipoles 1126-Aa and 1126-Ab and the pair of second dipoles 1126-Ba and 1126-Bb.

[0272] At this time, in order to enable the first and second feed lines 1124a and 1124b to be connected to the feed input terminals on the same side as the base panel 1122, the feed setting holes 1123 can be provided, which are formed to pass through the inside and outside in a manner connected to the end portions of the separation slits 1125 for maintaining the interval between the base panel 1122 and the dipoles 1126.

[0273] In the low-frequency band element 120 according to the first embodiment, the internal feed patterns 124a and 124b corresponding to the first and second feed lines 1124a and 1124b are pattern-printed on the inner side of the low-frequency band element body 122 by the PEP process, but in order to feed the dipole patterns 126 located in the diagonal double direction, it is inevitable to have a structure in which a part of the internal feed patterns 124a and 124b is cross-routed, and in order to prevent mutual short-circuiting between the internal feed patterns 124a and 124b, it is necessary to form a through-hole structure (not shown by reference numerals) passing through the inner and outer sides of the low-frequency band element body 122, and there is a design complication as described above.

[0274] To solve the above design problem (i.e., to prevent the first feeding line 1124a and the second feeding line 1124b from crossing each other), the low-band element 1120 according to the second embodiment can be arranged separately on the inner side and the outer side of the dipole 1126 that simultaneously assumes the function of an antenna element and the function of a skeleton. Thus, without the above-mentioned through-hole structure, there is the advantage of being able to prevent the loss caused by its provision.

[0275] However, in the low-band element 120 according to the first embodiment, since the low-band element main body 122 constituting the skeleton is made of a plastic resin as a non-conductive material, the internal feeding patterns 124a, 124b can be conveniently pattern-printed by the PEP process, which is advantageous in terms of manufacturing, but there is still the disadvantage of the above-mentioned PIMD problem.

[0276] On the contrary, as shown in Figure 25a and 28b , in the low-band element 1120 according to the second embodiment, the dipole 1126 constituting the skeleton and the first feeding line 1124a and the second feeding line 1124b are all made of a conductive material, and thus, to prevent mutual short-circuiting, the dipole can be provided in the form of an air strip line supported at a predetermined interval with respect to the front or back of the pair of first dipoles 1126-Aa, 1126-Ab and the second dipoles 1126-Ba, 1126-Bb.

[0277] To this end, the low-band element 1120 according to the second embodiment can further include at least one feeding line spacing portion 1129C for maintaining the first feeding line 1124a and the second feeding line 1124b at an interval with respect to the front or back of the pair of first dipoles 1126-Aa, 1126-Ab and the second dipoles 1126-Ba, 1126-Bb.

[0278] As shown in Figure 25b , the feeding line spacing portion 1129C is fixed to the front or back of the pair of first dipoles 1126-Aa, 1126-Ab and the second dipoles 1126-Ba, 1126-Bb, and includes a seating main body 1129C-1 for supporting the first feeding line 1124a and the second feeding line 1124b and a fixing portion 1129C-2 for fixing the first feeding line 1124a and the second feeding line 1124b seated on the seating main body 1129C-1. The seating main body 1129C-1 and the fixing portion 1129C-2 can be combined by screw fixing using a fixing screw not shown in the drawing.

[0279] On the other hand, as shown in Figure 27a to Figure 27c and Figure 25aAs shown, the first feeding line 1124a and the second feeding line 1124b can be respectively connected in conduction with a pair of rear end radiation ends 1126a-1, 1126b-1 separated from each other based on the separation slit 1125.

[0280] However, since the pair of rear end radiators 1126a-1, 1126b-1 are isolated from each other by the separation slit 1125 as described above, a connection terminal 1128 for simultaneously connecting in conduction with the first feeding line 1124a and the second feeding line 1124b can be additionally formed on one of the pair of rear end radiation ends 1126a-1, 1126b-1.

[0281] More specifically referring to Figure 28a As explained, the first feeding line 1124a is branched and extended in the direction of the pair of first dipoles 1126-Aa, 1126-Ab, and arranged to occupy one of the pair of rear end radiation ends 1126a-1, 1126b-1, the front end of the first feeding line 1124a is bent to one side and extended to the other side of the other rear end radiation end 1126a-1, 1126b-1 not occupied.

