Radiating element for antenna

Abstract

To provide an antenna radiating element that improves antenna gain and reduces the weight of the product. [Solution] The antenna radiating element includes a base panel stacked and bonded parallel to the front surface of a reflecting panel, and at least one dipole formed by bending and extending from the base panel in different directions, each radiating a beam with different polarization.

Description

Technical Field

[0001] The present invention relates to a radiating element of an antenna. More specifically, the present invention relates to a radiating element of an antenna that can optimally arrange radiating elements in different frequency bands so as to improve the antenna gain, and can reduce the weight of components to reduce the weight of the product.

Background Art

[0002] Recently, as an antenna device for an antenna device for a mobile communication base station and a Wi-Fi communication device, a multi-band antenna device capable of communicating in a plurality of frequency bands has been practically arranged in order to ensure communication capacity.

[0003] Generally, in a wireless communication network such as a mobile communication network or a wireless subscriber line, a base station is installed between an exchange and a subscriber terminal, and a wireless signal is exchanged between the base station and the subscriber terminal.

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

[0005] Recently, existing mobile communication carriers have acquired business rights in other frequency bands outside the frequency bands previously allocated, diversifying their services. In response to the requirements of such changes in the radio wave environment, there is a need for changes in beam characteristics such as the beam width and beam tilt of an antenna (radiating element).

[0006] That is, when the beam width of a communication antenna or a broadcast antenna is of a fixed type, when steering or tilting the beam, there is a problem that a person has to climb up the tower and manually control the antenna. Therefore, recently, a structure corresponding to changes in beam characteristics such as beam steering and beam tilting has been applied by the transition of the phase value due to the change in the physical length of the transmission line for the radiating element.

[0007] However, while phase shifters are necessary to accommodate changes in the physical length of the transmission line, the space occupied by these phase shifters is relatively large, hindering product slimming and also contributing to increased manufacturing costs due to the complexity of the transmission line.

[0008] On the other hand, a multiband antenna system includes multiple dipole-type antenna patch elements to radiate beam patterns with operating frequencies across multiple frequency bands.

[0009] Such a multiband antenna device constitutes an antenna array in which cross-bio antenna patch elements for multiple frequency bands (hereinafter referred to as "radiating elements," LB antenna: Low Band antenna, MB antenna: Mid Band antenna) are arranged alternately on a reflector.

[0010] Here, the arrangement of the radiating elements of the LB antenna and MB antenna (hereinafter, the antenna patch elements of the LB antenna will be abbreviated as "low-band elements," and the antenna patch elements of the MB antenna will be abbreviated as "mid-band elements") on the reflector is preferably such that the beam patterns formed by the radiation emitted from each radiating element are formed directly and without mutual interference.

[0011] However, since spaced-out arrangement of radiating elements inevitably increases the overall size of the product, recently, mid-band elements with relatively small radiating surface areas are arranged closer to the reflector, while low-band elements with relatively large radiating surface areas are arranged in front of them, in the direction of their radiation.

[0012] Thus, in recent years, research has been actively conducted on the most efficient and superimposed arrangement of multiple radiating elements used in multiband antenna devices to achieve optimal antenna gain. Currently, efforts are being made to reduce the volume occupying the thickness in the front-to-back direction and the weight of the components as much as possible, thereby making the overall product slimmer and lighter. [Overview of the project] [Problems that the invention aims to solve]

[0013] The present invention has been made to solve the above technical problems, and aims to provide an antenna radiating element that allows for the optimal arrangement of multiple radiating elements in a multiband antenna device so that the antenna gain is good.

[0014] In addition, another objective of the present invention is to provide an antenna radiating element that can minimize the weight of its components and thereby reduce the overall weight of the product.

[0015] Another objective of this invention is to provide an antenna radiating element that enables the slimming down of an antenna device by minimizing the thickness occupied by a predetermined component in the front-to-back direction. Furthermore, the present invention aims to provide an antenna radiating element that can improve the PIMD problem.

[0016] The problems addressed by the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0017] An antenna radiating element according to one embodiment of the present invention includes a base panel laminated parallel to the front surface of a reflecting panel, and at least one dipole formed by bending and extending from the base panel in different directions to radiate beams with different polarizations, wherein the base panel and the at least one dipole are provided by conductive sheet panels having the same thickness, and the at least one dipole includes dipole radiating ends that realize at least one polarization radiation pattern and are spaced apart and symmetrical with respect to the corner ends formed in the extended direction to realize a radiation pattern of the same polarization.

[0018] Here, the separation distance between the dipole radiation ends can be maintained by the shape-retaining member.

[0019] Furthermore, the base panel can be detachably connected to the at least one dipole after it has been manufactured as a separate component.

[0020] Furthermore, the base panel and the at least one dipole may be manufactured integrally by a press die and then bent apart to have the symmetrical poles.

[0021] Furthermore, the at least one dipole may be formed to extend radially forward from each vertex of the square-shaped base panel and have four corners in which the area of ​​the vertical cross-section corresponding to the front end of each vertex gradually increases.

[0022] Furthermore, the at least one dipole includes a pair of first dipoles that are involved in one of the different polarization beams and occupy both diagonal corners of any one of the four corners, and a pair of second dipoles that are involved in another of the different polarization beams and occupy both diagonal corners of the other one of the four corners, wherein the pair of first dipoles and the pair of second dipoles can be separated by separation slits formed along the corner portions they occupy to form the dipole radiation ends.

[0023] Further, each of the pair of first dipoles and the pair of second dipoles may include a rear end radiation end extending parallel to the separation slit along the angle, and a front end radiation end that is bent and extended from the front end of the rear end radiation end and extends to a portion corresponding to the vertex of an adjacent angle.

[0024] Furthermore, a first feed line and a second feed line for applying a predetermined electrical signal to the pair of first dipoles and the pair of second dipoles may be further included.

[0025] Also, either one of the first feed line and the second feed line may be fixed to either the front surface or the back surface of the pair of first dipoles and second dipoles, and the other one of the first feed line and the second feed line may be fixed to the other one of the front surface or the back surface of the pair of first dipoles and second dipoles.

[0026] Moreover, the first feed line and the second feed line may be provided in the form of an air strip line spaced apart from the front surface or the back surface of the pair of first dipoles and second dipoles by a predetermined distance.

[0027] In addition, at least one feeder separation portion for separating the first feed line and the second feed line from the front surface or the back surface of the pair of first dipoles and second dipoles may be further included.

[0028] Also, the first feed line and the second feed line can be connected so as to simultaneously energize a pair of rear end radiation ends separated with respect to the separation slit.

[0029] Further, a connection terminal for connecting to the first feed line and the second feed line so as to be energized may be additionally formed on either one of the pair of rear end radiation ends.

[0030] Furthermore, when at least one dipole is involved in polarization beam radiation in a first frequency band, the base panel may have element mounting holes formed through which a mid-band element involved in polarization beam radiation in a second frequency band, which has a relatively larger frequency band than the first frequency band, penetrates in the front-to-back direction.

[0031] Furthermore, it may further include a ground portion integrally formed to connect the rear end radiating end of any one of the pair of first dipoles and the rear end radiating end of any one of the pair of second dipoles.

[0032] Furthermore, the front end of the ground portion can be positioned at least forward of the front end of the mid-band element.

[0033] The device may further include a shape-retaining connector that interconnects the tip of the front end radiating end of any one of the pair of first dipoles with the tip of the front end radiating end of any one of the pair of second dipoles to maintain their shape.

[0034] Furthermore, the front radial end may be bent relative to the rear radial end and bent perpendicular to the front surface of the reflecting panel.

[0035] Furthermore, the front end radiating edge may be bent to reduce the area of ​​its vertical cross-section relative to the area of ​​the square front end of the low-band element that does not have a bent surface, in order to avoid beam interference with the mid-band element that is positioned between adjacent low-band elements.

[0036] Furthermore, the tip of the front end radiating end may be separated from the tip of the adjacent front end radiating end, extend parallel to the side surface of the front end radiating end, and be bent in the direction of the element mounting hole to be extended in a parallel manner.

[0037] Furthermore, the base panel and the at least one dipole may be provided in the form of a sheet of conductive material having a thickness that allows it to deform in shape to correspond to the flow of the reflecting panel. [Effects of the Invention]

[0038] According to one embodiment of the present invention, the antenna radiating element can be optimally arranged to realize the function of a multiband antenna, thereby improving the antenna gain. Furthermore, it has the effect of reducing the overall weight of the product by reducing the weight of the heavy reflecting panel.

[0039] In addition, the present invention enables phase value transitions due to changes in the dielectric constant of the dielectric without the need to physically change the length of the transmission line provided in the form of an air strip line. Therefore, it not only enables the slimming down of the product during manufacturing but also has the effect of reducing costs in the product manufacturing process.

