Antenna device

Abstract

The present invention provides an antenna device, comprising: a main body; a signal pin coupled to the main body for transmitting a first signal to the inside of the main body; a plurality of first dielectrics stacked in a first space formed inside the main body; and a first end disposed at one end of the main body; wherein the plurality of first dielectrics are used to form a second signal transmitted to the outside corresponding to the first signal; and the first end mediates the transmission of the second signal.

Description

Technical Field

[0001] This invention relates to an antenna device. Prior Technology

[0002] High-frequency thermotherapy (RF thermotherapy) primarily involves raising the temperature of the target area to above 45°C. When the temperature reaches 45°C, the collagen in the dermis is stimulated, thereby tightening the skin.

[0003] The key to skin tightening technology is generating heat in the dermis layer, which is about 2mm to 4mm deep.

[0004] However, most research on RF thermotherapy has focused on tumor resection or the use of electrodes to emit electromagnetic fields, both of which are very inefficient.

[0005] It is well known that using electromagnetic waves in skin tightening treatments minimizes inconvenience. The problem lies in the large effective area. If microwaves are emitted, they propagate widely, making it difficult to focus on the target area, and there is a possibility of temperature rise in non-target areas.

[0006] Previous studies on RF thermotherapy techniques for skin enhancement (RF thermotherapy for skin wrinkle removal) have used electrodes that generate electric fields. Electrodes for generating electric fields are advantageous for the design of small, portable devices. However, a significant number of these designs do not consider impedance matching, resulting in impedance mismatch issues where higher power or longer treatment times are required to achieve the desired skin-tightening temperature. Summary of the Invention

[0007] The problem that the invention aims to solve The technical problem to be solved by the present invention is to provide an antenna device that can apply a concentrated electromagnetic field in a specific area, while achieving miniaturization to improve the convenience of thermotherapy. Technical means to solve the problem

[0008] To address the aforementioned technical challenges, the present invention provides an antenna device comprising: a main body; a signal pin coupled to the main body for transmitting a first signal to the inner side of the main body; a plurality of first dielectrics stacked in a first space formed inside the main body; and a first end disposed at one end of the main body; wherein the plurality of first dielectrics are used to form a second signal transmitted to the outside corresponding to the first signal; and the first end mediates the transmission of the second signal.

[0009] The antenna device of the present invention further includes a conductive pattern disposed on one side of at least one of the plurality of first dielectrics; the conductive pattern can form the second signal together with the first dielectric.

[0010] The conductive pattern can be configured in a frame shape.

[0011] The conductive pattern can be formed along the border of a right-angled quadrilateral.

[0012] The conductive pattern can be formed along the border of a square.

[0013] The size of the conductive pattern can gradually increase in the direction of the first end.

[0014] The signal pin penetrates into the inside of the main body and can be inserted in a direction perpendicular to the stacking direction of the first dielectrics.

[0015] A through hole can be formed at the center of at least one of the plurality of first dielectrics.

[0016] The width of the signal pin can penetrate through at least one of the through holes.

[0017] A conductive layer can be formed inside the through hole.

[0018] The antenna device of the present invention further includes a second dielectric disposed below the plurality of first dielectrics; the first dielectric and the second dielectric can be filled in the first space.

[0019] The main body can include: a first region defining a space for stacking the plurality of first dielectrics; a second region defining, together with the first region, a second space surrounding at least a part of the outer contour of the first region.

[0020] The main body can further include a connecting portion connecting the first region and the second region; the cross-section of the second space can be formed in a "匚" shape.

[0021] The antenna device of the present invention further includes a second end portion disposed at the other end of the main body; the second end portion may include an inlet and an outlet, the inlet and outlet forming a path for supplying and discharging fluid in the second space. Compared with the efficacy of previous technologies

[0022] The present invention enables the application of a concentrated electromagnetic field in a specific area while achieving miniaturization, thus improving the convenience of using thermotherapy. Simple Explanation of the Diagram

[0023] Figure 1 shows an antenna device according to an embodiment of the present invention.

