WO2020256498A1 - 자기 쌍극자 공진을 이용하여 생체 정보를 측정하는 안테나 장치 - Google Patents
자기 쌍극자 공진을 이용하여 생체 정보를 측정하는 안테나 장치 Download PDFInfo
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- WO2020256498A1 WO2020256498A1 PCT/KR2020/008013 KR2020008013W WO2020256498A1 WO 2020256498 A1 WO2020256498 A1 WO 2020256498A1 KR 2020008013 W KR2020008013 W KR 2020008013W WO 2020256498 A1 WO2020256498 A1 WO 2020256498A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/242—Detecting biomagnetic fields, e.g. magnetic fields produced by bioelectric currents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring glucose, e.g. by tissue impedance measurement
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/155—Devices specially adapted for continuous or multiple sampling, e.g. at predetermined intervals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/27—Adaptation for use in or on movable bodies
- H01Q1/273—Adaptation for carrying or wearing by persons or animals
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
Definitions
- a simple method to determine the severity of these adult diseases is to measure the biological components in the blood.
- the measurement of biological components can determine the amount of various components in the blood, such as blood sugar, anemia, and blood clotting, so it is easy to determine whether the level of a specific component is in a normal or abnormal area without going to the hospital. There is an advantage that it is possible.
- One of the easiest ways to measure biological components is to inject blood collected from a fingertip into a test strip and then quantitatively analyze the output signal using an electrochemical or photometric method. This method can display the amount of the corresponding component in a measuring instrument, so it is specialized knowledge. It is suitable for ordinary people who do not have.
- An antenna device includes: first and second conductors spaced apart from each other along a part of a boundary of a first region on a first plane; Third conductors and fourth conductors spaced apart from each other along a part of a boundary of a second region on a second plane spaced apart from the first plane in parallel; Fifth and sixth conductors spaced apart from each other along a part of a boundary of a third area on a third plane spaced apart from the second plane in parallel; A first connection part connecting a first end of the first conductor and a first end of the third conductor; A second connection part connecting the first end of the second conductor and the first end of the fourth conductor; A third connection part connecting a second end of the third conductor and a second end of the fifth conductor; And a fourth connection part connecting the second end of the fourth conductor and the second end of the sixth conductor.
- a second end of the first conductor and a second end of the second conductor are connected to an antenna port, and the first conductor and the second conductor are the antenna port and the first region. While passing through the center point of, are disposed opposite to each other based on a virtual plane perpendicular to the first plane, the third conductive wire and the fourth conductive wire are disposed opposite to each other based on the virtual plane, and the fifth The conductive wire and the sixth conductive wire may be disposed opposite to each other based on the virtual plane.
- An antenna device includes an antenna port to which the first and second conductors are connected; And it may further include a feeder (feeder) supplying a feeding signal (feed signal) through the antenna port.
- a feeder feeder
- one or a combination of two or more of the first conductor, the second conductor, the third conductor, the fourth conductor, the fifth conductor, and the sixth conductor is a target frequency (target frequency). frequency) may have a length of 1/4 of the wavelength.
- the shape of the first area, the second area, and the third area of the antenna device may be one of a polygon and a circle.
- the first region, the second region, and the third region of the antenna device according to an exemplary embodiment may have the same size and shape when viewed in a direction perpendicular to the first plane.
- the first connection part and the second connection part of the antenna device according to an embodiment may be disconnected from each other, and the third connection part and the fourth connection part may be separated from each other.
- a virtual straight line from the feeding part toward the first connection part forms an angle less than a critical angle with respect to the virtual plane
- a virtual straight line from the feeding part toward the second connection part May form an angle less than or equal to a critical angle with respect to the virtual plane
- conductors disposed on a reference plane located at the center among a plurality of planes spaced apart from each other in parallel may generate resonance by a magnetic dipole in response to a feeding signal. I can.
- conductors disposed on one or more planes positioned at one side with respect to the reference plane generate resonance by a first electric dipole in response to the feeding signal, and determine the reference plane.
- Conductors disposed on one or more planes positioned on the other side as a reference may generate resonance by a second electric dipole having a polarity opposite to the first electric dipole in response to the feeding signal.
- the connecting portions of the antenna device according to an embodiment may connect between conductive lines through a via hole.
- the fifth and sixth conductors may be electrically connected to each other.
- the antenna device comprises at least one additional electrically connected to the fifth and sixth conductors that are spaced apart from each other along a part of the boundary of the region on one or more additional planes spaced apart from the third plane in parallel. May include a lead wire.
- Conductors of the antenna device according to an embodiment may be printed on a surface of a printed circuit board (PCB) having a cylindrical shape.
- PCB printed circuit board
- the resonant frequency of the antenna device may change in response to a change in concentration of an analyte to be targeted around the antenna device.
- the antenna device may further include a communication unit that transmits biometric parameter data regarding a degree of change of a resonant frequency of the antenna device and a measured scattering parameter to an external device.
- the first conductor when a feeding signal is supplied to the antenna device, the first conductor forms a capacitive coupling with the third conductor, and the third conductor forms a capacitive coupling with the fifth conductor.
- the second conductor may form a capacitive coupling with the fourth conductor, and the fourth conductor may form a capacitive coupling with the sixth conductor.
- An antenna device includes: first conductive lines disposed along a part of a first area on a first plane; Second conductive wires disposed along a part of a second area on a second plane spaced apart from the first plane in parallel and forming a capacitive coupling with the first conductive wires; And a third conductor disposed along a portion of a third area on a third plane spaced parallel from the second plane and forming a capacitive coupling with the second conductors, wherein the first conductors are connected to the antenna port.
- the resonance due to the magnetic dipole and the resonance due to the electric dipole can be separately formed.
- An antenna device includes: a first conductive wire disposed on a reference plane positioned at a center among a plurality of planes spaced apart from each other in parallel to generate resonance by a magnetic dipole; A second conducting wire disposed on one or more planes positioned on one side of the reference plane to generate resonance by a first electric dipole; And a third conducting wire disposed on one or more planes positioned on the other side with respect to the reference plane to generate resonance by a second electric dipole having a polarity opposite to the first electric dipole.
- 1 shows a general shape of a dipole antenna.
- FIG. 2 shows an antenna element 200 having a shape of a loop.
