WO2020060152A1 - Filtre de mode commun pour véhicule - Google Patents

Filtre de mode commun pour véhicule Download PDF

Info

Publication number
WO2020060152A1
WO2020060152A1 PCT/KR2019/011992 KR2019011992W WO2020060152A1 WO 2020060152 A1 WO2020060152 A1 WO 2020060152A1 KR 2019011992 W KR2019011992 W KR 2019011992W WO 2020060152 A1 WO2020060152 A1 WO 2020060152A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil pattern
dielectric sheet
common mode
disposed
coil
Prior art date
Application number
PCT/KR2019/011992
Other languages
English (en)
Korean (ko)
Inventor
박규환
유준서
Original Assignee
주식회사 아모텍
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 아모텍 filed Critical 주식회사 아모텍
Publication of WO2020060152A1 publication Critical patent/WO2020060152A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F17/0013—Printed inductances with stacked layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/04—Fixed inductances of the signal type  with magnetic core
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/29—Terminals; Tapping arrangements for signal inductances
    • H01F27/292—Surface mounted devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
    • H01F41/041—Printed circuit coils
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/42—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/42—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns
    • H03H7/425—Balance-balance networks
    • H03H7/427—Common-mode filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F17/0006—Printed inductances
    • H01F17/0013—Printed inductances with stacked layers
    • H01F2017/002—Details of via holes for interconnecting the layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F17/00—Fixed inductances of the signal type 
    • H01F2017/0093—Common mode choke coil