[0040] Furthermore, the present invention has the effect of improving the PIMD problem by enabling the shape deformation of a reflecting panel or antenna board assembly that is formed to be long in the vertical direction in response to flow caused by external factors. [Brief explanation of the drawing]

[0041] [Figure 1] This is a perspective view showing the external appearance of an antenna device equipped with a phase shifter according to one embodiment of the present invention. [Figure 2A] This is a front-side exploded perspective view of the configuration shown in Figure 1, with the antenna housing section separated. [Figure 2B] This is a rear-side exploded perspective view of the configuration shown in Figure 1, with the antenna housing section separated. [Figure 3] This is a perspective view showing the external appearance of the configuration in Figure 1(a) with the radome panel removed. [Figure 4] This is a perspective view showing the external appearance of the configuration in Figure 1(b) with the rear panel removed. [Figure 5] This is a perspective view showing an antenna board assembly equipped with a phase shifter according to one embodiment of the present invention. [Figure 6] This is an exploded perspective view showing the configuration of Figure 5 with the low-band and mid-band elements separated. [Figure 7] This is an exploded perspective view showing the configuration of Figure 5 with only the low-band element separated. [Figure 8] Figure 5 is an exploded perspective view showing the overlapping placement of the low-band and mid-band elements in the configuration. [Figure 9A] Figure 5 is an exploded perspective view showing the front portion of the reflecting panel where the low-band element and the mid-band element are provided. [Figure 9B] Figure 5 shows an exploded perspective view of the rear part of the reflecting panel, which is equipped with the low-band element and the mid-band element. [Figure 10A] This is a front perspective view showing the low-band phase shifter and mid-band phase shifter provided on the reflecting panel. [Figure 10B] This is a rear perspective view showing the low-band phase shifter and mid-band phase shifter provided on the reflecting panel. [Figure 11A] Figure 10A shows exploded perspective views and their respective enlarged sections. [Figure 11B] Figure 10B shows exploded perspective views and their respective enlarged sections. [Figure 12A] This is a front view of Figure 10A. [Figure 12B] This is a rear view of Figure 10B. [Figure 13] A cross-sectional perspective view and a partially enlarged view of the phase adjustment dielectric panel, which is part of the configuration of a phase shifter in an antenna device according to one embodiment of the present invention. [Figure 14] This is a partially enlarged perspective view illustrating the operation of a phase shifter in an antenna device according to one embodiment of the present invention. [Figure 15] This is a cross-sectional view along line BB in Figure 14. [Figure 16] This is a schematic diagram illustrating the function of the phase adjustment dielectric panel in the configuration of a phase shifter in an antenna device according to one embodiment of the present invention. [Figure 17A] This is an exploded perspective view showing the coupling of the low-band element to the reflecting panel and transmission line. [Figure 17B] This is an exploded perspective view showing the coupling of the low-band element to the reflecting panel and transmission line. [Figure 18A] This is an exploded perspective view showing the coupling of the midband element to the reflecting panel and transmission line. [Figure 18B] This is an exploded perspective view showing the coupling of the midband element to the reflecting panel and transmission line. [Figure 19] These are front and rear perspective views showing the coupling of radiating elements in an antenna device according to one embodiment of the present invention. [Figure 20A] Figure 19 is a front section exploded perspective view. [Figure 20B] Figure 19 is a rear section exploded perspective view. [Figure 21] This is a cross-sectional view showing the arrangement of radiating elements on a reflecting panel in various realization examples of the configuration of an antenna device according to one embodiment of the present invention. [Figure 22] This is a perspective view showing the low-band element in the configuration of an antenna device according to one embodiment of the present invention. [Figure 23] Figure 22 shows the front view and rear view. [Figure 24] This is a side view of Figure 22. [Figure 25A] This is a front perspective view showing another example of a low-band element in the configuration of an antenna device according to one embodiment of the present invention. [Figure 25B] This is a rear perspective view showing another example of the low-band element configuration in an antenna device according to one embodiment of the present invention. [Figure 26] This is an unfolded view of Figure 25A or Figure 25B. [Figure 27A] This is a front view of Figure 25A. [Figure 27B] This is a side view of Figure 25A. [Figure 27C] This is a rear view of Figure 25A. [Figure 28A] This is a front exploded perspective view showing the configuration of Figure 25A with the first and second feed lines separated. [Figure 28B] This is an exploded perspective view of the rear view, showing the configuration of Figure 25A with the first and second feed lines separated. [Figure 29] Figure 25A shows a perspective view and a partial enlargement view illustrating the improved PIMD structure, which includes the feeder separation section, shape-retaining member, and shape-retaining connector. [Figure 30] This is a perspective view showing the mid-band element in the configuration of an antenna device according to one embodiment of the present invention. [Figure 31] Figure 30 is an exploded perspective view. [Figure 32] Figure 30 shows the front view and rear view. [Figure 33] This is a side view of Figure 30. [Figure 34] This is another example of realizing a mid-band element in the configuration of an antenna device according to one embodiment of the present invention. [Figure 35] Figure 34 is an exploded perspective view. [Figure 36] This is a partial front view (a) of the first transmission line and a graph (b) showing an ideal phase difference diagram, illustrating how the phase difference is achieved by adjusting the position and depth of the impedance matching step of the phase dielectric in the configuration of a phase shifter of an antenna device according to one embodiment of the present invention. [Modes for carrying out the invention]

[0042] Hereinafter, an antenna radiating element according to one embodiment of the present invention will be described in detail with reference to the attached drawings.

[0043] When assigning reference numerals to the components in each drawing, it should be noted that, as far as possible, identical components should have the same reference numeral even if they are shown in other drawings. Furthermore, when describing embodiments of the present invention, if it is determined that a specific description of such known configurations or functions would hinder understanding of the embodiments of the present invention, such detailed description will be omitted.

[0044] In describing the components of the embodiments of the present invention, terms such as First, Second, A, B, (a), (b), etc., may be used. Such terms are merely for distinguishing a component from other components, and do not limit the nature, order, or procedure of that component. Furthermore, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the art to which the present invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art, and not in an ideal or overly formal sense unless explicitly defined in this application.

[0045] Figure 1 is a perspective view showing the external appearance of an antenna device equipped with a phase shifter according to one embodiment of the present invention; Figures 2A and 2B are exploded perspective views of the front and rear sides of the configuration in Figure 1, with the antenna housing separated; Figure 3 is a perspective view showing the external appearance of the configuration in Figure 1(a) with the radome panel removed; and Figure 4 is a perspective view showing the external appearance of the configuration in Figure 1(b) with the rear panel removed.

[0046] An antenna device 1 to which an antenna radiating element according to one embodiment of the present invention is applied includes an antenna housing portion 5 having an internal space (not shown in the drawing reference numerals) and an antenna board assembly 100 arranged vertically in the internal space of the antenna housing portion 5.

[0047] As shown in Figures 1, 2A, and 2B, the antenna housing section 5 includes a rear panel 10 that performs a skeletal function, side panels 20 provided by a left body panel 21 and a right body panel 22 which are coupled to the left and right ends of the rear panel 10 to form a thickness in the front-rear direction, a radome panel 30 which is coupled to the front end of the side panels 20 to shield the internal space, and a cap panel 40 provided by an upper cap panel 41 which is coupled to cover the upper open portion and a lower cap panel 42 which is coupled to cover the lower open portion.

[0048] The rear panel 10 forms the external appearance of the rear of the antenna housing 5 and may be provided in the form of a thin panel. Here, the rear panel 10 may be made of aluminum, but is not necessarily limited to this, and does not exclude non-metallic materials such as plastic resin.

[0049] A reinforcing frame 50 is provided on the front side (i.e., the side facing the interior space) of the rear panel 10, thereby reinforcing the rigidity of the thin, panel-like rear panel 10.

[0050] The reinforcing frame 50 may include a plurality of left and right reinforcing bars 51-54 that are horizontally connected to the front of the rear panel 10 and connected vertically at a predetermined distance apart, and a center reinforcing bar 55 that is vertically connected and connects the intermediate portions of the plurality of left and right reinforcing bars 51-54.

[0051] On the other hand, the rear ends of the left body panel 21 and the right body panel 22 are connected to the left and right ends of the rear panel 10 to form the side portion of the antenna housing 5, and the front ends of the left body panel 21 and the right body panel 22 can be connected to the radome panel 30 using a plurality of connecting clips 25 provided for connection to the radome panel 30. The left and right ends of the radome panel 30 may each be bent backward with a predetermined curvature and formed at corresponding positions in the clip grooves 35 to allow for the locking and connection of the plurality of connecting clips 25.

[0052] Left-side sealer 23 and right-side sealer 24 are interposed between the left-side body panel 21 and the left end of the radome panel 30, and between the right-side body panel 22 and the right end of the radome panel 30, respectively, to prevent rainwater (such as rain) from entering the interior space from the outside.

[0053] However, although not shown in the diagram, it goes without saying that the same components as those described above for the left-side sealer and right-side sealer can also be interposed between the left-side body panel 21 and the left-side end of the rear panel 10, and between the right-side body panel 22 and the right-side end of the rear panel 10, respectively.

[0054] The left-side sealer 23 and the right-side sealer 24 may be made of a rubber material that deforms in shape due to the bonding force provided when the radome panel 30 is joined and the bonding force provided when the side panel 20 is joined to the rear panel 10, thereby sealing the gap between them.

[0055] On the other hand, the upper cap panel 41 of the cap panel 40 can be more firmly connected to the upper ends of the rear panel 10, left body panel 21, right body panel 22, and radome panel 30 via a pair of connecting mediating blocks 45 that mediate the connection to the upper end of the reflecting panel 110, which is part of the antenna board assembly 100 described later.

[0056] In addition, the lower cap panel 42 of the cap panel 40 may have multiple through-holes or connection terminals (not shown) for connecting an external power supply cable (not shown). The lower cap panel 42 can also be simultaneously connected to the lower end of the rear panel 10, the left body panel 21, the right body panel 22, and the radome panel 30.

[0057] The radome panel 30 protects the internal configuration of the antenna board assembly 100 located in its internal space from the outside, and may also be made of a radio wave-transparent material that allows for smooth radiation from the radiating elements 120 and 130 provided by the low-band element 120 and mid-band element 130, which will be described later.

[0058] On the other hand, as shown in Figures 3 and 4, the antenna board assembly 100 can be placed in the internal space of the antenna housing 5.

[0059] More specifically, in the internal space of the antenna housing 5, as shown in Figures 3 and 4, a plurality of radiating elements 120 and 130 may be arranged in front of the reflecting panel 110 so as to form a plurality of matrices in the vertical and horizontal directions, and a transmission line 300 in the form of an air strip line for supplying power to a radiating element (for example, a mid-band element 130 in this embodiment) associated with any one of the frequency bands of the plurality of radiating elements 120 and 130 may be arranged behind the reflecting panel 110.

[0060] For reference, in one embodiment of the present invention, a structure is employed in which a plurality of radiating elements 120, 130 are arranged in 6 columns vertically and 2 rows horizontally, with mid-band elements 130 placed between each of the low-band elements 120 described later in the vertical column direction, and a single mid-band element 130 placed at the center of each low-band element 120.

[0061] On the other hand, either the rear panel 10 or the side panel 20 is provided with a lower clamp portion (not shown) and an upper clamp portion (not shown) that mediate connection to a support pole P erected upright on the bottom surface of the installation space, allowing the upper end of the antenna housing portion 5 to be tilted by a predetermined angle in the front-rear direction relative to its lower end to adjust the beam radiation direction.