[0024] Figures 2 and 3 show a portion of the structure of an antenna device according to an embodiment of the present invention.

[0025] Figure 4 shows a partial structure of an antenna device according to an embodiment of the present invention.

[0026] Figure 5 shows a partial structure of an antenna device according to an embodiment of the present invention.

[0027] Figure 6 shows the geometrical variations of a portion of the structure of an antenna device according to an embodiment of the present invention.

[0028] Figure 7 shows the geometrical variations of a portion of the structure of an antenna device according to an embodiment of the present invention.

[0029] Figure 8 shows a simulation of the electric field propagation characteristics after an internal structure is inserted inside a right-angled quadrilateral waveguide.

[0030] Figure 9 shows the parameters based on the frequency of the structure in Figure 8.

[0031] Figure 10 shows the dielectric constant based on the frequency of the structure in Figure 8.

[0032] Figure 11 shows the permeability according to the frequency for the structure in Figure 8.

[0033] Figure 12 compares the antenna devices that replace those in Figures 6 and 7 at the same size, the structure whose internal structure is filled only with dielectric, and the structure that has no internal structure but is filled with blank space.

[0034] Figure 13 shows the prototypes of Figures 6 and 7 and their performance analysis.

[0035] Figure 14 shows the experimental results related to the thermal performance of the antenna devices in Figures 6 and 7. Implementation

[0036] This invention can be modified in various ways and has various embodiments, and specific embodiments are shown in the accompanying drawings and described in detail. However, this is not intended to limit the invention to specific embodiments, but should be understood to include all variations, equivalents and substitutes within the spirit and technical scope of the invention.

[0037] In the description of this invention, if it is determined that a detailed description of the relevant prior art would obscure the focus of this invention, such description will be omitted.

[0038] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0039] Figure 1 is an exploded view (left side) and an assembled view (right side) of an antenna device 100 according to an embodiment of the present invention; Figures 2 and 3 are related illustrations of dielectric stacking as part of the structure of the antenna device 100; Figure 4 shows the internal connection structure of the connector of the main body 110; Figure 5 is used to show the first space 111 and the second space 112 of the main body 110.

[0040] Referring to Figures 1 to 5, an antenna device 100 according to an embodiment of the present invention will be described.

[0041] An antenna device 100 according to an embodiment of the present invention may include: a main body 110, a coaxial connector 120, an internal structure 130, a first end 150, and a second end 160.

[0042] The main body 110 can form the outer and inner sides of the antenna device 100.

[0043] The outer and inner sides of the main body 110 have the outer shape of a quadrilateral prism, and the outer and inner sides are connected to have a predetermined thickness.

[0044] The main body 110 has first openings at both ends of its z-axis (length direction, upward direction in the figure). The first openings and the inner space are defined as a first space 111 defined by the main body 110. The first openings may be formed to a size corresponding to the area of ​​the first dielectric 131 or the first dielectric 131 and the second dielectric 132 disposed in the first space 111.

[0045] The first space 111 and the portion of the main body 110 surrounding the first space 111 can perform waveguide functions.

[0046] A mounting groove 113 may be formed at one end of the body 110 along the z-axis. The mounting groove 113 provides space for mounting the first end 150, and the portion of the body 110 surrounding the mounting groove 113 defines the position of the first end 150 on a horizontal plane.

[0047] The second end 160 can be attached to the other end of the z-axis of the main body 110.

[0048] At the other end of the body 110 along the z-axis, in addition to the first opening, a second opening may also be included. The second opening may be connected to a second space 112 that can be filled with cooling water.

[0049] A coaxial connector 120 can be attached to the outer side of the main body 110.

[0050] Figure 5 shows structure (a) with a portion of the antenna device 100 according to an embodiment of the present invention cut away, and structure (b) with the main body 110 distinguished by dashed lines in the cross-section of the antenna device 100. In fact, the main body 110 may be a structure formed by continuously connecting the distinguished structures.

[0051] The main body 110 can be divided into a first region 114, a second region 115 and a connecting part 116.

[0052] A first space 111 is formed inside the first region 114. The first space 111 and the inner surface of the first region 114 can work together to function as a waveguide.