[0282] At this time, the connection terminal 1128 is arranged to overlap the front end of the first feeding line 1124a on the other side of the other rear end radiation end 1126a-1, 1126b-1 not occupied by the first feeding line 1124a, and the overlapped first feeding line 1124a and each part of the pair of rear end radiation ends 1126a-1, 1126b-1 are welded by laser spot welding, thereby achieving mutual feeding conduction.

[0283] The front end part of the first feeding line 1124a can be formed with at least one spot welding hole 1124a-L for laser spot welding.

[0284] On the other hand, in the low frequency band element 1120 according to the second embodiment, when at least one dipole 1126 participates in the polarization beam radiation of the first frequency band, as described above, an element arrangement hole 1121 can be formed on the base panel 1122, the element arrangement hole 1121 is provided for the middle frequency band element 130 participating in the polarization beam radiation of a higher second frequency band (for example, a middle frequency band) relative to the first frequency band.

[0285] Here, the element arrangement hole 1121 is preferably made at least to a size that does not cause physical interference between the balun parts 133 of the middle frequency band elements 130.

[0286] And, as described above, in the low frequency band element 1120 according to the second embodiment, a grounding part 1121G performing the grounding (ground) function of the middle frequency band element 130 can also be formed.

[0287] The ground portion 1121G can be integrally formed to connect the rear end portion radiating end 1126a-1, 1126b-1 of one of the pair of first dipoles 1126-Aa, 1126-Ab with the rear end portion radiating end 1126a-1, 1126b-1 of any one of the pair of second dipoles 1126-Ba, 1126-Bb.

[0288] At this time, it is preferable that the ground portion 1121G be integrally formed in such a manner that the front end of the ground portion 1121G is positioned further forward than the front end of the mid-frequency band element 130 disposed through the element disposing hole 1121.

[0289] On the other hand, since the low-frequency band element 1120 according to the second embodiment is different from the low-frequency band element 120 according to the first embodiment in terms of manufacturing method, an additional shape maintaining component for maintaining the skeleton (or shape) like the low-frequency band element main body 122 is required.

[0290] More specifically, the low-frequency band element 1120 according to the second embodiment can further include a shape maintaining member 1129A for maintaining a predetermined interval between the pair of rear end portion radiating ends 1126a-1, 1126b-1 separated by the separation slit 1125, and a shape maintaining connector 1129B for connecting the front end of the front end portion radiating end 1126a-2, 1126b-2 of one of the pair of first dipoles 1126-Aa, 1126-Ab with the front end of the front end portion radiating end 1126a-2, 1126b-2 of one of the pair of second dipoles 1126-Ba, 1126-Bb to maintain the shape.

[0291] The shape maintaining member 1129A and the shape maintaining connector 1129B described above are made of a non-conductive material, and function to block signal communication between the pair of dipole radiating ends 1126a, 1126b while maintaining the rigidity of the low-frequency band element 1120 according to the second embodiment.

[0292] The shape maintaining member 1129A and the shape maintaining connector 1129B described above are not for completely maintaining the shape of the low-frequency band element 1120, but allow the low-frequency band element 1120 according to the second embodiment to deform correspondingly at least when the reflection panel 110 is bent due to a large up-and-down dimension.

[0293] The reason for this is that if the low-frequency band element 1120 is completely unable to cope with the bending of the reflection panel 110 in terms of shape, the PIMD problem can be exacerbated. The applicant of the present application has confirmed through self-checking that, for the bending of the reflection panel 110, as long as the low-frequency band element 1120 is allowed to deform correspondingly within limits that do not affect the pattern beam radiation of the low-frequency band element 1120, the PIMD problem can be improved.

[0294] To this end, it is preferable that the base panel 1122 and the at least one dipole 1126 are made of a sheet of conductive material (e.g., aluminum material) having a thickness that can be deformed in correspondence with the flexure of the reflecting panel 110.

[0295] Further, in the low-band element 1120 according to the second embodiment, the front end radiation ends 1126a-2, 1126b-2 of the at least one dipole 1126 are bent with respect to the rear end radiation ends 1126a-1, 1126b-1, and can be vertically bent with respect to the front face of the reflecting panel 110.

[0296] More specifically, the front end radiation ends 1126a-2, 1126b-2 of the at least one dipole 1126 can have a bent face that is vertically bent with respect to the front face of the reflecting panel 110, so as to avoid beam interference with the mid-band elements 130 arranged between adjacent radiation elements (i.e., the low-band elements 1120).

[0297] Here, the front end radiation ends 1126a-2, 1126b-2 can be bent so as to reduce the vertical cross-sectional area thereof with respect to the vertical cross-sectional area of the square front end of the radiation element (i.e., the low-band element 1120) that does not have a bent face.

