Radio frequency module for antenna and antenna device comprising same

Abstract

The present invention relates to a radio frequency (RF) module for an antenna and an antenna device comprising the same, and more particularly, to a radio frequency (RF) module for an antenna and an antenna device comprising the same, comprising: a plurality of RF filter units comprising a filter body formed to be elongated in the vertical direction; a plurality of radiating element sections which are formed so as to be longer than the plurality of RF filter sections, and which are detachably fixed so as to be electrically connected to the respective front ends of the plurality of RF filter sections; the present invention provides an antenna device having a plurality of radiating element portions, and an ISOI wall coupled to each of both end portions in the width direction of the plurality of radiating element portions and arranged in a divided manner so as to minimize ISOI between adjacent radiating element portions, thereby providing the advantages of facilitating installation and replacement and improving the overall communication efficiency of the antenna device.

Description

Technical Field

[0001] The present invention relates to an RF module for antennas and an antenna device including therewith, and more specifically, to an RF module for antennas and an antenna device including therewith that not only minimizes radio wave interference between modules, but also prevents indirect coupling of beams radiated from the radiating element, and improves the PIMD problem. Background Technology

[0002] The base station antennas used in mobile communication systems, including repeaters, come in various shapes and structures, and typically have a structure in which multiple radiating elements are appropriately arranged on at least one reflector that is upright in the length direction.

[0003] Recently, research has been actively conducted on achieving miniaturized, lightweight, and low-cost structures while meeting the high-performance requirements of MIMO-based antennas. In particular, in the case of antenna devices that are suitable for implementing patch-type radiating elements with linear or circular polarization, it is common practice to plate the radiating elements with a dielectric substrate made of plastic or ceramic materials and then solder them to a PCB (printed circuit board) or similar device.

[0004] However, in the case of MIMO-based antenna devices, not only are multiple components concentrated, but the entire product also needs to be formed in a long vertical direction in order to achieve smooth beamforming. Therefore, there is a problem that must first be studied to improve the PIMD problem that is deeply rooted in communication product manufacturers.

[0005] Furthermore, configuring multiple antenna elements under space constraints will cause coupling between the antenna elements, and increasing the coupling between multiple antenna elements can cause signal leakage. Therefore, there is a potential problem of reducing the overall efficiency of the antenna device.

[0006] Therefore, the first step is to research and develop an antenna device that can both ensure sufficient channel capacity and achieve decoupling between antenna elements. At this time, preventing the overall size of the antenna device from increasing is also an important research topic. Summary of the Invention

[0007] Technical issues

[0008] The present invention is proposed to solve the above-mentioned technical problems. The object of the present invention is to provide an antenna radio frequency (RF) module and an antenna device including the present invention, which are manufactured in a modular unit, so as to minimize the radio wave interference between the antenna RF modules disposed in the radome and improve the PIMD problem.

[0009] Meanwhile, another object of the present invention is to provide an antenna radio frequency (RF) module and an antenna device including the present invention, which enables decoupling between multiple antenna elements arranged in a centralized manner to prevent an increase in the size of the entire antenna device.

[0010] The problems of this invention are not limited to those mentioned above, and those skilled in the art will clearly understand other problems not mentioned from the following description.

[0011] Solution to the problem

[0012] An embodiment of the present invention provides an antenna radio frequency module comprising: a plurality of RF filter sections, each including a filter body extending elongated in the vertical direction; a plurality of radiating element sections formed to be longer than the length of the plurality of RF filter sections and fixed in a detachable manner for electrical connection to each front end of the plurality of RF filter sections; and an isolation side wall, which is combined with both ends of the plurality of radiating element sections in the width direction and is configured to minimize radio wave interference with adjacent radiating element sections.

[0013] The front end of the anti-electromagnetic interference wall can be cut into a concave-convex shape, and the rear end of the anti-electromagnetic interference wall can be bent and extended toward the filter body.

[0014] Furthermore, the anti-radio interference wall may include: a mounting surface, at least a portion of which is bent in an overlapping manner on the back side of the width direction end of each of the plurality of radiating element sections to engage with the front end of each of the plurality of RF filter sections of each of the plurality of radiating element sections; an anti-radio interference surface, as the front end, which forms the concave-convex shape from the mounting surface and bends forward; and a ground surface, as the rear end, which is bent from the mounting surface to the filter body side without the cutting.

[0015] Furthermore, each of the plurality of radiating elements may include: an antenna PCB, fixed to the front end of the filter body via the anti-electromagnetic interference wall, and patterned with a variable circuit pattern electrically connected to a pair of input terminals and a plurality of transmission lines branching from the variable circuit pattern into at least one and extending to be electrically connected to a plurality of output terminals that are respectively configured as a pair; a balancer, located at a position corresponding to the plurality of output terminals of the antenna PCB and arranged in a cross-shaped manner; and a plurality of antenna array elements, combined with the front end of the balancer to perform a beam output function of at least one polarization in dual polarization.

[0016] Furthermore, interference avoidance holes can be formed in the anti-electromagnetic interference wall to prevent interference with the connection between the wall and the vertical mounting rod, which is provided for rotating the variable switching panel for the variable circuit pattern contacts.

[0017] Furthermore, the weighing device may include a pair of feed support ends, which are fixed to an “X”-shaped setting slot formed on the antenna element plate and have a feed pattern line made of conductive material.

[0018] Furthermore, the balance unit may also include a component support end, which is combined with the front end of the pair of feed support ends to support the antenna array components.

[0019] Furthermore, the present invention may also include at least one radome anti-deformation protrusion, which is disposed on the antenna element plate and is configured to support and protect the plurality of antenna array elements on the back of the front radome panel.

[0020] Furthermore, the radome anti-deformation protrusion may include: a support rod fixed to the antenna element plate; and a height adjustment screw disposed at the front end of the support rod to release the separation caused by the assembly tolerance of the radome panel.

[0021] An antenna device according to an embodiment of the present invention may include: an antenna radio frequency module including a plurality of RF filter sections and a plurality of radiating element sections, wherein the plurality of RF filter sections include filter bodies that are elongated in the vertical direction, and the plurality of radiating element sections are formed to be longer than the plurality of RF filter sections and are fixed in a detachable manner for electrical connection with each front end of the plurality of RF filter sections; a box-shaped radome section with a front opening for accommodating the antenna RF module in the internal space; and a radar dome panel that covers the front end of the opening of the radome section and protects the antenna RF module from the outside. The antenna radio frequency module also includes an isolation side wall, which is combined with the two ends in the width direction of the plurality of radiating element sections and is divided and arranged to minimize radio wave interference with adjacent radiating element sections.

[0022] Among them, a decoupling pattern portion of a predetermined shape for minimizing indirect coupling between the plurality of antenna elements may be formed on the back side of the radome panel.

[0023] Furthermore, in the portions that are set in a rhombus or honeycomb shape, the decoupling pattern portion can be formed in an "X" shape.

[0024] Furthermore, at least one radome anti-deformation protrusion may be provided in the radiating element portion of the antenna radio frequency module to support the back side of the radome panel.

[0025] Furthermore, a portion of the front end of the anti-electromagnetic interference wall can be cut into an irregular shape, and the rear end of the anti-electromagnetic interference wall can be bent and extended toward the filter body.

[0026] Furthermore, the anti-radio interference wall may include: a mounting surface, at least a portion of which is bent in an overlapping manner on the back side of the width direction end of each of the plurality of radiating element sections to engage with the front end of each of the plurality of RF filter sections of each of the plurality of radiating element sections; an anti-radio interference surface, as the front end, which forms the concave-convex shape from the mounting surface and bends forward; and a ground surface, as the rear end, which is bent from the mounting surface to the filter body side without the cutting.