[0053] The second region 115 is formed in a shape similar to the first region 114, but with a greater length and thickness.

[0054] A second space 112 in the shape of a trench can be formed between the first region 114 and the second region 115.

[0055] The first region 114 and the second region 115 can be connected through the connecting portion 116.

[0056] The outer surface of the first region 114, the inner surface of the second region 115, and the outer surface of the connecting portion 116 delimit the second space 112 together. As shown in FIG. 5, the second space 112 can be formed with a cross-section having a thickness in a substantially longitudinal direction in a "匚" shape (U-shaped). The "匚" shape can be formed into a shape that can be smoothly connected by a curve when changing the direction, and the ends can slightly enter the side of the connecting portion 116. <0,000,176>

[0057] The upper end of the second space 112 is closed by the upper surface of the main body 110, and the lower end is mostly closed by the second end portion 160. However, the water inlet 161 and the water outlet 162 included in the second end portion 160 form a flow path leading from the outside to the second space 112.

[0058] The second space 112 extends upward to a position adjacent to the first end portion 150, and further allows the cooling water filled in the second space 112 to receive the heat transferred from the first end portion 150 through the upper surface of the main body 110.

[0059] In summary, the first region 114 of the main body 110 can be understood as a part for defining a waveguide, and the second region 115 can be understood as a part for forming a flow path of a fluid to define a cooling structure of the antenna device 100.

[0060] The cooling structure of the present invention has the effect of transferring the heat that may be generated in the internal structure 130 during the radio wave transmission process to the cooling water filled in the second space 112 in addition to the heat transferred from the first end portion 150. Accordingly, the antenna device 100 of the present invention has excellent effects not only in terms of the safety of use but also in terms of durability.

[0061] The main body 110 is formed of a metal material. For example, the main body 110 can be formed of copper (Cu), silver (Ag), etc. [[ID=2,8]]

[0062] The coaxial connector 120 is for transmitting electromagnetic signals and is coupled to the outer surface or the lower surface of the main body 110.

[0063] The coaxial connector 120 includes a signal pin 121, and the signal pin 121 can penetrate to the inside of the first space 111 to transmit the first signal. That is, the signal pin 121 can be inserted into the inside of the waveguide to transmit the first signal.

[0064] Multiple first dielectrics 131 can form a second signal that can be transmitted to the outside, corresponding to the first signal.

[0065] The signal pin 121 is bonded to the first dielectric 131 or the second dielectric 132 in a through-hole configuration. For bonding, a through-hole 133 may be formed in the first dielectric 131 or the second dielectric 132.

[0066] The signal pin 121 extends into the inner side of the main body 110 and can be inserted into the through hole 133 in a direction perpendicular to the stacking direction of the first dielectric.

[0067] Unlike the accompanying drawings, a through-hole may be formed at the center of the second dielectric 132 and at least one of the plurality of first dielectrics 131. Here, the signal pin 121 may be configured to pass through at least one through-hole.

[0068] A portion of the plurality of first dielectrics 131 located on the first end 150 side may not form through holes. In this case, the signal pin 121 is configured to penetrate only the second dielectric 132 with through holes and the remaining portion of the plurality of first dielectrics 131.

[0069] Coaxial connector 120 can be an SMA (subminiature version A) connector.

[0070] The internal structure 130 is disposed in the first space 111, that is, the inner space formed by the main body 110. The internal structure 130 can be understood as being disposed inside the waveguide.

[0071] The internal structure 130 may also be configured as a stacked structure of a first dielectric 131 and a conductive pattern 140, but may also include a second dielectric 132 that does not include the conductive pattern 140. The structure including the second dielectric 132 is described in the description of the present invention.

[0072] The first dielectric 131 and the second dielectric 132 can be made of the same material, but they do not necessarily have to be the same.

[0073] For example, the first dielectric 131 and the second dielectric 132 may be Teflon, but are not limited thereto.

[0074] A conductive pattern 140 may be configured and formed on one side of the first dielectric 131.