[0062] Figure 5 is a perspective view showing an antenna board assembly equipped with a phase shifter according to one embodiment of the present invention; Figure 6 is an exploded perspective view showing the low-band element and mid-band element separated from the configuration of Figure 5; and Figure 7 is an exploded perspective view showing only the low-band element separated from the configuration of Figure 5.

[0063] In an antenna device 1 to which an antenna radiating element according to one embodiment of the present invention is applied, the antenna board assembly 100 may include radiating elements 120 and 130 arranged in front of the reflecting panel 110, as shown in Figures 5 to 7. Here, the reflecting panel 110 may be made of a material that plays the role of reflecting the frequency beam radiated from the front radiating elements 120 and 130 forward.

[0064] The radiating elements 120 and 130 are communication components that, when powered by the low-band transmission line 200 and the mid-band transmission line 300 described later, radiate a beam in a predetermined frequency band.

[0065] Here, the predetermined frequency band can be limited to a single defined frequency band, but in one embodiment of the present invention, the explanation will be limited to the application of a first frequency band, which is a relatively low frequency band, and a second frequency band, which is a relatively high frequency band.

[0066] Therefore, the radiating elements 120 and 130 may include a low-band element 120 capable of radiating a beam in the first frequency band and a mid-band element 130 capable of radiating a beam in the second frequency band.

[0067] In this manner, when the radiating elements 120 and 130 are arranged to emit beams in different frequency bands, it is preferable to position them so that the mutually radiated beams do not interfere with each other.

[0068] However, maintaining a horizontal distance of at least half the frequency ratio between adjacent radiating elements 120 and 130 is most preferable in terms of ensuring isolation. Avoiding interference between them by separating all radiating elements 120 and 130 for each frequency band presents the problem of potentially increasing the overall size of the product.

[0069] Therefore, in the case of antenna device 1 to which an antenna radiating element according to one embodiment of the present invention is applied, a relatively small mid-band element 130 is placed in the area that overlaps the relatively large low-band element 120 in the front-to-back direction, thereby preventing an increase in the overall size of the product while enabling smooth radiation of pattern beams in each frequency band.

[0070] More specifically, as shown in Figure 3 (including Figure 14 described later), low-band elements 120 can be arranged on the front surface of the reflecting panel 110 at predetermined distances apart in the vertical direction, and mid-band elements 130 can be alternately arranged in area P1 where there is no beam interference with the low-band elements 120 and in area P2 where there is beam interference. Hereinafter, the mid-band elements 130 arranged in area P1 where there is no beam interference will be referred to as outer mid-band elements 130O, and the mid-band elements 130 arranged in area P2 where there is beam interference will be referred to as inner mid-band elements 130I.

[0071] The inner midband elements 130I located in the beam interference region P2 may be provided so as to be exposed forward through element mounting holes 121 formed in the center of each lowband element 120.

[0072] As shown in Figures 5 to 7, a total of six low-band elements 120 (120-1a to 1c, 120-2a to 2c) are arranged at predetermined distances apart in the vertical direction (Vertical direction, hereinafter referred to as "V-direction") to construct at least one RF channel.

[0073] Here, the midband elements 130 can be arranged in the V-direction in a total of 12 units, with an inner midband element 130I provided in the element mounting hole 121 of each lowband element 120, and one outer midband element 130O provided in each beam interference-free area P1 located outside each lowband element 120.

[0074] Two such low-band elements 120 and mid-band elements 130 can be arranged in the left-right horizontal direction (horizontal direction, hereinafter referred to as the "H-direction").

[0075] The low-band element 120 and the mid-band element 130 are powered via independently arranged transmission lines 200 and 300, respectively, allowing them to radiate beams corresponding to their respective frequency bands. Each element 120 and 130, positioned in the V-direction, radiates a beam while maintaining its own unique phase value, thereby forming a specific pattern beam (beamforming).

[0076] The transmission lines 200 and 300 can be concentrated on either the front or back surface of the reflecting panel 110. However, in the case of an antenna device 1 to which an antenna radiating element according to one embodiment of the present invention is applied, the phase shifters 400A and 400B described later are separately provided as a low-band phase shifter 400A and a mid-band phase shifter 400B to independently phase-shift the radiating beams of the low-band element 120 and the mid-band element 130 of two frequency bands. To minimize operational interference between the phase shifters 400A and 400B, the transmission line 200 associated with the low-band element 120 is arranged on the front surface of the reflecting panel 110, and the transmission line 300 associated with the mid-band element 130 is arranged on the back surface of the reflecting panel 110.

[0077] Hereinafter, among the transmission lines 200 and 300, the one located in front of the reflecting panel 110 and responsible for supplying power to the low-band element 120 will be referred to as the "low-band transmission line" and designated as "200" in the drawings, while the transmission line 200 and 300 located in rear of the reflecting panel 110 and responsible for supplying power to the mid-band element 130 will be referred to as the "mid-band transmission line" and designated as "300" in the drawings.

[0078] Figure 8 is an exploded perspective view showing the overlapping placement of the low-band element and the mid-band element in the configuration of Figure 5; Figures 9A and 9B are exploded perspective views showing the front and rear parts of the reflecting panel on which the low-band element and the mid-band element are provided in the configuration of Figure 5; Figures 10A and 10B are front and rear perspective views showing the low-band phase shifter and the mid-band phase shifter provided on the reflecting panel; Figures 11A and 11B are exploded perspective views of Figures 10A and 10B and their respective enlarged sections; and Figures 12A and 12B are front and rear views of Figures 10A and 10B, respectively.

[0079] The low-band element 120 and the mid-band element 130 may be dual-polarization elements configured to generate at least one polarization beam of a dual-polarization beam when power is supplied at two locations via different transmission lines.

[0080] Here, as shown in Figures 3 to 12B, the low-band transmission line 200 and the mid-band transmission line 300 can be configured such that power is supplied to two locations for each of the low-band elements 120 and mid-band elements 130, which are arranged in the V-direction, with two input transmission lines 210L, 210R, 310L, and 310R arranged on the front and back of the reflecting panel 110, respectively.

[0081] First, looking at the low-band transmission line 200, the left input line 210L and the right input line 210R can be extended in a straight line to the left and right sides of the low-band element 120, respectively, via the down-cap panel 42.

[0082] At this time, the upper ends of the left input line 210L and the right input line 210R are positioned in the middle of the low-band elements 120 arranged in the V-direction, and from their upper ends (first branching point S1), they can branch out into the upper transmission line 220U and the lower transmission line 220D, respectively.

[0083] At the respective ends of the upper transmission line 220U and the lower transmission line 220D (second branching point S2 and third branching point S3), they can branch out toward the three low-band elements 120-1a to 120-1c located relatively above and the three low-band elements 120-2a to 120-2c located relatively below, forming branch lines that are three branch transmission lines 230-1 to 230-3.

[0084] In the following explanation, each end of the three branch transmission lines 230-1 to 230-3 is defined as a power supply terminal for connecting one side and the other side of the low-band element 120, and is referred to as "output terminals 205L and 205R".

[0085] When a low-band element 120 is mounted on each output terminal 205L, 205R, power can be supplied by connecting to a feed pattern processed on the outer or inner surface of the low-band element 120.

[0086] On the other hand, the mid-band transmission line 300 differs from the low-band transmission line 200 in that it is located on the back of the reflecting panel 110 and that it branches into two more lines at the ends of the three branch transmission lines 330-1 to 330-3.

[0087] More specifically, the midband transmission line 300 can be extended in a straight line via the down cap panel 42 to the left input line 310L and the right input line 310R, respectively, to the left and right portions of the midband element 130.

[0088] Here too, the upper ends of the left input line 310L and the right input line 310R are positioned in the middle of the midband elements 130 arranged in the V-direction, and from their upper ends (first branching point S1), they can branch out into the upper transmission line 320U and the lower transmission line 320D, respectively.

[0089] At the respective ends of the upper transmission line 320U and the lower transmission line 320D (second branching point S2 and third branching point S3), the lines can branch out toward the six mid-band elements 130 located relatively above and the six mid-band elements 130 located relatively below, forming three branched transmission lines 330-1 to 330-3.

[0090] At the end of each of the three branch transmission lines 330-1 to 330-3, as a difference from the low-band transmission line 200 described above, the lines are branched and extended to form two branch lines, and their ends can function as the output terminals 305L and 305R described above.

[0091] Such transmission lines 200 and 300 may be provided in the form of air strip lines, positioned at a predetermined distance from the front and back of the reflecting panel 110 via separation supporters 500 (see Figures 14 and 15, described later).

[0092] While it is preferable to print the feed lines for the radiating elements 120 and 130 onto the surface of a typical printed circuit board (PCB), printed circuit boards have the problem of significant signal loss due to the dielectric constant of the FR-4 material itself. To solve such losses, an air strip transmission line structure is advantageous, but when attempting to implement a phase shifter with an air strip transmission line structure, it must be used in combination with structures such as multiple cables and PCBs, resulting in reduced aesthetics and increased weight. In such structures, impedance matching elements are additionally applied, and the increase in discontinuous sections makes it difficult to improve losses.

[0093] Therefore, the antenna device 1 according to one embodiment of the present invention employs an air strip type transmission line structure to prevent signal loss due to the dielectric constant of the printed circuit board material, while also employing phase shifters 400A and 400B that transition the phase value by changing the dielectric constant of the dielectric material in order to prevent a decrease in aesthetics and an increase in weight.

[0094] In particular, an antenna device 1 according to one embodiment of the present invention proposes a technical feature in which the transmission lines 200 and 300 are manufactured in the shape of general conductive strips and arranged at a predetermined distance from the front and back of the reflecting panel 110 using a separation supporter 500, and a dielectric panel 450 for phase adjustment, which is the core component of the phase shifters 400A and 400B, can be inserted and positioned in the separation space between them.

[0095] To explain this in more detail, the phase shifters 400A and 400B of the antenna device 1 according to one embodiment of the present invention may include, as shown in Figures 8 to 12B, a low-band phase shifter 400A that operates forward with respect to the reflecting panel 110 to shift the phase value of the radiated beam of the low-band element 120, and a mid-band phase shifter 400B that operates backward with respect to the reflecting panel 110 to shift the phase value of the radiated beam of the mid-band element 130.

