Antenna modules for wireless power transmission and reception

Abstract

An antenna module for wireless power transmission and reception is provided, in which an inner loop pattern is arranged within the inner circumference of an outer loop coil to provide a constant charging recognition rate regardless of position. The provided antenna module for wireless power transmission and reception includes: a base substrate; a first antenna disposed on an upper surface of the base substrate and including a first radiation pattern forming a first loop; and a second antenna stacked on the upper surface of the base substrate and including a coil wound along the outer circumference of the first loop to form a second loop.

Description

Technical Field

[0001] The present invention relates to an antenna module for wireless power transmission and reception, and more particularly, to an antenna module for wireless power transmission and reception, which is capable of performing wireless power transmission and reception. Background Art

[0002] With the development of communication technology, near-field communication functions and wireless power reception (or wireless charging) functions have been applied to mobile terminals. That is, mobile terminals use short-range (e.g., NFC) communication functions to transmit and receive data to and from different electronic devices, and use wireless power reception (or wireless charging) functions to charge built-in batteries.

[0003] In recent years, research has been conducted on the application of technology for charging wearable devices using mobile terminals. Mobile terminals and wearable devices that can charge different mobile terminals are already available on the market.

[0004] Therefore, various antenna structures have been studied so that the mobile terminal not only provides wireless power reception and wireless power transmission functions but also improves charging efficiency for wearable devices. Summary of the Invention

[0005] Technical issues

[0006] In view of the above-mentioned circumstances, an object of the present disclosure is to provide an antenna module for wireless power transmission and reception, which is capable of providing a fixed charging recognition rate regardless of its position by disposing an inner loop pattern in an inner circumferential area of ​​an outer loop coil.

[0007] Solutions to the problem

[0008] To achieve the above-mentioned objectives, according to one aspect of the present disclosure, an antenna module for wireless power transmission and reception is provided, the module comprising: a base substrate; a first antenna having a first radiation pattern, the first radiation pattern being arranged on the upper surface of the base substrate and forming a first loop; and a second antenna, the second antenna being stacked on the upper surface of the base substrate and having a coil, the coil being wound along the outer circumference of the first loop to form a second loop.

[0009] The antenna module may further include a first cover layer interposed between the first radiation pattern and the second antenna and having an opening formed in a region overlapping the first connection electrode of the first radiation pattern.

[0010] The antenna module may further include a connection pattern having a line width greater than line widths of the second antenna and the first radiation pattern and having a first end portion disposed in the accommodation space.

[0011] The antenna module may further include a first cover layer interposed between the first radiation pattern and the second antenna and having an opening formed in a region overlapping the accommodation space.

[0012] Beneficial effects

[0013] According to the present disclosure, in an antenna module for wireless power transmission and reception, an inner loop pattern is provided within the inner circumference of an outer loop coil. Thus, it is possible to provide a constant charging recognition rate across the entire area of ​​the antenna module for wireless power transmission and reception.

[0014] In particular, unlike related art antenna modules for wireless power transmission and reception that have a free space in their center, the antenna module for wireless power transmission and reception according to the present disclosure has a small device disposed in its center, but the overlap area between the antenna of the small device and the antenna module for wireless power transmission and reception is increased. This can potentially improve the charging recognition rate.

[0015] Furthermore, in an antenna module for wireless power transmission and reception, the ends of the inner loop pattern extend toward the center of the loop and serve as connecting electrodes within the loop. This improves the antenna's charging recognition rate and the coupling strength between the inner loop pattern and the outer loop coil without increasing the antenna area.

[0016] In addition, in an antenna module for wireless power transmission and reception, a connection electrode is formed with a larger line width than an outer loop coil, which is formed by the outer loop coil. This increases the overlap area between the inner loop pattern and the outer loop coil, thereby increasing the coupling strength between the inner loop pattern and the outer loop coil.

[0017] Furthermore, in an antenna module for wireless power transmission and reception, one end of an outer loop coil is disposed within an inner circumferential region of an inner loop pattern, and the outer loop coil and the inner loop pattern are connected by soldering in the inner region, rather than by connecting via the end of the outer loop coil. Consequently, the coupling strength can be further increased compared to when the end of the outer loop coil is connected to the inner loop pattern.

[0018] In addition, in an antenna module for wireless power transmission and reception, a connection pattern can be formed to have a larger line width than the outer loop coil, to which the outer loop coil is connected. This can improve the coupling strength between the inner loop pattern and the outer loop coil.

[0019] Furthermore, in an antenna module for wireless power transmission and reception, a connection pattern connected to an outer loop coil is disposed within a housing space within an inner loop pattern. Furthermore, the area of ​​the connection pattern disposed within the housing space and the end of the outer loop coil are connected to each other by welding. This improves the antenna's charging recognition rate and the coupling strength between the inner loop pattern and the outer loop coil without increasing the antenna area.

[0020] In addition, in the antenna module for wireless power transmission and reception, the inner loop pattern is arranged on the inner circumference of the outer loop coil, and the outer loop coil and the inner loop pattern are made to operate as independent antennas. Therefore, a fixed charging recognition rate is ensured in all areas of the antenna module for wireless power transmission and reception. In addition, unlike the antenna module for wireless power transmission and reception in the related art that has a vacant space in the center part, although a small-sized device is arranged in the center part of the antenna module for wireless power transmission and reception according to the present disclosure, the corresponding overlapping area of ​​the antenna of the small-sized device and the antenna module for wireless power transmission and reception is increased. Therefore, the effect of possibly improving the charging recognition rate can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a view for describing an antenna module for wireless power transmission and reception according to an embodiment of the present disclosure.

[0022] Figure 2 is a view illustrating a configuration of an antenna module for wireless power transmission and reception according to a first embodiment of the present disclosure.

[0023] Figures 3 to 5 is used to describe Figure 2 A view of the first antenna in the.

[0024] Figure 6 is used to describe Figure 2 A view of the second antenna in the .

[0025] Figure 7 is a view that describes a structure where Figure 2 The first antenna and the second antenna in the embodiment are stacked on top of each other.

[0026] Figures 8 to 11 is a view illustrating a modified example of the antenna module for wireless power transmission and reception according to the first embodiment of the present disclosure.

[0027] Figure 12 is a view illustrating a configuration of an antenna module for wireless power transmission and reception according to a second embodiment of the present disclosure.

[0028] Figures 13 to 15 is used to describe Figure 12 A view of the first antenna in the.

[0029] Figure 16 is used to describe Figure 12 A view of the second antenna in the .

[0030] Figure 17 is a view that describes a structure where Figure 12 The first antenna and the second antenna in the embodiment are stacked on top of each other.