[0027] Furthermore, each of the plurality of radiating elements may include: an antenna PCB, fixed to the front end of the filter body via the anti-electromagnetic interference wall, and patterned with a variable circuit pattern electrically connected to a pair of input terminals and a plurality of transmission lines branching from the variable circuit pattern into at least one and extending to be electrically connected to a plurality of output terminals that are respectively configured as a pair; a balancer, located at a position corresponding to the plurality of output terminals of the antenna PCB and arranged in a cross-shaped manner; and a plurality of antenna array elements, combined with the front end of the balancer to perform a beam output function of at least one polarization in dual polarization.

[0028] Furthermore, the present invention may also include a phase shifter comprising a variable switching panel printed with a variable contact pattern for energizing at least one power-off point contact formed on the variable circuit pattern, and a vertical mounting rod for rotating the variable switching panel. In addition, interference avoidance holes for preventing interference with the vertical mounting rod may be formed in the anti-electromagnetic interference wall.

[0029] Furthermore, the weighing device may include a pair of feed support ends, which are fixed to an “X”-shaped setting slot formed on the antenna element plate and have a feed pattern line made of conductive material.

[0030] Furthermore, the balance unit may also include a component support end, which is combined with the front end of the pair of feed support ends to support the antenna array components.

[0031] Furthermore, the present invention may also include at least one radome anti-deformation protrusion, which is disposed on the antenna element plate and is configured to support and protect the plurality of antenna array elements on the back of the front radome panel.

[0032] The effects of the invention

[0033] According to an embodiment of the present invention, an antenna radio frequency module and an antenna device including the same have the effect of not only being able to centrally arrange multiple components in a limited space without increasing size, but also minimizing radio wave interference (coupling) between antenna elements, thereby improving the PIMD problem. Attached Figure Description

[0034] Figure 1 This is a perspective view showing the external appearance of an antenna RF module and an antenna device including the same, according to an embodiment of the present invention.

[0035] Figure 2a and Figure 2b In order to be in Figure 1In the structure, the front and rear portions of the radome panel are separated in a three-dimensional diagram.

[0036] Figure 3 for Figure 1 The entire exploded 3D diagram,

[0037] Figure 4 This is an exploded rear perspective view of the structure in Figure 2 with the radome removed.

[0038] Figure 5a and Figure 5b In order to be in Figure 4 An exploded perspective view of the front and rear sides of the separate phase shifter in the structure.

[0039] Figure 6 This is an exploded perspective view of the front side of the structure in Figure 2 with the radome removed.

[0040] Figure 7 Figure 2 shows a cross-sectional view and a partially enlarged view illustrating the function of the support handle in the structure.

[0041] Figure 8 This is a perspective view of an antenna RF module according to an embodiment of the present invention.

[0042] Figure 9a and Figure 9b for Figure 8 An exploded perspective view of the front and rear sides.

[0043] Figure 10 In order to be in Figure 8 The three-dimensional diagram used to illustrate the structure of the anti-electromagnetic interference wall ( Figure 10 (a) and the main view Figure 10 (b)

[0044] Figure 11 In order to be in Figure 8 A three-dimensional diagram showing the RF filter section in the structure.

[0045] Figure 12a and Figure 12b for Figure 11 The exploded three-dimensional diagrams of part (a) and part (b),

[0046] Figure 13 For the purpose of explaining by Figure 10 A simplified diagram illustrating the interference effects caused by the anti-radio wave interference wall.

[0047] Figure 14 To indicate in Figure 10 A side view of the structure of a common resonant part disposed inside the filter body of multiple RF filter sections in the structure. Figure 14(a) part), concept map ( Figure 14 (b) and internal structure diagram ( Figure 14 (c)

[0048] Figure 15 To leverage Figure 14 The frequency response diagram is revealed by the shared resonant section.

[0049] Figure 16 To indicate Figure 14 A 3D diagram of the coupler in the structure.

[0050] Figure 17 To present through Figure 16 The coupler is used to obtain an improved frequency response map of PIMD.

[0051] Figure 18 To indicate in Figure 1 A perspective view of the configuration of a phase shifter that changes the physical length of a transmission line through a variable contact pattern set in the radiating element section.

[0052] Figure 19a and Figure 19b To indicate in Figure 18 The structure retains only the front and rear three-dimensional views of the phase shifter in the state of using a single antenna RF module.

[0053] Figure 20 For the purpose of illustrating the relative Figure 18 A transmission line structure diagram showing the physical transmission length change caused by the operation of a variable switching panel with a variable circuit pattern.

[0054] Figure 21a and Figure 21b In order to be in Figure 18 The structure of the phase shifter shows an exploded perspective view of the front and rear sides of the drive unit.

[0055] Explanation of reference numerals in the attached figures

[0056] 100: Antenna assembly; 110: Antenna radome.

[0057] 110S: Internal space 120: Motherboard

[0058] 150: Radome panel; 151: Mounting clip

[0059] 155: Decoupling pattern section; 200: RF filter section

[0060] 210: Filter body 215: Resonator

[0061] 220L: Left filter section; 220R: Right filter section

[0062] 230A~230D: Filter mounting bracket; 235: Fixing screw

[0063] 250: Input port section; 250A~250D: Coaxial connector (DCC)

[0064] 260: Output port section; 270L: Left side filter cover

[0065] 270R: Right side filter cover; 280L, 280R: Filter tuning cover

[0066] 291: Coupler; 292: Frequency divider

[0067] 300: Radiation element section; 310: Antenna element board

[0068] 320: Weighing Instrument Replacement Section; 330: Antenna Array Components

[0069] 500: AFEM 600: Phase Shifter

[0070] 610: Drive motor section; 611: Motor housing

[0071] 612: First pinion; 613: Rotating shaft

[0072] 614: Second pinion; 615L, 615R: Linkage pinion

[0073] 616L, 616R: Linkage bevel gear; 617L, 617R: Upward and downward moving guide block

[0074] 617': Screw rod; 620: Up and down movement guide.

[0075] 621: Front motor mounting bracket; 622L, 622R: Left and right motor mounting brackets

[0076] 623L, 623R: Moving guide groove; 630: Up and down moving panel

[0077] 640: Upper and lower connecting rods; 650: Horizontal mounting rod

[0078] 655U, 655D: Vertical mounting rod; 660: Variable switching panel

[0079] 669: Rotating connection point Detailed Implementation

[0080] Hereinafter, an RF module for antenna and an antenna device including the same according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0081] It should be noted that when assigning reference numerals to structural elements in the various figures, even if they are shown in different figures, the same reference numerals should be assigned to the same structural elements as much as possible. Furthermore, in describing embodiments of the present invention, detailed descriptions of related well-known structures or functions will be omitted if it is determined that such detailed descriptions may hinder understanding of the embodiments of the present invention.

[0082] In describing the structural elements of embodiments of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are used only to distinguish structural elements from other structural elements, and the nature, order, or sequence of related structural elements is not limited by these terms. Furthermore, unless defined differently, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Terms commonly used that are identical to their dictionary definitions should be interpreted as having a meaning consistent with the context of the relevant art, and will not be construed as having an overly ideal or formal meaning unless explicitly defined in this application.

[0083] Figure 1 This is a perspective view showing the external appearance of an antenna RF module and an antenna device including the same, according to an embodiment of the present invention. Figure 2a and Figure 2b In order to be in Figure 1 In the structure, the front and rear portions of the radome panel are separated in a three-dimensional diagram. Figure 3 for Figure 1 The complete exploded 3D diagram.

[0084] like Figures 1 to 3 As shown, an antenna device 100 according to an embodiment of the present invention includes an antenna cover portion 110, which is formed with an opening on the front surface to form a box shape of an internal space 110S, so as to house the antenna RF module 500 and motherboard 120, etc., which will be described later, in a stacked manner.

[0085] A radome panel 150 can be provided at the front of the opening of the radome 110 to provide shielding, thereby protecting the antenna RF module 500 and the like built into the internal space from the outside. The radome panel 150 can be made of a material that can transmit frequency radiation beams radiated from the multiple antenna front-end modules (AFEMs) 500 described later.