[0096] In the following explanation, the first frequency band described above is defined as the Low Band band, which radiates frequencies defined as operating frequencies between 600 MHz and 800 MHz to form a low-frequency low beam (beamforming), and the second frequency band is defined as the Mid Band band, which radiates frequencies defined as operating frequencies between 1.7 GHz and 2.4 GHz to form a mid-frequency mid-beam pattern (beamforming).

[0097] In addition, a low-band transmission line 200 provided for supplying power to the low-band element 120 can be defined as a first transmission line, and a mid-band transmission line 300 provided for supplying power to the mid-band element 130 can be defined as a second transmission line.

[0098] First, the low-band phase shifter 400A of the antenna device 1 according to one embodiment of the present invention will be specifically described as follows. The mid-band phase shifter 400B differs from the low-band phase shifter 400A only in the position of the drive motor 410, as will be explained later. The rest of the configuration and the theoretical principles that constitute it are all the same, so a detailed explanation will be omitted to the extent that it is redundant, and the differences will be the focus of the explanation from here on.

[0099] The low-band phase shifter 400A, as shown in Figures 8 to 12B, may include a drive motor 410 that is electrically driven to generate rotational force, a plurality of vertical moving bars 430C, 430L, and 430R that receive the rotational force generated by the drive motor 410 and move vertically (V-direction) on the front of the reflecting panel 110, and a plurality of moving clamps 440 that are coupled to multiple points on the plurality of vertical moving bars 430C, 430L, and 430R and move vertically in conjunction with each other.

[0100] Here, the drive motor 410 of the low-band phase shifter 400A is provided in a gearbox configuration on the lower rear side of the reflecting panel 110, the rotation shaft of the drive motor 410 is positioned in the front-rear direction and is exposed to the front by penetrating the reflecting panel 110, and a pinion gear having pinion gear teeth 411 formed on its outer circumference can be connected to the rotation shaft of the drive motor 410 so as to rotate on the shaft.

[0101] In addition, the multiple vertical moving bars 430C, 430L, and 430R may consist of three bars: a center moving bar 430C which is vertically elongated and positioned in the center of the front of the reflecting panel 110; a left moving bar 430L which is positioned parallel to and spaced apart from the center moving bar 430C on the left side of the front of the reflecting panel 110; and a right moving bar 430R which is positioned parallel to and spaced apart from the center moving bar 430C on the right side of the front of the reflecting panel 110.

[0102] Here, the three vertical moving bars 430C, 430L, and 430R are connected via a connecting bar 425 that connects their lower ends horizontally. A rack gear 420, which has rack gear teeth 421 that mesh with the pinion gear teeth 411 of the aforementioned pinion gear, can be connected to the connecting bar 425 in an extended vertical direction.

[0103] When the drive motor 410 is electrically driven and generates rotational force, the pinion gear rotates, and the rack gear 420 is moved vertically (V-direction) by the rack gear teeth 421 that mesh with the pinion gear teeth 411. At this time, the three vertical moving bars 430C, 430L, and 430R, which are fixed by the connecting bar 425, move in conjunction in the V-direction, allowing multiple moving clamps 440 to move in conjunction.

[0104] On the other hand, the low-band phase shifter 400A may further include, as shown in Figures 8 to 12, a phase adjustment dielectric panel (450, hereinafter abbreviated as "phase dielectric") that is movablely arranged at branching points S1, S2, and S3 of the first transmission line 200, which are spaced apart from the front surface of the reflecting panel 110, and an impedance matching dielectric panel (460, hereinafter abbreviated as "impedance dielectric") that is fixedly arranged alongside one side of the phase dielectric 450.

[0105] Here, the phase dielectric 450, while being moved in the V-direction by the moving clamp 440 described above, plays a role in transitioning the phase value of the low-band element 120 by changing the dielectric constant at branching points S1, S2, and S3 on the first transmission line 200.

[0106] As shown in Figures 11A and 11B, the moving clamp 440 may include a clamp body 441 fixed to the vertical moving bars 430 via a bridge bar 443 extending perpendicularly from the vertical moving bars (430C, 430L, 430R, hereinafter referred to as "430"), a coupling dielectric 444 coupled to the back of the clamp body 441 to mediate the coupling of the phase dielectric 450 to the clamp body 441 across the transmission line 200, and an elastic part 445 provided on the clamp body 441 to elastically support the transmission line 200 towards the phase dielectric 450.

[0107] Here, the multiple vertical moving bars 430 can be guided to move up and down by multiple support roller sections 470 that are spaced a predetermined distance apart in the V-direction. The specific configuration of the support roller sections 470 will be described in more detail later.

[0108] The coupling dielectric 444 is configured to move in conjunction with the clamp body 441 in front of the transmission line 200, and is made of a dielectric material. It may be a component designed to not affect the dielectric constant of the phase dielectric 450, except for the change in dielectric constant of the phase dielectric 450 that moves between the transmission line 200 and the front of the reflecting panel 110.

[0109] On the other hand, the elastic portion 445 can elastically adhere the coupling dielectric 444 to the transmission line 200 side, thereby ensuring that the transmission line 200 and the phase dielectric 450 are in contact with a uniform adhesion force and move together.

[0110] In the following description, the mid-band phase shifter 400B of the antenna device 1 according to one embodiment of the present invention will be described only in terms of the differences between it and the low-band phase shifter 400A already described. The remaining components not described can be considered identical to those of the low-band phase shifter 400A.

[0111] As shown in Figures 8 to 12B, the midband phase shifter 400B can transition the phase value by changing the dielectric constant generated while moving the phase dielectrics 450, which are positioned at branching points S1, S2, and S3 of the second transmission line 300, which are spaced apart from the back surface of the reflecting panel 110.

[0112] Here, unlike the low-band phase shifter 400A which is equipped with a center moving bar 430C, the mid-band phase shifter 400B may be equipped with only a left moving bar 430L and a right moving bar 430R.

[0113] Furthermore, in the case of the low-band phase shifter 400A, the bridge bar 443 is formed as an extension in the left-right direction only on the center moving bar 430C, and each bridge bar 443 is equipped with two clamp bodies 441, while the left moving bar 430L and the right moving bar 430R are equipped with one clamp body 441 per bridge bar 443. However, in the case of the mid-band phase shifter 400B, there is a difference in that bridge bars 443 extend in the left-right direction from each moving bar 430L and 430R, and each bridge bar 443 is equipped with two clamp bodies 441.

[0114] Figure 13 is a cross-sectional perspective view and a partially enlarged view showing the phase adjustment dielectric panel in the configuration of a phase shifter in an antenna device according to one embodiment of the present invention; Figure 14 is a partially enlarged perspective view to explain the operation of the phase shifter in an antenna device according to one embodiment of the present invention; Figure 15 is a cross-sectional view along line BB in Figure 14; and Figure 16 is a schematic diagram to explain the function of the phase adjustment dielectric panel in the configuration of a phase shifter in an antenna device according to one embodiment of the present invention.

[0115] Since the phase shifters 400A and 400B transition their phase values ​​due to the change in the dielectric constant of the phase dielectric being moved in the V-direction, the multiple vertical moving bars 430, which are provided to directly move these phase shifters, must move stably without flowing during vertical linear movement.

[0116] For this purpose, as shown in Figure 14, a plurality of support roller sections 470 may be provided to provide rolling support to the upper and lower surfaces of the vertical moving bar 430.

[0117] The multiple support roller sections 470 may include a pair of roller coupling ends 471 that project forward or backward from the left and right sides of the vertical moving bar 430, respectively, and a first roller 472 rotatably mounted on each of the pair of roller coupling ends 471 to rotatably support one side of the vertical moving bar 430, and a second roller 473 to rotatably support the other side of the vertical moving bar 430.

[0118] With these multiple support roller sections 470, the vertical moving bar 430 can move stably up and down while minimizing moving resistance at a predetermined distance from the front and back of the reflecting panel 110.

[0119] On the other hand, the first transmission line 200 and the second transmission line 300 may be provided in the form of air strip lines separated by a predetermined distance D1 from the front or back of the reflecting panel 110 by a plurality of separation supporters 500, as shown in Figure 15.

[0120] The separation supporter 500 may include a panel hook portion 510 that is inserted and fixed into a hook hole (not shown in the drawing reference numerals) formed in the reflecting panel 110, and a line mounting portion 520 provided on the opposite side of the panel hook portion 510, on which the first transmission line 200 and the second transmission line 300 are placed.

[0121] The panel hook portion 510 has panel hook ends 515 formed at each tip that penetrate the hook hole and are then hooked, and the line mounting portion 520 may also have line hook ends 525 formed at one end and the other end of the mounted first transmission line 200 and second transmission line 300 that are hooked.

[0122] On the other hand, the phase shifters 400A and 400B of the antenna device 1 according to one embodiment of the present invention can operate on the principle of transitioning the phase value at each branching point S1, S2, and S3 of the first transmission line 200 and the second transmission line 300 by changing the dielectric constant due to the movement of the phase dielectric 450.

[0123] However, in order to more accurately realize the phase value transition due to the change in dielectric constant, an impedance dielectric 460 must be fixedly placed in a part of the branching points S1, S2, and S3 of the input lines 310L, 310R, or the transmission lines 320U, 320D before branching, which correspond to one side of the phase dielectric 450.

[0124] In this case, the phase dielectric 450 is preferably placed between any one surface of the reflecting panel 110 and the transmission lines 200, 300, which are in the form of air strip lines spaced apart from any one surface of the reflecting panel 110. However, it is not necessary for it to be provided along the entire length of the line. The transmission lines 200, 300 here may be formed along branching points S1, S2, S3, which branch into multiple branching lines 220U, 220D, 320U, 320D so as to supply power from the input lines 210L, 210R, 310L, 310R to multiple radiating elements 120, 130.

[0125] Here, the phase dielectric 450 may have a stepped impedance matching step 455 formed on the surface facing the reflecting panel 110, as shown in Figure 16(c).

[0126] Furthermore, the impedance dielectric 460 may be arranged longitudinally between the input lines 210L, 210R, 310L, 310R corresponding to S1 of the branching points S1, S2, S3 and any one surface of the reflecting panel 110, or between the upper transmission lines 220U, 320U and lower transmission lines 220D, 320D corresponding to S2 and S3 of the branching points S1, S2, S3 and any one surface of the reflecting panel 110. In this case, it is preferable that the impedance matching step 455 is formed within the longitudinal range of the impedance dielectric 460.