Definitions

  • the present invention relates to a vehicle common mode filter.
  • AVN Audio Video Navigation
  • AVN Audio Video Navigation
  • the high-speed interface employs a differential signal system that transmits a differential signal (differential mode signal) using a pair of signal lines, unlike a single-end transmission system that has long been commonly used.
  • the causes of the abnormal voltage and noise include switching voltage generated in the circuit, power supply noise included in the power supply voltage, unnecessary electromagnetic signals or electromagnetic noise, etc., and preventing such abnormal voltage and high-frequency noise from entering the circuit.
  • a common mode filter (CMF) is used.
  • the present invention has been proposed to solve the above-described conventional problems, and aims to provide a common mode filter for a vehicle that maximizes signal quality of an eye pattern by compensating for a common mode impedance while lowering resistance. .
  • the present invention is to reduce the resistance by configuring the coils of each channel in parallel, minimize the distance between the coils, and form a ferrite core to compensate (increase) the common mode impedance to maximize the signal quality of the eye pattern. It is an object to provide a common mode filter.
  • a vehicle common mode filter includes a filter unit, a first external terminal disposed on one side of the filter unit, and a second external terminal disposed on the other side of the filter unit, and a plurality of filter units It includes a dielectric layer made of a dielectric sheet, the dielectric layer includes a plurality of coil patterns disposed on different layers, some of the plurality of coil patterns are connected in parallel to form a first channel, the other part of the plurality of coil patterns Are connected in parallel to form a second channel.
  • the dielectric layer is disposed on the top of the dielectric layer, the first dielectric sheet having the first coil pattern formed on the upper surface, the second dielectric sheet disposed on the lower portion of the first dielectric sheet, and the second dielectric sheet having the second coil pattern formed on the upper surface.
  • a third dielectric sheet is disposed on the lower surface and a third coil pattern is formed on the upper surface, and the first coil pattern, the second coil pattern, and the third coil pattern are connected in parallel to form a first channel.
  • the dielectric layer is formed through the first dielectric sheet, and is formed through the first via pattern and the second dielectric sheet electrically connecting one end of the first coil pattern and one end of the second coil pattern, and the second A second via pattern electrically connecting one end of the coil pattern and one end of the third coil pattern may be further included.
  • One end of the first coil pattern is disposed adjacent to the center of the first dielectric sheet and connected to one end of the second coil pattern and one end of the third coil pattern, and the other end of the first coil pattern is disposed on one side of the first dielectric sheet Is connected to the first external terminal
  • the second coil pattern is a loop shape winding a winding axis orthogonal to the center point of the second dielectric sheet a plurality of times
  • one end of the second coil pattern is disposed on the inner circumference of the loop shape and the first coil
  • One end of the pattern and one end of the third coil pattern are connected, and the other end of the second coil pattern is disposed on the other side of the second dielectric sheet and connected to the second external terminal
  • the third coil pattern is the center point of the third dielectric sheet.
  • the dielectric layer is disposed on the lower portion of the third dielectric sheet, a fourth dielectric sheet having a fourth coil pattern formed on the upper surface, a fifth dielectric sheet disposed on a lower portion of the fourth dielectric sheet, and a fifth coil pattern formed on the upper surface, and It is disposed under the fifth dielectric sheet and is disposed at the bottom of the dielectric layer, and further includes a sixth dielectric sheet having a sixth coil pattern formed on the top surface, and the fourth coil pattern, the fifth coil pattern, and the sixth coil pattern are connected in parallel. Can form a second channel.
  • the dielectric layer is formed through the fourth dielectric sheet, and is formed through the third via pattern and the fifth dielectric sheet electrically connecting one end of the fourth coil pattern and one end of the fifth coil pattern, and the fifth A fourth via pattern electrically connecting one end of the coil pattern and one end of the sixth coil pattern may be further included.
  • the fourth coil pattern is a loop shape in which the winding axis orthogonal to the center point of the fourth dielectric sheet is wound a plurality of times, and one end of the fourth coil pattern is disposed on the inner periphery of the loop shape and the one end of the fifth coil pattern and the sixth coil pattern Loop connected to one end, the other end of the fourth coil pattern is disposed on the other side of the fourth dielectric sheet and connected to the second external terminal, and the fifth coil pattern is wound around the winding axis orthogonal to the center point of the fifth dielectric sheet multiple times Shape, one end of the fifth coil pattern is disposed on the inner periphery of the loop shape, connected to one end of the fourth coil pattern and one end of the sixth coil pattern, and the other end of the fifth coil pattern is arranged on the other side of the fifth dielectric sheet Connected to the second external terminal, one end of the sixth coil pattern is disposed adjacent to the center of the sixth dielectric sheet, connected to one end of the fourth coil pattern and one end of the fifth coil pattern, and the other
  • the second coil pattern, the third coil pattern, the fourth coil pattern, and the fifth coil pattern are formed in the same area and the same size, and the first coil pattern and the sixth coil pattern are formed in the same area and the same size, and the first The coil pattern to the sixth coil pattern may have the same distance between the adjacent coil patterns in the vertical direction.
  • the first coil pattern to the sixth coil pattern are interposed with only one dielectric sheet between adjacent coil patterns, and the dielectric sheets interposed between the first coil pattern to the sixth coil pattern are all formed to have the same thickness. You can.