[0031] Figures 18 to 21 is a view for describing a modified example of the antenna module for wireless power transmission and reception according to the second embodiment of the present disclosure. DETAILED DESCRIPTION

[0032] The most preferred embodiments of the present disclosure will be described below with reference to the accompanying drawings in sufficient detail to enable those skilled in the art to which the present disclosure applies to practice the present disclosure without undue experimentation. It should be noted that when a reference numeral is assigned to a component in the accompanying drawings, the same component, even if shown in different drawings, is still represented by the same reference numeral. In addition, specific descriptions of well-known configurations or functions associated with the present disclosure will be omitted if it is determined that they would obscure the nature and key points of the present disclosure.

[0033] It should be noted that when a reference numeral is assigned to a constituent element in the drawings, the same constituent element is denoted by the same reference numeral although it is shown in different drawings.

[0034] Furthermore, specific descriptions of well-known configurations or functions associated with the present disclosure will be omitted when it is determined to obscure the nature and gist of the present disclosure.

[0035] Furthermore, when a component is described as being disposed or formed “on the upper surface” or “on the lower surface” of a different component, it should be interpreted as being in contact with the different component. Furthermore, when a component is described as being disposed or formed “above / above the upper surface” or “below / below the lower surface” of a different component, it should be interpreted as being connected to the different component via a third component interposed therebetween.

[0036] Reference Figure 1 The antenna modules 100 and 200 for wireless power transmission and reception are antennas installed in an electronic device 10 having a wireless power transmission (wireless charging) function. As an example, the electronic device 10 installed with the antenna module 100 or 200 for wireless power transmission and reception is a smartphone, a tablet computer, a notebook computer, etc.

[0037] The antenna module 100 for wireless power transmission and reception is installed in the electronic device 10 and receives wireless power from a charger, thereby charging the battery of the electronic device 10. In addition, the antenna module 100 for wireless power transmission and reception transmits wireless power to a charging target device 20, such as a smartphone, wireless headphones, and a small wearable device, thereby charging the battery of the charging target device 20.

[0038] Typically, the antenna installed in the electronic device 10 is a wireless power receiving antenna that receives wireless power. The wireless power receiving antenna is manufactured to receive wireless power. Therefore, when wireless power is transmitted (i.e., battery sharing charging is performed), the charging recognition rate of the charging target device is reduced, or the wireless charging efficiency is reduced.

[0039] Therefore, the purpose of the antenna modules 100 and 200 for wireless power transmission and reception according to the first and second embodiments of the present disclosure, respectively, is to couple the coil antenna and the printed circuit board antenna to each other. This advantageously improves both the charging recognition rate and the wireless charging efficiency when transmitting wireless power (i.e., when performing wireless charging or battery sharing charging).

[0040] Reference Figure 2 , the antenna module 100 for wireless power transmission and reception according to the first embodiment of the present disclosure is configured to include a first antenna 110 constituting an inner loop pattern and a second antenna 120 constituting an outer loop coil.

[0041] The first antenna 110 and the second antenna 120 are coupled to each other (or stacked one above the other), and thus the antenna pattern of the first antenna 110 is arranged in the central portion (i.e., the inner peripheral area) of the second antenna 120. Therefore, the first antenna 110 constitutes the inner loop pattern of the antenna module 100 for wireless power transmission and reception, and the second antenna 120 constitutes the outer loop coil of the antenna module 100 for wireless power transmission and reception.

[0042] Therefore, the antenna module 100 for wireless power transmission and reception has an extended area (or length) for transmitting and receiving wireless power, thereby increasing wireless charging efficiency and a charging recognition rate of a charging target device.

[0043] Reference Figures 3 to 5 The first antenna 110 is a printed circuit substrate type antenna, and is configured to include a base substrate 111 , a first radiation pattern 112 , and a second radiation pattern 113 .

[0044] The base substrate 111 may be formed of a thin film substrate, such as a film, a sheet, or a thin film substrate. The base substrate 111 may be a flexible printed circuit substrate (FPCB). As an example, the base substrate 111 is a polypropylene (PP) sheet. The base substrate 111 is not limited to those mentioned above. Any substrate that is a thin film substrate capable of forming a coil pattern (the coil pattern constituting an antenna) may be used as the base substrate 111 in various ways.

[0045] The first radiating pattern 112 is provided on the upper surface of the base substrate 111. The first radiating pattern 112 forms a loop by winding multiple times around the center point of the base substrate 111 on the upper surface of the base substrate 111. In this case, the first radiating pattern 112 is configured with multiple radiating lines, forming a through-path TP through which the first connection pattern CP1 passes. A through-path is defined as an area formed by spacing these radiating lines apart. For example, in the area forming the first through-path TP, the first radiating pattern 112 shares a second radiating pattern 113 provided on the rear surface of the base substrate 111 via a through-hole, forming a loop.

[0046] The first end of the first radiation pattern 112 bends from the outermost portion of the loop toward the inner portion of the loop. The first end of the first radiation pattern 112 is disposed within the loop and forms the first connection electrode SP1. For example, the inner portion of the loop is defined as the center point of the loop formed by the first radiation pattern 112. The inner portion of the loop can be defined as the region between the outermost and innermost portions of the loop formed by the first radiation pattern 112.

[0047] As an example, see Figure 3 The first radiation pattern 112 is wound seven times around a virtual winding axis perpendicular to the base substrate 111 at the center point of the base substrate 111, forming a loop having 1 to 7 turns. The first end of the first radiation pattern 112 bends toward the winding axis at the seventh turn, the outermost portion of the loop, and is positioned adjacent to the second turn of the loop. Therefore, the first end of the first radiation pattern 112 is positioned within the loop.

[0048] The first connection electrode SP1 is formed on the first end of the first radiating pattern 112. The first connection electrode SP1 represents the portion of the first radiating pattern 112 that bends at the outermost portion of the loop to be positioned within the loop. The first connection electrode SP1 is a region extending from the first end of the first radiating pattern 112 to the bent portion of the first radiating pattern 112 and formed into a predetermined plate-like shape. In this case, the first connection electrode SP1 is formed to have a line width W1 that is greater than the line width W2 of the first radiating pattern 112. As an example, the first connection electrode SP1 is connected to one end of the coil constituting the second antenna 120 by soldering. As an example, in the region where the first connection electrode SP1 is provided, the first radiating pattern 112 shares a second radiating pattern 113 provided on the rear surface of the base substrate 111 via a through-hole, forming a loop.

[0049] In this manner, in the antenna module 100 for wireless power transmission and reception according to the first embodiment of the present disclosure, the first end portion of the first radiation pattern 112 is bent from the outermost portion of the first radiation pattern 112 toward the center point. As a result of this extension, the plate-shaped first connection electrode SP1 is formed to have a line width greater than the line width of the first radiation pattern 112. Therefore, the plate-shaped first connection electrode SP1 is disposed within the loop formed by the first radiation pattern 112. Consequently, the area of ​​contact or coupling with the second antenna (coil) 120 can be increased, thereby increasing the coupling strength between the first antenna 110 and the second antenna 120.