[0086] This radome panel 150 can not only be configured at a specified distance in front of multiple AFEM500s to protect them from external factors, but also can perform the function of preventing problems caused by coupling between multiple antenna array elements 330 through decoupling.

[0087] For example, the coupling between multiple antenna array elements 330 can be direct coupling, which allows the multiple antenna array elements 330 to be directly coupled to each other, or indirect coupling, which reflects at least a portion of the electromagnetic wave radiated from a certain antenna array element 330 to the radome panel 150, thereby coupling with other antenna array elements 330.

[0088] A decoupling pattern portion 155 may be formed on the back side of the radome panel 150 to decouple electromagnetic waves radiated from the multiple antenna array elements 330. The decoupling pattern portion 155 serves to minimize the indirect coupling between the antenna array elements 330.

[0089] like Figure 2b As shown, the decoupling pattern portion 155 may be formed on a reinforcing rib (not indicated in the drawing), which is formed in a generally rhombus shape repeatedly arranged on the back side of the radome panel 150 (see reference). Figure 2b (The attached figure is labeled "155n") or has a hexagonal shape (see reference). Figure 2b The pattern is marked with the numeral "155h" in the attached diagram.

[0090] More specifically, the reinforcing ribs can protrude rearward to repeat a diamond shape 155n or a hexagonal shape 155h pattern on the back side of the radar dome panel 150 by means of its outer perimeter, and a conductive material can be coated on a portion of the reinforcing ribs by plating.

[0091] Among them, such as Figure 2b and Figure 4 As shown, the shape of the decoupling pattern portion 155 of the material coated with conductive material can be set to an "X" shape.

[0092] A portion of the electromagnetic waves radiated from the multiple antenna array elements 330 can be transmitted through the radome panel 150, but a portion can be reflected from the inner surface of the radome panel 150 and cause coupling with other antenna array elements 330. Moreover, decoupling is achieved through the aforementioned "X"-shaped decoupling pattern portion 155, thereby minimizing the indirect coupling between the multiple antenna array elements 330.

[0093] Therefore, when comparing with the state before decoupling, it is preferable to use the decoupling pattern section 155 to achieve the opposite phase of the decoupled electromagnetic wave.

[0094] In this way, various problems caused by increased coupling between multiple antenna array elements 330 can be prevented (such as signal leakage and reduced channel capacity of MIMO systems).

[0095] On the other hand, at the edge of the radar dome panel 150, a plurality of fixing clips 151 can be provided around the perimeter at a predetermined distance, and the plurality of fixing clips 151 can be detachably fixed to the radar dome panel 150 by engaging with the front end of the antenna dome 110.

[0096] Preferably, the radome 110 is made of a metal material with excellent thermal conductivity, which facilitates heat transfer (dissipation). Simultaneously, multiple heat dissipation pins 111 can be arranged on the back of the radome 110. These pins receive heat from the heat-generating element 121 and dissipate it to the external space. The heat-generating element 121 is mounted on the mainboard 120 stacked in the internal space 110S and is used to generate system heat.

[0097] Multiple heat dissipation pins 111 can be integrally formed on the back of the radome 110, or can be manufactured separately from the radome 110 and joined to the back of the radome 110 by welding or other means.

[0098] In this case, the multiple heat dissipation pins 111 can be made of aluminum (Al) material with high thermal conductivity and configured to dissipate heat only by the thermal conductivity of the material itself, which is a manual heat dissipation method. Alternatively, they can be filled with refrigerant and configured to dissipate heat according to the phase change of the refrigerant, which is an active heat dissipation method.

[0099] In the case of active cooling, it has the advantage of not only being able to utilize metal substrates with relatively lower thermal conductivity than manual cooling methods, but also increasing the range of choices.

[0100] On the other hand, such as Figure 2b As shown, a groove (trench) structure (not indicated in the attached drawing) may be provided on the back side of the antenna radome 110 to provide a portion for dividing the middle part between the left and right ends vertically.

[0101] Multiple press-in portions (not indicated in the figures) may be provided on the back of the antenna cover portion 110 corresponding to the left and right sides of the trench structure, so that the multiple heat dissipation pins 111 of the above-mentioned active heat dissipation method are respectively arranged to tilt upward towards the left and right ends.

[0102] In this configuration, multiple press-in sections are respectively arranged towards the upper left and upper right with the groove structure as the center. When multiple heat dissipation pins 111, which are active heat dissipation methods, are made of the same length, heat dissipation pins (not shown in the attached drawings) of manual heat dissipation methods can be combined with press-in sections of different lengths (or configurations).

[0103] Meanwhile, in the upper part of the trench structure, a specified refrigerant capable of phase change can be filled in the part that is combined with the heat dissipation pin of the manual heat dissipation method (the inverted triangle-shaped part) and the part corresponding to the trench structure. Furthermore, heat can be easily transferred from the internal space 110S of the radome 110 to the back part of the radome 110 through the phase change of the refrigerant, thereby improving the heat dissipation performance.

[0104] On the other hand, although not shown, the radome 110 can serve to engage with the support rod provided for mounting the antenna device 100.

[0105] Meanwhile, although not shown in the figure, handles may be provided on the left and right sides of the antenna cover 110, so that operators can hold the handles on site to transport the antenna device 100 of an embodiment of the present invention or to manually install the support rod.

[0106] Figure 4 This is an exploded rear perspective view of the structure in Figure 2 with the radome removed. Figure 5a and Figure 5b In order to be in Figure 4 An exploded perspective view of the front and rear sides of the separate phase shifter in the structure. Figure 6 This is an exploded perspective view of the front side of the structure in Figure 2 with the radome removed.

[0107] like Figures 4 to 6 As shown, an antenna device 100 according to an embodiment of the present invention may include: a plurality of RF filter sections 200, including filter bodies that are elongated in the vertical direction (see reference). Figure 5a and Figure 5b (Ref. "210" in the attached drawing); a plurality of radiating element sections 300 are formed in a manner that is longer than the plurality of RF filter sections 200 and are fixed in a detachable manner so as to be electrically connected to each front end of the plurality of RF filter sections 200.

[0108] Among them, the module form of combining each filter body 210 of multiple RF filter sections 200 with a single radiating element section 300 can be defined as an antenna front end module (hereinafter referred to as "AFEM").500.

[0109] Although not illustrated, in existing antenna devices, a main board is configured once inside the radome, and multiple RF filter sections are installed at specified intervals and in specified rows and columns on the front surface of the main board. Furthermore, a single-board antenna board is stacked on the front end of the multiple RF filter sections via a reflector. Multiple antenna elements for RF communication are constructed according to different RF chains and installed on the front surface of the antenna board according to channel capacity. In this respect, it differs from an embodiment 100 of the present invention, which is modularly manufactured according to each RF chain.

[0110] like Figures 4 to 6 As shown, the AFEM500 may include multiple RF filter sections 200 and radiating element sections 300.

[0111] Among them, such as Figure 5a , Figure 5b and Figure 6 As shown, the plurality of RF filter sections 200 may include filter bodies 210, which are formed individually and elongated in the vertical direction, having a defined placement space to accommodate different TRx channels (see below). Figure 14 The attached diagram uses the reference numerals "B1Tx et al." to indicate that multiple resonators are built into the left and right sides in the width direction.

[0112] And, as Figure 5a , Figure 5b and Figure 6 As shown, the radiating element section 300 may include: an antenna element board 310, fixed to the front end face of the filter body 210, and patterned with a plurality of transmission lines (see below). Figure 9a The attached reference numerals "361L, 361R, 362L, 362R" are used; and the antenna array element 330 is connected to the front surface of the antenna element board 310 in a vertical direction and receives specified signals through multiple transmission lines 361L, 361R, 362L, 362R.