- FIG. 3 shows an antenna element in which two dipole antennas are disposed adjacent to each other.
- 5A illustrates a shape of an antenna device according to an embodiment.
- 5B illustrates a direction of a current flowing in the antenna device according to an exemplary embodiment.
- FIG. 6 illustrates a shape of an antenna device according to an embodiment.
- FIG. 7 illustrates a cylindrical sensor including an antenna device according to an embodiment.
- FIG. 8 illustrates a substrate-type sensor including an antenna device according to an exemplary embodiment.
- 9A to 9B are diagrams illustrating a shape of an in vivo biosensor including an antenna device according to an exemplary embodiment.
- 10A to 10C show frequency response characteristics to electromagnetic waves according to the shape of a sensor.
- 11A illustrates a change in a resonant frequency of an antenna device according to a change in a concentration of an analyte surrounding an antenna device according to an exemplary embodiment.
- 11B shows a change in a resonance frequency according to a change in a relative permittivity.
- 12A to 12C show frequency response characteristics for magnetic dipoles and electric dipoles.
- FIG. 14 is a block diagram showing a blood glucose measurement system according to an embodiment.
- first, second, A, B, (a) and (b) may be used. These terms are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the term.
- an in vivo biometric sensor capable of semi-permanently measuring blood sugar.
- the in-body bio sensor may also be referred to as an invasive bio sensor, an implantable bio sensor, and an implantable bio sensor.
- the in vivo biometric sensor may be a sensor that senses a target analyte using electromagnetic waves.
- the in vivo biosensor may measure biometric information associated with a target analyte.
- the target analyte is a material associated with a living body, and may also be referred to as a biological material.
- the target analyte is mainly described as blood sugar, but is not limited thereto.
- the biometric information is information related to a subject's biological component, and may include, for example, a concentration and a numerical value of an analyte.
- the biometric information may include a blood sugar level.
- the in vivo biosensor may measure a biometric parameter (hereinafter, referred to as “parameter”) associated with the above-described biocomponent, and determine biometric information from the measured parameter.
- the parameter may represent a circuit network parameter used to analyze a biometric sensor and/or a biometric sensing system, and for convenience of description, a scattering parameter is mainly described below as an example. It is not limited to this.
- the parameter for example, an admittance parameter, an impedance parameter, a hybrid parameter, and a transmission parameter may be used.
- transmission coefficient and reflection coefficient can be used.
- the resonance frequency calculated from the above-described scattering parameter may be related to the concentration of the target analyte, and the biosensor may predict blood sugar by detecting a change in the transmission coefficient and/or the reflection coefficient.
- the body biosensor may include a resonator assembly (eg, an antenna).
- a resonator assembly eg, an antenna
- the resonant frequency of the antenna may be expressed as a capacitance component and an inductance component as shown in Equation 1 below.
- Equation 1 f denotes a resonance frequency of an antenna included in a biometric sensor using electromagnetic waves
- L denotes an inductance of the antenna
- C denotes a capacitance of the antenna.
- the capacitance C of the antenna is a relative dielectric constant as shown in Equation 2 below. Can be proportional to
- Antenna relative permittivity May be affected by the concentration of the analyte in the surrounding area. For example, when an electromagnetic wave passes through a material having an arbitrary dielectric constant, changes in amplitude and phase may occur in the transmitted electromagnetic wave due to radio wave reflection and scattering. Since the degree of reflection and/or scattering of electromagnetic waves varies depending on the concentration of the target analyte present around the biosensor, the relative permittivity It can also be different. This can be interpreted as the formation of a bio-capacitance between the bio-sensor and the target analyte due to the fringing field caused by the electromagnetic wave radiated by the bio-sensor including the antenna. Relative permittivity of the antenna according to the concentration change of the target analyte Because this changes, the resonance frequency of the antenna also changes. In other words, the concentration of the target analyte may correspond to the resonance frequency.
- the in vivo sensor may radiate an electromagnetic wave while sweeping a frequency, and measure a scattering parameter according to the radiated electromagnetic wave.
- the in vivo biosensor may determine a resonant frequency from the measured scattering parameter and estimate a blood sugar level corresponding to the determined resonant frequency.
- the biosensor in the body can be inserted into the subcutaneous layer and can predict the blood sugar that has diffused from the blood vessel to the interstitial fluid.
- the in vivo biometric sensor can estimate biometric information by determining the degree of a frequency shift of the resonance frequency. For more accurate measurement of the resonance frequency, a quality factor can be maximized.
- an antenna structure with an improved quality index in an antenna device used for a biometric sensor using electromagnetic waves will be described.
- 1 shows a general shape of a dipole antenna.
- the general dipole antenna 100 may include two conductive wires connected to the power supply unit 120.
- the two straight wires may be connected through the feeding part 120.
- the first and second conductors 111 and 112 of the dipole antenna 100 do not face each other, and may be connected to the power supply unit 120 in a straight manner.
- the straight may refer to a shape in which the first and second conductors 111 and 112 of the dipole antenna 100 extend in opposite directions to each other.
- the feeder 120 may supply a feeding signal to the dipole antenna through a port.
- the feeding signal is a signal fed to the dipole antenna, and may be an oscillation signal oscillating at a target frequency.
- the power supply unit 120 may supply a feeding signal so that current flows in the same direction to the first conductor line 111 and the second conductor line 112 of the dipole antenna having a linear shape.
- the current of the first conductor line 111 of the dipole antenna may flow in the direction 130 at an arbitrary time point, and at the same time, the current of the second conductor line 112 of the dipole antenna may also be in the same direction 130 ) Can flow.
- a current in a direction opposite to the direction 130 in the first conductor line 111 and the second conductor line 112 of the dipole antenna may flow simultaneously.
- An electric dipole may be formed by a current flowing through the first conductor line 111 of the dipole antenna 100, and similarly, an electric dipole may be formed by a current flowing through the second conductor line 112. Since the directions of current flowing through the first and second conductors of the dipole antenna are the same, the directions of the electric dipole moments of the electric dipoles formed by the first and second conductors may be the same.
- FIG. 2 shows an antenna element 200 having a shape of a loop.
- the antenna element may have a closed loop (closed loop) shape.
