Antenna device, antenna apparatus, and impedance adjustment mechanism
The antenna device with a grounding and impedance adjustment layer, incorporating elongated gaps, addresses the limitations of existing mechanisms by achieving improved efficiency with a thinner structure.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- WISTRON NEWEB CORP
- Filing Date
- 2024-09-24
- Publication Date
- 2026-06-15
Smart Images
Figure 0007874139000001 
Figure 0007874139000002 
Figure 0007874139000003
Abstract
Description
【Technical Field】 【0001】 The present invention relates to impedance adjustment, and particularly to an antenna device, an antenna apparatus, and an impedance adjustment mechanism. The present invention relates to. 【Background Art】 【0002】 Existing impedance adjustment mechanisms for adjusting the impedance of an antenna are often limited to a specific structure. For example, they are adhesive antennas. Therefore, existing impedance adjustment mechanisms are not easily improved to further enhance their value. Thus, the inventor believes that the above-mentioned drawbacks can be improved, and focuses on research while applying scientific principles, and finally proposes the present invention which is a reasonable design and effectively improves the above-mentioned drawbacks. 【Summary of the Invention】 【Problems to be Solved by the Invention】 【0003】 Embodiments of the present invention aim to provide an antenna device, an antenna apparatus, and an impedance adjustment mechanism, which can effectively improve the possible drawbacks caused by existing impedance adjustment mechanisms. 【Means for Solving the Problems】 【0004】 Embodiments of the present invention disclose an antenna device. The antenna device includes a carrier, an impedance adjustment mechanism installed corresponding to the carrier, and an antenna mechanism. The impedance adjustment mechanism includes a grounding layer installed on the carrier and an impedance adjustment layer installed at an interval from the grounding layer. The projection area formed when the impedance adjustment layer is orthogonally projected onto the grounding layer is located inside the outer edge of the grounding layer. Here, the impedance adjustment layer is from its outer contour to the center recessedIt forms at least one elongated gap. The antenna mechanism is installed in the impedance adjustment mechanism, and the thickness of the impedance adjustment mechanism is 0.4% to 25% of the wavelength corresponding to the center frequency to which the antenna mechanism applies. 【0005】 Embodiments of the present invention disclose an impedance adjustment mechanism. The impedance adjustment mechanism comprises a grounding layer and an impedance adjustment layer installed at a distance from the grounding layer. The projected region of the impedance adjustment layer orthographically projected onto the grounding layer is located inside the outer edge of the grounding layer. Here, the impedance adjustment layer is centered from its outer contour recessed It forms at least one elongated gap. 【0006】 Embodiments of the present invention further disclose an antenna device. The antenna device comprises an impedance adjustment mechanism installed in correspondence with a carrier, and an antenna mechanism. The impedance adjustment mechanism includes a ground layer installed in correspondence with the carrier, and an impedance adjustment layer installed at a distance from the ground layer. The projection region obtained by orthogonally projecting the impedance adjustment layer onto the ground layer is located inside the outer edge of the ground layer. Here, a gap is formed in the impedance adjustment layer. The antenna mechanism is installed in the impedance adjustment mechanism, and the thickness of the impedance adjustment mechanism is 0.4% to 25% of the wavelength corresponding to the center frequency to which the antenna mechanism applies. 【0007】 Based on the above, the antenna device, antenna apparatus, and impedance adjustment mechanism disclosed in the embodiments of the present invention employ a new structural design for the impedance adjustment layer that differs from conventional designs (e.g., at least one elongated gap or gap), and by combining the impedance adjustment layer with the grounding layer, the impedance adjustment mechanism can be applied to the antenna mechanism with a smaller thickness, while simultaneously achieving better antenna efficiency. 