[0075] Here, one side of the first dielectric 131 can be the length direction, the propagation direction of the electromagnetic wave, or the upper direction in the figure.

[0076] The conductive pattern 140 can be used together with a plurality of first dielectrics 131 to form the second signal.

[0077] The first dielectric 131, on which the conductive pattern 140 is configured and formed, can be formed into multiple patterns stacked along its length. This structure can be referred to as a waveguide filled with a metastructure formed inside the waveguide.

[0078] The conductive pattern 140 can be formed with copper (Cu), but is not limited to this.

[0079] The second dielectric 132 may be disposed between the second end 160 and the first dielectric 131. Since the second dielectric 132 does not include the conductive pattern 140 structure, it does not need to be stacked into a pattern, but can be formed as a single layer. The second dielectric 132 occupies the remaining space in the first space 111 other than the space occupied by the first dielectric 131 and the conductive pattern 140.

[0080] The conductive pattern 140 can be configured as a frame shape. Specifically, as shown in Figures 2 and 3, the conductive pattern 140 can be formed with a predetermined thickness along the border of a regular quadrilateral or a right-angled quadrilateral. However, it is not limited to this shape, and various conductive patterns 140 such as ring shapes, triangular shapes, and semi-circular shapes can be formed on the upper surface of the first dielectric 131.

[0081] The size of the conductive pattern 140 can be gradually increased in the direction of the first end 150.

[0082] The plurality of first dielectrics 131 may include a first dielectric with a conductive pattern 140 and a second dielectric without a conductive pattern 140. Here, the first and second dielectrics may not form vias.

[0083] The first-second dielectric can be configured between multiple stacked first-first dielectrics.

[0084] A conductive layer can be formed at the center of both sides of the first dielectric and inside the through hole, and multiple first dielectrics can be electrically connected to each other through the conductive layer.

[0085] The conductive pattern 140 can be a thin film filled between the small right-angled quadrilateral and the large right-angled quadrilateral.

[0086] The conductive pattern 140 can be configured such that its centroidal axis is the same as that of the first dielectric 131, so that it is not biased towards either the first direction or the second direction on one side of the first dielectric 131. Alternatively, the conductive pattern 140 can be configured such that it is biased towards either the first direction or the second direction on one side of the first dielectric 131.

[0087] The first end 150 is attached to one end of the main body 110.

[0088] The first end 150 is formed with a dielectric material and mediates the transmission of electromagnetic wave signals.

[0089] For example, the first end portion 150 may contain sapphire material.

[0090] The first signal injected into the first space 111 through the coaxial connector 120 forms a second signal that is transmitted to the outside through a waveguide composed of the first region 114 and the internal structure 130. The second signal can be transmitted to the outside through the first end 150.

[0091] In addition, when the antenna device 100 of the present invention is used as a heating device, the first end 150 can come into direct contact with human skin.

[0092] The second end 160 is combined with the main body 110 to form a closed form at the other end of the main body 110. However, the second end 160 includes an inlet 161 and an outlet 162, defining a channel for the second space 112 formed inside the main body 110.

[0093] Figures 6 and 7 show the geometrical variations of a portion of the structure of an antenna device 100 according to an embodiment of the present invention. Here, for the purpose of simulating the signal transmission of the antenna device 100, the cooling structure is not included. That is, the second region 115, the second space 112 and the connecting portion 116 in the main body 110, and the water inlet 161 and the water outlet 162 in the second end portion 160 are not included.

[0094] The conductive pattern 140 is formed with a predetermined thickness along the border of a regular quadrilateral.

[0095] The length of one side of the inner quadrilateral of the conductive pattern 140 is x1, and the length of one side of the outer quadrilateral is x2=y2.

[0096] The first dielectric 131 has a first direction length of x3 and a second direction length of y1 that is perpendicular to the first direction.

[0097] Here, the dimensions are designed as x1=7mm, x2=y2=9.5mm, x3=17.4mm, and y1=10mm. The perimeters of the inner and outer quadrilaterals of the conductive pattern 140 are 28mm and 38mm, respectively.