[0113] More specifically, multiple RF filter units 200 can be electrically connected to filter connection slots (not indicated in the drawings) provided on the front surface of the motherboard 120 via multiple coaxial connectors (DCC) 250A to 250D. At the same time, they can be stably electrically connected to the motherboard via multiple filter fixing brackets 230A to 230D provided on the back surface of the filter body 210 to prevent arbitrary movement of the connection points with the coaxial connectors.

[0114] However, the screw fixing based on the multiple filter fixing brackets 230A to 230D is not actually performed directly on the motherboard 120, but can be screwed to the clamshell panel 140 which is provided to shield electromagnetic waves between the motherboard 120 and the multiple RF filter sections 200, which is to be expected.

[0115] More in detail, such as Figure 4 As shown, on the rear side of the filter body 210, four coaxial connectors 250A to 250D for accessing different TRx channels are spaced apart in the vertical direction. Furthermore, as a structure for achieving stable electrical connection of the coaxial connectors 250A to 250D, four filter mounting brackets 230A to 230D can be arranged at a predetermined distance in the vertical direction.

[0116] In the clamshell panel 140, DCC through holes (not marked in the attached diagram) are provided in a through manner at the front and back of a set position, each through one of the four coaxial connectors 250A to 250D. Furthermore, four filter fixing brackets 230A to 230D can be provided with fixing screws (see reference). Figure 8 Multiple screw fastening holes (not marked) for tightening (see attached figure reference "235").

[0117] In this way, a stable electrical signal connection (access) to the AFEM500 on the motherboard 120 is an important factor in significantly preventing PIMD.

[0118] More specifically, PIMD (Passive Intermodulation Distortion), a problem that occurs in ordinary antenna devices, is a spurious signal generated by the nonlinear characteristics of manual elements. It reduces the signal-to-noise ratio in the communication path and degrades the communication quality.

[0119] In particular, there are many possible causes for the PIMD problem. The radome 110 is generally elongated vertically, and when thermal imbalance occurs due to the heat-generating element 121 mounted on the motherboard 120, the radome 110 may experience slight distortion due to thermal stress. This situation can also be a cause. In this regard, using the four filter mounting brackets 230A to 230D mentioned above to achieve a stable connection and electrical connection with the motherboard 120 can play a very important role in improving the PIMD problem.

[0120] On the other hand, a left filter section 220L and a right filter section 220R can be provided on the left and right sides of the filter body 210 in the width direction so that dual-band filtering can be realized.

[0121] The left filter section 220L and the right filter section 220R can be configured to separately implement filtering for different frequency bandwidths. For example, the left filter section 220L can cover the low-frequency band for radiating frequencies defined as between 600MHz and 800MHz, while the right filter section 220R can cover the middle-frequency band for radiating frequencies defined as between 1.7GHz and 2.4GHz. In particular, the left filter section 220L and the right filter section 220R can each be implemented using a Quadflex filter.

[0122] Specifically, the ends of the three-band (6-path) filters can be combined into a common resonator in the left filter section 220L and the right filter section 220R, respectively. A thin coupler, substantially coupling the 6-path, can be inserted and fixed to the inner side of the front end of the filter body 210 using a slit-joint method. This will be explained in detail below.

[0123] like Figures 4 to 6 As shown, the filter body 210 can be formed into a large cuboid shape in which the front and back thickness is approximately greater than the left and right width, and the vertical length is greater than the front and back thickness.

[0124] Meanwhile, in the filter body 210, a portion of the front corner of one end and the other end in the length direction can be set in a chamfered shape. At the same time, a calibration port can be provided at the other end in the length direction. In order to achieve vertical movement without interference from the horizontal mounting rod 650 in the structure of the phase shifter 600 described later, an avoidance part 205 cut in an arc shape can be integrally formed.

[0125] When two antenna RF modules 500 of an embodiment of the present invention are arranged in a vertical direction, one end of the avoidance portion 205 of the filter body 210 contacts each other, forming a semi-circular shape. This prevents interference when the horizontal mounting rod 650 of the phase shifter 600 moves up and down. The calibration ports of each filter body 210 are close to each other, which facilitates connection with the motherboard 120.

[0126] Figure 7 Figure 2 shows a cross-sectional view and a partially enlarged view illustrating the function of the support handle in the structure. Figure 8 This is a perspective view of an antenna RF module according to an embodiment of the present invention. Figure 9a and Figure 9b for Figure 8 An exploded perspective view of the front and rear sides. Figure 10 In order to be in Figure 8 The three-dimensional diagram used to illustrate the structure of the anti-electromagnetic interference wall ( Figure 10 (a) and the main view Figure 10 (b) Figure 11 In order to be in Figure 8 A three-dimensional diagram showing the RF filter section in the structure. Figure 12a and Figure 12b for Figure 11 The exploded three-dimensional diagrams of part (a) and part (b), Figure 13 For the purpose of explaining by Figure 10 A simplified diagram illustrating the interference effects caused by the anti-radio wave interference wall. Figure 14 To indicate in Figure 10 A side view of the structure of a common resonant part disposed inside the filter body of multiple RF filter sections in the structure. Figure 14 (a) part), concept map ( Figure 14 (b) and internal structure diagram ( Figure 14 (c) Figure 15 To leverage Figure 14 The frequency response diagram is revealed by the shared resonant section. Figure 16 To indicate Figure 14 A 3D diagram of the coupler in the structure. Figure 17 To present through Figure 16 The coupler is used to obtain an improved frequency response map of PIMD.

[0127] like Figures 7 to 17 As shown, the filter body 210 may also include filter tuning covers 280L and 280R, with multiple stamped portions 285 disposed on the filter tuning covers 280L and 280R, so that multiple resonators 215 (see reference) can be adjusted and disposed inside the cavities C1 and C2 of the left filter portion 220L and the right filter portion 220R. Figure 14 The spacing between the front ends of (a) is used to perform fine-tuning.

[0128] Tuning designers can perform fine-tuning by stamping multiple stamped portions 285 formed on the filter tuning covers 280L and 280R from the outside using specified stamping tools, thereby adjusting the spacing between the front ends of the multiple resonators 215.

[0129] This contrasts with existing structures that involve preparing metal tuning screws corresponding to each resonator and then rotating the screws. By eliminating the heavier metal tuning screws, a lightweight design of the product can be achieved. Furthermore, by preventing incomplete contact of the metal tuning screws in advance, the product can improve the PIMD problem, which is a deep-rooted issue.

[0130] The left filter section 220L and the right filter section 220R of the filter body 210 may also include a left filter cover 270L and a right filter cover 270R that cover the filter tuning covers 280L and 280R.

[0131] As described above, an input port 250 for electrical connection with the motherboard 120 via coaxial connectors 250A to 250D may be provided on the back side (rear side) of the filter body 210, and an output port 260 for powering the antenna element board 310 described later may be provided on the front side (front side) of the filter body 210.

[0132] The output port 260 serves as the starting point line before branching onto the plurality of transmission lines 361L, 361R, 362L, and 362R patterned on the front surface of the antenna element board 310. It can connect to a pair of input terminals (see reference) of the variable circuit pattern 360 formed in the phase shifter 600 described later. Figure 20 The attached diagrams (labeled "365L", "365R") indicate electrical connections.

[0133] On the other hand, such as Figures 8 to 10 As shown, the radiating element section 300 in AFEM500 may include an antenna element board 310 and a plurality of antenna array elements 330.

[0134] The number of antenna array elements 330 is not limited, but typically, three antenna elements can be arranged in the V-direction (Vertical direction) in an RF chain. Alternatively, as described in one embodiment of the invention, three more antenna elements (a total of six) can be arranged in the V-direction by using a phase shifter 600 to change the physical transmission length of multiple transmission lines 361L, 361R, 362L, 362R that branch from the non-digital input. This allows for the configuration within a single RF chain to exhibit symmetrical phase differences for the same phase plane and achieves the desired beamforming effect, which is also a matter of course.