【0008】 To further understand the features and technical content of the invention, please refer to the detailed description of the present invention and the accompanying drawings below. However, the accompanying drawings provided are for reference and illustrative purposes only and are not intended to limit the scope of the claims of the present invention. [Brief explanation of the drawing] 【0009】 [Figure 1] This is a schematic three-dimensional diagram of an antenna device according to the first embodiment of the present invention. [Figure 2] Figure 1 is a schematic top view with the box and reader omitted. [Figure 3] Figure 2 is a schematic cross-sectional view along section III-III. [Figure 4] This is a schematic diagram illustrating a simulation test of an antenna device according to the first embodiment of the present invention. [Figure 5] This is a schematic top view (1) of the impedance adjustment mechanism according to the first embodiment of the present invention. [Figure 6] This is a schematic top view (2) of the impedance adjustment mechanism according to the first embodiment of the present invention. [Figure 7] This is a schematic top view (3) of the impedance adjustment mechanism according to the first embodiment of the present invention. [Figure 8] This is a schematic top view (4) of the impedance adjustment mechanism according to the first embodiment of the present invention. [Figure 9] This is a schematic top view (5) of the impedance adjustment mechanism according to the first embodiment of the present invention. [Figure 10] This is a schematic top view of an impedance adjustment mechanism according to a second embodiment of the present invention. [Figure 11] This is a schematic top view (1) of an impedance adjustment mechanism according to a third embodiment of the present invention. [Figure 12] This is a schematic top view (2) of an impedance adjustment mechanism according to a third embodiment of the present invention. [Modes for carrying out the invention] 【0010】 Embodiments of the "antenna device, antenna apparatus, and impedance adjustment mechanism" disclosed herein will be described below. Those skilled in the art will be able to understand the merits and effects of the present invention from the published content herein. The present invention can be carried out or applied by other different embodiments. Each section herein can also be modified and altered in equal measure from various viewpoints or applications, as long as it does not deviate from the spirit of the invention. Furthermore, the drawings of the present invention are for simple and schematic purposes only and do not show actual dimensions. Further technical matters of the present invention will be described in the following embodiments, but the published content does not limit the present invention. Furthermore, the term "or" as used herein may include any one or more combinations of the relevant items, depending on the actual situation. 【0011】 Throughout this specification, terms such as “first,” “second,” and “third” may be used to describe various components and signals, but it should be understood that these components and signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. Furthermore, the term “or” as used herein may, as appropriate, include any one or a combination of the relevant enumerated items. 【0012】 [First Embodiment] Please refer to the first embodiment of the present invention shown in Figures 1 to 9. As shown in Figures 1 to 3, this embodiment discloses an antenna device 100, which preferably comprises a carrier 3, an antenna mechanism 2 spaced apart from the carrier 3, an impedance adjustment mechanism 1 positioned between the carrier 3 and the antenna mechanism 2, a box 4 housing the above-mentioned components, and a reader 5 installed in the box 4, but the present invention is not limited thereto. 【0013】 For example, in other embodiments of the present invention, although not shown, the antenna device 100 may omit at least one of the housing 4 and the reader 5 based on design requirements. Furthermore, the impedance adjustment mechanism 1 and the antenna mechanism 2 may be integrated and referred to as the antenna device 10, which can be applied (e.g., sold) independently or used in combination with other components. Additionally, the impedance adjustment mechanism 1 can also be applied (e.g., sold) independently or used in combination with other components. 【0014】 In this embodiment, the carrier 3 is a flat, piece-shaped material and can be a high-loss intermediary. For example, it may be a wave-absorbing material, a wafer, or a metal piece, but the present invention is not limited thereto. The box 4 forms a plurality of storage spaces 41, and the carrier 3, the impedance adjustment mechanism 1, and the antenna mechanism 2 are all arranged together in one of the storage spaces 41 in the box 4. The reader 5 can read the signal output from the antenna mechanism 2, thereby measuring the specific position of the carrier 3 within the box 4. To further explain, in this embodiment, the antenna device 100 is described as an example applied to the semiconductor domain, the box 4 is, for example, a wafer box (front-opening unified pod, FOUP), and the carrier 3 is, for example, a wafer, but the present invention is not limited thereto. 