[0098] The length of the main body 110 in the first direction is x4, the length of the second direction is y3, and the length of the third direction that is perpendicular to both the first and second directions is z.

[0099] Here, x4 = 19.4 mm, y3 = 12 mm, and z = 30 mm. The thickness of the main body 110 is d = 1 mm.

[0100] Figure 8 shows a simulation of the electric field propagation characteristics after the internal structure 130 is inserted inside the right-angled quadrilateral waveguide.

[0101] As shown in a portion of the structure of the present invention, the internal structure 130 includes a first dielectric 131 and a conductive pattern 140.

[0102] The conductive pattern 140 contains copper (Cu) and is printed on the first dielectric 131.

[0103] The first dielectric 131 is composed of Teflon, has a thickness of 2 mm, and a relative permittivity εr = 2.4.

[0104] For the internal structure 130, a structure of stacking nine identical first dielectrics 131 with conductive patterns 140 is used.

[0105] As shown in Figure 8, the internal structure 130 is inserted into the open waveguide 118 with open ends.

[0106] The internal structure 130 can be a meta-structure. The calculations related to the parameters S (S-parameters) of the meta-structure are as follows (Mathematical Formula 1) to (Mathematical Formula 5): (Mathematical Formula 1) (Here, k0 is the wave number in free space, f is the frequency, and c is the speed of light in a vacuum); (Mathematical Formula 2) (Here, z is the effective impedance; S11 represents the reflection coefficient, which is the proportion of the incident wave reflected from the device; S21 is the transmission coefficient, which is the proportion of the transmitted signal.) (Mathematical Formula 3) (Here, n is the effective refractive index, d is the maximum size of the elementary structure, and These represent the imaginary part and the real part of the function, respectively. (Mathematical Expression 4) (Here, εeff is the effective dielectric constant); (Mathematical Formula 5) (Here, μeff is the effective permeability).

[0107] Figure 9 shows the parameters based on the frequency of the structure in Figure 8.

[0108] S11 is at its minimum near 2.4 GHz, and S21 is at its maximum near 2.4 GHz. Therefore, it can be concluded that the reflection loss is minimal and the transmission characteristics are good near 2.4 GHz.

[0109] Figure 10 shows the dielectric constant based on the frequency of the structure in Figure 8.

[0110] Figure 11 shows the permeability according to the frequency for the structure in Figure 8.

[0111] The real components of the dielectric constant and permeability are known to become sharply negative around 2.4 GHz and then increase back to positive values.

[0112] Naturally, the dielectric constant of a material is positive during propagation within the material and does not change drastically with frequency. However, in the metastructure such as the internal structure 130 of the present invention, a drastic change occurs near 2.4 GHz, and negative dielectric constant and negative permeability may occur.

[0113] Next, the experimental results for the antenna device 100 shown in Figures 6 and 7 will be explained. Geometric variables are as described above.

[0114] The waveguide formed by the main body 110 is filled with the internal structure 130 and has a small aperture size of 10mm × 17.4mm (0.08λ × 0.14λ, where λ is the wavelength). In the case of conventional waveguides with empty internal structures, a waveguide of 42mm × 89.4mm × 80mm is required to design a waveguide that operates at 2.45GHz. However, the antenna device 100 of the present invention, including the internal structure 130 (substructure), can achieve a design of 12mm × 19.4mm × 30mm for operation at 2.45GHz.

[0115] Typically, the shielding frequency of a right-angled quadrilateral waveguide is as shown in (Mathematical Equation 6): (Mathematical Expression 6) (Here, w refers to the longer side of the right-angled quadrilateral waveguide); Without a metastructure, the TE10 mode is the dominant mode inside the waveguide, making it difficult to design below 61mm. With a metastructure, the TE12 mode is the dominant mode and can be designed with a small opening size of 10mm×17.4mm.

[0116] Figure 12 compares the antenna device 100 (structure A) that replaces Figures 6 and 7 with the same size, the structure with internal structure 130 filled only with dielectric (structure B), and the structure with no internal structure 130 but filled with blank space (structure C).