[0127] The impedance matching step 455 formed in such a phase dielectric 450 minimizes the change in the width size of the first transmission line 200 or the second transmission line 300, which must be changed for impedance matching, by forming a dielectric layer of a predetermined thickness, such as an air layer 455A, between it and either one surface of the reflecting panel 110.

[0128] For example, as shown in Figure 16(a), if only a phase dielectric 450 is provided and no impedance dielectric 460 is provided, the change in width size of the input lines 210L, 210R or the upper transmission line 220U and lower transmission line 220D, which correspond to the lines before branching at branching points S1, S2, and S3 of the first transmission line 200, is very large at "X1" in order to achieve an effective phase value transition, so interference with one of the branch lines is a concern.

[0129] Furthermore, as shown in Figure 16(b), even when an impedance dielectric 460 is provided along with the phase dielectric 450, and an impedance matching step 455 is not formed in the phase dielectric 450, there is a problem in that the variation range of the width size of the first transmission line 200 or the second transmission line 300 is "X2", which is larger than in the case of X1.

[0130] In this case, as shown in Figure 16(c), forming an impedance matching step 455 in the phase dielectric 450 minimizes the width variation of the first transmission line 200 or the second transmission line 300 to "X3". This not only allows for the formation of a simple overall appearance for the transmission lines 200 and 300, but also provides the advantage of enabling effective phase value transitions.

[0131] Figures 17A and 17B are exploded perspective views showing the coupling of low-band elements to the reflecting panel and transmission line; Figures 18A and 18B are exploded perspective views showing the coupling of mid-band elements to the reflecting panel and transmission line; Figure 19 is a front and rear perspective view showing the coupling of radiating elements in the configuration of an antenna device according to one embodiment of the present invention; Figures 20A and 20B are exploded perspective views of the front and rear sections of Figure 19; Figure 21 is a cross-sectional view showing the arrangement of radiating elements to the reflecting panel in various realization examples of the configuration of an antenna device according to one embodiment of the present invention; Figure 22 is a perspective view showing the low-band elements in the configuration of an antenna device according to one embodiment of the present invention; Figure 23 is a front view and rear view of Figure 22; and Figure 24 is a side view of Figure 22.

[0132] As shown in Figures 17A to 24, the low-band element 120 and the mid-band element 130 can be fixed to the front surface of the reflecting panel 110, respectively.

[0133] Here, among the multiple midband elements 130, the inner midband element 130I, which is affected in the radial direction due to its relationship with the lowband element 120, can be positioned to penetrate the middle of the lowband element 120. To allow the inner midband element 130I to penetrate the lowband element 120, the aforementioned element mounting hole 121, which penetrates in the front-to-back direction, may be formed in the middle of the lowband element 120.

[0134] Multiple low-band elements 120 and multiple mid-band elements 130 are each fixed to the front of the reflecting panel 110 and can be independently powered by a first transmission line 200 located on the front of the reflecting panel 110 and a second transmission line 300 located on the back of the reflecting panel 110.

[0135] For this purpose, the reflecting panel 110 may have front-to-back through holes 117 that penetrate in the front-to-back direction so as to be connected to at least the second transmission line 300, and the base panel 138 of the midband element 130, which will be described later, may be fixed via the front-to-back through holes 117.

[0136] Here, the multiple low-band elements 120 may include a low-band element body 122 formed of a non-conductive material, through which a mid-band element (130, particularly an inner mid-band element 130I) is inserted, as shown in Figures 22 to 24, and through which the element mounting holes 121 described above are formed.

[0137] The low-band element body 122 may be formed in the shape of a regular square pyramid, as shown in Figures 22 to 24, with its front end having a roughly square vertical cross-section and its vertical cross-sectional area gradually decreasing towards the rear element through-hole 121.

[0138] However, the low-band element body 122 does not necessarily have to have a perfect vertex like a regular square pyramid in order to ensure stable coupling to the front surface of the reflecting panel 110 and to form the element mounting holes 121 described above. Since the rear corners (4 of them) are formed in a planar shape for the formation of the dipole pattern 126 described later, the rear end of the low-band element body 122 and the element mounting holes 121 may be formed in a regular hexagon (or hexagonal) shape.

[0139] Here, the multiple low-band element bodies 122 are molded from a lightweight, non-conductive plastic material, which significantly reduces the overall weight of the antenna board assembly 100 compared to existing designs.

[0140] On the other hand, the rear end of the low-band element body 122 in which the element through-hole 121 is formed may be formed flat so that its peripheral edge is in contact with the front surface of the reflecting panel 110. The corner ends connecting the portion in which the element through-hole 121 is formed to each vertex of the square vertical cross-section of the low-band element body 122 may be formed by cutting and cutting in a flat, chamfered shape so that a part of the dipole pattern 126, described later, is pattern-printed, and thus provided as non-corner surfaces. Hereinafter, the corner portions of the low-band element body 122 in which the dipole pattern 126 is formed will be distinguished and referred to as "corner surfaces".

[0141] In addition, the element through-hole 121 may be formed to a size that allows an inner mid-band element 130I, which is arranged superimposed on the low-band element 120 in the beam interference region P2 of the mid-band element 130, to pass through it.

[0142] Here, it is preferable that the element through-hole 121 is formed to a size that allows the base panel 138 and balloon portion 133, which are part of the configuration of the midband element 130 excluding the radiating panel 131, to pass through in the front-to-back direction.

[0143] On the other hand, a dipole pattern 126 made of a conductive material that radiates at least one polarization beam of the dual polarization may be plated onto the corner face of the low-band element 120.

[0144] The dipole pattern 126 is formed around each corner of the low-band element 120, and when combined with other dipole antenna patterns connected in an "X" shape, it plays a role in radiating polarized beams of +45 degrees and -45 degrees.

[0145] Such a dipole pattern 126 may be plated to close the peripheral edge of the element mounting hole 121, as shown in Figures 22 to 24, and its tip may be plated to extend forward from the peripheral edge of the element mounting hole 121 along the corner of the front end of the low-band element body 122, which has a square front edge.

[0146] The dipole pattern 126 is a plated portion on the peripheral edge of the element mounting hole 121 and may include a ground portion 121G for grounding the mid-band element 130. The ground portion 121G is plated to completely close the peripheral edge of the element mounting hole 121 through which the mid-band element 130 is installed, thereby eliminating the need for an existing grounding panel or other configuration that serves as a separate ground, allowing for a design without additional structures and preventing an increase in weight.

[0147] On the other hand, the dipole pattern 126 may include a pair of dipole radiation ends 126a and 126b that are plated at the front end of the low-band element body 122 so as to branch in a "T" shape along adjacent sides of the vertical ends of the square, as shown in Figures 22 to 24.

[0148] Preferably, the pair of dipole radiating ends 126a and 126b have bent tips 126E-1 and 126E-2, and the distance between the tips 126E-1 and 126E-2 is formed to be half the wavelength (operating frequency = λ) of the frequency band, which is λ / 2.

[0149] In an antenna device 1 to which an antenna radiating element according to one embodiment of the present invention is applied, if the wavelength (λ) of the resonant frequency in the low-frequency band is taken into consideration, the size of the low-band element 120 can be increased. To prevent this, as shown in Figure 22, the tips 126E-1 and 126E-2 of a pair of dipole radiating ends 126a and 126b located on the bent surface 120C, which will be described later, are bent and extended. This has the advantage of minimizing the size of the low-band element 120 while achieving the length of the dipole antenna, which is λ / 2.

[0150] Furthermore, the bending of the ends 126E-1 and 126E-2 of the pair of dipole radiating ends 126a and 126b increases the capacitance (C) of the circuit. Considering that the resonant frequency is inversely proportional to the capacitance (C) of the circuit, the frequency bandwidth can be further reduced by increasing the capacitance (C).

[0151] This has the advantage that the low-band element 120 can smoothly radiate signals in the low-frequency band.

[0152] Here, the front end of the low-band element body 122, where the dipole radiation ends 126a and 126b are plated, may have a bent surface 120C that is bent relative to an inclined side surface (not indicated in the drawing reference numerals) that extends inclined relative to the front surface of the reflecting panel 110 on which the low-band element 120 and the mid-band element 130 are provided.

[0153] The bent surface 120C is provided, as shown in Figure 21, to reduce the area of ​​the square vertical cross-section compared to when the low-band element body 122 does not have the bent surface 120C. This is to secure an additional beam projection area (see reference numeral "L" in Figure 21) in front of the outer mid-band element 130O located in the beam-interference-free area P1. In other words, the bent surface 120C can be bent to the extent that it reduces the vertical cross-sectional area of ​​the square front end of the low-band element 120 in order to avoid beam interference of the mid-band element 130 positioned between adjacent low-band elements 120.

[0154] In particular, the bent surface 120C may be formed by bending perpendicular to the front surface of the reflecting panel 110.

[0155] On the other hand, the tips 126E-1 and 126E-2 of the dipole radiation ends 126a and 126b may be plated to be separated from the tips 126E-1 and 126E-2 of the adjacent dipole radiation ends 126a and 126b by predetermined separation lines 127-1 and 127-2, respectively, and be bent and extended in the direction of the element mounting hole 121 by a predetermined ratio to the area of ​​the vertical cross-section reduced by the bent surface 120C, and arranged side by side.

[0156] As shown in Figures 22 to 24, inner feed patterns 124a and 124b of a conductive material for supplying power to the dipole pattern 126 may be plated onto the inner surface of the low-band element body 122 of the low-band element 120.

[0157] One end of the inner feed patterns 124a and 124b is connected to the output terminal of the first transmission line 200, and the other ends of the inner feed patterns 124a and 124b are energized with the dipole pattern 126 via feed via holes 128a and 128b that penetrate the inside and outside of the low-band element body 122.

[0158] The inner feed patterns 124a and 124b can conduct electricity to the first transmission line 200 via transmission line connection holes 123a and 123b formed around the element through-hole 121 of the low-band element body 122.

[0159] Such dipole patterns 126 and inner feed patterns 124a and 124b may be formed by pattern plating on the low-band element body 122 using a PEP (Plastic Electro-Plating designs) process.