【0015】 The impedance adjustment mechanism 1 is installed in accordance with the carrier 3, and the antenna mechanism 2 is installed on the impedance adjustment mechanism 1. That is, the impedance adjustment mechanism 1 is sandwiched between the carrier 3 and the antenna mechanism 2. Here, the antenna mechanism 2 is applied to a specific center frequency, and the thickness H1 of the impedance adjustment mechanism 1 is 0.4% to 25% of the wavelength corresponding to the specific center frequency. 【0016】 More specifically, the impedance adjustment mechanism 1 in the present embodiment includes a ground layer 11 installed on the carrier 3, an impedance adjustment layer 12 arranged at an interval from the ground layer 11 in the thickness direction H, and a dielectric layer 13 sandwiched between the ground layer 11 and the impedance adjustment layer 12. Here, the resonant frequency of the impedance adjustment layer 12 can be adjusted according to its size (e.g., curves L1, L2, L3 shown in FIG. 4), and a preferable arrangement of the size of the impedance adjustment layer 12 is that the layout distance R between the outer contour 121 of the impedance adjustment layer 12 and its center C is 25% - 45% of the wavelength, but the present invention is not limited thereto. 【0017】 Furthermore, the impedance adjustment layer 12 is preferably located directly above the ground layer 11. Thereby, the ground layer 11 can shield the side surface of the impedance adjustment layer 12. That is, the projection area formed by the impedance adjustment layer 12 projecting onto the ground layer 11 is located inside the outer edge of the ground layer 11. 【0018】 Furthermore, the insulator layer 13 is formed of an insulating material, and its relative permittivity is preferably between 1 and 6, but can be adjusted and changed according to design requirements, and the present invention is not limited thereto. For example, in other embodiments not depicted in the present invention, it is also possible to omit the insulator layer 13 in the impedance adjustment mechanism 1 (that is, the insulator layer 13 is substantially equivalent to an air dielectric layer). 【0019】 The antenna mechanism 2 includes an electronic component 21 (e.g., a detection chip) installed in the impedance adjustment mechanism 1, a detection antenna 22 electrically coupled to the electronic component 21, and an insulator layer 23 installed on the impedance adjustment layer 12 to support the detection antenna 22 (that is, the insulator layer 23 separates the impedance adjustment layer 12 and the detection antenna 22). 【0020】 In this embodiment, the impedance adjustment layer 12 has an opening 122 for the electronic component 21 to be installed inside, and the insulating layer 13 has a housing hole 131 that communicates with the opening 122. As a result, the electronic component 21 is positioned through the opening 122 and the housing hole 131 and installed on the grounding layer 11. 【0021】 More specifically, the opening 122 is preferably formed at the center C of the impedance adjustment layer 12. The area of the opening 122 is preferably 10% or less of the area enclosed by the outer contour 121 of the impedance adjustment layer 12. The housing hole 131 is smaller than the opening 122 and exposes a portion of the ground layer 11 so that the electronic component 21 can be placed on it, but the present invention is not limited thereto. For example, in other embodiments not depicted in the present invention, the opening 122 may be located away from the center C of the impedance adjustment layer 12. Alternatively, the housing hole 131 may not completely penetrate the insulating layer 13 and its depth may be adjusted according to design requirements. Or, the impedance adjustment layer 12 may not form the opening 122, the insulating layer 13 may not form the housing hole 131, and the electronic component 21 may be placed directly on the impedance adjustment layer 12. 【0022】 Furthermore, the antenna projection region of the detection antenna 22, formed by orthogonal projection onto the top surface of the impedance adjustment layer 12, is located entirely above the top surface and does not cover any gaps. In other words, it is preferable that no gaps are formed in the portion of the impedance adjustment layer 12 corresponding to the detection antenna 22, but the present invention is not limited thereto. 【0023】 The above describes the compatibility between the impedance adjustment mechanism 1 and the antenna mechanism 2. The impedance adjustment layer 12 can be structurally designed according to actual needs so that the impedance adjustment mechanism 1 has better operational performance. In the following, several preferred examples of various possible structural designs for the impedance adjustment layer 12 are selected and described (for example, Figures 5 to 9), but the present invention is not limited thereto. 