[0117] In structure B, the dielectric material is Teflon.

[0118] Structure C has a resonant frequency of approximately 12 GHz, structure B has a resonant frequency of 6.4 GHz, and structure A has a resonant frequency of 2.45 GHz. For antenna device 100 including element structures, it is known that a small size is required to achieve a small resonant frequency or the same resonant frequency within the same size.

[0119] The waveguide with a metastructure is designed to achieve the same resonant frequency, and its size is reduced by 98.8% compared to a waveguide filled only with air, thus enabling miniaturized design.

[0120] This miniaturized design means that the antenna device 100 can be effectively applied to RF therapy or treatment systems, such as high-frequency heating devices, in a practical size.

[0121] Furthermore, regarding the electric field distribution in Figure 12, structure A exhibits a stronger upward electric field distribution at close range and a weaker back-side electric field distribution. Therefore, when this invention is used as a heating device, it provides a heating effect only in one direction, thus ensuring not only a therapeutic effect but also the safety of the user or operator.

[0122] Figure 13 shows the prototypes of Figures 6 and 7 and their performance analysis.

[0123] In Figure 13, A is a photograph of the prototype antenna device 100, B is the S-parameters, C is the peak gain, and D and E are a comparison of the relevant simulation data and measurement data of the radiation patterns in the xz plane and yz plane.

[0124] For antenna device 100, it can be seen that impedance matching is achieved at approximately 2.45 GHz, and the reflection loss is basically consistent with the simulation results.

[0125] The peak gain is highest at 2.45 GHz, therefore the radiation efficiency of antenna device 100 is the highest.

[0126] The normalized values ​​in the xz and yz planes mostly converge to 0 under co-polarization, while exhibiting very small values ​​under cross-polarization. This indicates that energy is radiated smoothly in the radiation direction, thus minimizing unnecessary polarization.

[0127] Figure 14 shows the relevant experimental results of the thermal performance of the antenna device 100 according to Figures 6 and 7.

[0128] Figure 14a shows the surface temperature of the pork at various operating powers and times. The antenna device 100 is connected to a 2.45 GHz RF generator via a coaxial connector 120. The antenna device 100 is positioned 4 mm above the pork model, while the temperature sensor is located 4 mm below the pork skin surface. The effective area for microwave heating in the pork model is 18 mm × 14 mm, which can be seen as a very narrow and concentrated region.

[0129] Figure 14b compares the simulated temperature and the measured temperature at a location 4 mm below the skin surface. The simulation was performed using the Sim4Life platform with a human face model, while the measurement results are related to the pork illustrated in Figure 13a. The human face model simulation shows that using 80W and 20W RF power, the temperature can be increased by 35.4°C and 11.6°C, respectively, within 60 seconds.

[0130] Figure 14c shows the results of thermotherapy applied to the face (upper) and abdomen (lower) using antenna device 100. The subject was a 27-year-old male, and the antenna opening was located 5 mm to 8 mm from the face / abdomen. The RF input was 2.45 GHz and 20 W. The temperature of the face / abdomen was approximately 32°C before thermotherapy, but the temperature of the target area rose to approximately 45°C after 60 seconds.

[0131] It can be seen that pork has a similar effect on raising the temperature of a person's face / abdomen. (Table 1) distinguish type frequency (GHz) Invasion or not Power (W) Time required for temperature to rise Target Comparative Example 1 Monopole 2.45 invasion 2.5 10℃ (1500s) Deep tumor Comparative Example 2 dipole 0.434 Non-invasive 5 10℃ (3600s) Superficial tumor Comparative Example 3 electrode 0.448 Non-invasive 200 11.1℃ (600s) subcutaneous fat Comparative Example 4 electrode 0.001 Non-invasive 65 10℃ (180s) Firm skin Example Metastructure 2.45 Non-invasive 20 / 80 11.6 / 35.4℃ (60s) Firm skin

[0132] (Table 1) compares the thermotherapy of the comparative example with the thermotherapy using the antenna device 100 of the present invention.