[0160] The PEP process, although not shown in the diagram, involves metallizing the entire injection-molded object made of thermoplastic resin, then applying an electric current (electroplating) to leave only the desired pattern, while the remaining portion is removed by a chemical reaction. The PEP process has the advantage of being more suitable for forming patterns on somewhat complex objects compared to general plating methods.

[0161] The low-band element 120, having this configuration, can be fixed to the front surface of the reflecting panel 110 by fixing screws 129S that are fastened through screw coupling bosses 129B formed at the peripheral edge of the element mounting hole 121 from the back surface of the reflecting panel 110.

[0162] Figures 25A and 25B are front and rear perspective views showing other realization examples of the low-band element in the configuration of an antenna device according to one embodiment of the present invention; Figure 26 is an exploded view of Figure 25A or Figure 25B; Figures 27A to 27C are the front, side, and rear views of Figure 25A; Figures 28A and 28B are exploded perspective views of the front and rear of the configuration of Figure 25A showing the first feed line and the second feed line separated; and Figure 29 is a perspective view and a partially enlarged view showing the improved PIMD structure of the configuration of Figure 25A using a feeder separation section, a shape-retaining member, and a shape-retaining connector.

[0163] The low-band element 120, as described with reference to Figures 19 to 24, is manufactured by first producing the low-band element body 122 using a mold into which a plastic resin molding material has been injected, and then using the PEP process to pattern print the dipole pattern 126 and inner feed patterns 124a and 124b.

[0164] However, when pattern printing a dipole pattern 126 and inner feed patterns 124a and 124b in the form of a conductive metal coating onto the surface of a plastic resin material by some method, there is a risk that PIMD (Patient-Induced Mass Deposition) may occur due to the bonding structure at the patterned areas, depending on the surface roughness of the molded plastic resin material.

[0165] Furthermore, while molded plastic resin products are hardened bodies that do not deform in shape, in general, antenna devices to which Massive MIMO technology is applied have the problem that they cannot accommodate the warping characteristics of the antenna board assembly or reflecting panel, as the radiating elements 120 and 130, which include multiple low-band elements, are formed to be relatively longer in the vertical direction than in the horizontal direction (approximately 2m) and are installed on the front of the antenna board assembly or reflecting panel. Therefore, although molding the hardened bodies of the radiating elements 120 and 130 can ensure their own rigidity, it may actually exacerbate the PIMD problem.

[0166] To address these problems, the radiating element according to one embodiment of the present invention proposes, in particular, another realization example of the low-band element 1120.

[0167] Hereinafter, the realization example of the low-band element 120 using a molded plastic resin material as its framework will be referred to as the "first realization example," and the realization example of the low-band element 1120 using a conductive sheet panel as its framework will be referred to as the "second realization example."

[0168] The first implementation example 120 and the second implementation example 1120 have the aforementioned differences in their manufacturing methods. Specifically, the first implementation example 120 is realized by a manufacturing method in which the low-band element body 122 that forms its framework is manufactured by an injection molding method among mold manufacturing methods, and then the inner feed patterns 124a, 124b and dipole patterns 126a, 126b are pattern printed by a PEP process or the like, whereas the second implementation example 1120 has the difference that it is manufactured by first manufacturing a conductive sheet panel of a predetermined thickness by a press mold method, and then separately fixing at least one or more dipoles (1126-Aa, 1126-Ab, 1126-Ba, 1126-Bb, hereinafter referred to as "1126" in drawings) and the first feed line 1124a and second feed line 1124b that supply power to them.

[0169] More specifically, a low-band element 1120 in another implementation of an antenna radiating element according to one embodiment of the present invention may include, as shown in Figures 18A and 18B, a base panel 1122 stacked parallel to the front surface of a reflecting panel 110, and at least one or more dipoles 1126 formed by bending and extending from the base panel 1122 in different directions, each radiating a different polarization beam.

[0170] Here, the base panel 1122 and at least one or more dipoles 1126 may be provided by conductive sheet panels having the same thickness.

[0171] The base panel 1122 serves as a fixing surface that comes into contact with the front surface of the reflecting panel 110 when it is fixed to the front surface, and the central part of the base panel 1122 can form an element mounting hole 1121 through which a part of the midband element 130, described later, is penetrated in the beam interference area P2.

[0172] At least one dipole 1126 may include dipole radiating ends 1126a, 1126b that are spaced apart and symmetrical with respect to the corner ends formed in the extended direction described above.

[0173] For example, in an antenna radiating element according to one embodiment of the present invention, the low-band element 1120 according to the second modification may have a base panel 1122 arranged in a square shape with approximately four vertices, and dipole radiating ends 1126a and 1126b may be formed so as to extend radially from each vertex, forming corners.

[0174] At this time, the dipole radiation ends 1126a and 1126b are formed symmetrically so as to have a predetermined separation distance from each other from the corner ends and can be separated by the separation slit 1125.

[0175] Furthermore, at least one dipole 1126 may be formed so as to occupy four corner portions that radiate forward from each vertex (i.e., four vertices) of the square-shaped base panel 1122, and may be extended into a parallelogram shape having four corners such that the area of ​​the vertical cross-section of the imaginary square connecting the vertices that are forward projection ends at the same distance increases as one moves forward.

[0176] On the other hand, at least one dipole 1126 may include a pair of first dipoles 1126-Aa, 1126-Ab, which are involved in one polarization beam of different polarization beams and occupy both corners in one of the four diagonal directions, as shown in Figures 25A and 25B, and a pair of second dipoles 1126-Ba, 1126-Bb, which are involved in another polarization beam of different polarization beams and occupy both corners in the other diagonal direction of the four corners.

[0177] Here, a pair of first dipoles 1126-Aa, 1126-Ab and a pair of second dipoles 1126-Ba, 1126-Bb may be separated by separation slits 1125 formed along the corner portions they occupy to form the dipole radiating ends 1126a, 1126b.

[0178] In this way, the low-band element 1120 of the second embodiment, which is provided with a base panel 1122 and at least one dipole 1126, can be detachably coupled to the base panel 1122 after at least one dipole 1126 has been manufactured separately.

[0179] However, the manufacturing method for the low-band element 1120 in the second realization example is not limited to the above-mentioned method of separately manufacturing the base panel 1122 and at least one or more dipoles 1126 and then joining them. As shown in Figure 19, a single conductive sheet panel can be pre-cut in an unfolded form using a press die, and then the integrated base panel 1122 and at least one or more dipoles 1126 can be formed by bending them apart so that they have mutually symmetrical dipole radiation ends 1126a and 1126b.

[0180] On the other hand, the low-band element 1120 according to the second realization example, as shown in Figures 25A to 27C, may include, for each pair of first dipoles 1126-Aa, 1126-Ab and pair of second dipoles 1126-Ba, 1126-Bb, a rear end radiation end 1126a-1, 1126b-1 extending parallel to the corner and parallel to the separation slit 1125, and 1126a-2, 1126b-2 extending from the front end of the rear end radiation end 1126a-1, 1126b-1 and extending to the vertices of adjacent corners.

[0181] Therefore, each corner portion of at least one dipole 1126 provided in each parallelogram shape is separated by a separation slit 1125, and the dipole radiation ends 1126a and 1126b branch off from the front end in a roughly "T" shape symmetrically with respect to the separation slit 1125. The radiation end positions before branching from the front end can be defined as the rear radiation ends 1126a-1 and 1126b-1, and the radiation end positions after branching from the front end can be defined as the front radiation ends 1126a-2 and 1126b-2.

[0182] Here, the low-band element 1120 according to the second implementation example may further include a first feed line 1124a and a second feed line 1124b that apply predetermined electrical signals for power supply to a pair of first dipoles 1126-Aa, 1126-Ab and a pair of second dipoles 1126-Ba, 1126-Bb, as shown in Figures 25A to 27C.

[0183] In the following explanation, the configuration that supplies power to a pair of first dipoles 1126-Aa and 1126-Ab is defined as the first feed line 1124a, and the configuration that supplies power to a pair of second dipoles 1126-Ba and 1126-Bb is defined as the second feed line 1124b.

[0184] Either the first feedline 1124a or the second feedline 1124b is fixed to either the front or back of the pair of first dipoles 1126-Aa, 1126-Ab and second dipoles 1126-Ba, 1126-Bb, and the other of the first feedline 1124a or the second feedline 1124b may be fixed to the other of the front or back of the pair of first dipoles 1126-Aa, 1126-Ab and second dipoles 1126-Ba, 1126-Bb.

[0185] In embodiments of the present invention, the first feedline 1124a is designed to be positioned on the front (i.e., inner) side of a pair of first dipoles 1126-Aa, 1126-Ab and second dipoles 1126-Ba, 1126-Bb, and the second feedline 1124b is designed to be positioned on the rear (i.e., outer) side of a pair of first dipoles 1126-Aa, 1126-Ab and second dipoles 1126-Ba, 1126-Bb.

[0186] The first feed line 1124a and the second feed line 1124b are connected to feed input terminals (not shown) provided on the front side of the reflecting panel 110, and can then be wired to branch out toward the dipole radiation ends 1126a and 1126b of the pair of first dipoles 1126-Aa, 1126-Ab and second dipoles 1126-Ba, 1126-Bb.

[0187] In this case, the first feed line 1124a and the second feed line 1124b may be connected to the feed input terminals on the same plane as the base panel 1122 via a feed mounting hole 1123 that is formed with the inner and outer sides communicating, and connected to the end of a separation slit 1125 that separates the base panel 1122 and the dipole 1126.

[0188] In the case of the low-band element 120 according to the first implementation example, the inner feed patterns 124a and 124b corresponding to the first feed line 1124a and the second feed line 1124b are formed by pattern printing on the inner surface of the low-band element body 122 using a PEP process. Furthermore, a portion of the inner feed patterns 124a and 124b are inevitably cross-wired in order to supply power to the dipole pattern 126 located in both diagonal directions. This presents a design complication in that a via-hole structure (not indicated by a drawing symbol) must be formed through the inner and outer surfaces of the low-band element body 122 to prevent mutual short circuits between the inner feed patterns 124a and 124b.

[0189] In the second implementation example, the low-band element 1120 can be arranged separately on the inner and outer surfaces of the dipole 1126, which forms the framework along with the function of the antenna element, in order to solve the design problems described above (i.e., so that there are no parts where the first feed line 1124a and the second feed line 1124b intersect). Therefore, the via hole structure described above becomes unnecessary, which has the advantage of preventing losses caused by its presence.