[0298] On the other hand, the front ends 1120E-1, 1120E-2 of the front end radiation ends 1126a-2, 1126b-2 are spaced apart from the front ends of the adjacent front end radiation ends 1126a-2, 1126b-2, and are formed by first extending in a direction parallel to the side face of the front end radiation ends 1126a-2, 1126b-2, and then being bent in the direction of the element arrangement hole 1121.

[0299] This can perform the same function as the bent front ends 126E-1, 126E-2 of the pair of dipole radiation ends 126a, 126b of the low-band element 120 according to the first embodiment.

[0300] Figure 28b is a perspective view showing a mid-band element in the configuration of an antenna device according to an embodiment of the present application, Figure 25a is Figure 29 an exploded perspective view of Figure 25a is Figure 19 to Figure 24 a front view and a back view of Figure 18a is Figure 18b a side view of Figure 25a is another embodiment of a mid-band element in the configuration of an antenna device according to an embodiment of the present application, Figure 25b is Figure 19 an exploded perspective view of

[0301] As Figure 25a to Figure 27cAs shown, the plurality of mid-frequency components 130 may include: a base panel 138 for mediating a connection with the reflective panel 110; a balun 133 whose rear end is fixed to the base panel 138 and has external feed patterns 133a-1 and 133a-2 printed thereon; a radiating panel 131 formed by dipole patterns 132a and 132b fixed to the front end of the balun 133 and connected to the external feed patterns 133a-1 and 133a-2, thereby radiating a beam of a predetermined mode; and a radiation guide 134 stacked in front of the radiating panel 131.

[0302] The dipole patterns 132a and 132b formed on the radiating panel 131 are made of conductive material and are arranged in an "X" shape on the radiating panel 131, which serves to form +45° and -45° polarized beams.

[0303] On the other hand, in the external power feeding patterns 133a-1 and 133a-2, a portion of the end forming the dipole patterns 132a and 132b can be bent toward the reflective panel 110.

[0304] Here, it is not necessary to bend the external feed patterns 133a-1 and 133a-2. As long as the mode beam of the inner mid-frequency element 130I, which passes through the element through hole 121 of the low-frequency element 120, is not affected by the low-frequency element 120, it is fine even if it is not bent.

[0305] For example, such as Figure 25a to Figure 27c As shown, when the mid-frequency band element 130 further includes an extended guide panel 136 spaced forward from the radiating guide 134, it is not necessary to bend the external feed patterns 133a-1 and 133a-2 to minimize the impact of the low-frequency band element 120 on the mode beam interference.

[0306] The radiation guide 134 can be formed by protruding forward in front of the radiation panel 131 through the mounting bracket 135.

[0307] The function of the radiation guide 134 is to reduce the influence of the mode beam of the low-frequency component 120, and at the same time guide the mode beam radiation direction of the mid-frequency component 130 to the positive direction.

[0308] In addition, the extension guide panel 136 can be connected via an extension connector 137 extending from the front end of the radiation guide 134.

[0309] However, as Figure 28a and Figure 29 As shown, in embodiments where the extended guide panel 136 is not provided, it is preferable to minimize the radiation interference of the mode beam by bending the external feed patterns 133a-1 and 133a-2.

[0310] On the other hand, the external feed patterns 133a-1, 133a-2 of the balun 133 can be connected to the second transmission line 300 through the lead terminals 139a, 139b.

[0311] The front ends 139-A, 139-B of the lead terminals 139a, 139b respectively penetrate the base panel 138 and are respectively connected to the external feed patterns 133a-1, 133a-2, and are connected through a pair of soldering pins 140a, 140b.

[0312] As described above, the antenna device 1 of the radiating element for an antenna according to an embodiment of the present application arranges the low-band element 120 and the mid-band element 130 related to the dual-band in an overlapping manner, and minimizes the interference between the respective mode beams by reducing the low-band element 120 to an appropriate size, thereby having the advantage of improving the beamforming performance.

[0313] Figure 27a is a partial front view of a first transmission line in a case where a phase difference is achieved by adjusting the position and depth of an impedance matching step of a phase medium in a configuration of a phase shifter of an antenna device according to an embodiment of the present application, and a graph (b) showing an ideal phase difference.