- the antenna elements 200 are connected to each other, and a first conductor 211, a second conductor 212, a third conductor 213, and a fourth conductor having a circular shape. It may include a conducting wire 214.
- the first conductive wire 211 and the fourth conductive wire 214 are disposed opposite to each other based on the virtual straight line 281 passing through the center point 270 of the circle and the antenna port 221, and the second conductive wire 212
- the third conductive wire 213 may be disposed opposite to each other based on the virtual straight line 281.
- first conductor 211 and the second conductor 212 pass through the center point 270 of the circle and are disposed opposite to each other based on an imaginary straight line 282 that is orthogonal to the virtual straight line 281.
- third conductive wire 213 and the fourth conductive wire 214 may be disposed opposite to each other based on the virtual straight line 282.
- the antenna element 200 may further include a feeding unit 221 for supplying a feeding signal to the antenna through the port.
- the power supply 221 may be disposed between the first conductor 211 and the fourth conductor 214.
- the feeding signal is supplied to the antenna element 200 through the power supply unit 221, the direction of the current flowing through each conductor will be described.
- the lengths of the first conductor 211, the second conductor 212, the third conductor 213, and the fourth conductor 214 are fed from the feeder 221 It may have a length of 1/4 of the wavelength corresponding to the frequency of the signal.
- the power supply unit 221 supplies a feeding signal of a sinusoidal wave
- 1 of the wavelength from the power supply unit 221 1 of the wavelength from the power supply unit 221
- the intensity of the current flowing to the point corresponding to /4 may be 0.
- current may flow in the direction 231 in the first conductive line 211 and the current may flow in the direction 231 in the fourth conductive line 214.
- FIG. 3 shows an antenna element 300 in which two dipole antennas are disposed adjacent to each other.
- the antenna device 300 may include a first dipole antenna and a second dipole antenna.
- the first dipole antenna may include a first conductor 311 and a second conductor 312, and the second dipole antenna may include a third conductor 313 and a fourth conductor 313.
- the first conductor 311 of the first dipole antenna and the third conductor 313 of the second dipole antenna may be disposed on the first plane 381.
- the first conductive wire 311 and the third conductive wire 313 may be disposed opposite to each other with respect to a virtual plane 390 perpendicular to the first plane 381.
- the virtual plane 390 may be positioned between the first dipole antenna and the second dipole antenna.
- the second lead 312 of the first dipole antenna and the fourth lead 314 of the second dipole antenna may be disposed on the second plane 382.
- the second conductive wire 312 and the fourth conductive wire 314 may be disposed opposite to each other based on the virtual plane 390.
- Each of the first dipole antenna and the second dipole antenna may have the same length as a wavelength corresponding to a target frequency.
- the closed loop shape is a circular shape
- each of the first conductor 311 and the second conductor 312 may have a length corresponding to half of a wavelength corresponding to the target frequency.
- each of the third conductive wire 313 and the fourth conductive wire 314 may have a length corresponding to half of a wavelength corresponding to the target frequency.
- the target frequency is a frequency at which the antenna device is to be operated, for example, when the antenna device inserted into the body forms a biocapacitance for a target analyte of a given concentration in the body, It may represent a frequency at which the antenna device is to be resonated.
- the first dipole antenna may include a first feeding unit 321, and the second dipole antenna may include a second feeding unit 322.
- the first dipole antenna may have a shape in which the antenna element forming the closed loop shape shown in FIG. 2 is folded in half.
- the second dipole antenna may also have a shape in which an antenna element forming a closed loop shape is folded in half.
- the first dipole antenna may have a folded shape at points on a conductive line separated by a length corresponding to 1/4 of a wavelength from the first power supply unit 321.
- the first conductive wire 311 and the second conductive wire 312 of the first dipole antenna are disposed parallel to each other on a plane spaced apart from each other, and may be connected through connection portions having a via hole.
- the first conductor 311 and the second conductor 312 may be symmetrical with respect to an imaginary plane between the first plane 381 and the second plane 283.
- the second dipole antenna may have a folded shape at points on a conductive line separated by a length corresponding to 1/4 of a wavelength from the second power feeding unit 322.
- the first power supply unit 321 may supply power to the first dipole antenna
- the second power supply unit 322 may supply power to the second dipole antenna.
- a feeding signal is supplied to the antenna element 300 through the feeders 321 and 322, a direction of a current flowing through each conductor will be described.
- the current circulation direction is a direction of a current flowing through a virtual closed loop on a plane and/or a part of a virtual closed loop in the antenna element, and is in the planes in which the conductors are arranged. When viewed from a vertical direction, it may represent a direction in which current circulates in a clockwise or counterclockwise direction. The reference of the clockwise or counterclockwise direction may be switched depending on the case of viewing the plane from above, from the bottom, and the polarity of the AC current.
- the first circulation direction 331 and the second circulation direction 332 of FIG. 3 are clockwise at the point in time when the feeding units 321 and 322 supply the maximum current intensity of which the polarity of the feeding signal is positive. Can be
- Electromagnetic waves generated by the first magnetic dipole and electromagnetic waves generated by the second magnetic dipole may generate constructive interference.
- the resonance caused by the magnetic dipole has a higher quality factor than the resonance caused by the electric dipole, and the quality factor can be expressed as the following equation.
- Q may be a quality factor
- R L may be a magnitude of loss resistance
- R r may be a magnitude of radiation resistance
- the frequency response characteristic 400 shows a frequency response characteristic for an electromagnetic wave according to the shape of an antenna element. By measuring the parameter while sweeping the frequency, a frequency response characteristic for the scattered electromagnetic wave can be obtained.
- the frequency response characteristic may be a reflection coefficient among scattering parameters as shown in FIG. 4.
- the first reflection coefficient curve 410 represents the frequency response characteristic of the straight dipole antenna of FIG. 1.
- the second reflection coefficient curve 420 represents a frequency response characteristic for an antenna element having a closed loop shape of FIG. 2.
- the third reflection coefficient curve 430 represents a frequency response characteristic of the antenna element 300 forming a magnetic dipole of FIG. 3.
- the quality factor of the antenna element 300 forming a magnetic dipole may be relatively high.
- 5A illustrates a shape of an antenna device 501 according to an embodiment.
- the antenna device 501 may be a wire-type sensor.