【0024】 To further explain, in this embodiment, the external contour 121 of the impedance adjustment layer 12 is circular, but in other embodiments not shown in the present invention, the external contour 121 of the impedance adjustment layer 12 can be adjusted or changed according to design requirements (e.g., polygonal). 【0025】 As shown in Figures 3 and 5, the impedance adjustment layer 12 extends from the outer contour 121 to the center C to A recessed, elongated gap 123 is formed. That is, the elongated gap 123 communicates with the opening 122, and the elongated gap 123 is linear, passing through the thickness direction H and through the impedance adjustment layer 12. From another perspective, the impedance adjustment layer 12 in this embodiment can form only the elongated gap 123 (and the opening 122). Furthermore, the width W123 of the elongated gap 123 is preferably 3% or less of the wavelength. Based on this, the antenna efficiency of the antenna device 10 when using the impedance adjustment layer 12 as shown in Figure 5 is approximately 0.239 or higher. Here, the antenna efficiency is the gain divided by the directivity. 【0026】 As shown in Figures 3, 6, and 7, the number of elongated gaps 123 formed in the impedance adjustment layer 12 can also be N, where N is a positive integer, and preferably an even number. Here, it is preferable that the N elongated gaps 123 are arranged in pairs in a straight line, thereby dividing the impedance adjustment layer 12 into N independent adjustment blocks S. Furthermore, as shown in Figure 7, each of the adjustment blocks S has a central angle σS with respect to the center C, and it is preferable that the difference in the central angles σS of any two of the adjustment blocks S is 120 degrees or less. 【0027】 From another perspective, the impedance adjustment layer 12 can form only N elongated gaps 123 (and openings 122). To further explain, in this embodiment, N shown in Figure 6 is 2, and the antenna efficiency of the antenna device 10 when using the impedance adjustment layer 12 shown in Figure 6 is approximately 0.291 or higher. Also, in Figure 7, N is 4, and the antenna efficiency of the antenna device 10 when using the impedance adjustment layer 12 shown in Figure 7 is approximately 0.286 or higher. Furthermore, in other embodiments not depicted in this invention, N may be an even number of 6 or more, or N may be a positive integer greater than 1 and may be an odd number. 【0028】 As shown in Figures 3 and 8, the impedance adjustment layer 12 may also have a plurality of elongated gaps 123, and further a plurality of inner gaps 124 extending from the center C toward the outer contour 121. The width of each inner gap 124 is preferably 3% or less of the wavelength. The plurality of inner gaps 124 are generally of the same length (e.g., 50% to 80% of the layout distance), communicate with the opening 122, but do not touch the outer contour 121, and each inner gap 124 passes linearly through the thickness direction H toward the impedance adjustment layer 12, but is not limited to this. For example, in other embodiments not depicted in the present invention, the lengths of the plurality of inner gaps 124 may be slightly different. 【0029】 From another perspective, the impedance adjustment layer 12 in this embodiment can only form a plurality of inner gaps 124 and elongated gaps 123 (and openings 122). Furthermore, in Figure 8 of this embodiment, it is explained that there are two inner gaps 124 formed in the impedance adjustment layer 12, and it is preferable that each inner gap 124 and the elongated gap 123 straddle a first angle σ1 of 85 to 165 degrees, more preferably 105 to 165 degrees. Based on this, the antenna efficiency of the antenna device 10 when using the impedance adjustment layer 12 shown in Figure 8 is approximately 0.417 or higher. 【0030】 As shown in Figures 3 and 9, the impedance adjustment layer 12 can form a plurality of elongated gaps 123 and a plurality of inner gaps 124, and further form a plurality of outer gaps 125 extending from the outer contour 121 toward the center C. The width of each outer gap 125 is preferably 3% or less of the wavelength. 【0031】 The lengths of the multiple outer gaps 125 are approximately the same (for example, 50% to 80% of the layout distance), they do not touch the center C (i.e., they do not communicate with the opening 122), and each outer gap 125 is linear and passes through the impedance adjustment layer 12 in the thickness direction H, but is not limited to this. For example, in other embodiments not depicted in the present invention, the lengths of the multiple outer gaps 125 may differ slightly. In other words, the impedance adjustment layer 12 in this embodiment can only form the multiple outer gaps 125, the multiple inner gaps 124, and the elongated gap 123 (and the opening 122). 