[0314] As described above, the antenna device 1 according to an embodiment of the present application, the low-band elements 120 can be arranged at intervals in the up-and-down direction (V-direction) so that six low-band elements constitute a single RF link. Here, the interval distance between the respective low-band elements 120 can be the same, denoted as ΔX. This is because, in general, when the phase shifters 400A operate, if the phase difference (ΔX) between the low-band elements 120 is the same, the sidelobe formed at the time of beamforming can be minimized, and the gain reduction caused thereby can also be minimized.

[0315] In other words, in the phase shifters 400A, 400B of the antenna device 1 according to an embodiment of the present application, the phase values changed by the low-band phase shifter 400A are preferably driven to have the same phase difference with respect to a reference phase as shown in part (b) of FIG. 4. Figure 27c

[0316] However, as described above, the phase medium 450 is moved by the plurality of vertical movement rods 430 in linkage with the movement clamp 440, and is arranged at the first branch point S1, the second branch point S2, and the third branch point S3, respectively, and in order to achieve the same phase difference (ΔX) described above, the movement distance of the phase medium 450 arranged at the respective branch points S1, S2, S3 must be different.

[0317] ​As described above, the physical space limitations of the first transmission line 200, which is arranged in the form of an air strip, cause the phase medium 450 arranged at each branch point S1, S2, S3 to move by different distances, resulting in the need for a separate drive mechanism to drive each phase medium 450 independently.

[0318] Among them, such as Figure 27a Figure 30 Figure 31 Figure 30 Figure 32 Figure 30 Figure 33 Figure 30 Figure 34 Figure 35 Figure 34 Figure 30 to Figure 35 Figure 30 to Figure 33 Figure 34 Figure 35 Figure 36 Figure 31 Figure 36 As shown, in the phase shifters 400A and 400B of the antenna device 1 according to an embodiment of the present invention, if the target phase value of each low-frequency band element 120 is set to a maximum value of +2.5X and a minimum value of -2.5X, in order to make each low-frequency band element 120 have the same phase difference (ΔX), the phase medium 450 arranged at the first branch point S1 is processed to form an impedance matching step 455, so that it generates a phase difference of +1.5X and -1.5X relative to the upper transmission line 220U and the lower transmission line 220D, respectively. The phase medium 450 arranged at the second branch point S2 and the third branch point S3 is processed to form an impedance matching step 455, so that it generates a phase difference of +1X with respect to the upper branch transmission line 230-1 (excluding the middle branch transmission line 230-2) and a phase difference of -1X with respect to the lower branch transmission line 230-3.

[0319] As described above, the phase shifters 400A and 400B of the antenna device 1 in one embodiment of the present invention change the effective dielectric constant by forming different impedance matching steps 455 on the phase medium 450, so that even if the phase medium 450 moves the same distance physically, it can be changed into different electrical phases.

[0320] The radiating element for an antenna according to an embodiment of the present invention has been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not necessarily limited to the above-described embodiment, and various modifications and equivalent implementations can be made by those skilled in the art to which this invention pertains. Therefore, the true scope of protection of the present invention should be defined by the appended claims.

[0321] Industrial applicability

[0322] The present invention provides an antenna device that can adopt a structure in which multiple radiating elements of different frequency bands are arranged in an optimal manner to improve antenna gain and achieve lightweight manufacturing of the entire product by reducing the weight of components.

Claims

1. A radiating element for an antenna, characterized by Comprising: a base panel, which is combined in parallel with the front of the reflecting panel in a layering manner; and at least one dipole, which is bent and extended from the above-mentioned base panel in different directions respectively to form four sides, and is bent at an acute angle with respect to the above-mentioned base panel.

2. The radiating element for an antenna according to claim 1, wherein the above-mentioned at least one dipole radiates polarized beams which are different from each other.

3. The radiating element for an antenna according to claim 2, wherein the above-mentioned base panel and the above-mentioned at least one dipole are both composed of a conductive sheet panel having the same thickness, the above-mentioned at least one dipole realizes a radiation pattern of at least one polarization.

4. The radiating element for an antenna according to claim 3, wherein the above-mentioned at least one dipole includes dipole radiation ends, which are spaced apart and symmetrical to each other with reference to the edge end formed in the above-mentioned extending direction, thereby realizing a radiation pattern of the same polarization.

5. The radiating element for an antenna according to claim 4, wherein the spacing distance between the above-mentioned dipole radiation ends is maintained by a shape maintaining member.

6. The radiating element for an antenna according to claim 1, wherein the above-mentioned at least one dipole is manufactured as a separate object and then combined to the above-mentioned base panel in a detachable manner.