[0050] The second radiation pattern 113 is provided on the lower surface of the base substrate 111. The second radiation pattern 113 is formed into a loop so as to wind around the center point of the base substrate 111 on the lower surface of the base substrate 111 a plurality of times.

[0051] The second radiating pattern 113 is positioned to overlap with the first radiating pattern 112, with the base substrate 111 positioned between the second and first radiating patterns. The second radiating pattern 113 is connected to the first radiating pattern 112 via a through-hole (or through-hole), thereby forming an inner loop pattern for the antenna module 100 for wireless power transmission and reception. In this case, the second radiating pattern 113 forms a detour around the first radiating pattern 112 in the region corresponding to the through-path TP and the first connection electrode SP1.

[0052] The first antenna 110 may further include a third radiation pattern 114 formed on the upper surface of the base substrate 111. The third radiation pattern 114 is formed as a loop so as to wind along the outer circumference of the base substrate 111 on the upper surface of the base substrate 111. In this case, as an example, the third radiation pattern 114 is a radiator that resonates in a frequency band for near field communication (e.g., an NFC frequency band).

[0053] The first antenna 110 may also include different radiation patterns that resonate to the MST frequency band. The third radiation pattern 114 of the first antenna 110 may be configured as a radiator that resonates to the MST frequency band.

[0054] The first antenna 110 may further include a plurality of terminal patterns for connecting the antenna module 100 for wireless power transmission and reception to a circuit substrate built into the mobile terminal.

[0055] Multiple terminal patterns are separately arranged on the upper and lower surfaces of the base substrate 111. One pair of these terminal patterns is connected to one end of the inner loop pattern formed by the first radiating pattern 112 and the second radiating pattern 113, and to one end (i.e., second end EP2) of the second antenna 120 (i.e., outer loop coil) arranged on the upper surface of the base substrate 111. Another pair of terminal patterns is connected to both ends of the third radiating pattern 114.

[0056] As an example, see Figures 3 to 5 , the first antenna 110 includes terminal patterns T1 to T4 formed on an upper surface of a base substrate 111 , and terminal patterns T1 ′ to T4 ′ formed on a lower surface of the base substrate 111 .

[0057] Terminal patterns T1 and T1' are disposed on the upper and lower surfaces of base substrate 111, respectively. All or a portion of terminal pattern T1 overlaps terminal pattern T1'. Terminal patterns T1 and T1' are connected to each other via through-holes in the overlapping region, with base substrate 111 interposed between terminal patterns T1 and T1'.

[0058] The first end portion of the terminal pattern T1' and the second end portion of the terminal pattern T1' are respectively arranged to overlap with the terminal pattern T1 and the second connection pattern CP2 provided on the upper surface of the base substrate 111. The terminal pattern T1' and the second connection pattern CP2 are connected to each other via a through hole in the overlapping region, with the base substrate 111 interposed therebetween.

[0059] Terminal patterns T2 and T2' are disposed on the upper and lower surfaces of base substrate 111, respectively. All or a portion of terminal pattern T2 overlaps terminal pattern T2'. Terminal patterns T2 and T2' are connected to each other via through-holes in the overlapping region, with base substrate 111 interposed between terminal patterns T2 and T2'.

[0060] The first end portion of the terminal pattern T2' and the second end portion of the terminal pattern T2' are respectively arranged to overlap with the terminal pattern T2 and the first connection pattern CP1 provided on the upper surface of the base substrate 111. The terminal pattern T2' and the first connection pattern CP1 are connected to each other via a through-hole in the overlapping region, with the base substrate 111 interposed therebetween.

[0061] The terminal patterns T1 and T1' are connected to the second end EP2 of the second antenna 120, and the terminal patterns T2 and T2' are connected to the second end of the first radiation pattern 112. In this case, the first end EP1 of the second antenna 120 is connected to the first end of the first radiation pattern 112 (ie, the first connection electrode SP1).

[0062] Therefore, the terminal patterns T1 and T1' serve as terminals for connecting the antenna module 100 for wireless power transmission and reception to an external circuit, and the inner loop pattern (i.e., the first radiation pattern 112 and the second radiation pattern 113) and the outer loop coil (the coil of the second antenna 120) constitute the antenna module 100.

[0063] Terminal patterns T3 and T3' are disposed on the upper and lower surfaces of base substrate 111, respectively. All or a portion of terminal pattern T3 overlaps terminal pattern T3'. Terminal patterns T3 and T3' are connected to each other via through-holes in the overlapping region, with base substrate 111 interposed between terminal patterns T3 and T3'.

[0064] The first end of the terminal pattern T3' and the second end of the terminal pattern T3' are arranged so as to overlap with the first end of the terminal pattern T3 and the third radiant pattern 114, respectively, which are arranged on the upper surface of the base substrate 111. The terminal pattern T3' and the third radiant pattern 114 are connected to each other via a through-hole in the overlapping region, with the base substrate 111 interposed therebetween. In this case, as an example, the first end of the third radiant pattern 114 is the end located at the innermost portion of the loop formed by the third radiant pattern 114.

[0065] Terminal patterns T4 and T4' are disposed on the upper and lower surfaces of base substrate 111, respectively. All or a portion of terminal pattern T4 overlaps terminal pattern T4'. Terminal patterns T4 and T4' are connected to each other via through-holes in the overlapping region, with base substrate 111 interposed between terminal patterns T4 and T4'.

[0066] The first end of terminal pattern T4' and the second end of terminal pattern T4' are arranged to overlap with the second end of terminal pattern T4 and third radiant pattern 114, respectively, which are arranged on the upper surface of base substrate 111. Terminal pattern T2' and third radiant pattern 114 are connected to each other via a through-hole in the overlapping region, with base substrate 111 interposed between terminal pattern T2' and third radiant pattern 114. In this case, as an example, the second end of third radiant pattern 114 is the end located at the outermost portion of the loop formed by third radiant pattern 114.

[0067] In this manner, the terminal patterns T3 and T3' are connected to the first end of the third radiation pattern 114, and the terminal patterns T4 and T4' are connected to the second end of the third radiation pattern 114. Therefore, the terminal patterns T3 and T3', and the terminal patterns T4 and T4' serve as terminals for connecting the near field communication antenna constituted by the third radiation pattern 114 to an external circuit.

[0068] The second antenna 120 is an outer loop coil of the antenna module 100 for wireless power transmission and reception, and is configured as a coil-type antenna stacked on the upper surface (i.e., the base substrate 111) of the first antenna 110. In this case, both ends of the second antenna 120 are connected to the inner loop pattern and the second connection pattern CP2 of the first antenna 110, respectively, by welding or the like.