【0032】 More specifically, the outer gap 125 or the elongated gap 123 is positioned between any two adjacent inner gaps 124, thereby defining M adjustment blocks S in the impedance adjustment layer 12, where M is a positive integer, and the M adjustment blocks S are adjacent to each other and form a single structure. Furthermore, each adjustment block S has a central angle σS with respect to the center C, and the difference in the central angles σS of any two adjustment blocks S is preferably 60 degrees or less. 【0033】 More specifically, in Figure 9 of this embodiment, there are four inner gaps 124 formed in the impedance adjustment layer 12, and three outer gaps 125 formed in the impedance adjustment layer 12. Of these, the two inner gaps 124 that are far from the elongated gap 123 preferably form a first angle σ1 with the elongated gap 123 of 85 to 165 degrees, more preferably 105 to 165 degrees. On the other hand, the two inner gaps 124 that are close to the elongated gap 123 preferably form a second angle σ2 with the elongated gap 123 of 25 to 65 degrees. Based on this, the antenna efficiency of the antenna device 10 when using the impedance adjustment layer 12 shown in Figure 9 is approximately 0.409 or higher. 【0034】 As described above, as shown in Figures 1 to 9, in this embodiment, the antenna device 100, the antenna apparatus 10, and the impedance adjustment mechanism 1, through the structural design of the impedance adjustment layer 12 (for example, at least one elongated gap 123) and its combination with the grounding layer 11, can be applied to the antenna mechanism 2 with a thinner thickness (for example, 0.4% to 25% of the wavelength) and at the same time achieve a better antenna efficiency (for example, 0.239 or higher). 【0035】 [Second Embodiment] Please refer to Figure 10. Figure 10 shows a second embodiment of the present invention. Since this embodiment is similar to the first embodiment described above, the commonalities between the two embodiments will not be described in detail again. However, this embodiment differs from the first embodiment described above mainly in respect to the impedance adjustment layer 12. 【0036】 In this embodiment, the impedance adjustment layer 12 has gaps 126 formed therein, and the width of each gap 126 is preferably 3% or less of the wavelength. The gaps 126 are formed extending from the center C of the impedance adjustment layer 12 toward the outer contour 121, and the gaps 126 do not touch the outer contour 121. The gaps 126 are linear and pass through the impedance adjustment layer 12 in the thickness direction H, and the length of the gaps 126 exceeds 50% of the layout distance R. In other words, the impedance adjustment layer 12 in this embodiment forms only the gaps 126 (and the openings 122). 【0037】 [Third Embodiment] Please refer to Figures 11 and 12. Figures 11 and 12 show a third embodiment of the present invention. Since this embodiment is similar to the first embodiment described above, the commonalities between the two embodiments will not be described in detail again. However, this embodiment differs from the first embodiment described above mainly in respect to the impedance adjustment layer 12. 【0038】 In this embodiment, gaps 126 are formed in the impedance adjustment layer 12, and the width of each gap 126 is preferably 3% or less of the wavelength. The gaps 126 are linear and pass through the impedance adjustment layer 12 in the thickness direction H. Here, the length of the gaps 126 exceeds 50% of the layout distance R. From another perspective, the impedance adjustment layer 12 in this embodiment can form only the gaps 126. 【0039】 Furthermore, in this embodiment, the impedance adjustment layer 12 defines a circular layout area 127, the center of which is the center C of the impedance adjustment layer 12, and the area of the circular layout area 127 is between 15% and 25% of the area enclosed by the outer contour 121 of the impedance adjustment layer 12, but the present invention is not limited thereto. In this embodiment, the gap 126 intersects (or passes through) the circular layout area 127. 【0040】 More specifically, given that the above conditions are met, the position of the gap 126 in the impedance adjustment layer 12 of this embodiment can be adjusted according to design requirements. For example, as shown in Figure 11, the gap 126 is formed extending from the outer contour 121 and does not pass through the center C. Alternatively, as shown in Figure 12, the gap 126 is formed without touching the outer contour 121 (and passing through the center C). 【0041】 [Technical Effects of Embodiments of the Present Invention] In general, the antenna devices, antenna apparatus, and impedance adjustment mechanisms disclosed in embodiments of the present invention employ a novel structural design different from conventional designs (for example, at least one of the elongated gaps or gaps) in the impedance adjustment layer, and by combining the impedance adjustment layer with the ground layer, the impedance adjustment mechanism can be applied to the antenna mechanism with a smaller thickness, while simultaneously achieving excellent antenna efficiency. 