7. The radiating element for an antenna according to claim 1, wherein the above-mentioned base panel and the above-mentioned at least one dipole are integrally manufactured by a press die, and are spaced apart and symmetrical to each other with reference to the edge end formed in the above-mentioned extending direction, thereby being spaced apart and bent in a manner of having dipole radiation ends which realize a radiation pattern of the same polarization.

8. The radiating element for an antenna according to claim 1, wherein the above-mentioned at least one dipole is formed to have four edges which extend radially forward from the respective vertices of the square-shaped above-mentioned base panel and gradually increase the vertical sectional area corresponding to the front end of the respective vertices.

9. The radiating element for an antenna according to claim 8, wherein the above-mentioned at least one dipole includes: a pair of first dipoles, which participate in one of the above-mentioned different polarized beams and respectively occupy two edges in a diagonal direction of one of the above-mentioned four edges; and a pair of second dipoles, which participate in another of the above-mentioned different polarized beams and respectively occupy two edges in a diagonal direction of another of the above-mentioned four edges, the above-mentioned pair of first dipoles and the above-mentioned pair of second dipoles are spaced apart from each other by a separation slit formed along the edge part occupied by each, to form the above-mentioned dipole radiation ends.

10. The radiating element for an antenna according to claim 8, wherein the above-mentioned pair of first dipoles and the above-mentioned pair of second dipoles respectively include: a rear end part radiation end, which extends in parallel along the above-mentioned separation slit and in parallel along the above-mentioned edge; and a front end part radiation end, which is bent and extended from the front end of the above-mentioned rear end part radiation end and extends toward a position corresponding to the vertex of the adjacent edge.

11. The radiating element of claim 11, wherein Further comprising a first feed line and a second feed line which apply predetermined electric signals to the above-mentioned pair of first dipoles and the above-mentioned pair of second dipoles.

12. The radiating element for an antenna according to claim 11, wherein One of the first and second feed lines is fixed to one of the front or back of the pair of first dipoles and the pair of second dipoles, and the other of the first and second feed lines is fixed to the other of the front or back of the pair of first dipoles and the pair of second dipoles.

13. The radiating element for an antenna according to claim 11, wherein the first and second feed lines have an air strip line shape supported at a predetermined distance from the front or back of the pair of first dipoles and the pair of second dipoles.

14. The radiating element of claim 13, wherein, Further comprising at least one feed line spacing portion for maintaining the first and second feed lines at a distance from the front or back of the pair of first dipoles and the pair of second dipoles.

15. The radiating element for an antenna according to claim 11, wherein the first and second feed lines are respectively connected to a pair of back end radiation ends separated from the separation slit.

16. The radiating element for an antenna according to claim 15, wherein a connection terminal for connecting the first and second feed lines is further formed on one of the pair of back end radiation ends.

17. The radiating element for an antenna according to claim 10, wherein when the at least one dipole participates in polarized beam radiation of a first frequency band, an element setting hole is formed in the base panel for a middle frequency band element participating in polarized beam radiation of a second frequency band higher than the first frequency band to penetrate in the front-back direction.

18. The radiating element of claim 17, wherein, Further comprising a ground portion integrally formed to connect a back end radiation end of one of the pair of first dipoles and a back end radiation end of one of the pair of second dipoles.

19. The radiating element for an antenna according to claim 18, wherein a front end of the ground portion is located at least further forward than a front end of the middle frequency band element.

20. The radiating element of claim 10, wherein, Further comprising a shape maintaining connector for connecting a front end of a front end radiation end of one of the pair of first dipoles and a front end of a front end radiation end of one of the pair of second dipoles to maintain the shape.

21. The radiating element for an antenna according to claim 17, wherein the front end radiation end is bent with respect to the back end radiation end and is perpendicularly bent with respect to the front of the reflection panel.

22. The radiating element for an antenna according to claim 17, wherein the front end radiation end is bent to reduce the perpendicular cross-sectional area with respect to the perpendicular cross-sectional area of the square front end of the radiating element without the bent face, thereby avoiding beam interference of the middle frequency band element arranged between adjacent radiating elements.

23. The radiating element for an antenna according to claim 17, wherein a front end of the front end radiation end is spaced apart from a front end of an adjacent front end radiation end and is formed by being bent from a side surface of the front end radiation end in parallel to the side surface toward the element setting hole.

24. The radiating element of claim 1, wherein The base panel and the at least one dipole are formed of a sheet of conductive material having a thickness that is capable of shape deformation in response to flexing of the reflector panel.

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