[0069] Reference Figure 6 The second antenna 120 is configured as a loop-type coil wound multiple times around a virtual winding axis. The first end EP1 of the second antenna 120 extends from the innermost portion of the loop toward the virtual winding axis and is positioned at the center of the loop. The first end EP1 of the second antenna 120 may be positioned adjacent to the center of the loop.

[0070] The first end portion EP1 of the second antenna 120 is disposed on the inner circumference of the loop in which the coil is formed, and forms a second connection electrode SP2, which is disposed so as to overlap with the first connection electrode SP1 of the first antenna 110. The second end portion EP2 of the second antenna 120 is disposed on the outer circumference of the loop in which the coil is formed, and is disposed so as to overlap with the second connection pattern CP2 of the first antenna 110.

[0071] Reference Figure 7 The second antenna 120 is disposed on the upper surface of the first antenna 110. The second connection electrode SP2 (including the first end portion EP1 of the second antenna 120) is stacked on top of the first connection electrode SP1 of the first radiation pattern 112 and connected to the first connection electrode SP1 by welding or the like.

[0072] In this case, the first end portion EP1 of the second antenna 120 is disposed adjacent to the center point of the first radiation pattern 112 (i.e., the center point of the base substrate 111), and is disposed further inward than the innermost pattern of the loop formed with the first radiation pattern 112. In other words, the first end portion EP1 of the second antenna 120 is disposed in the inner peripheral region of the loop formed with the inner loop pattern.

[0073] Therefore, the first end portion EP1 of the second antenna 120 does not overlap with the first connection electrode SP1, and a portion of the second connection electrode SP2 overlaps with the first connection electrode SP1. The second antenna 120 is connected to the first connection electrode SP1 at its overlapping region by welding or the like.

[0074] In this manner, in the antenna module 100 for wireless power transmission and reception according to the first embodiment of the present disclosure, the first end portion EP1 of the second antenna 120 extends toward the center point of the inner loop pattern (i.e., the first radiation pattern 112) and is positioned within the inner circumference of the inner loop pattern. Furthermore, the second antenna 120 is connected by welding or the like at the region where it overlaps with the first connection electrode SP1 of the first radiation pattern 112 (i.e., the second connection electrode SP2). This increases the coupling strength between the first antenna 110 and the second antenna 120.

[0075] In other words, in the antenna module 100 for wireless power transmission and reception according to the first embodiment of the present disclosure, the inner loop pattern (i.e., the first connection electrode SP1 of the first radiation pattern 112) is connected to the second antenna 120 by soldering in the inner region (not in the first end portion EP1 of the second antenna 120). Therefore, compared to when the first end portion EP1 of the second antenna 120 is connected to the inner loop pattern, the coupling strength between the first antenna 110 and the second antenna 120 is further increased.

[0076] The second end EP2 of the second antenna 120 is connected to the second connection pattern CP2 by welding or the like. The second end EP2 of the second antenna 120 is arranged so as to extend from the outermost portion of the loop forming the coil toward the second end of the second connection pattern CP2. The second end EP2 of the second antenna 120 is arranged so as to overlap with the second connection pattern CP2 and is connected to the second connection pattern CP2 by welding or the like.

[0077] To increase the coupling strength between the first antenna 110 and the second antenna 120, the second antenna 120 can be arranged so that a portion located further inward than the second end portion overlaps with the second connection pattern CP2 and can be connected to the second connection pattern CP2 by welding or the like. In this case, if the second end portion EP2 of the second antenna 120 overlaps with the first connection pattern CP1, the antenna characteristics may change. Therefore, the second end portion EP2 of the second antenna 120 is arranged so as not to overlap with the first connection pattern CP1.

[0078] Reference Figures 8 to 10 , the antenna module 100 for wireless power transmission and reception may further include a first cover layer 130 and a second cover layer 140 .

[0079] The first cover layer 130 is provided on the upper surface of the first antenna 110. The first cover layer 130 is interposed between the upper surface of the first antenna 110 and the second antenna 120, and insulates the pattern of the first antenna 110 from the second antenna 120.

[0080] A plurality of openings are formed in the first cover layer 130. That is, a plurality of openings are formed for connecting the first antenna 110 and the second antenna 120 to each other, connecting the second antenna 120 and the second connection pattern CP2 to each other, and exposing the terminal pattern.

[0081] As an example, the first cover layer 130 includes first to sixth openings OP1 to OP6 .

[0082] The first opening OP1 is a hole for connecting the first antenna 110 and the second antenna 120, and is formed at a position overlapping with the first connection electrode SP1 of the first antenna 110. Through the first opening OP1, at least a portion of the first connection electrode SP1 of the first antenna 110 is exposed, so that the first end portion EP1 of the second antenna 120 and the first antenna 110 are connected to each other.

[0083] The second opening OP2 is a hole for connecting the second antenna 120 and the second connection pattern CP2 to each other, and is formed at a position overlapping with the second connection pattern CP2 of the first antenna 110. Through the second opening OP2, at least a portion of the second connection pattern CP2 is exposed, so that the second end portion EP2 of the second antenna 120 and the second connection pattern CP2 of the first antenna 110 are connected to each other.

[0084] The third to sixth openings OP3 to OP6 are holes for connecting the antenna module 100 for wireless power transmission and reception to an external circuit substrate, and are formed at locations overlapping with the ground patterns T1 to T4, respectively. The third opening OP3 is formed at a location overlapping with the first terminal pattern, and at least a portion of the first terminal pattern is exposed through the third opening OP3. The fourth opening OP4 is formed at a location overlapping with the second terminal pattern, and at least a portion of the second terminal pattern is exposed through the fourth opening OP4. The fifth opening OP5 is formed at a location overlapping with the third terminal pattern, and at least a portion of the third terminal pattern is exposed through the fifth opening OP5. The sixth opening OP6 is formed at a location overlapping with the fourth terminal pattern, and at least a portion of the fourth terminal pattern is exposed through the sixth opening OP6.

[0085] The second cover layer 140 is provided on the lower surface of the first antenna 110. The terminal patterns T1' to T4' provided on the lower surface of the first antenna 110 are exposed through the second cover layer 140. Specifically, a step portion A is formed between two adjacent sides of the four sides of the second cover layer 140. The terminal patterns T1' to T4' are exposed through the step portion A formed in the second cover layer 140.

[0086] Reference Figure 11 The second antenna 120 is disposed on the upper surface of the first cover layer 130. The first end EP1 of the second antenna 120 is connected to the first connection electrode SP1 of the first radiation pattern 112, which is exposed through the first opening OP1. The second end EP2 of the second antenna 120 is connected to the second connection pattern CP2 exposed through the second opening OP2.

[0087] Therefore, the antenna module 100 for wireless power transmission and reception includes a wireless power transmission and reception pattern having an outer loop coil in a loop shape configured with the second antenna 120 and an inner loop pattern in a loop shape configured with the first radiation pattern 112 and the second radiation pattern 113.