- the antenna device 501 according to an embodiment includes a first conductor 511 and a second conductor 512 and a first plane 581 spaced apart from each other along a part of a boundary of a first area on the first plane 581.
- a fifth conductive wire 515 and a sixth conductive wire 516 may be spaced apart from each other along a part of the boundary of the third area on the third plane 583.
- the antenna device 501 includes a first connection part 521 connecting a first end of the first conductor 511 and a first end of the third conductor 513, and a first connection portion of the second conductor 512.
- the second connection part 522 connecting the end and the first end of the fourth conductor 514, the second end of the third conductor 513 and the second end of the fifth conductor 515
- a third connection part 523 and a fourth connection part 524 connecting the second end of the fourth conductor 514 and the second end of the sixth conductor 516 may be included.
- the first end may indicate a distal end based on the antenna port
- the second end may indicate a proximal end based on the antenna port.
- a second end of the first conductor 511 and a second end of the second conductor 512 may be connected to an antenna port.
- the first and second conductors 511 and 512 are disposed opposite to each other based on a virtual plane 590 perpendicular to the first plane 581 while passing through the antenna port and the center point 570 of the first region.
- the third conductive wire 513 and the fourth conductive wire 514 are disposed opposite to each other based on the virtual plane 590, and the fifth conductive wire 515 and the sixth conductive wire 516 define a virtual plane 590. They can be placed on opposite sides of each other as a reference.
- the fifth and sixth conductors 515 and 516 may be electrically connected to each other.
- the antenna device 501 includes an antenna port to which the first and second conductors 511 and 512 are connected, and a feeder 540 that supplies a feed signal through the antenna port. It may further include.
- the power supply unit 540 may supply electric power to the antenna device, thereby allowing current to flow through each conductor.
- the first conductor 511 forms a capacitive coupling with the third conductor 513
- the third conductor 513 is A capacitive coupling is formed with the fifth conductor 515
- the second conductor 512 forms a capacitive coupling with the fourth conductor 514
- the fourth conductor 514 forms a capacitive coupling with the sixth conductor 516 Can form sexual bonds.
- the antenna device 501 includes a first conductor 511 and a second conductor 512 and a first plane 581 disposed along a part of a first area on a first plane 581.
- Conductive wire 514 arranged along a part of the third area on the third plane 583 spaced parallel from the second plane 582, and capacitively coupled with the third conductive wire 513 and the fourth conductive wire 514
- a fifth conductive wire 515 and a sixth conductive wire 516 may be included.
- One or a combination of two or more of 516 may have a length of 1/4 of a wavelength corresponding to a target frequency.
- each of the first conductor 511, the second conductor 512, the third conductor 513, the fourth conductor 514, the fifth conductor 515, and the sixth conductor 516 has a wavelength Can have a length of 1/4 of.
- the wavelength corresponding to the target frequency may represent a guide wavelength.
- the wavelength in the air and the wavelength in the tube may have a relationship as shown in Equation 4 below.
- Is the wavelength in the hall Is the wavelength in the air, May represent the dielectric constant of the medium in the tube.
- a wavelength corresponding to the target frequency may be changed according to the dielectric constant of the material in the tube.
- the length of each wire of the antenna device 501 is 1/4 of a wavelength corresponding to the target frequency, the length of the wire of the antenna device can be reduced by increasing the dielectric constant of the medium in the tube.
- the shape of the first area, the second area, and the third area may be one of a polygon and a circle.
- the first conductor 511 and the second conductor 512 have a shape corresponding to a part of the circumference on the first plane 581 Can be placed along.
- the third conductive wire 513 and the fourth conductive wire 514 may be disposed along a shape corresponding to a part of the circumference on the second plane 582.
- the fifth conductive wire 515 and the sixth conductive wire 516 may be disposed along a shape corresponding to a part of the circumference on the third plane 583.
- the first conductor 511 and the second conductor 512 have a shape corresponding to a part of the polygon on the first plane 581.
- a radius of the first region, the second region, and the third region may have a length of 2.4 mm, and a distance between the first region and the third region may be 0.6 mm.
- first region, the second region, and the third region may have a closed loop shape, and each of the conductive wires may be arranged in a shape corresponding to the region.
- the first region, the second region, and the third region may have the same size and shape when viewed in a vertical direction from the first plane 581.
- the antenna device 501 may supply power to each of the conductive wires using one antenna port.
- the antenna device 501 may include conductive wires connected to each other by connection parts. Power can be supplied to each of the leads using one port. For example, from the first terminal of the antenna port, the first conductor 511, the third conductor 513, the fifth conductor 515, the sixth conductor 516, the fourth conductor 514, and the second conductor ( 512), and an electrical path sequentially connected to the second terminal of the antenna port may be formed.
- first end of the first conductor 511 and a first end of the second conductor 512 may be separated from each other.
- the first conductor line 511 may be connected to the first connection part 521
- the second conductor line 512 may be connected to the second connection part 522.
- the first connection part 521 and the second connection part 522 may be disconnected from each other.
- the third connection part 523 and the fourth connection part 524 may also be separated from each other.
- a virtual straight line from the power supply unit 540 toward the first connection unit 521 may form an angle less than or equal to a critical angle with respect to the virtual plane 590.
- a virtual straight line from the power supply unit 540 toward the second connection unit 522 may form an angle less than or equal to a critical angle with respect to the virtual plane 590.
- the first connection part 521 and the second connection part 522 may be symmetrically disposed with respect to the virtual plane 590.
- a virtual straight line from the power supply unit 540 toward the first connection unit 521 forms an angle of 5 degrees with respect to the virtual plane 590, and goes from the power supply unit 540 to the second connection unit 522
- the virtual straight line may form an angle of 5 degrees with respect to the virtual plane 590.
- 5B illustrates a direction of a current flowing in the antenna device according to an exemplary embodiment.
- a first lead 511, a second lead 512, a third lead 513, a fourth lead 514, a fifth lead 515, and a sixth lead of the antenna device 502 shown in FIG. 5A 516 may have a length of 1/4 of the wavelength corresponding to the target frequency.
- the power supply unit 540 of the antenna device may supply power (eg, a feeding signal) to the antenna device 502.