【0042】 Furthermore, the antenna device, antenna apparatus, and impedance adjustment mechanism disclosed in embodiments of the present invention can radiate normally even when the total thickness of the detection antenna is less than 1% of the wavelength corresponding to the center frequency, and the detection antenna can achieve appropriate efficiency with respect to its total thickness. 【0043】 The information disclosed above represents only preferred embodiments of the present invention and does not limit the scope of the claims. Therefore, all equivalent technical modifications made based on the specifications and accompanying drawings of the present invention are included within the scope of the claims. [Explanation of symbols] 【0044】 100 Antenna Devices 10 Antenna equipment 1. Impedance adjustment mechanism 11 Ground layer 12 Impedance Adjustment Layer 121 External contour 122 Open hole 123 Long gap 124 Inner gap 125 Outer gap 126 Gap 127 Circular layout area 13 Dielectric layer 131 containment holes 2 Antenna mechanism 21 Electronic Components 22 detection antennas 23 Insulator layer 3 carriers 4 box body 41 Storage space 5. Reader H thickness direction R layout distance C center W123 width S Adjustment Block σ1 First angle σ² Second angle σS center angle H1 Thickness L1, L2, L3 curves
Claims
[Claim 1] An antenna device comprising a carrier, an impedance adjustment mechanism installed in correspondence with the carrier, and an antenna mechanism installed in the impedance adjustment mechanism, The impedance adjustment mechanism is, The grounding layer installed on the carrier, An impedance adjustment layer is installed at a distance from the grounding layer, and the projection area that is orthogonally projected onto the grounding layer is located inside the outer edge of the grounding layer, forming at least one elongated gap recessed from the outer contour towards the center; Includes, The thickness of the impedance adjustment mechanism is 0.4% to 25% of the wavelength of the center frequency to which the antenna mechanism is applied. The antenna device includes a box-shaped body with multiple storage spaces, and the carrier, the impedance adjustment mechanism, and the antenna mechanism are jointly installed in one of the multiple storage spaces. An antenna device characterized by the following features. [Claim 2] The antenna device according to claim 1, wherein the antenna device includes a reader installed in the box for reading a signal output from the antenna mechanism. [Claim 3] The antenna device according to claim 1, wherein the carrier is in the shape of a flat plate, and the carrier is a high-loss dielectric. [Claim 4] Electronic components installed in the impedance adjustment mechanism, A detection antenna electrically coupled to the aforementioned electronic component, An insulating layer is installed in the impedance adjustment layer, supports the detection antenna, and separates the impedance adjustment layer from the detection antenna. The antenna device according to claim 1, further comprising: [Claim 5] An antenna device comprising a carrier, an impedance adjustment mechanism installed corresponding to the carrier, and an antenna mechanism installed on the impedance adjustment mechanism, The impedance adjustment mechanism is, The grounding layer installed on the carrier, An impedance adjustment layer is installed at a distance from the grounding layer, and the projection area that is orthogonally projected onto the grounding layer is located inside the outer edge of the grounding layer, forming at least one elongated gap recessed from the outer contour towards the center; Includes, The thickness of the impedance adjustment mechanism is 0.4% to 25% of the wavelength of the center frequency to which the antenna mechanism is applied. Electronic components installed in the impedance adjustment mechanism, A detection antenna electrically coupled to the aforementioned electronic component, An insulating layer is installed in the impedance adjustment layer, supports the detection antenna, and separates the impedance adjustment layer from the detection antenna. Furthermore, An antenna device wherein the impedance adjusting layer has an opening that communicates with at least one of the elongated gaps, the electronic component is installed in the opening, and the area of the opening does not exceed 10% of the area enclosed by the outer contour of the impedance adjusting layer. [Claim 6] The antenna device according to claim 5, wherein the impedance adjustment mechanism includes a dielectric layer sandwiched between the ground layer and the impedance adjustment layer, the dielectric layer has a housing hole that communicates with the opening, and the electronic components