[0135] Therefore, such as Figure 9aAs shown, the front surface of the antenna element board 310 may be printed with: a variable circuit pattern 360 extending from a pair of input terminals and having a power-off point at least once before branching into a plurality of transmission lines 361L, 361R, 362L, 362R; and a plurality of transmission lines 361L, 361R, 362L, 362R extending from the power-off point of the variable circuit pattern 360 to the upper left and lower left and upper right and lower right sides of the front surface of the antenna element board 310, respectively, and branching into output terminals corresponding to the number of antenna array elements 330.

[0136] In one embodiment of the present invention, the antenna RF module 500 uses an antenna element board 310 made of a conventional printed circuit board (PCB) of FR-4 material, and is printed with a variable circuit pattern 360 and multiple transmission lines 361L, 361R, 362L, 362R. However, the invention is not limited to this embodiment. In order to reduce insertion loss, the antenna element board 310 may also be made of a conventional plastic resin panel, and the variable circuit pattern 360 and multiple transmission lines 361L, 361R, 362L, 362R may be constructed using conductive terminals in the form of air strip lines.

[0137] An "X"-shaped mounting slot 363-1 to 363-6 may be provided on the front surface of the antenna element plate 310 as the location of the aforementioned output terminal or antenna array element 330. A balancer 320 for supporting patch or dipole type antenna patch elements (not marked in the figure) is provided in the mounting slot 363-1 to 363-6.

[0138] Although not shown in the figure, the weighing unit 320 may be provided with a feed pattern line of conductive material (not marked in the figure) so that after being electrically connected to the output terminals of each of the transmission lines 361L, 361R, 362L, and 362R, it can feed power to the multiple antenna array elements 330 disposed at its front end, thereby realizing the radiation of frequency beams such as dual-polarization beams.

[0139] Among them, such as Figure 9b As shown, the weighing unit 320 may include: a pair of feed support ends 321, which are intersected in an "X" shape and are fixed by being inserted into the mounting slots 363-1 to 363-6 formed on the antenna element plate 310; and an element support end (not shown), which is combined with the front end of the pair of feed support ends 321 for supporting the antenna array element 330 formed by the antenna element patch.

[0140] At the same time, such as Figures 7 to 10As shown, a radome anti-deformation protrusion 390 may be provided on the front surface of the antenna element plate 310. At least two radome anti-deformation protrusions 390 are provided, and the front end protrudes forward at least further than the antenna array element 330, supporting the back part of the radome panel 150.

[0141] In the event that an operator (meaning an operator who sets up the antenna device of the present invention) accidentally presses the front surface of the radome panel 150 backward, the radome anti-deformation protrusion 390 can prevent the antenna array element 330 from deforming due to contact.

[0142] Meanwhile, when the AFEM500 unit is combined with the motherboard 120 (for installation), the radome anti-deformation protrusion 390 can also serve as a handle for the assembly personnel to easily move by gripping it with their fingers.

[0143] Among them, such as Figure 7 , Figure 9a and Figure 9b As shown, the radome anti-deformation protrusion 390 may include: a support rod 391, the rear end of which is fixed to the antenna element board 310 by means of a fixing screw 395; and a height adjustment screw 392, which is disposed at the front end of the support rod 391 and supported on the back of the radome panel 150.

[0144] The radome anti-deformation protrusion 390 is integrally formed on the rear end of the support rod 391 by a screw fixing panel 393 with screw through holes 394, and at least one fixing screw 395 is stably fixed by means of the screw through holes 394 fastening to the antenna element plate 310.

[0145] On the other hand, in the event of separation caused by the assembly tolerance of the radome panel 150, the height adjustment screw 392 performs the function of releasing the separation caused by the aforementioned assembly tolerance by adjusting the rotation of the support rod 391.

[0146] In this way, from the assembly process to the setup process of the RF module 500 for the antenna, the assembly and operation personnel involved may cause deformation or position of the various structures of the antenna device, causing them to deviate from the design scope. Thus, the PIMD that may occur can be minimized in advance.

[0147] On the other hand, in an antenna device 100 according to an embodiment of the present invention, such as Figures 8 to 10As shown, the AFEM500 may also include an isolation side wall 370, which is combined with both ends of a plurality of radiating element sections 300 in the width direction and is divided and configured in a manner that minimizes electromagnetic interference with adjacent radiating element sections 300. A portion of the front end is cut in a concave-convex shape, while the rear end is joined without cutting to increase the contact area with the front end of the filter body.

[0148] like Figure 9a and Figure 9b As shown, the anti-electromagnetic interference wall 370 may include: a left anti-electromagnetic wall 370L, which is disposed and fixed to the left end of the antenna element board 310 in the width direction; and a right anti-electromagnetic wall 370R, which is disposed and fixed to the right end of the antenna element board 310 in the width direction.

[0149] This anti-electromagnetic wave interference wall 370 is made of metal material that can block electromagnetic waves. Therefore, it can not only prevent interference with the antenna beams of the surrounding AFEM500 to improve the beam pattern, but also improve the overall strength of the AFEM500.

[0150] Among them, such as Figure 9a and Figure 9b As shown, the anti-radio interference wall 370 may include: a mounting surface 371, at least a portion of which is bent in an overlapping manner on the back side of the ends of the plurality of radiating element sections 300 in the width direction, to engage with the front ends of the plurality of RF filter sections 200 of the plurality of radiating element sections 300; an anti-radio interference surface 373, which forms an uneven shape from the mounting surface 371 and bends forward; and a ground surface 372, which is bent from the mounting surface 371 toward the filter body 210 without the aforementioned cut.

[0151] That is, such as Figure 9a and Figure 9b As shown, in the anti-electromagnetic interference wall 370, the ground surface 372 protruding rearward relative to the antenna element plate 310 and the anti-electromagnetic wave surface 373 protruding forward can be configured as an integral type formed by bending the inner and outer ends of the mounting surface 371 which is parallel to the antenna element plate 310.

[0152] As described above, the anti-electromagnetic wave surface 373 of the anti-electromagnetic wave wall 370 can be repeatedly configured into a concave-convex shape by forming concave and convex portions with a spacing that matches the beam pattern characteristics, thereby improving the beam pattern characteristics of different embodiments.

[0153] Furthermore, unlike the aforementioned anti-electromagnetic wave surface 373, the ground plane 372 of the anti-electromagnetic wave interference wall 370 can be configured to have a non-convex / concave shape in order to improve the grounding function of the antenna element board 310.

[0154] Therefore, the mounting surface 371 of the anti-electromagnetic interference wall 370 can be closely attached to and combined with the back side of the left or right end of the antenna element board 310 in the width direction, and the grounding surface 372 of the anti-electromagnetic interference wall 370 can be bent and extended as far back as possible, further expanding the grounding functional surface of the antenna element board 310.

[0155] In the structure of the AFEM500 of the antenna device 100 according to an embodiment of the present invention, the anti-interference effect of the polarization beam of the anti-electromagnetic interference wall 370 is briefly explained as follows: Figure 13 Part (a) and Figure 13 As shown in section (b), the radiation beam radiated from one of the two AFEM500s side-by-side in the left-right H-direction (antenna array element 330A on the left in the figure) can be divided into an Inter Isolation polarization beam (refer to solid arrow) that does not reach the side of the adjacent AFEM500 (for example, antenna array element 330B on the right in the figure) but causes interference within itself; an Inter Co-pol Isolation polarization beam (single-dotted solid arrow) that reaches the antenna array element 330B of the adjacent AFEM500 and causes interference; and an Inter Cross-pol Isolation polarization beam (double-dotted solid arrow) that crosses the antenna array element 330B of the adjacent AFEM500 and causes interference with the antenna array element 330 of another adjacent AFEM500 (not shown).