[0088] In this case, the inner loop pattern is positioned within the inner circumference of the outer loop coil. One end of the inner loop pattern (i.e., the first connection electrode SP1 of the first radiation pattern 112) is connected to one end of the outer loop coil (i.e., the first end EP1 of the second antenna 120). The other end of the inner loop pattern (i.e., the other end of the first radiation pattern 112) is connected to the first connection pattern CP1, and the other end of the outer loop coil (i.e., the second end EP2 of the second antenna 120) is connected to the second connection pattern CP2. Thus, the first antenna 110 and the second antenna 120 function as a single antenna for transmitting and receiving wireless power.

[0089] As described above, in the antenna module 100 for wireless power transmission and reception according to the first embodiment of the present disclosure, the inner loop pattern is provided in the inner circumferential area of ​​the outer loop coil. Therefore, a fixed charging recognition rate can be provided over the entire area of ​​the antenna module 100. In particular, unlike the antenna module 100 for wireless power transmission and reception in the related art, which has a vacant space in the center portion, in the antenna module 100 for wireless power transmission and reception according to the first embodiment of the present disclosure, although a small-sized device is provided in its center portion, the corresponding overlapping area between the antenna of the small-sized device and the antenna module 100 for wireless power transmission and reception is increased. Therefore, the charging recognition rate can be improved.

[0090] Reference Figure 12 The antenna module 200 for wireless power transmission and reception according to the second embodiment of the present disclosure is configured to include a first antenna 210 forming an inner loop pattern and a second antenna 220 forming an outer loop coil. The second embodiment differs from the first embodiment in that the first antenna 210 and the second antenna 220 each form an independent radiator.

[0091] Reference Figures 13 to 15 The first antenna 210 is a printed circuit substrate type antenna, and is configured to include a base substrate 211 , a first radiation pattern 212 , and a second radiation pattern 213 .

[0092] The base substrate 211 can be formed of a thin film substrate, such as a film, a sheet, or a thin film substrate. The base substrate 211 can be a flexible printed circuit substrate (FPCB). As an example, the base substrate 211 is a polypropylene (PP) sheet. The base substrate 211 is not limited to those mentioned above. Any substrate that is a thin film substrate capable of forming a coil pattern (the coil pattern constituting the antenna) can be used as the base substrate 211 in various ways.

[0093] The first radiation pattern 212 is provided on the upper surface of the base substrate 211. The first radiation pattern 212 is formed into a loop so as to wind around the center point of the base substrate 211 on the upper surface of the base substrate 211 a plurality of times.

[0094] In this case, a plurality of radiation lines are configured in the first radiation pattern 212. The plurality of radiation lines constitute a through path TP through which the first connection pattern CP3 passes and an accommodation space ES for accommodating a portion of the fourth connection pattern CP4.

[0095] The through path TP is a region formed by spacing the radiating lines apart from each other, and is formed so as to pass through the loop formed with the first radiating pattern 212. The accommodation space ES is a region formed by spacing the radiating lines apart from each other, and is formed so as to be inclined toward the outer peripheral region but not pass through the loop formed with the first radiating pattern 212.

[0096] As an example, in the region where the through path TP and the accommodating space ES are formed, the first radiation pattern 212 shares (bypasses) the second radiation pattern 213 provided on the rear surface of the base substrate 211 through a through hole and forms a loop.

[0097] As an example, see Figure 13 The first radiation pattern 212 is wound seven times around a virtual winding axis perpendicular to the base substrate 211 at the center point of the base substrate 211, forming a loop having seven circles (from the first circle to the seventh circle). In this case, the through path TP is formed so as to pass through all of the first to seventh circles, and the accommodation space ES is formed on the third to seventh circles.

[0098] The second radiation pattern 213 is provided on the lower surface of the base substrate 211. The second radiation pattern 213 is formed as a loop in a manner of winding around the center point of the base substrate 211 at the lower surface of the base substrate 211 a plurality of times.

[0099] The second radiation pattern 213 is arranged to overlap with the first radiation pattern 212, with the base substrate 211 located between the second and first radiation patterns. The second radiation pattern 213 is connected to the first radiation pattern 212 via a through-hole (or through-hole), thereby forming an inner loop pattern of the antenna module 200 for wireless power transmission and reception. In this case, the second radiation pattern 213 is connected to the first radiation pattern 212 via a through-hole in an area corresponding to the through-path TP and the accommodation space ES formed in the first radiation pattern 212, forming a path around the first radiation pattern 212.

[0100] The first antenna 210 may further include a third radiation pattern 214 formed on the upper surface of the base substrate 211. The third radiation pattern 214 may be formed in a loop shape so as to wind along the outer circumference of the base substrate 211 at the upper surface of the base substrate 211. In this case, as an example, the third radiation pattern 214 is a radiator that resonates with a frequency band for near field communication (e.g., an NFC frequency band).

[0101] The first antenna 210 may also include different radiation patterns that resonate to the MST frequency band. The third radiation pattern 214 of the first antenna 210 may be configured as a radiator that resonates to the MST frequency band.

[0102] The first antenna 210 may further include a plurality of terminal patterns for connecting the antenna module 200 for wireless power transmission and reception to a circuit substrate built into the mobile terminal.

[0103] Multiple terminal patterns are separately arranged on the upper and lower surfaces of the base substrate 211. Among the multiple terminal patterns, one pair of terminal patterns is connected to both ends of the inner loop pattern composed of the first radiation pattern 212 and the second radiation pattern 213. Among the multiple terminal patterns, another pair of terminal patterns is connected to both ends of the third radiation pattern 214. Among the multiple terminal patterns, another pair of terminal patterns is connected to both ends of the second antenna 220 (i.e., the outer loop coil) provided on the upper surface of the base substrate 211.

[0104] As an example, see Figures 13 to 15 , the first antenna 210 includes terminal patterns T5 to T0 formed on the upper surface of the base substrate 211 , and terminal patterns T5 ′ to T0 ′ formed on the lower surface of the base substrate 211 .

[0105] Terminal patterns T5 and T5' are disposed on the upper and lower surfaces of base substrate 211, respectively. All or a portion of terminal pattern T5 overlaps terminal pattern T5'. Terminal patterns T5 and T5' are connected to each other via through-holes in their respective overlapping regions, with base substrate 211 interposed between terminal patterns T5 and T5'.

[0106] The first end portion of the terminal pattern T5' and the second end portion of the terminal pattern T5' are respectively arranged to overlap with the terminal pattern T5 and the third connection pattern CP3 provided on the upper surface of the base substrate 211. The terminal pattern T5' and the third connection pattern CP3 are connected to each other through through holes in their respective regions, with the base substrate 211 interposed therebetween.

[0107] Terminal patterns T6 and T6' are disposed on the upper and lower surfaces of base substrate 211, respectively. All or a portion of terminal pattern T6 overlaps terminal pattern T6'. Terminal patterns T6 and T6' are connected to each other via through-holes in their respective overlapping regions, with base substrate 211 interposed between terminal patterns T6 and T6'.

