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KR-102961960-B1 - Antenna device

KR102961960B1KR 102961960 B1KR102961960 B1KR 102961960B1KR-102961960-B1

Abstract

An antenna device is disclosed. The antenna device of the present invention comprises: a body; a coaxial connector coupled to the body and transmitting a first signal to the inside of the body; one or more dielectric layers stacked in the inner space of the body; and a metal pattern formed on at least one surface of the dielectric layer; wherein the body is formed in the shape of a rectangular box with an open top and includes a separating wall arranged to define two waveguides together with the inner surface, and the dielectric layer is stacked in a first space and a second space separated by the separating wall, respectively, and the stacked dielectric layer and metal pattern in the first space form a second-1 signal transmitted to the outside in response to a first-1 signal in which the first signal is introduced into the first space, and the stacked dielectric layer and metal pattern in the second space form a second-2 signal transmitted to the outside in response to a first-2 signal in which the first signal is introduced into the second space.

Inventors

  • 신재우
  • 이균정
  • 박승우
  • 박동희
  • 조규진
  • 김남영
  • 김은성

Assignees

  • 주식회사 에이피알

Dates

Publication Date
20260507
Application Date
20241230

Claims (6)

  1. body; A coaxial connector coupled to the body and transmitting a first signal to the inside of the body; One or more dielectric layers stacked in the inner space of the body; and A metal pattern formed on at least one surface of the dielectric layer; comprising The above body includes a separating wall arranged to define two waveguides, and The above dielectric layer is stacked in a first space and a second space separated by the above separation wall, respectively, and The stacked dielectric layer and metal pattern of the first space above form a second-1 signal transmitted to the outside in correspondence with the first-1 signal that the first signal is introduced into the first space, and An antenna device characterized in that the stacked dielectric layer and metal pattern of the second space above form a second-second signal transmitted to the outside in response to the first-second signal that the first signal is introduced into the second space.
  2. In paragraph 1, An antenna device characterized by further including a mediating layer that transmits a third signal summed by mediating the first-2 signal and the second-2 signal.
  3. In paragraph 1, An antenna device characterized in that the above-mentioned separating wall is formed extending from a first side wall to a second side wall opposite it, and is formed at a predetermined distance from the bottom surface of the body.
  4. In paragraph 3, The above coaxial connector includes a signal pin inserted through the inside of the body, and An antenna device characterized in that the signal pin is positioned to contact the separation wall.
  5. In paragraph 1, An antenna device characterized in that the metal pattern is formed by line segments having a predetermined thickness along a rectangular border.
  6. In paragraph 1, The first space and the second space are, respectively, The above dielectric layer and the above metal pattern are stacked in a space and an empty space, and An antenna device characterized in that the above empty space has a thickness corresponding to the thickness of the above dielectric layer.

Description

Antenna device The present invention relates to an antenna device. Radiofrequency hyperthermia focuses on raising the temperature of the target area to above 45°C. When the temperature rises to 45°C, collagen in the dermal layer is stimulated, tightening the skin. Skin tightening technology focuses on generating heat in the dermis layer at a depth of about 2 mm to 4 mm. However, most studies on RF hyperthermia have focused on emitting electromagnetic fields using tumor resection or electrodes, which is very inefficient. It is known that the use of electromagnetic waves in skin tightening treatments minimizes discomfort. The issue lies in the large effective area. Since microwaves spread widely when emitted, it becomes difficult to focus on the target area, and there is a possibility that the temperature of unintended areas may rise. Previous studies on RF hyperthermia technologies for skin tightening have utilized electrodes that generate electromagnetic fields. Electrodes for generating electromagnetic fields are advantageous for designing small, portable devices. However, many of these designs do not consider impedance matching, leading to impedance mismatch issues that require higher power or longer treatment times to achieve desired skin-tightening temperatures. FIG. 1 shows an antenna device according to an embodiment of the present invention. FIG. 2 is an exploded view of an antenna device according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of an antenna device according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of an antenna device according to an embodiment of the present invention. FIG. 5 is a cross-sectional view of an antenna device according to an embodiment of the present invention. Figure 6 shows the electric field magnitude distribution according to the distance of an antenna device according to an embodiment of the present invention. The present invention is capable of various modifications and may have various embodiments, and specific embodiments are illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and it should be understood that it includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. In describing the present invention, if it is determined that a detailed description of related known technology may obscure the essence of the present invention, such detailed description is omitted. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 shows an antenna device (100) according to an embodiment of the present invention. FIG. 2 is an exploded view of an antenna device (100) according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of an antenna device (100) according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of an antenna device (100) according to an embodiment of the present invention in a direction perpendicular to the cross-section of FIG. 3. FIG. 5 is a cross-sectional view of an antenna device (100) according to an embodiment of the present invention in a direction perpendicular to both the cross-sections of FIG. 3 and FIG. 4. An antenna device (100) according to an embodiment of the present invention will be described with reference to FIGS. 1 to 5. An antenna device (100) according to one embodiment of the present invention includes a body (110), a coaxial connector (120), a dielectric layer (130), a metal pattern (131), and a mediating layer (140). The body (110) defines the outer and inner surfaces of the antenna device (100). The outer surface of the body (110) may be in the shape of a rectangular box with an open top. The body (110) includes a partition wall (113). The partition wall (113) may be a partition shape arranged in the longitudinal direction that divides the inner space of the body (110) into two equal parts. The partition wall (113) is formed in a shape that connects from one side wall surface of the body (110) to the opposite side wall surface. The spaces divided by the partition wall (113) are each called the first space (111) and the second space (112). However, the lower end of the separation wall (113) may be positioned at a predetermined distance from the inner bottom surface of the body (110). A dielectric material may be positioned between the lower end of the separation wall (113) and the inner bottom surface of the body (110). Between the lower end of the separation wall (113) and the inner bottom surface of the body (110), the lowest end of the dielectric layer (130) applied to the first space (111) and the second space (112), respectively, and the empty space between them may be positioned. However, a signal pin (121) may pass through the empty space or the dielectric material. Two waveguides can be defined