[0156] In one embodiment of the antenna device 100 of the present invention, the AFEM500 can be shielded or reflected and returned by the anti-electromagnetic interference wall 370, thereby minimizing interference.

[0157] On the other hand, in the structure of AFEM500, the antenna element board 310 of the radiating element section 300 can be fixed to the front end face of the filter body 210 by fixing screws (not shown). However, fixing screws are not the only fixing element; in the anti-electromagnetic interference wall 370, the ground plane 372, which is the rear end, can also be fixed to the side part of the filter body 210 in the width direction by additional fixing screws.

[0158] Considering the polarization beam radiation characteristics data of these different embodiments, it is only natural that the specific shape of the anti-electromagnetic interference wall 370 can be designed.

[0159] At the same time, such as Figure 9a and Figure 9b As shown, interference avoidance holes 379 can be formed in the anti-electromagnetic interference wall 370. The interference avoidance holes 379 are used to allow interference-free hinge rotation (i.e., interference prevention) between the connection part and the vertical mounting rods 655U and 655D in the structure of the phase shifter 600 (described later) which are provided to realize the rotation of the variable switching panel 660.

[0160] As will be described later, preferably, the interference avoidance hole 379 is designed to be formed in the optimal position of the anti-electromagnetic interference wall 370, which takes into account the polarization beam radiation characteristics data. Therefore, it is also natural that the detailed shape design of the vertical mounting rods 655U and 655D can be changed.

[0161] In particular, the multiple vertical mounting rods 655U and 655D in the structure of the phase shifter 600 described later are arranged on the inner side of one of a pair of anti-electromagnetic interference walls 370 located at both ends of the antenna element board 310 in the width direction, and the movement of the vertical mounting rods 655U and 655D is not a complete vertical linear movement.

[0162] That is, the variable switching panel 660 of the phase shifter 600 rotates with reference to a predetermined rotation center point, and the vertical mounting rods 655U and 655D are connected to the rotation connection point 669 of the variable switching panel 660 to move. The upper end of the vertical mounting rods 655U and 655D (i.e., the rotation connection point 669) is referenced to the lower end and swings at a slight angle.

[0163] In this case, it is necessary to ensure the space required for the swinging movement of the vertical mounting rods 655U and 655D. Although it is possible to make the antenna element board 310 wider in the width direction, this would increase the left and right width of the antenna device, so it is not advisable. In order to prevent the size from being increased and to prevent the slight swinging movement of the vertical mounting rods 655U and 655D from being interfered with, as mentioned above, designing interference avoidance holes 379 in the anti-radio wave interference wall 370 is the best design solution.

[0164] However, from the beginning, since the anti-electromagnetic wave surface 373 at the front end of the anti-electromagnetic wave interference wall 370 is formed by a sufficient distance between the concave and convex parts, the distance between the concave and convex parts can replace the interference avoidance hole 379. Therefore, there is no need to design an additional interference avoidance hole 379.

[0165] On the other hand, such as Figure 14The plurality of RF filter sections 200 may include: the filter body 210, including a left filter section 220L and a right filter section 220R respectively disposed in a space (cavity) configuration on one side and the other side in the width direction; and a common resonant section (not shown in the figures, see reference numerals). Figure 14 (b) of the filter body 210 is configured at the ends of at least two multi-bands (three frequency bands (B1: 2100, B3: 1800, B7: 2600) in one embodiment of the present invention) of the left filter section 220L and the right filter section 220R of the filter body 210.

[0166] Among them, such as Figure 14 As shown, the common resonant section may include: a common resonator 218, disposed at the center of each cavity C1, C2 of the left filter section 220L and the right filter section 220R, which include the ends of the multi-frequency band; and a coupler 291 and a divider 292, electrically connected to the common resonator 218.

[0167] Based on the shared resonant section formed in this structure, it performs the function of transmitting and receiving signals related to multiple frequency bands.

[0168] For example, as a multi-band system, when the left filter section 220L and the right filter section 220R are formed by multiple resonators to construct a transmission path that selectively transmits signals in multiple frequency bands (in this invention, the three frequency bands (B1: 2100, B3: 1800, B7: 2600)), the common resonator 218 may include resonators 215 located at the input and output ends of the multiple frequency bands (for example, the three pairs of frequency bands).

[0169] More specifically, the coupler 291 can perform the function of extracting a portion of each signal from the left filter section 220L and the right filter section 220R, and the frequency divider 292 can perform the function of merging the two coupled signals and bundling them into a single output.

[0170] Among them, coupler 291, although shown in the attached figure (refer to...) Figure 14 (c) and Figure 16 The diagram shows a substrate-like structure to form a thickness that is inserted and fixed to the front end of the filter body 210 (described later) via a slit connection. However, it should be noted that the shape is not limited to a substrate-like structure. As long as the thickness is formed to be inserted and fixed to the front end of the filter body 210 via a slit connection without increasing the size of the filter body 210 itself, it is not necessary to exclude any shape.

[0171] That is, such as Figure 14The frequency divider 292 shown in section (c) and the coupler 291 can also be configured as conductive patterns arranged relative to the filter body 210.

[0172] More in detail, such as Figure 16 As shown, the coupler 291 can transmit and receive signals input to the output port section 260 described above via the main circuit (not labeled) through the ports 2 (Port 2: RF-B) and 5 (Port 5: RF-A) that are used to input signals in the frequency band selected by the common resonator 218. These signals are from the ports 1 (Filter B, i.e., left filter section 220L) and 4 (Filter A, right filter section 220R).

[0173] Furthermore, the coupler 291 can transmit the coupled signal to the calibration port via the frequency divider 292 through the coupling network circuit and the Wilkinson combiner circuit, which are respectively arranged in parallel in an adjacent manner.

[0174] According to the coupler 291 that performs this function, such as Figure 17 As shown in the frequency response diagram, even without coupling tuning, the coupling level can exhibit a stable coupling value within an error range of 20dB ± 1dB in the frequency band from 1.7GHz to 2.7GHz. Furthermore, the directivity value can be greater than 47dB in isolation level, and an excellent directivity value of more than 25dB can be ensured through the following formula.

[0175] [Number]Directivity=Isolation-Coupling

[0176] Furthermore, referring to Figure 16 The ground pin of the coupler 291, which is configured as a PCB type, can be connected to the filter body 210 in a coupled ground manner, thus avoiding unstable contact. Therefore, it has the advantage of significantly improving the PIMD problem.

[0177] For reference, although not shown in the attached figure, the grounding and filter body 210 of coupler 291 can be connected to the grounding pin in a coupled manner without direct contact by means of double-sided tape and PSR treatment.

[0178] The multiple RF filter sections 200 formed by this structure are constructed inside a filter body 210, which includes a Tripleband (6-path filter, coupler 291, and frequency divider 292), thereby creating advantages that maximize versatility and marketability.

[0179] Furthermore, in the antenna device 100 of one embodiment of the present invention, similar to AFEM500, when a left filter section 220L and a right filter section 220R are provided, even if a corresponding number of couplers 291 are not provided for each filter section 220L and 220R, the inner side of the front end of the filter body 210 can be installed by a slit connection, thus providing the advantage of preventing an increase in the size of the RF filter section 200.

[0180] Meanwhile, as described above, when a single number of couplers 291 are provided on the inner side of the front end of the filter body 210, not only can the structure of the main circuit and coupling network circuit associated with the left filter section 220L, the main circuit and coupling network circuit associated with the right filter section 220R, and the Wilkinson combiner circuit for calibration be very simple, but the frequency divider 292 can also be extended directly along the front end of the filter body 210 towards the calibration port side, which also provides manufacturing advantages.

[0181] According to the plurality of RF filter sections 200 as described above, such as Figure 15 As shown, individual frequency characteristics can be represented by a 6-path (transmission filter path).