[0190] However, in the case of the low-band element 120 according to the first implementation example, the low-band element body 122 that forms the framework is made of a non-conductive plastic resin material, which has the advantage of easily printing the inner feed patterns 124a and 124b using the PEP process. On the other hand, it has the disadvantage that the PIMD problem mentioned above still remains.

[0191] In contrast, the low-band element 1120 in the second realization example, as shown in Figures 28A and 28B, is provided in the form of an air strip line supported at a predetermined distance from the front or back of a pair of first dipoles 1126-Aa, 1126-Ab and second dipoles 1126-Ba, 1126-Bb, in order to prevent mutual short circuits, since the skeletal dipole 1126 and the first feed line 1124a and second feed line 1124b are all made of conductive material.

[0192] For this purpose, the low-band element 1120 according to the second embodiment may further include at least one feeder separation section 1129C that separates the first feed line 1124a and the second feed line 1124b from the front or back of the pair of first dipoles 1126-Aa, 1126-Ab and second dipoles 1126-Ba, 1126-Bb.

[0193] The feeder separation section 1129C, as shown in Figure 29, may include a mounting body 1129C-1 fixed to the front or back of a pair of first dipoles 1126-Aa, 1126-Ab and second dipoles 1126-Ba, 1126-Bb, supporting the first feedline 1124a and the second feedline 1124b, and a fixing section 1129C-2 for fixing the first feedline 1124a and the second feedline 1124b mounted on the mounting body 1129C-1. The fixing section 1129C-2 may be connected to the mounting body 1129C-1 by a screw fixing method via fixing screws (not shown).

[0194] On the other hand, the first feed line 1124a and the second feed line 1124b can be connected to a pair of rear end radial ends 1126a-1 and 1126b-1 separated with respect to the separation slit 1125, as shown in Figures 27A and 27C, so as to simultaneously energize them.

[0195] However, as described above, the pair of rear end radial ends 1126a-1 and 1126b-1 are separated from each other by the separation slit 1125. Therefore, a connecting terminal 1128 may be additionally formed on one of the pair of rear end radial ends 1126a-1 and 1126b-1 for connecting them to energize simultaneously with the first feed line 1124a and the second feed line 1124b.

[0196] To illustrate this in more detail with reference to Figure 27A, the first feedline 1124a branches out and extends toward the pair of first dipoles 1126-Aa and 1126-Ab, and is arranged to occupy one of the pair of rear end radial ends 1126a-1 and 1126b-1, with each end being bent toward the other rear end radial end 1126a-1 or 1126b-1 that it does not occupy.

[0197] At this time, the aforementioned connecting terminal 1128 is positioned superimposed on each end of the first feed line 1124a by the other rear end radial end 1126a-1, 1126b-1 that is not occupied by the first feed line 1124a. By welding the superimposed parts of the first feed line 1124a and the pair of rear end radial ends 1126a-1, 1126b-1 using a laser point welding method, mutual power supply can be enabled and energized.

[0198] At least one welding point hole 1124a-L may be formed at the tip of the first feed line 1124a to enable welding by laser point welding.

[0199] On the other hand, in the low-band element 1120 according to the second realization example, when at least one dipole 1126 is involved in polarization beam radiation in the first frequency band, an element mounting hole 1121 is formed in the base panel 1122 through which a mid-band element 130, which is involved in polarization beam radiation in a second frequency band (e.g., the mid-band), which is a relatively larger frequency band than the first frequency band, penetrates in the front-to-back direction.

[0200] Here, it is preferable that the element mounting hole 1121 is formed to a size such that at least the balloon portion 133 of the midband element 130 does not physically interfere with each other.

[0201] In addition, the low-band element 1120 in the second implementation example may also have a ground portion 1121G formed thereon, which serves as the grounding (ground terminal) for the mid-band element 130, as described above.

[0202] The ground section 1121G may be integrally formed to connect the rear end radiating ends 1126a-1, 1126b-1 of one of the pair of first dipoles 1126-Aa, 1126-Ab and the rear end radiating ends 1126a-1, 1126b-1 of one of the pair of second dipoles 1126-Ba, 1126-Bb.

[0203] In this case, it is preferable that the front end of the ground portion 1121G is integrally formed so as to be located in front of the front end of the midband element 130 which is inserted through the element mounting hole 1121.

[0204] On the other hand, the low-band element 1120 according to the second realization example differs from the low-band element 120 according to the first realization example in its manufacturing method, and therefore requires an additional shape-retaining configuration to maintain its framework (or shape), similar to the low-band element body 122.

[0205] More specifically, the low-band element 1120 according to the second embodiment may further include a shape-retaining member 1129A provided by a separation slit 1125 such that a pair of rear-end radiating ends 1126a-1, 1126b-1 maintain a predetermined separation distance, and a shape-retaining connector 1129B that interconnects the tips of the front-end radiating ends 1126a-2, 1126b-2 of any one of the pair of first dipoles 1126-Aa, 1126-Ab and the tips of the front-end radiating ends 1126a-2, 1126b-2 of any one of the pair of second dipoles 1126-Ba, 1126-Bb to maintain their shape.

[0206] The shape-retaining member 1129A and shape-retaining connector 1129B here are made of a non-conductive material and serve to block the mutual signal coupling of the pair of dipole radiating ends 1126a and 1126b while maintaining the rigidity of the low-band element 1120 in the second implementation example.

[0207] Such shape-retaining members 1129A and shape-retaining connectors 1129B do not completely maintain the shape of the low-band element 1120, but rather allow for appropriate shape deformation of the low-band element 1120 according to the second implementation when warping occurs, at least due to the large vertical length of the reflecting panel 110.

[0208] This is because if the low-band element 1120 is not able to respond to the warping phenomenon of the reflecting panel 110 in terms of shape, the PIMD problem will actually increase. The applicant of the present invention confirmed that the deformation of the corresponding shape to the warping phenomenon of the reflecting panel 110, to the extent that it does not affect the pattern beam emission of the low-band element 1120, improves the PIMD problem.

[0209] For this purpose, the base panel 1122 and at least one or more dipoles 1126 are preferably provided in the form of sheets of a conductive material (e.g., aluminum) having a thickness that allows them to deform in shape to correspond to the flow of the reflecting panel 110.

[0210] On the other hand, in the second realization example, the low-band element 1120 may also have at least one dipole 1126 configuration in which the front radiating ends 1126a-2 and 1126b-2 are bent relative to the rear radiating ends 1126a-1 and 1126b-1, and bent perpendicular to the front surface of the reflecting panel 110.

[0211] More specifically, at least one of the configurations of the dipole 1126, the front radiating ends 1126a-2, 1126b-2, may have a bent surface that is bent perpendicular to the front surface of the reflecting panel 110 to avoid beam interference of the mid-band element 130 positioned between adjacent radiating elements (i.e., low-band elements 1120).

[0212] Here, the front radiating ends 1126a-2 and 1126b-2 may be bent in such a way as to reduce the area of ​​the vertical cross-section of the square front end of a radiating element that does not have a bent surface (i.e., the low-band element 1120).

[0213] On the other hand, the tips 1120E-1 and 1120E-2 of the front end radial ends 1126a-2 and 1126b-2 may be separated from the tips of the adjacent front end radial ends 1126a-2 and 1126b-2, extend parallel to the sides of the front end radial ends 1126a-2 and 1126b-2, and be bent in the direction of the element mounting hole 1121 to be extended in a parallel manner.

[0214] This can perform the same function as the bent tips 126E-1 and 126E-2 of the pair of dipole radiating ends 126a and 126b of the low-band element 120 in the first implementation example.

[0215] Figure 30 is a perspective view showing the mid-band element in the configuration of an antenna device according to one embodiment of the present invention; Figure 31 is an exploded perspective view of Figure 30; Figure 32 is a front view and rear view of Figure 30; Figure 33 is a side view of Figure 30; Figure 34 is another implementation example of the mid-band element in the configuration of an antenna device according to one embodiment of the present invention; and Figure 35 is an exploded perspective view of Figure 34.

[0216] As shown in Figures 30 to 35, the multiple mid-band elements 130 may include a base panel 138 that mediates coupling to the reflecting panel 110, a balloon portion 133 whose rear end is fixed to the base panel 138 and on which outer feed patterns 133a-1 and 133a-2 are printed, a radiating panel 131 fixed to the front end of the balloon portion 133 and connected to the outer feed patterns 133a-1 and 133a-2 and on which dipole patterns 132a and 132b that radiate a predetermined pattern beam are formed, and a radiating director 134 stacked in front of the radiating panel 131.

[0217] The dipole patterns 132a and 132b formed on the radiating panel 131 are made of a conductive material and are arranged in an "X" shape on the radiating panel 131, playing a role in forming polarization beams of +45 degrees and -45 degrees.

[0218] On the other hand, the outer feed patterns 133a-1 and 133a-2 may have some of their ends that form the dipole patterns 132a and 132b bent toward the reflecting panel 110.

[0219] Here, the outer feed patterns 133a-1 and 133a-2 do not necessarily have to be bent. The pattern beam of the inner midband element 130I, which is provided through the element through-hole 121 of the lowband element 120, does not need to be bent as long as it is not affected by the lowband element 120.

[0220] For example, as shown in Figures 30 to 33, if the mid-band element 130 further includes an extension director panel 136 positioned forward of the radiating director panel 134 so as to minimize the effect of pattern beam interference of the low-band element 120, then the outer feed patterns 133a-1 and 133a-2 do not need to be bent.

[0221] Here, the radiation director 134 may be provided protruding forward from the front of the radiation panel 131 via a mounting bracket 135.

[0222] The radiation director 134 reduces the influence of the pattern beam of the low-band element 120 and guides the radiation direction of the pattern beam of the mid-band element 130 in the positive direction.

[0223] In addition, the extension director panel 136 can be connected via an extended connector 137 that extends from the front end of the radiating director 134.

[0224] However, in embodiments where the extension director panel 136 is not provided, as shown in Figures 34 and 35, it is preferable to minimize radiation interference of the pattern beam by bending the outer feed patterns 133a-1 and 133a-2.