- 5B is a plan view of unfolded conductors of the antenna device 502 illustrated in FIG. 5A for analysis of the current direction. For reference, in the present specification, the direction of the current and/or the direction of circulation is interpreted as being reversed when the polarity of the current is opposite.
- FIG. 5B shows a current graph at a point in time when the intensity of the current flowing at a point separated by 1/8 of the wavelength from the power supply unit 540 is zero.
- Current may flow in a clockwise direction in a section of a wire from the power supply unit 540 to a point separated by 1/8 of a wavelength (hereinafter, referred to as '1/8 wavelength point'). Since the current polarity is reversed based on the 1/8 wavelength point, it can be interpreted that the circulation direction is also reversed.
- the current flows in one circulation direction (counterclockwise in FIG. 5B), so that the third conductor 513 and the fourth conductor Resonance according to a magnetic dipole may be generated by the circulating current flowing through 514.
- current flows in line symmetry based on the 1/8 wavelength point, and the same first linear direction (for example, In FIG. 5B, it can be interpreted that current flows in a direction from bottom to top.
- the first conductor 511 and the second conductor 512 may each operate as a dipole antenna through which current flows in a first linear direction, and may generate resonance due to a first electric dipole. .
- the current flows in line symmetry based on the 5/8 wavelength point, opposite to the first linear direction. It can be interpreted that the current flows in the second linear direction (for example, in a direction from top to bottom in FIG.
- the fifth conductor 515 and the sixth conductor 516 may each operate as a dipole antenna through which current flows in the second linear direction, and may generate resonance due to the second electric dipole.
- the first electric dipole and the second electric dipole may have an electric dipole moment of opposite polarity.
- the antenna device generates resonance by a magnetic dipole in response to a feeding signal in response to a feeding signal by conducting wires disposed on a reference plane located at the center of a plurality of planes spaced apart from each other ( generate).
- conductors disposed on one or more planes located on one side with respect to a reference plane generate resonance by a first electric dipole in response to a feeding signal, and the other side with respect to the reference plane.
- Conductors disposed on one or more planes positioned at may generate resonance by a second electric dipole having a polarity opposite to the first electric dipole in response to a feeding signal.
- the conductors arranged on the reference plane increase or decrease the intensity of the magnetic dipole due to the current flowing along the first circulation direction, and increase or decrease the intensity of the magnetic dipole due to the current flowing along the second circulation direction. Increasing, and decreasing can be repeated.
- Conducting wires arranged on the remaining planes may repeatedly increase and decrease the intensity of the electric dipole due to current flowing along the first and second linear directions.
- electric dipoles having opposite polarities may be formed in planes located opposite to each other with respect to the reference plane.
- the antenna device 501 performs resonance by a magnetic dipole having a high quality factor, and 2 by the first electric dipole and the second electric dipole. It is possible to form individual resonances.
- the antenna device 501 may exhibit at least three resonant frequencies.
- FIG. 6 illustrates a shape of an antenna device according to an embodiment.
- the fifth and sixth conductors may be electrically connected to each other.
- the first end of the fifth conductor and the first end of the sixth conductor of the antenna device may be connected to each other.
- FIG. 5A described above an example in which the first end of the fifth conductor and the first end of the sixth conductor of the antenna device are physically directly connected has been described, and in FIG. 6, an example of indirect connection through an additional conductor is described.
- the antenna device 600 may further include an additional conductor wire in the antenna device 501 of FIG. 5A.
- the antenna device 600 includes a seventh conductor 631, an eighth conductor 632, and a fourth conductor spaced apart from each other along a part of the boundary of the fourth area on the fourth plane 684 spaced apart from the third plane.
- a ninth conductive wire 633 and a tenth conductive wire 634 may be further provided along a part of the boundary of the fifth area on the fifth plane 685 spaced parallel from the plane.
- the antenna device 600 includes a fifth connection part 651 connecting a first end of a fifth conductor and a first end of the seventh conductor, a first end of the sixth conductor, and A sixth connecting portion 652 connecting the first end of the eighth conductive line 632, a seventh connecting portion 652 connecting the second end of the seventh conductive line 631 and the second end of the ninth conductive line 633
- the connection part 653 may further include an eighth connection part 654 connecting the second end of the eighth conductor 632 and the second end of the tenth conductor 634.
- the antenna device includes conducting wires spaced apart from each other along a part of the boundary of the region on one or more additional planes spaced in parallel from the third plane, It may contain additionally.
- the antenna device may include conducting wires disposed on 2n+1 planes spaced apart from each other in parallel in order to realize a resonance frequency by a magnetic dipole.
- n may represent a natural number of 1 or more.
- the length of each conductive wire may have 1/4 of the wavelength, but is not limited thereto. The lengths of the conductors may differ slightly from 1/4 of the wavelength.
- FIG. 7 illustrates a cylindrical sensor including an antenna device according to an embodiment.
- the cylindrical sensor 700 may represent a sensor printed on the surface of a printed circuit board (PCB) 760 in which the antenna device 710 according to an embodiment has a shape of a side surface of a cylinder.
- the antenna device 710 may be the antenna device shown in FIG. 5A.
- the printed circuit board 760 may have a hollow cylinder shape.
- Conductive parts and connection parts of the antenna device 710 may be printed on a printed circuit board. Connections may also be made of conductors.
- the conductors and connections of the antenna element are printed on a flat flexible printed circuit board (FPCB), and the FPCB on which the antenna element is printed is rolled in a cylindrical shape so that the terminals of the antenna port are disposed adjacent to each other.
- the cylindrical sensor 700 can be manufactured by being rolled.
- FIG. 8 illustrates a substrate-type sensor including an antenna device according to an exemplary embodiment.
- FIG. 8 illustrates a substrate-type sensor 800 in which the antenna device 810 is printed on a multilayered printed circuit board (PCB) 870 according to an exemplary embodiment.
- the antenna device 810 may be the antenna device shown in FIG. 5.
- the first and second conductors of the antenna device may be disposed on the first surface 881 of the substrate 870, and the fifth and sixth conductors are the second surface 882 opposite to the first surface 881. ) Can be placed.
- the third and fourth conductors may be disposed on the third surface 883 between the first surface 881 and the second surface 882. Each side can be composed of layers.