[0182] Figure 18 To indicate in Figure 1 A perspective view of the configuration of a phase shifter that changes the physical length of a transmission line through a variable contact pattern set in the radiating element section. Figure 19a and Figure 19b To indicate in Figure 18 The structure retains only the front and rear three-dimensional views of the phase shifter in the state of using a single antenna RF module. Figure 20 For the purpose of illustrating the relative Figure 18 A transmission line structure diagram showing the physical transmission length change caused by the operation of a variable switching panel with a variable circuit pattern. Figure 21a and Figure 21b In order to be in Figure 18 The structure of the phase shifter shows an exploded perspective view of the front and rear sides of the drive unit.

[0183] like Figures 18 to 21b As shown, an antenna device 100 according to an embodiment of the present invention may further include a phase shifter 600. The phase shifter 600 achieves beamforming by changing the physical length of a plurality of transmission lines 361L, 361R, 362L, 362R patterned on the front surface of the antenna element board 310 to reflect a predetermined phase difference.

[0184] In this embodiment, the phase shifter 600 can represent the phase difference value with a left-right symmetrical slope for the same phase plane by means of the physical length variation of multiple transmission lines 361L, 361R, 362L, 362R.

[0185] The phase shifter 600 may include: a drive motor 610, fixed to the lower part of the internal space 110S of the radome 110, and generating rotational driving force electrically; a vertical movement guide 620, which converts the rotational driving force of the drive motor 610 into linear motion for vertical movement; a horizontal mounting rod 650, which receives linear movement force from the vertical movement guide 620 to form horizontal movement and move vertically; and a plurality of vertical mounting rods 665U, 665D, which are connected to the rotation connection point 669 of the variable switching panel 660, wherein one end of the variable switching panel 660 is connected to the horizontal mounting rod 650 in a vertical manner in the vertical direction, and the other end is respectively disposed at the power-off points of the plurality of transmission lines 361L, 361R, 362L, 362R in a switching ground manner.

[0186] like Figure 21a and Figure 21b As shown, the drive motor unit 610 may include: a drive motor (not shown) disposed inside the motor housing 611; a first pinion 612 engaged with both ends of the rotation shaft of the drive motor; and a second pinion 614 having a rotation shaft 613 arranged parallel to the rotation shaft of the first pinion 612, and meshing with the first pinion 612 at both ends of the rotation shaft 613.

[0187] A pair of linked second pinions 615L and 615R may be provided at both ends of the rotating shaft 613 of the second pinion 614, and a pair of linked bevel gears 616L and 616R may be configured in meshing with the pair of linked second pinions 615L and 615R, respectively, in a manner in which they have orthogonal rotating shafts.

[0188] A helical rod 617' with an external thread (not shown) formed on its outer peripheral surface can be shaft connected to the rotating shaft of a pair of linked bevel gears 616L and 616R. Furthermore, vertically moving guide blocks 617L and 617R with internal threads (not shown) that mesh with the external threads can be inserted into the outer peripheral surfaces of the pair of helical rods 617' respectively.

[0189] The motor housing 611 can be fixed to a pair of motor mounting brackets 622L and 622R fixed in the internal space 110S of the intervening antenna radome 110, and to the motor mounting brackets 622L, 622R, and 621 mounted on the front motor mounting bracket 621. The pair of motor mounting brackets 622L and 622R can be fastened to the front motor mounting bracket 621 by means of a plurality of fixing screws 637.

[0190] In the motor mounting brackets 622L, 622R, and 621, the up-down moving panel 630 in the structure of the up-down moving guide 620 described above is provided in front of the front motor mounting bracket 621 in a manner that allows it to move in the up-down direction.

[0191] In the vertical moving panel 630, a bracket 621 can be provided at the front motor to form a moving guide groove 623L, 623R that runs through the front and back direction and guides the vertical movement of a pair of vertical moving blocks 617L, 617R. This guide groove 623L, 623R can be linked with the pair of moving blocks 617L, 617R to move vertically. Furthermore, the moving guide groove 623L, 623R can be fixed to the vertical moving panel 630 by means of multiple fixing screws 635.

[0192] The vertically movable panel 630 in the structure of the vertically movable guide 620 is connected to a pair of vertically connecting rods 640 that connect with the aforementioned horizontal mounting rod 650.

[0193] If the drive motor 610 with this structure is running, the rotational driving force of the drive motor can be converted into vertical linear motion by the up-and-down moving guide 620, so that the horizontal mounting rod 650 is balanced left and right and moves in the up and down direction. When the multiple vertical mounting rods 655U and 655D connected in a manner that moves up and down in conjunction with the horizontal mounting rod 650 are moved, they can be rotated at a predetermined angle by the variable switching panel 660. The variable contact pattern 664R formed on the opposing surface of the variable switching panel 660 energizes (conducts) at least one de-energized point formed on the variable circuit pattern 360, thereby changing the physical length of the multiple transmission lines 361L, 361R, 362L, and 362R.

[0194] Mobile data traffic is increasing exponentially. In response, global mobile communication companies are competing to increase the mid-band capacity of 1.8GHz and 2.1GHz frequency division duplex (FDD).

[0195] As a solution to increase capacity, the 5G FDD Dual Band Massive MIMO 32TRX RU has attracted worldwide attention. However, as mentioned above, there are two important issues that limit its commercialization.

[0196] The first problem is the occurrence of PIMD. PIMD is a fatal problem that reduces receiver sensitivity, severely compromising uplink coverage of a base station.

[0197] The second problem is the use of 128 filters, each twice the size of a TDD filter, making the FDDRU very heavy and extremely large. This also hinders its commercialization.

[0198] An antenna device 100 according to an embodiment of the present invention provides a highly innovative commercial solution that blocks PIMD at its source at the hardware level and reduces size and weight.

[0199] As described above, its starting point is the modular design of the RF filter section 200 and the radiating element section 300. Compared with the existing arrangement structure in which multiple antenna array elements are arranged in an HV manner on the antenna element board, the antenna device 100 of an embodiment of the present invention has the following four advantages, and includes the following revolutionary technology based on the applicant's extensive experience.

[0200] -Distruptive Technology(Extremely Low PIMD, The Lightest Ever)

[0201] Filter tuning technology allows for filter tuning even without the use of screws. To achieve this, multiple stamped panels can be provided on the filter cover (not shown) to allow for fine-tuning at positions corresponding to the front ends of each resonator, and this fine-tuning can be performed automatically using an automatic stamping tool. Furthermore, all structural elements of the RF filter section 200 are welded to prevent incomplete contact between metals, thus eliminating the fundamental reason for PIMD (pivot-in-displacement) and making the RF filter section 200 lighter than before.

[0202] Furthermore, in the antenna device 100 of one embodiment of the present invention, a unique filter cover bonding technology is used to hermetically bond the filter body 210 and the filter cover without the use of screws. Therefore, the weight of the PIMD and RF filter section 200 can be greatly reduced, and in particular, the advantages of being thinner and lighter are provided by embodying a quad-flex filter.

[0203] Meanwhile, in the final step of combining the RF filter section 200 and the radiating element section 300, the PIMD can be directly assembled without contacts or additional connectors, thus eliminating the need for additional connections.

[0204] -Detachable Architecture (The Highest Production Yield, Each ModuleReplaceable)

[0205] While the order can be changed, the existing method of assembling the antenna element array (radiating element section) and RF filter section one by one has the problem of making it almost impossible to find the location where PIMD occurs. Even if the location of PIMD is found, improving or modifying it remains a difficult problem to solve.

[0206] However, the modular design of the antenna device 100 in one embodiment of the present invention can be assembled from detachable modular types such as Lego bricks, thereby epoch-makingly improving production yield.