[0225] On the other hand, the outer feed patterns 133a-1 and 133a-2 of the balloon section 133 can be energized by the second transmission line 300 and lead terminals 139a and 139b.

[0226] The tips 139-A and 139-B of lead terminals 139a and 139b pass through the base panel 138 and are connected to outer feed patterns 133a-1 and 133a-2, respectively, and are energizable via a pair of solder pins 140a and 140b.

[0227] Thus, the antenna device 1 to which the antenna radiating element according to one embodiment of the present invention is applied offers the advantage of improving beamforming performance by arranging the low-band element 120 and the mid-band element 130 related to the dual frequency band in superimposition, and by manufacturing the low-band element 120 to an appropriate size in order to minimize interference from each pattern beam.

[0228] Figure 36 shows a partial front view (a) of the first transmission line and a graph (b) showing an ideal phase difference diagram, illustrating how the phase difference is achieved by adjusting the position and depth of the impedance matching step of the phase dielectric in the configuration of a phase shifter of an antenna device according to one embodiment of the present invention.

[0229] In an antenna device 1 according to one embodiment of the present invention, the low-band elements 120 can be arranged spaced apart in the vertical direction (V-direction) so that six of them form a single RF chain, as described above. Here, each low-band element 120 may be arranged so that the spacing distance between adjacent low-band elements 120 is the same as ΔXl. This is because, generally, when the phase shifter 400A is in operation, if the phase difference ΔX between the low-band elements 120 is the same, the side lobes formed during beamforming can be minimized, and the resulting decrease in gain can also be minimized.

[0230] In other words, it is preferable that the phase value transitioned by the low-band phase shifter 400A of the phase shifters 400A and 400B of the antenna device 1 according to one embodiment of the present invention is driven to have the same phase difference with respect to a reference phase, as shown in Figure 17(b).

[0231] However, as explained earlier, the phase dielectric 450 is provided to be moved in conjunction with the moving clamp 440 by a plurality of vertical moving bars 430 and is positioned at the first to third branching points S1, S2, and S3 respectively. In order to achieve the same phase difference ΔX as described above, there is a problem in that the moving distances of the phase dielectric 450 positioned at each branching point S1, S2, and S3 must be different.

[0232] Thus, moving each of the phase dielectrics 450 located at each branching point S1, S2, and S3 by a different moving distance leads to the problem that a separate drive mechanism is required to drive each phase dielectric 450 independently due to the physical spatial constraints of the first transmission line 200, which is provided in the form of an air strip line.

[0233] Here, in the phase shifters 400A and 400B of the antenna device 1 according to one embodiment of the present invention, as shown in Figure 36, when the target phase values ​​of each low-band element 120 are set to the maximum value +2.5X and the minimum value -2.5X, the phase dielectric 450 located at the first branch point S1 is processed and formed such that the phase difference ΔX between each low-band element 120 is the same, with respect to the upper transmission line 220U and the lower transmission line 220D being +1.5X and -1.5X respectively. The phase dielectric 450 located at the second branch point S2 and the third branch point S3 is processed and formed such that the phase difference 455 is the same, with respect to the upper branch transmission line 230-1 and the lower branch transmission line 230-3 being +1X, except for the middle branch transmission line 230-2 of the three branch transmission lines 230-1 to 230-3.

[0234] Thus, the phase shifters 400A and 400B of the antenna device 1 according to one embodiment of the present invention have the advantage of being able to change the effective dielectric constant by forming different impedance matching steps 455 in the phase dielectric 450, thereby allowing them to be varied to different electrical phases even when the phase dielectric 450 is physically moved the same distance.

[0235] An antenna radiating element according to one embodiment of the present invention has been described in detail above with reference to the attached drawings. However, the embodiments of the present invention are not necessarily limited to the embodiment described above, and it goes without saying that various modifications and equivalent implementations are possible by persons with ordinary skill in the art to which the present invention pertains. Therefore, the true scope of the rights of the present invention is determined by the claims described later. [Industrial applicability]

[0236] The present invention provides an antenna device that can apply an optimal arrangement structure of radiating elements in different frequency bands to improve antenna gain, thereby reducing the weight of components and enabling the manufacture of a lightweight product. [Explanation of Symbols]

[0237] 1: Antenna device, 5: Antenna housing 10: Rear panel, 20: Side panel 30: Radome panel, 40: Cap panel 50: Reinforcement frame, 100: Antenna board assembly 110: Reflecting panel, 120, 130: Radiating element 120: Low-band element, 121: Element mounting hole 122: Low-band element body, 126: Dipole pattern 130: Mid-band element, 131: Radiation panel 132a, 132b: Dipole pattern, 133: Balloon section 134: Radiation director, 136: Extension director panel 138: Base panel, 139a, 139b: Lead terminals 200: First transmission line, 210L, 210R: Input lines 220U: Upper transmission line, 220D: Lower transmission line 300: Second transmission line, 400A, 400B: Phase shifter 410: Drive motor, 411: Pinion gear teeth 420: Rack gear, 421: Rack gear teeth 430: Vertical moving bar, 440: Moving clamp 450: Dielectric panel for phase adjustment, 455: Impedance matching step 460: Dielectric panel for impedance matching, 1120: Second implementation example 1121: Element mounting hole, 1122: Base panel 1124a, 1124b: Feed line, 1125: Separation slit 1126: Dipole, 1129A: Shape-retaining member 1129B: Shape-retaining connector, 1129C: Feeder separation section

Claims

1. A base panel is laminated and bonded parallel to the front of the reflecting panel, An antenna radiating element comprising: four surfaces formed by bending and extending from the base panel in different directions, and at least one dipole formed by bending at an acute angle with respect to the base panel.

2. The antenna radiating element according to claim 1, wherein at least one of the dipoles radiates beams with different polarizations.

3. The base panel and the at least one dipole are provided by conductive sheet panels having the same thickness. The radiating element for an antenna according to claim 2, wherein the at least one dipole realizes at least one polarization radiation pattern.

4. The aforementioned at least one dipole is The antenna radiating element according to claim 3, further comprising a dipole radiating end that is separated and symmetrical with respect to the corner end formed in the extended direction, thereby realizing a radiation pattern with the same polarization.

5. The separation distance of the dipole radiating ends is maintained by a shape-retaining member, as described in claim 4, for an antenna radiating element.

6. The antenna radiating element according to claim 1, wherein at least one dipole is manufactured separately from the base panel and then detachably coupled to it.

7. The antenna radiating element according to claim 1, wherein the base panel and the at least one dipole are manufactured integrally by a press die, and then bent apart so as to have dipole radiating ends that are separated and symmetrical with respect to the corner ends formed in the extended direction and realize a radiation pattern of the same polarization.

8. The antenna radiating element according to claim 1, wherein at least one dipole extends radially forward from each vertex of the square-shaped base panel and has four corners in which the area of ​​the vertical cross-section corresponding to the front end of each vertex gradually increases.

9. The at least one dipole includes a pair of first dipoles that are involved in one of the different polarization beams and occupy both corners in the diagonal direction of one of the four corners, and a pair of second dipoles that are involved in another of the different polarization beams and occupy both corners in the diagonal direction of the other of the four corners, The antenna radiating element according to claim 8, wherein the pair of first dipoles and the pair of second dipoles are separated by separation slits formed along the corner portions they occupy to form the dipole radiating ends.

10. The pair of first dipoles and the pair of second dipoles are, A rear end radial end extending parallel to the angle parallel to the separation slit, The antenna radiating element according to claim 9, further comprising a front radiating end that is bent and extended from the front end of the rear radiating end and extends to a portion corresponding to the vertex of an adjacent corner.

11. The antenna radiating element according to claim 9, further comprising a first feed line and a second feed line for applying a predetermined electrical signal to the pair of first dipoles and the pair of second dipoles.

12. Either the first feed line or the second feed line is fixed to either the front or back of the pair of first and second dipoles. The antenna radiating element according to claim 11, wherein the other of the first feedline and the second feedline is fixed to the other of the front or back of the pair of first and second dipoles.

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

14. The antenna radiating element according to claim 13, further comprising at least one feeder separation portion that separates the first feed line and the second feed line from the front or back of the pair of first and second dipoles.

15. The antenna radiating element according to claim 11, wherein the first feed line and the second feed line are connected to a pair of rear end radiating ends separated with respect to the separation slit so as to simultaneously supply current to them.

16. The antenna radiating element according to claim 15, wherein a connecting terminal is additionally formed on one of the pair of rear end radiating ends for connecting to the first feed line and the second feed line for energizing.

17. When the at least one dipole is involved in the emission of a polarization beam in the first frequency band, The antenna radiating element according to claim 10, wherein the base panel has an element mounting hole formed therein through which a mid-band element involved in polarization beam radiation in a second frequency band, which is a frequency band relatively larger than the first frequency band, penetrates in the front-to-back direction.

18. The antenna radiating element according to claim 17, further comprising a ground portion integrally formed to connect the rear end radiating end of any one of the pair of first dipoles and the rear end radiating end of any one of the pair of second dipoles.

19. The antenna radiating element according to claim 18, wherein the front end of the ground portion is located at least forward of the front end of the midband element.

20. The antenna radiating element according to claim 10, further comprising a shape-retaining connector that interconnects and maintains the shape of the tip of the front end radiating end of either one of the pair of first dipoles and the tip of the front end radiating end of either one of the pair of second dipoles.

21. The antenna radiating element according to claim 17, wherein the front radiating end is bent relative to the rear radiating end and bent perpendicularly to the front surface of the reflecting panel.

22. The antenna radiating element according to claim 17, wherein the front radiating end is bent to reduce the area of ​​the vertical cross-section relative to the area of ​​the square front end of the radiating element that does not have a bent surface, so as to avoid beam interference of the midband element arranged between adjacent radiating elements.

23. The antenna radiating element according to claim 17, wherein the tip of the front end radiating end is separated from the tip of the adjacent front end radiating end, extends parallel to the side surface of the front end radiating end, and is bent in the direction of the element mounting hole to be extended in a line.

24. The antenna radiating element according to claim 1, wherein the base panel and the at least one dipole are provided in the form of a sheet of conductive material having a thickness that allows for deformation in shape to correspond to the flow of the reflecting panel.

Images