[0108] The first end portion of the terminal pattern T6' and the second end portion of the terminal pattern T6' are respectively arranged to overlap with the terminal pattern T6 and the first connection pattern CP4 provided on the upper surface of the base substrate 211. The terminal pattern T6' and the fourth connection pattern CP4 are connected to each other through through holes in their respective regions, with the base substrate 211 interposed therebetween.

[0109] Therefore, the terminal patterns T5 and T5 ′ and the terminal patterns T6 and T6 ′ function as terminals that connect the inner loop pattern (the inner loop pattern composed of the first radiation pattern 212 and the second radiation pattern 213 ) to an external circuit.

[0110] Terminal patterns T7 and T7' are respectively disposed on the upper and lower surfaces of base substrate 211. All or a portion of terminal pattern T7 is disposed so as to overlap terminal pattern T7'. Terminal patterns T7 and T7' are connected to each other via through-holes in their respective overlapping regions, with base substrate 211 interposed between terminal patterns T7 and T7'.

[0111] The first end portion of the terminal pattern T7' and the second end portion of the terminal pattern T7' are respectively arranged to overlap with the terminal pattern T7 and the fifth connection pattern CP5 provided on the upper surface of the base substrate 211. The terminal pattern T7' and the fifth connection pattern CP5 are connected to each other through through holes in their respective regions, with the base substrate 211 interposed therebetween.

[0112] Terminal patterns T8 and T8' are disposed on the upper and lower surfaces of base substrate 211, respectively. All or a portion of terminal pattern T8 overlaps terminal pattern T8'. Terminal patterns T8 and T8' are connected to each other via through-holes in their respective overlapping regions, with base substrate 211 interposed between terminal patterns T8 and T8'.

[0113] The first end portion of the terminal pattern T8' and the second end portion of the terminal pattern T8' are respectively arranged to overlap with the terminal pattern T8 and the sixth connection pattern CP6 provided on the upper surface of the base substrate 211. The terminal pattern T8' and the sixth connection pattern CP6 are connected to each other through through holes in their respective regions, with the base substrate 211 interposed therebetween.

[0114] In this way, the terminal patterns T7 and T7' and the terminal patterns T8 and T8' are respectively connected to the fifth connection pattern CP5 and the sixth connection pattern CP6, and the fifth connection pattern CP5 and the sixth connection pattern CP6 are respectively connected to the two ends of the external loop coil (i.e., the second antenna 220), and thus serve as terminals for connecting the external loop coil (i.e., the second antenna 220) to the external circuit.

[0115] Terminal patterns T9 and T9' are disposed on the upper and lower surfaces of base substrate 211, respectively. All or a portion of terminal pattern T9 overlaps terminal pattern T9'. Terminal patterns T9 and T9' are connected to each other via through-holes in their respective overlapping regions, with base substrate 211 interposed between terminal patterns T9 and T9'.

[0116] The first end portion of the terminal pattern T9' and the second end portion of the terminal pattern T9' are respectively arranged to overlap with the terminal pattern T9 and the first end portion of the third radiant pattern 214 provided on the upper surface of the base substrate 211. The terminal pattern T9' and the third radiant pattern 214 are connected to each other via through holes in their respective overlapping regions, with the base substrate 211 interposed therebetween.

[0117] Terminal patterns T0 and T0' are respectively arranged on the upper and lower surfaces of the base substrate 211. All or part of the terminal pattern T0 is arranged so as to overlap with the terminal pattern T0'. The terminal patterns T0 and T0' are connected to each other via through holes in their respective overlapping areas, with the base substrate 211 interposed between the terminal patterns T0 and T0'.

[0118] The first end of the terminal pattern T0' and the second end of the terminal pattern T0' are respectively arranged to overlap with the second end of the terminal pattern T0 and the third radiant pattern 214 provided on the upper surface of the base substrate 211. The terminal pattern T0' and the third radiant pattern 214 are connected to each other by through holes in their respective overlapping regions, with the base substrate 211 interposed therebetween.

[0119] In this manner, the terminal patterns T9 and T9 ′ and the terminal patterns T0 and T0 ′ are respectively connected to both ends of the third radiation pattern 214 , and function as terminals connecting the third radiation pattern 214 to an external circuit.

[0120] The first antenna 210 also includes a third connection pattern CP3 and a fourth connection pattern CP4 for connecting the terminal pattern and the internal loop pattern (i.e., the first radiation pattern 212 and the second radiation pattern 213), and a fifth connection pattern CP5 and a sixth connection pattern CP6 for connecting the terminal pattern and the external loop coil (i.e., the second antenna 220).

[0121] The third connection pattern CP3 and the fourth connection pattern CP4 are respectively connected to both end portions of the inner loop pattern constituted by the first radiation pattern 212 and the second radiation pattern 213 .

[0122] The first end of the third connection pattern CP3 is connected to the first end of the first radiation pattern 212, which is located at the innermost portion of the loop formed by the first radiation pattern 212. The second end of the third connection pattern CP3 is located on the upper surface of the base substrate 211 so as to face the terminal pattern T5. In this case, the third radiation pattern 214 is located between the second end of the third connection pattern CP3 and the terminal pattern T5.

[0123] The fourth end of the fourth connection pattern CP4 is connected to the second end of the first radiation pattern 212, which is located at the outermost portion of the loop formed by the first radiation pattern 212. The second end of the fourth connection pattern CP4 is located on the upper surface of the base substrate 211 so as to face the terminal pattern T6. In this case, the third radiation pattern 214 is located between the second end of the fourth connection pattern CP4 and the terminal pattern T6.

[0124] The fifth connection pattern CP5 and the sixth connection pattern CP6 are respectively connected to both ends of the outer loop coil constituted by the second antenna 220 .

[0125] The first end of the fifth connection pattern CP5 is disposed in the accommodation space ES formed in the loop in which the first radiation pattern 212 is formed. The fifth connection pattern CP5 is connected to the first end EP1 of the second antenna 220, which is located within the accommodation space ES, by welding or the like. In this case, the fifth connection pattern CP5 to be disposed in the accommodation space ES is formed to have a line width W3 that is greater than the line width W2 of the second antenna 220. Here, the accommodation space ES refers to the area of ​​the second antenna 220 that is located on the side of the first end EP1 when the second antenna 220 is superimposed on the upper surface of the first antenna 210.

[0126] The second end portion of the fifth connection pattern CP5 is disposed on the upper surface of the base substrate 211 in a manner of being spaced apart from the terminal pattern T7. In this case, the third radiation pattern 214 is disposed between the second end portion of the fifth connection pattern CP5 and the terminal pattern T7.