are installed through the opening and the housing hole and installed on the ground layer. [Claim 7] An antenna device comprising a carrier, an impedance adjustment mechanism installed corresponding to the carrier, and an antenna mechanism installed on the impedance adjustment mechanism, The impedance adjustment mechanism is, The grounding layer installed on the carrier, An impedance adjustment layer is installed at a distance from the grounding layer, and the projection area that is orthogonally projected onto the grounding layer is located inside the outer edge of the grounding layer, forming at least one elongated gap recessed from the outer contour towards the center; Includes, The thickness of the impedance adjustment mechanism is 0.4% to 25% of the wavelength of the center frequency to which the antenna mechanism is applied. Electronic components installed in the impedance adjustment mechanism, A detection antenna electrically coupled to the aforementioned electronic component, An insulating layer is installed in the impedance adjustment layer, supports the detection antenna, and separates the impedance adjustment layer from the detection antenna. Furthermore, The detection antenna is an antenna device in which the antenna projection area, which is orthogonally projected onto the top surface of the impedance adjustment layer, is located entirely on the top surface and does not cover the gap. [Claim 8] An antenna device comprising a carrier, an impedance adjustment mechanism installed corresponding to the carrier, and an antenna mechanism installed on the impedance adjustment mechanism, The impedance adjustment mechanism is, The grounding layer installed on the carrier, An impedance adjustment layer is installed at a distance from the grounding layer, and the projection area that is orthogonally projected onto the grounding layer is located inside the outer edge of the grounding layer, forming at least one elongated gap recessed from the outer contour towards the center; Includes, The thickness of the impedance adjustment mechanism is 0.4% to 25% of the wavelength of the center frequency to which the antenna mechanism is applied. An antenna device in which the layout distance between the outer contour and the center of the impedance adjustment layer is 25% to 45% of the wavelength. [Claim 9] An antenna device comprising a carrier, an impedance adjustment mechanism installed corresponding to the carrier, and an antenna mechanism installed on the impedance adjustment mechanism, The impedance adjustment mechanism is, The grounding layer installed on the carrier, An impedance adjustment layer is installed at a distance from the grounding layer, and the projection area that is orthogonally projected onto the grounding layer is located inside the outer edge of the grounding layer, forming at least one elongated gap recessed from the outer contour towards the center; Includes, The thickness of the impedance adjustment mechanism is 0.4% to 25% of the wavelength of the center frequency to which the antenna mechanism is applied. An antenna device in which the width of at least one of the elongated gaps does not exceed 3% of the wavelength. [Claim 10] An impedance adjustment mechanism comprising a grounding layer and an impedance adjustment layer, The impedance adjustment layer is installed at a distance from the ground layer, and the projection area in which the impedance adjustment layer is orthogonally projected onto the ground layer is located inside the outer edge of the ground layer. The impedance adjustment layer has at least one elongated gap recessed in the center from its outer contour. The number of the elongated gaps is one, and the impedance adjustment layer forms two inner gaps extending from the center toward the outer contour, the two inner gaps not reaching the outer contour, and each inner gap is positioned to make a first angle of 85 to 165 degrees with the elongated gap. An impedance adjustment mechanism characterized by the following: [Claim 11] An impedance adjustment mechanism comprising a grounding layer and an impedance adjustment layer, The impedance adjustment layer is installed at a distance from the ground layer, and the projection area in which the impedance adjustment layer is orthogonally projected onto the ground layer is located inside the outer edge of the ground layer. The impedance adjustment layer has at least one elongated gap recessed in the center from its outer contour. An impedance adjustment mechanism wherein the number of at least one of the elongated gaps is one, the impedance adjustment layer has a plurality of inner gaps formed from the center toward the outer contour, the impedance adjustment layer has a plurality of outer gaps formed from the outer contour toward the center, the plurality of inner gaps do not reach the outer contour, the plurality of outer gaps do not reach the center, and the outer