- the first connection part, the second connection part, the third connection part, and the fourth connection part of the antenna device 810 may connect the conductive wires through a via hole.
- Each of the first and second conductors of the antenna device 810 may be connected to an antenna port.
- the antenna port may be connected to the coaxial cable 890.
- the coaxial cable 890 may include an inner conductor 891 and an outer conductor 892.
- the inner conductor 891 may be connected to the second end of the first conductor of the antenna device 810
- the outer conductor 892 may be connected to the second end of the second conductor of the antenna device 810.
- the coaxial cable may supply power to the antenna device 810 using the inner conductor 891 and the outer conductor 892.
- the second end of the first wire may be an input port of the antenna port
- the second end of the second wire may be an output port of the antenna port.
- 9A to 9B are diagrams illustrating a shape of an in vivo biosensor including an antenna device according to an exemplary embodiment.
- 9A may show a perspective view of a sensor according to an embodiment.
- 9B is a front view of a sensor according to an embodiment.
- the printed circuit board sensor 900 including an antenna device may sense a target analyte using an electromagnetic wave in a body.
- 9A and 9B show a test apparatus 901 accommodating water around the printed circuit sensor 900 for testing.
- the printed circuit sensor 800 of FIG. 8 may be accommodated in the cylindrical inner space 992.
- a cylindrical space 991 having a larger diameter than the cylindrical inner space 992 may surround the cylindrical inner space 992.
- a change in dielectric constant according to a temperature change may be observed.
- 10A to 10C show frequency response characteristics to electromagnetic waves according to the shape of a sensor.
- the frequency response characteristic may be a reflection coefficient among scattering parameters.
- the frequency response characteristic 1001 of FIG. 10A may represent a frequency response characteristic for an electromagnetic wave according to the wire-type sensor 501.
- the frequency response characteristic 1002 of FIG. 10B may represent a frequency response characteristic to an electromagnetic wave according to the substrate-type sensor 800.
- the frequency response characteristic 1003 of FIG. 10C may represent a frequency response characteristic of an electromagnetic wave according to the sensor 901 of FIG. 9A.
- the resonance frequency may be obtained by the frequency response characteristic, and the resonance frequency may mean a frequency at which a reflection coefficient is smaller than that of the surrounding frequency.
- 11A illustrates a change in a resonant frequency of an antenna device according to a change in a concentration of an analyte surrounding an antenna device according to an exemplary embodiment.
- the antenna device may include conductive wires 1111 and 1112 spaced apart from each other.
- the conductive wire 1111 may correspond to the first connection part 521 of the antenna device 501 illustrated in FIG. 5A
- the conductive wire 1112 may correspond to the second connection part 522.
- this is an example for convenience of description, and a similar description may be applied to other connecting portions spaced apart from each other.
- a strong electric field may be generated between the conductive wire 1111 and the conductive wire 1112.
- a capacitive coupling may be formed between the conductive wire 1111 and the conductive wire 1112.
- a fringing field having a relatively small intensity of an electric field may be formed in a three-dimensional space around the conductive wire 1111 and the conductive wire 1112.
- the biocapacitance may change between the sensor and the target analyte.
- the concentration of the analyte is the relative permittivity of the antenna according to the change in the surrounding concentration. Is changed, and the resonant frequency of the antenna may also change. Accordingly, the concentration of the target analyte can be calculated by measuring the change in the resonant frequency of the antenna.
- 11B shows a change in a resonance frequency according to a change in a relative permittivity.
- the graph 1110 represents a resonance frequency due to a magnetic dipole.
- the graph 1120 represents a resonant frequency due to an electric dipole.
- the degree of transition of the resonance frequency due to the magnetic dipole and the degree of transition of the resonance frequency due to the electric dipole are different from each other. For example, as the relative dielectric constant of the analyte increases, the difference between the resonance frequency of the magnetic dipole and the resonance frequency of the electric dipole decreases.
- 12A to 12C show frequency response characteristics for magnetic dipoles and electric dipoles.
- a sensor including an antenna device may independently generate resonance with respect to a magnetic dipole and an electric dipole.
- 12A to 12C show frequency response characteristics according to the shape of a sensor. By measuring the moment for each dipole while sweeping the frequency, a frequency response characteristic for each dipole can be obtained.
- the frequency response characteristic may represent the intensity of a moment.
- the frequency response characteristic 1201 of FIG. 12A may represent a frequency response characteristic for a dipole according to the wire-type sensor 501.
- the graph 1211 and the graph 1212 may represent a frequency response characteristic of an electric dipole, and the graph 1221 and the graph 1222 may represent a frequency response characteristic of a magnetic dipole.
- the frequency response characteristic 12B may represent a frequency response characteristic for a dipole according to the substrate-type sensor 800.
- the graph 1213 and the graph 1214 may indicate a frequency response characteristic for an electric dipole, and the graph 1223 and the graph 1224 may indicate a frequency response characteristic for a magnetic dipole.
- the frequency response characteristic 1203 of FIG. 12C shows the frequency response characteristic for electromagnetic waves according to the sensor 901 of FIG. 9A.
- the graph 1215 and the graph 1216 may represent a frequency response characteristic for an electric dipole, and the graph 1225 and the graph 1226 may represent a frequency response characteristic for a magnetic dipole.
- the frequency response characteristic 1300 may represent a frequency response characteristic of an antenna element to an electromagnetic wave. By measuring the parameter while sweeping the frequency, it is possible to obtain a frequency response characteristic for the scattered electromagnetic wave.
- the frequency response characteristic may be a reflection coefficient among scattering parameters as shown in FIG. 13.
- the first reflection coefficient curve 1310 may represent a measured frequency response characteristic of the substrate-type sensor 800. For example, resonance frequencies may occur at 4.387 GHz and 5.975 GHz in the first reflection coefficient curve 1310.
- the second reflection coefficient curve 1320 may represent a frequency response characteristic measured through simulation. For example, in the second reflection coefficient curve 1320, resonance frequencies may occur at 4.281 GHz and 5.996 GHz.
- FIG. 14 is a block diagram showing a blood glucose measurement system according to an embodiment.
- the blood glucose measurement system 1400 may include an in vivo biometric sensor 1401 and an external device 1430.
- the in vivo biometric sensor 1401 may include a measurement unit 1410 and a communication unit 1420.