[0127] The first end portion of the sixth connection pattern CP6 is disposed in an area overlapping with the second end portion EP2 of the second antenna 220. That is, the first end portion of the sixth connection pattern CP6 is disposed in an area where the second end portion EP2 of the second antenna 220 overlaps when the second antenna 220 is stacked on the upper surface of the first antenna 210.

[0128] The second end portion of the sixth connection pattern CP6 is disposed on the upper surface of the base substrate 211 in a manner spaced apart from the terminal pattern T8. In this case, the third radiation pattern 214 is disposed between the second end portion of the sixth connection pattern CP6 and the terminal pattern T8.

[0129] In this manner, in the antenna module 200 for wireless power transmission and reception according to the second embodiment of the present disclosure, a connection pattern having a line width greater than the line width W2 of the second antenna 220 is provided on an area overlapping with the end portion of the second antenna 220. Therefore, the area in contact with or coupled to the second antenna (coil) 220 is increased, thereby increasing the coupling strength between the first antenna 210 and the second antenna 220.

[0130] The second antenna 220 is configured as a coil-type antenna stacked on the upper surface of the first antenna 210 (i.e., the base substrate 211), serving as an external loop coil of the antenna module 200 for wireless power transmission and reception. In this case, both ends of the second antenna 220 are connected to the fifth connection pattern CP5 and the sixth connection pattern CP6 of the first antenna 210, respectively, by soldering or the like.

[0131] Reference Figure 16 The second antenna 220 is configured as a loop-type coil wound multiple times around a virtual winding axis. The first end EP1 of the second antenna 220 extends from the innermost portion of the loop toward the virtual winding axis and is positioned at the center of the loop. The first end EP1 of the second antenna 220 may be positioned adjacent to the center of the loop.

[0132] The first end portion EP1 of the second antenna 220 is disposed on the inner circumference of the loop in which the coil is formed, and forms a connection electrode SP, which is disposed so as to overlap with the fifth connection pattern CP5 of the first antenna 210. The second end portion EP2 of the second antenna 220 is disposed on the outermost portion of the loop in which the coil is formed, and is disposed so as to overlap with the sixth connection pattern CP6 of the first antenna 210.

[0133] Reference Figure 17 The second antenna 220 is provided on the upper surface of the first antenna 210. The connection electrode SP (which includes the first end portion EP1 of the second antenna 220) is stacked on top of the fifth connection pattern CP5 of the first radiation pattern 212 and connected to the fifth connection pattern CP5 by welding or the like.

[0134] In this case, the first end portion EP1 of the second antenna 220 is disposed adjacent to the center point of the first radiation pattern 212 (i.e., the center point of the base substrate 211), and is disposed more inward than the innermost pattern of the loop formed with the first radiation pattern 212. In other words, the first end portion EP1 of the second antenna 220 is disposed in the inner peripheral region of the loop formed with the inner loop pattern.

[0135] Therefore, the first end portion EP1 of the second antenna 220 does not overlap with the fifth connection pattern CP5, and a portion of the connection electrode SP overlaps with the fifth connection pattern CP5. The second antenna 220 is connected to the fifth connection pattern CP5 in the overlapping region thereof by welding or the like. In this case, the corresponding overlapping region of the second antenna 220 and the fifth connection pattern CP5 is contained in the accommodation space ES, which is positioned within the loop formed with the first radiation pattern 212.

[0136] In this manner, in the antenna module 200 for wireless power transmission and reception according to the second embodiment of the present disclosure, the first end portion EP1 of the second antenna 220 extends toward the center point of the inner loop pattern (i.e., the first radiation pattern 212) and is disposed within the inner circumference of the inner loop pattern. The first end portion EP1 is connected to the fifth connection pattern CP5 by welding or the like, and the fifth connection pattern is disposed in the accommodation space ES, which is positioned within the loop formed with the first radiation pattern 212. Therefore, the coupling strength between the first antenna 210 and the second antenna 220 can be increased.

[0137] In other words, in the antenna module 200 for wireless power transmission and reception according to the second embodiment of the present disclosure, the first end portion EP1 is connected to the fifth connection pattern CP5 by welding or the like, and is located further inward than the first end portion EP1 of the second antenna 220. Therefore, the coupling strength between the first antenna 210 and the second antenna 220 can be further increased compared to when the first end portion EP1 of the second antenna 220 is connected to the fifth connection pattern CP5.

[0138] The second end portion EP2 of the second antenna 220 is connected to the sixth connection pattern CP6 by welding or the like. The second end portion EP2 of the second antenna 220 is arranged so as to extend from the outermost portion of the loop forming the coil toward the second end portion of the sixth connection pattern CP6. The second end portion EP2 of the second antenna 220 is arranged so as to overlap with the sixth connection pattern CP6 and is connected to the sixth connection pattern CP6 by welding or the like.

[0139] In order to increase the coupling strength between the first antenna 210 and the second antenna 220, the second antenna 220 can be arranged in such a manner that the inner portion (not the second end portion) of the second antenna 220 overlaps with the sixth connection pattern CP6 and can be connected to the sixth connection pattern CP6 by welding, etc. In this case, if the second end portion EP2 of the second antenna 220 overlaps with different connection patterns, a change in antenna characteristics may occur. Therefore, the second end portion EP2 of the second antenna 220 is arranged in such a manner that it does not overlap with the connection pattern CP1 other than the sixth connection pattern CP6.

[0140] Reference Figures 18 to 20 , the antenna module 200 for wireless power transmission and reception may further include a first cover layer 230 and a second cover layer 240 .

[0141] The first cover layer 230 is provided on the upper surface of the first antenna 210. The first cover layer 230 is interposed between the upper surface of the first antenna 210 and the second antenna 220, and insulates the pattern of the first antenna 210 from the second antenna 220.

[0142] A plurality of openings are formed in the first cover layer 230. That is, in order to connect the connection pattern of the first antenna 210 and the second antenna 220, a plurality of openings are formed to expose the connection pattern or the terminal pattern.

[0143] As an example, the first cover layer 230 includes first to eighth openings OP1 to OP8 .

[0144] The first opening OP1 is a hole for connecting the second antenna 220 and the fifth connection pattern CP5, and is formed so as to overlap a portion of the fifth connection pattern CP5. In this case, the first opening OP1 is formed so as to overlap a portion of the fifth connection pattern CP5 provided in the accommodation space ES of the first antenna 210. In order to connect the first end portion EP1 of the second antenna 220 and the fifth connection pattern CP5, a portion of the fifth connection pattern CP5 provided in the accommodation space ES is exposed through the first opening OP1.

[0145] The second opening OP2 is a hole for connecting the second antenna 220 and the sixth connection pattern CP6 and is formed in a manner overlapping with a portion of the sixth connection pattern CP6. In order to connect the second end portion EP2 of the second antenna 220 and the sixth connection pattern CP6, a portion of the sixth connection pattern CP6 is exposed through the second opening OP2.