[0207] -Scalable Architecture (Reducing Lead Time, Easy Response to FrequencyVariance, Compatible with Various Antenna Architecture)

[0208] Furthermore, the modular design described above allows for the creation of all types of FDD Massive MIMO RUs using only three types of modules (triple band type), thus providing scalability and compatibility. It also facilitates shorter read times and better responses to frequency variations.

[0209] -Dual Channel Phase Shifter(for Hybrid Beamforming(Optional))

[0210] Meanwhile, as an optional component, the dual-channel phase shifter 600 for hybrid beamforming can support up to 384 antenna element architectures. This will bring the advantages of being smaller, lighter, and very cost-effective than existing products.

[0211] That is, the AFEM500, which is a modular design of the antenna device 100 as an embodiment of the present invention, offers the advantages of greatly improved PIMD removal, product lightweighting, separation and scalability, and versatility based on dual-channel phase converters.

[0212] The antenna device 100 according to an embodiment of the present invention has been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the above-described embodiment, and it is natural that those skilled in the art can implement it in various modifications and equivalents. Therefore, the true scope of protection of the present invention is specified by the claims.

[0213] Industrial availability

[0214] The present invention provides an antenna radio frequency module and an antenna device including the present invention that not only minimizes radio wave interference between modules and prevents indirect coupling of beams radiated from the radiating element, but also improves the PIMD problem.

Claims

1. A radio frequency module for an antenna, characterized in that, include: Multiple RF filter sections, including filter bodies that are elongated in the vertical direction; Multiple radiating element sections are formed with a length greater than that of the multiple RF filter sections and are fixed in a detachable manner for electrical connection to the front ends of each of the multiple RF filter sections; and The anti-electromagnetic interference wall is combined with both ends of the plurality of radiating element sections in the width direction and is divided into sections to minimize the electromagnetic interference between adjacent radiating element sections.

2. The radio frequency module for antennas according to claim 1, characterized in that, The front portion of the anti-electromagnetic interference wall is cut in a concave-convex shape. The rear end of the anti-electromagnetic interference wall bends and extends toward the filter body.

3. The radio frequency module for antennas according to claim 2, characterized in that, The anti-electromagnetic interference wall includes: The mounting surface, at least a portion of which is bent in an overlapping manner, is formed on the back side of the width direction end of each of the plurality of radiating element portions to engage with the front end of each of the plurality of RF filter portions of each of the plurality of radiating element portions; The anti-electrode surface, as the front end portion, forms the concave-convex shape from the mounting surface and bends forward; and The rear end, which is grounded, is bent from the mounting surface to the filter body side without the cutting.

4. The radio frequency module for antennas according to claim 1, characterized in that, The plurality of radiating elements include: The antenna element board is fixed to the front end of the filter body via the anti-electromagnetic interference wall, and is patterned with a variable circuit pattern electrically connected to a pair of input terminals and a plurality of transmission lines branching from the variable circuit pattern into at least one and extending in such a way as to be electrically connected to a plurality of output terminals that are respectively configured as a pair. The weighing unit is located at a position corresponding to the plurality of output terminals of the antenna element board and is arranged in a cross-shaped configuration; and Multiple antenna array elements, combined with the front end of the balancer section, perform beam output function of at least one polarization in dual polarization.

5. The radio frequency module for antennas according to claim 4, characterized in that, Interference avoidance holes are formed in the anti-electromagnetic interference wall to prevent interference with the connection between the wall and the vertical mounting rod, which is provided for rotating the variable switching panel for the variable circuit pattern contacts.

6. The radio frequency module for antennas according to claim 4, characterized in that, The switching device includes a pair of feed support ends, which are fixed to an "X"-shaped setting slot formed on the antenna element plate and have a feed pattern line made of conductive material.

7. The radio frequency module for antennas according to claim 6, characterized in that, The balancer section also includes a component support end, which is combined with the front end of the pair of feed support ends to support the antenna array components.

8. The radio frequency module for antennas according to claim 4, characterized in that, It also includes at least one radome anti-deformation protrusion, which is disposed on the antenna element plate and is configured to support and protect the plurality of antenna array elements on the back of the front radome panel.

9. The radio frequency module for antennas according to claim 8, characterized in that, The radome anti-deformation protrusion includes: Support rod, fixed to the antenna element board; and A height adjustment screw is located at the front end of the support rod to release the separation caused by the assembly tolerance of the radar dome panel.

10. An antenna device, characterized in that, include: An antenna radio frequency module includes multiple RF filter sections and multiple radiating element sections. The multiple RF filter sections include filter bodies that are elongated in the vertical direction. The multiple radiating element sections are formed with a length greater than that of the multiple RF filter sections and are fixed in a detachable manner so as to be electrically connected to each front end of the multiple RF filter sections. The radome is box-shaped with an opening at the front to accommodate the RF module for the antenna within the internal space. as well as The radar dome panel covers the front end of the opening of the antenna dome and protects the RF module for the antenna from the outside. The radio frequency module for the antenna also includes an anti-electromagnetic interference wall, which is combined with both ends of the plurality of radiating element sections in the width direction and is divided and configured to minimize the electromagnetic interference between the radiating element sections and the adjacent radiating element sections.

11. The antenna device according to claim 10, characterized in that, A decoupling pattern of a predetermined shape is formed on the back side of the radome panel to minimize indirect coupling between the plurality of antenna elements.

12. The antenna device according to claim 11, characterized in that, In the portions that are set in a diamond shape and a honeycomb shape, the decoupling pattern portion is formed in an "X" shape.

13. The antenna device according to claim 10, characterized in that, The radiating element portion of the antenna radio frequency module is provided with at least one radome anti-deformation protrusion to support the back of the radome panel.

14. The antenna device according to claim 10, characterized in that, The front portion of the anti-electromagnetic interference wall is cut in a concave-convex shape. The rear end of the anti-electromagnetic interference wall bends and extends toward the filter body.

15. The antenna device according to claim 14, characterized in that, The anti-electromagnetic interference wall includes: The mounting surface, at least a portion of which is bent in an overlapping manner, is formed on the back side of the width direction end of each of the plurality of radiating element portions to engage with the front end of each of the plurality of RF filter portions of each of the plurality of radiating element portions; The anti-electrode surface, as the front end portion, forms the concave-convex shape from the mounting surface and bends forward; and The rear end, which is grounded, is bent from the mounting surface to the filter body side without the cutting.

16. The antenna device according to claim 10, characterized in that, The plurality of radiating elements include: The antenna element board is fixed to the front end of the filter body via the anti-electromagnetic interference wall, and is patterned with a variable circuit pattern electrically connected to a pair of input terminals and a plurality of transmission lines branching from the variable circuit pattern into at least one and extending in such a way as to be electrically connected to a plurality of output terminals that are respectively configured as a pair. The weighing unit is located at a position corresponding to the plurality of output terminals of the antenna element board and is arranged in a cross-shaped configuration; and Multiple antenna array elements, combined with the front end of the balancer section, perform beam output function of at least one polarization in dual polarization.

17. The antenna device according to claim 16, characterized in that, It also includes a phase shifter comprising a variable switching panel printed with a variable contact pattern for energizing at least one de-energized point contact formed on the variable circuit pattern, and a vertical mounting rod for rotating the variable switching panel. The anti-electromagnetic interference wall is provided with interference avoidance holes to prevent interference with the vertical mounting rod.

18. The antenna device according to claim 16, characterized in that, The switching device includes a pair of feed support ends, which are fixed to an "X"-shaped setting slot formed on the antenna element plate and have a feed pattern line made of conductive material.

19. The antenna device according to claim 19, characterized in that, The balancer section also includes a component support end, which is combined with the front end of the pair of feed support ends to support the antenna array components.

20. The antenna device according to claim 16, characterized in that, It also includes at least one radome anti-deformation protrusion, which is disposed on the antenna element plate and is configured to support and protect the plurality of antenna array elements on the back of the front radome panel.

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