- the in vivo biometric sensor 1401 shown in FIG. 14 may be disposed under the skin of the subject, and the external device 1430 may be disposed outside the subject's human body.
- the measurement unit 1410 may include a resonance assembly, for example, a resonance element.
- the antenna element and/or the resonant assembly may have the structure of the antenna device shown in FIG. 5A or 7.
- the measurement unit 1410 of the in vivo biometric sensor 1401 may measure a biometric parameter with respect to the antenna device.
- the in vivo biosensor 1401 disposed under the skin of the subject may generate a signal by sweeping a frequency within a predetermined frequency band, and feed the generated signal to the resonant element.
- the sensor 1401 may measure a scattering parameter of a resonant element to which a signal whose frequency is changed is supplied.
- the communication unit 1420 may transmit data indicating the measured scattering parameter to the external device 1430. Also, the communication unit 1420 may receive power for generating a signal supplied to the measurement unit 1410 using a wireless power transmission method.
- the communication unit 1420 may include a coil to wirelessly receive power or transmit data.
- the external device 1430 may include a communication unit 1431 and a processor 1432.
- the communication unit 1431 of the external device 1430 may receive the biometric parameter from a blood glucose measurement device that measures a biometric parameter that changes according to biometric information associated with a target analyte.
- the communication unit 1431 may receive bio-related parameter data (eg, a scattering parameter and a degree of change in the resonance frequency) of the resonant element measured by the measurement unit 1410.
- the processor 1432 of the external device 1430 may determine biometric information (eg, a blood sugar level) using the received biometric parameter data.
- the external device 1430 may also be referred to as a biometric information processing device.
- a biometric information processing device that determines information indicating blood sugar as biometric information may be referred to as a blood sugar determination device.
- the processor 1432 of the external device 1430 may determine a blood sugar level for a living body by using biometric parameter data.
- the antenna element may exhibit three or more resonant frequencies due to an electric dipole and a magnetic dipole.
- the blood glucose measurement system 1400 may determine biometric information (eg, a blood glucose level and a degree of change in blood glucose) by tracking individual changes of three or more resonance frequencies of the antenna element. For example, frequency values of three or more resonance frequencies may be mapped for each blood sugar level. For example, a mapped lookup table such as a blood glucose level of XX mg/dL ⁇ -> (resonant frequencies of 1 GHz, 1.25 GHz, 1.5 GHz) may be stored. The blood glucose measurement system 1400 may search for a blood glucose level matching the measured resonance frequencies from the lookup table.
- the determination of the blood glucose level is not limited as described above, and various methods may be used depending on the design.
- the body biometric sensor 1401 may further include a processor itself, and the processor of the body biometric sensor 1401 may determine the blood sugar level.
- the sensor 1401 may transmit the determined blood sugar level to an external device through the communication unit.
- an additional device (not shown) including a processor may be disposed under the skin to establish human body communication with the in vivo biosensor 1401. In this case, the additional device (not shown) may directly receive the measured biometric parameter data from the body biometric sensor 1401 to determine the blood sugar level.
- the additional device may transmit the determined blood sugar level to the external device 1430 from the inside of the subject's human body.
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Abstract
Description
Claims (19)
- 안테나 장치(antenna device)에 있어서,제1 평면 상 제1 영역의 경계의 일부를 따라 서로 이격 배치되는 제1 도선 및 제2 도선;상기 제1 평면으로부터 평행하게 이격된 제2 평면 상 제2 영역의 경계의 일부를 따라 서로 이격 배치되는 제3 도선 및 제4 도선;상기 제2 평면으로부터 평행하게 이격된 제3 평면 상 제3 영역의 경계의 일부를 따라 서로 이격 배치되는 제5 도선 및 제6 도선;상기 제1 도선의 제1 단(first end) 및 상기 제3 도선의 제1 단을 연결하는 제1 연결부;상기 제2 도선의 제1 단 및 상기 제4 도선의 제1 단을 연결하는 제2 연결부;상기 제3 도선의 제2 단(second end) 및 상기 제5 도선의 제2 단을 연결하는 제3 연결부; 및상기 제4 도선의 제2 단 및 상기 제6 도선의 제2 단을 연결하는 제4 연결부를 포함하는 안테나 장치.
- 제1항에 있어서,상기 제1 도선의 제2단 및 상기 제2 도선의 제2 단은 안테나 포트와 연결되고, 상기 제1 도선 및 상기 제2 도선은 상기 안테나 포트 및 상기 제1 영역의 중심점을 통과하면서 상기 제1 평면에 수직하는 가상의 평면을 기준으로 서로 반대편에 배치되고,상기 제3 도선 및 상기 제4 도선은 상기 가상의 평면을 기준으로 서로 반대편에 배치되며,상기 제5 도선 및 상기 제6 도선은 상기 가상의 평면을 기준으로 서로 반대편에 배치되는,안테나 장치.
- 제1항에 있어서,상기 안테나 장치는,상기 제1 도선 및 상기 제2 도선이 연결되는 안테나 포트; 및상기 안테나 포트를 통해 피딩 신호(feed signal)를 공급하는 급전부(feeder)를 더 포함하는 안테나 장치.
- 제1항에 있어서,상기 제1 도선, 상기 제2 도선, 상기 제3 도선, 상기 제4 도선, 상기 제5 도선, 및 상기 제6 도선 중 하나 또는 둘 이상의 조합은 타겟 주파수(target frequency)에 대응하는 파장의 1/4의 길이를 가지는,안테나 장치.
- 제1항에 있어서,상기 제1 영역, 상기 제2 영역, 및 상기 제3 영역의 형태는 다각형 및 원형 중 하나인,안테나 장치.
- 제1항에 있어서,상기 제1 영역, 상기 제2 영역, 및 상기 제3 영역은 상기 제1 평면에서 수직한 방향으로 볼 때 동일한 크기 및 동일한 형태인,안테나 장치.
- 제1항에 있어서,상기 제1 연결부 및 상기 제2 연결부는 서로 분리(disconnected)되고, 상기 제3 연결부 및 상기 제4 연결부는 서로 분리되는,안테나 장치.