[0146] The third through eighth openings OP3 through OP8 are holes for connecting the antenna module 200 for wireless power transmission and reception to an external circuit substrate. These openings are formed at locations overlapping ground patterns T5 through T0, respectively. The third opening OP3 is formed overlapping terminal pattern T5, exposing at least a portion of terminal pattern T5 through the third opening OP3. The fourth opening OP4 is formed overlapping terminal pattern T6, exposing at least a portion of terminal pattern T6 through the fourth opening OP4. The fifth opening OP5 is formed overlapping terminal pattern T7, exposing at least a portion of terminal pattern T7 through the fifth opening OP5. The sixth opening OP6 is formed overlapping terminal pattern T8, exposing at least a portion of terminal pattern T8 through the sixth opening OP6. The seventh opening OP7 is formed overlapping terminal pattern T9, exposing at least a portion of terminal pattern T9 through the seventh opening OP7. The eighth opening OP8 is formed overlapping terminal pattern T0, exposing at least a portion of terminal pattern T0 through the eighth opening OP8.

[0147] A second cover layer 240 is provided on the lower surface of the first antenna 210. The terminal patterns T5' to T0' provided on the lower surface of the first antenna 210 are exposed through the second cover layer 240. Specifically, a step A is formed between two adjacent sides of the four sides of the second cover layer 240. The terminal patterns T5' to T0' are exposed through the step A formed in the second cover layer 240.

[0148] Reference Figure 21 The second antenna 220 is provided on the upper surface of the first cover layer 230. The first end EP1 of the second antenna 220 is connected to the fifth connection pattern CP5 exposed through the first opening OP1. The second end EP2 of the second antenna 220 is connected to the sixth connection pattern CP6 exposed through the second opening OP2.

[0149] Therefore, the antenna module 200 for wireless power transmission and reception includes an outer loop coil in a loop shape configured with a second antenna 220, and an inner loop pattern in a loop shape configured with a first radiation pattern 212 and a second radiation pattern 213. The outer loop coil and the inner loop pattern form their own independent wireless power transmission and reception patterns.

[0150] As described above, in the antenna module 200 for wireless power transmission and reception according to the second embodiment of the present disclosure, the inner loop pattern is provided in the inner circumferential area of ​​the outer loop coil, and the outer loop coil and the inner loop pattern operate as independent wireless power transmission and reception patterns. Therefore, a fixed charging recognition rate can be provided over the entire area of ​​the antenna module 200. In particular, unlike the antenna module 200 for wireless power transmission and reception in the related art, which has a vacant space in the center portion, in the antenna module 200 for wireless power transmission and reception according to the second embodiment of the present disclosure, although a small-sized device is provided in its center portion, the corresponding overlapping area between the antenna of the small-sized device and the antenna module 200 for wireless power transmission and reception is increased. Therefore, the charging recognition rate can be improved.

[0151] The above only describes the preferred embodiment of the present disclosure, but it is possible to modify it in various forms. For those skilled in the art, it is understandable that various modifications and variations can be implemented without departing from the scope of the claims.

Claims

1. An antenna module for wireless power transmission and reception, the antenna module comprising: base substrate; a first antenna having a first radiation pattern, the first radiation pattern being disposed on the upper surface of the base substrate and forming a first loop; as well as a second antenna that is stacked on the upper surface of the base substrate and has a coil that forms a second loop by being wound along an outer circumference of the first loop, and The first end of the second antenna and the first end of the first radiation pattern are connected to each other, and the second end of the second antenna and the second end of the first radiation pattern are respectively connected to different terminal patterns.

2. The antenna module according to claim 1, wherein: A first end portion of the first radiation pattern extends from an outermost portion of the first loop toward a center point of the first loop.

3. The antenna module according to claim 2, wherein: The first end portion of the first radiation pattern is disposed within the first loop and between an innermost pattern of the first loop and an outermost pattern of the first loop.

4. The antenna module according to claim 2, wherein: The first end portion of the first radiation pattern is a first connection electrode, the first connection electrode has a line width greater than a width of the first radiation pattern, and the first connection electrode is disposed within the first loop.

5. The antenna module according to claim 2, wherein: The first radiation pattern detours an area where the first end portion is provided in the entire area of ​​the first loop on the lower surface of the base substrate. The antenna module according to claim 2 , wherein: The first antenna further includes a second radiation pattern provided on a lower surface of the base substrate and forming a detour path of the first radiation pattern at an area where the first end of the first radiation pattern is provided in the entire area of ​​the first loop.

7. The antenna module according to claim 1, wherein: The second antenna is bent at an innermost portion of the second loop toward a center point of the second loop and overlaps with a first connection electrode of the first radiation pattern disposed within the first loop.

8. The antenna module according to claim 7, wherein: The first end portion of the second antenna is disposed in an inner peripheral region of the first loop.

9. The antenna module according to claim 1, further comprising: a first connection pattern provided on an upper surface of the base substrate and passing through the first loop to be connected to a second end portion of the first radiation pattern provided on an innermost portion of the first loop; as well as A second connection pattern is provided on an upper surface of the base substrate and is connected to a second end portion of the second antenna provided on an outermost portion of the second loop.

10. The antenna module according to claim 1, further comprising: A first cover layer is interposed between the first radiation pattern and the second antenna and has an opening formed in a region overlapping with the first connection electrode of the first radiation pattern.

11. The antenna module according to claim 1, wherein: The first radiation pattern includes a plurality of radiation lines, and an accommodation space is defined in the first loop, the accommodation space being a region where the plurality of radiation lines are spaced apart to face each other.

12. The antenna module according to claim 11, wherein: The accommodation space extends from an outermost portion of the first loop toward a center point of the first loop.

13. The antenna module according to claim 12, wherein: The accommodation space does not pass through the first loop.

14. The antenna module according to claim 11, further comprising: A connection pattern having a line width greater than line widths of the second antenna and the first radiation pattern and having a first end portion disposed in the accommodation space.

15. The antenna module according to claim 11, wherein The first radiation pattern detours an area defined as the receiving space on the lower surface of the base substrate.

16. The antenna module according to claim 11, wherein The first antenna further includes: A second radiation pattern is provided on the lower surface of the base substrate and forms a detour path of the first radiation pattern at an area defined as an accommodation space among all areas of the first loop.

17. The antenna module according to claim 11, wherein: The second antenna is bent at an innermost portion of the second loop toward a center point of the second loop and overlaps a connection pattern provided in the accommodation space. A first end portion of the second antenna is provided in an inner peripheral area of ​​the first loop.

18. The antenna module according to claim 11, wherein The first radiation pattern and the second antenna are respectively connected to different terminal patterns.

19. The antenna module according to claim 11, further comprising: A first cover layer is interposed between the first radiation pattern and the second antenna and has an opening formed in a region overlapping the accommodation space.

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