gap or the elongated gap is positioned between any two adjacent inner gaps. [Claim 12] An impedance adjustment mechanism comprising a grounding layer and an impedance adjustment layer, The impedance adjustment layer is installed at a distance from the ground layer, and the projection area in which the impedance adjustment layer is orthogonally projected onto the ground layer is located inside the outer edge of the ground layer. The impedance adjustment layer has at least one elongated gap recessed in the center from its outer contour. An impedance adjustment mechanism in which the impedance adjustment layer has M adjustment blocks defined, where M is a positive integer, and the M adjustment blocks are adjacent to each other and form a single, integrated structure. [Claim 13] An impedance adjustment mechanism comprising a grounding layer and an impedance adjustment layer, The impedance adjustment layer is installed at a distance from the ground layer, and the projection area in which the impedance adjustment layer is orthogonally projected onto the ground layer is located inside the outer edge of the ground layer. The impedance adjustment layer has at least one elongated gap recessed in the center from its outer contour. An impedance adjustment mechanism in which the number of at least one of the elongated gaps is N, where N is a positive integer, and thereby the impedance adjustment layer is divided into N adjustment blocks that are separated from each other. [Claim 14] The impedance adjustment mechanism according to claim 13, wherein each of the adjustment blocks has a central angle with respect to the center, and the difference between the central angles of any two of the adjustment blocks does not exceed 120 degrees. [Claim 15] An impedance adjustment mechanism comprising a grounding layer and an impedance adjustment layer, The impedance adjustment layer is installed at a distance from the ground layer, and the projection area in which the impedance adjustment layer is orthogonally projected onto the ground layer is located inside the outer edge of the ground layer. The impedance adjustment layer has at least one elongated gap recessed in the center from its outer contour. The impedance adjustment layer has an opening located at the center and communicating with at least one of the elongated gaps, and the impedance adjustment mechanism includes a dielectric layer sandwiched between the ground layer and the impedance adjustment layer, the dielectric layer has a accommodating hole communicating with the opening, and the relative dielectric constant of the dielectric layer is 1 to 6. [Claim 16] An antenna device comprising an impedance adjustment mechanism including a grounding layer and an impedance adjustment layer, and an antenna mechanism, The impedance adjustment layer is installed at a distance from the ground layer, the projection region in which the impedance adjustment layer is orthogonally projected onto the ground layer is located inside the outer edge of the ground layer, and a gap is formed in the impedance adjustment layer. The antenna mechanism is installed in the impedance adjustment mechanism, and the thickness of the impedance adjustment mechanism is 0.4% to 25% of the wavelength of the center frequency to which the antenna mechanism applies. There is a layout distance between the outer contour of the impedance adjustment layer and its center, and the length of the gap exceeds 50% of the layout distance. An antenna device characterized by the following features. [Claim 17] The antenna device according to claim 16, wherein the gap is formed extending from the center of the impedance adjustment layer toward its outer contour, and the gap does not reach the outer contour. [Claim 18] An antenna device comprising an impedance adjustment mechanism including a grounding layer and an impedance adjustment layer, and an antenna mechanism, The impedance adjustment layer is installed at a distance from the ground layer, the projection region in which the impedance adjustment layer is orthogonally projected onto the ground layer is located inside the outer edge of the ground layer, and a gap is formed in the impedance adjustment layer. The antenna mechanism is installed in the impedance adjustment mechanism, and the thickness of the impedance adjustment mechanism is 0.4% to 25% of the wavelength of the center frequency to which the antenna mechanism applies. An antenna device wherein a circular layout area is defined in the impedance adjustment layer, the center of the circular layout area is the center of the impedance adjustment layer, the area of the circular layout area is 15% to 25% of the area enclosed by the outer contour of the impedance adjustment layer, and the gap intersects the circular layout area. [Claim 19] The antenna device according to claim 18, wherein the gap does not pass through the center of the circular layout area.