[0133] Referring to Table 1, when using a low power of 2.45 GHz and 2.5 W to treat deep tumors via invasive methods, a relatively long time of 10°C and 1500 s is required (Comparative Example 1), while non-invasive methods for treating superficial tumors require an even longer time (Comparative Example 2).

[0134] As a non-invasive method, when using a relatively high electrode power of 200W for heat therapy, the temperature can rise by about 10°C in a relatively short period of 600s (Comparative Example 3); with 65W power, the temperature can rise by about 10°C in 180s (Comparative Example 4).

[0135] In comparison, it can be seen from the antenna device 100 of the present invention that with a low power of 20W or 80W, the temperature of the small target area is raised by only 11.6°C or 35.4°C within 60 seconds, thus exhibiting the fastest and most effective heating performance compared to the comparative example.

[0136] The terminology used in this application is for illustrative purposes only and is not intended to limit the scope of the invention. In this application, terms such as "comprising" or "having" should be understood as specifying the presence of features, numbers, steps, actions, components, parts, or combinations thereof as described in the specification, without precluding the possibility of the presence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0137] 100: Antenna device 110: Main Body 111: First Space 112: Second Space 113: Mounting slot 114: Area 1 115: Second Area 116: Connecting part 120: Coaxial connector 121: Signal pin 130: Internal Structure 131: First dielectric 132: Second dielectric 133: Through hole 140: Conductive Pattern 150: First end 160: Second end 161: Inlet 162: Outlet

[0138] Domestic storage information (please note in order of storage institution, date, and number) none

[0139] Overseas storage information (please note in the order of storage country, institution, date, and number) none

Claims

1. An antenna device, comprising: a main body; a signal pin coupled to the main body and transmitting a first signal to an inner side of the main body; an internal structure disposed in a first space formed inside the main body; and a first end portion disposed at one end of the main body; wherein the internal structure generates a second signal to be transmitted to the outside in response to the first signal; the first end portion mediates transmission of the second signal, and the internal structure comprises: a plurality of stacked first-first dielectrics; and conductive patterns formed on each of the plurality of first-first dielectrics and disposed on at least one of two surfaces of the first-first dielectric.

2. The antenna device as claimed in claim 1, wherein, further comprising: the internal structure further comprises a plurality of stacked first-second dielectrics, and no conductive pattern is formed on the plurality of first-second dielectrics.

3. The antenna device as claimed in claim 1, wherein, the conductive pattern is configured in a frame shape.

4. The antenna device as described in claim 3, wherein, the conductive pattern is formed along a border of a right-angled quadrilateral.

5. The antenna device as described in claim 3, wherein, the conductive pattern is formed along a border of a regular quadrilateral.

6. The antenna device as described in claim 3, wherein, the dimension of the conductive pattern gradually increases in a direction toward the first end portion.

7. The antenna arrangement as claimed in claim 1, wherein, the signal pin is inserted into and coupled to the inner side of the main body, and is inserted in a direction perpendicular to a stacking direction of the first-first dielectrics.

8. The antenna arrangement as described in claim 2, wherein, a through hole is formed in a center of the first-first dielectric.

9. The antenna arrangement as described in claim 8, wherein, the signal pin passes through at least one of the through holes.

10. The antenna arrangement as claimed in claim 8, wherein, a conductive layer is formed inside the through hole.

11. The antenna arrangement as claimed in claim 1, wherein, the internal structure further comprises a second dielectric, and the internal structure fills the first space.

12. The antenna arrangement as claimed in claim 1, wherein, the main body comprises: a first region defining a space for stacking a plurality of the first-first dielectrics; and a second region defining, together with the first region, a second space that at least partially surrounds an outline of the first region.

13. The antenna arrangement as described in claim 12, wherein, the main body further comprises a connecting portion connecting the first region and the second region; a cross-section of the second space is formed in a "匚" (C-shaped) shape.

14. The antenna arrangement as described in claim 12, wherein, further comprising: a second end portion disposed at the other end of the main body; the second end portion comprises a water inlet and a water outlet, and the water inlet and the water outlet form paths for supplying and discharging fluid in the second space.

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