- 제3항에 있어서,상기 급전부로부터 상기 제1 연결부를 향하는 가상의 직선은 상기 가상의 평면에 대하여 임계 각도 이하의 각도를 형성하며,상기 급전부로부터 상기 제2 연결부를 향하는 가상의 직선은 상기 가상의 평면에 대하여 임계 각도 이하의 각도를 형성하는,안테나 장치.
- 제1항에 있어서,서로 평행하게 이격되어 위치되는 복수의 평면들 중 중심에 위치되는 기준 평면 상에 배치되는 도선들이, 피딩 신호에 응답하여, 자기 쌍극자에 의한 공진을 생성(generate)하는,안테나 장치.
- 제9항에 있어서,상기 기준 평면을 기준으로 일측에 위치되는 하나 이상의 평면 상에 배치되는 도선들이, 상기 피딩 신호에 응답하여, 제1 전기 쌍극자에 의한 공진을 생성하고,상기 기준 평면을 기준으로 타측에 위치되는 하나 이상의 평면 상에 배치되는 도선들이, 상기 피딩 신호에 응답하여, 상기 제1 전기 쌍극자에 반대되는 극성을 갖는 제2 전기 쌍극자에 의한 공진을 생성하는,안테나 장치.
- 제1항에 있어서,상기 연결부들은,비아 홀(via hole)을 통하여 도선들 사이를 연결하는,안테나 장치.
- 제1항에 있어서,상기 제5 도선 및 상기 제6 도선이 서로 전기적으로(electrically) 연결되는,안테나 장치.
- 제1항에 있어서,상기 제3 평면으로부터 평행하게 이격된 하나 이상의 추가 평면 상에서 영역의 경계의 일부를 따라 서로 이격 배치되는 상기 제5 도선 및 상기 제6 도선과 전기적으로 연결되는 하나 이상의 추가 도선을 포함하는 안테나 장치.
- 제1항에 있어서,상기 안테나 장치의 도선들은,원기둥의 형태를 가지는 인쇄 회로 기판(printed circuit board, PCB)의 표면에 프린팅(printing)되는,안테나 장치.
- 제1항에 있어서,상기 안테나 장치의 공진 주파수는 상기 안테나 장치 주변 대상 피분석물의 농도 변화에 응답하여 변화하는,안테나 장치.
- 제1항에 있어서,상기 안테나 장치는,상기 안테나 장치의 공진 주파수의 변화 정도 및 측정된 산란 파라미터에 관한 생체 관련 파라미터 데이터를 외부 장치로 송신하는 통신부를 더 포함하는 안테나 장치.
- 제1항에 있어서,상기 안테나 장치로 피딩 신호가 급전될 시, 상기 제1 도선은 상기 제3 도선과 용량성 결합을 형성하고, 상기 제3 도선은 상기 제5 도선과 용량성 결합을 형성하며, 상기 제2 도선은 상기 제4 도선과 용량성 결합을 형성하고, 상기 제4 도선은 상기 제6 도선과 용량성 결합을 형성하는,안테나 장치.
- 안테나 장치에 있어서,제1 평면 상 제1 영역의 일부를 따라 배치되는 제1 도선들;상기 제1 평면으로부터 평행하게 이격되는 제2 평면 상 제2 영역의 일부를 따라 배치되고 상기 제1 도선들과 용량성 결합을 형성하는 제2 도선들; 및상기 제2 평면으로부터 평행하게 이격되는 제3 평면 상 제3 영역의 일부를 따라 배치되고 상기 제2 도선들과 용량성 결합을 형성하는 제3 도선들을 포함하고,상기 제1 도선들은 안테나 포트에 연결되고 상기 안테나 포트를 기준으로 원위단에서 상기 제2 도선들과 연결되며, 상기 제2 도선들은 상기 안테나 포트를 기준으로 근위단에서 상기 제3 도선과 연결되고,상기 안테나 포트로 피딩 신호가 급전되는 경우에 응답하여, 자기 쌍극자에 의한 공진 및 전기 쌍극자에 의한 공진을 개별적으로 형성하는,안테나 장치.
- 안테나 장치에 있어서,서로 평행하게 이격되는 복수의 평면들 중 중심에 위치된 기준 평면 상에 배치되어 자기 쌍극자에 의한 공진을 생성 가능한 제1 도선;상기 기준 평면을 기준으로 일측에 위치되는 하나 이상의 평면 상에 배치되어 제1 전기 쌍극자에 의한 공진을 생성 가능한 제2 도선; 및상기 기준 평면을 기준으로 타측에 위치되는 하나 이상의 평면 상에 배치되어 상기 제1 전기 쌍극자에 반대되는 극성을 갖는 제2 전기 쌍극자에 의한 공진을 생성 가능한 제3 도선을 포함하는 안테나 장치.
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CN202080036001.5A CN114051678A (zh) | 2019-06-21 | 2020-06-19 | 利用磁偶极子共振测量生物信息的天线装置 |
CA3139920A CA3139920A1 (en) | 2019-06-21 | 2020-06-19 | Antenna device for measuring biometric information by using magnetic dipole resonance |
EP20827589.1A EP3957243A1 (en) | 2019-06-21 | 2020-06-19 | Antenna device for measuring biometric information by using magnetic dipole resonance |
JP2021568556A JP2022537641A (ja) | 2019-06-21 | 2020-06-19 | 磁気双極子共振を利用して生体情報を測定するアンテナ装置 |
US17/526,980 US11864879B2 (en) | 2019-06-21 | 2021-11-15 | Antenna device for measuring biometric information by using magnetic dipole resonance |
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US11612327B2 (en) * | 2021-06-02 | 2023-03-28 | Sb Solutions Inc. | Method and system for continuously measuring animal body temperature |
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KR20220156198A (ko) * | 2021-05-18 | 2022-11-25 | 주식회사 에스비솔루션 | 생체 정보 측정 시스템 및 방법 |
KR20230025624A (ko) * | 2021-08-13 | 2023-02-22 | 주식회사 에스비솔루션 | 생체 정보 측정을 위한 익스터널 디바이스, 생체 정보 측정 장치, 체내 센서 및 임플란트 디바이스 |
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US11864879B2 (en) | 2024-01-09 |
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US20220071504A1 (en) | 2022-03-10 |
EP3957243A1 (en) | 2022-02-23 |
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