  • the filter unit further includes a magnetic core inserted into the receiving hole formed in the dielectric layer, and the magnetic core is a ferrite core disposed on the inner periphery of the coil pattern formed in a loop shape among the plurality of coil patterns, and is magnetic in the receiving hole formed in the plurality of dielectric sheets. It can be formed by filling the material.
  • the common mode filter for a vehicle has an effect of improving the signal quality of the eye pattern by reducing the resistance Rdc by connecting the coil pattern of each channel in a parallel structure composed of two layers.
  • the common mode filter for a vehicle has an effect of compensating for a decrease in the common mode impedance due to a decrease in resistance by separating the distance between the coil patterns and the distance between both channels to a thickness of one dielectric sheet.
  • the vehicle common mode filter can improve the signal quality of the eye pattern by minimizing the difference (deviation) in the resistance value between the two channels. It works.
  • FIG. 1 is a view for explaining a common mode filter for a vehicle according to an embodiment of the present invention.
  • FIG 2 is an exploded perspective view of the filter unit shown in Figure 1;
  • FIG. 3 is a cross-sectional view of the filter part of FIG. 1 cut vertically.
  • 4 to 8 are views for explaining a modification of the common mode filter for a vehicle according to an embodiment of the present invention.
  • a common mode filter for a vehicle is a composite element used in an AVN (Audio, Video, Navigation) terminal installed in a vehicle, etc. It includes a pair of external terminals arranged on both sides of the unit 100.
  • the filter unit 100 is a laminate in which a plurality of sheets are stacked, and coil patterns constituting two channels are formed therein.
  • the external terminal includes a first external terminal 200 disposed on one side of the filter unit 100 and a second external terminal 300 disposed on the other side of the filter unit 100.
  • a common mode filter for a vehicle does not have a noise condition, a low resistance (Rdc) is required compared to a common mode filter for an electronic device mounted on a general electronic device.
  • the vehicle common mode filter has a coil pattern formed in a parallel structure and is composed of two layers while reducing the number of turns, thereby having a lower resistance (Rdc) than the common mode filter for electronic devices.
  • the common mode filter for a vehicle has a lower common mode impedance (Zcm) due to a decrease in resistance (Rdc).
  • the vehicle common mode filter may be arranged to minimize the distance between the coil patterns, and may form a ferrite core in the center of the coil pattern to compensate for the common mode impedance.
  • the filter unit 100 is composed of a stacked body in which the first magnetic sheet 110, the second magnetic sheet 120, and the dielectric layer 130 are stacked.
  • the first magnetic sheet 110 is disposed on the top of the laminate constituting the filter unit 100.
  • the first magnetic sheet 110 is a ferrite sheet formed in a plate shape having a predetermined thickness. At this time, the thickness of the first magnetic sheet 110 may be formed differently from the thickness of the dielectric sheet constituting the dielectric layer 130.
  • the second magnetic sheet 120 is disposed at the bottom of the laminate constituting the filter unit 100.
  • the second magnetic sheet 120 is a ferrite sheet formed in a plate shape having a predetermined thickness.
  • the thickness of the second magnetic sheet 120 may be formed differently from the thickness of the dielectric sheet constituting the dielectric layer 130.
  • the dielectric layer 130 is formed by stacking the first dielectric sheets 131 to sixth dielectric sheets 136.
  • the first dielectric sheet 131 is disposed on the top of the dielectric layer 130.
  • the first dielectric sheet 131 is disposed under the first magnetic sheet 110.
  • the first dielectric sheet 131 is formed with a first coil pattern 141 on its upper surface.
  • One end of the first coil pattern 141 is disposed adjacent to the center of the first dielectric sheet 131.
  • the other end of the first coil pattern 141 is disposed on one side of the first dielectric sheet 131 and is electrically connected to the first external terminal 200.
  • the second dielectric sheet 132 is disposed under the first dielectric sheet 131.
  • the second dielectric sheet 132 is formed with a second coil pattern 142 on the upper surface.
  • the second coil pattern 142 is a loop-shaped pattern that winds a winding axis orthogonal to a center point of the second dielectric sheet 132 multiple times. At this time, one end of the second coil pattern 142 is disposed on the inner circumference of the loop adjacent to the center of the second dielectric sheet 132.
  • the other end of the second coil pattern 142 is disposed on the other side of the second dielectric sheet 132 and is electrically connected to the second external terminal 300.
  • the third dielectric sheet 133 is disposed under the second dielectric sheet 132.
  • the third dielectric sheet 133 has a third coil pattern 143 formed on its upper surface.
  • the third coil pattern 143 is a loop-shaped pattern that winds a winding axis orthogonal to the center point of the third dielectric sheet 133 multiple times. At this time, one end of the third coil pattern 143 is disposed on the inner periphery of the loop adjacent to the center of the third dielectric sheet 133.
  • the other end of the third coil pattern 143 is disposed on the other side of the third dielectric sheet 133 and is electrically connected to the second external terminal 300.
  • the fourth dielectric sheet 134 is disposed under the third dielectric sheet 133.
  • the fourth dielectric sheet 134 is formed with a fourth coil pattern 144 on the upper surface.
  • the fourth coil pattern 144 is a loop-shaped pattern that winds a winding axis orthogonal to a center point of the fourth dielectric sheet 134 multiple times. At this time, one end of the fourth coil pattern 144 is disposed on the inner circumference of the loop adjacent to the center of the fourth dielectric sheet 134. The other end of the fourth coil pattern 144 is disposed on the other side of the fourth dielectric sheet 134 and is electrically connected to the second external terminal 300.
  • the fifth dielectric sheet 135 is disposed under the fourth dielectric sheet 134.
  • the fifth dielectric sheet 135 is formed with a fifth coil pattern 145 on the upper surface.
  • the fifth coil pattern 145 is a loop-shaped pattern that winds a winding axis orthogonal to a center point of the fifth dielectric sheet 135 multiple times. At this time, one end of the fifth coil pattern 145 is disposed on the inner circumference of the loop adjacent to the center of the fifth dielectric sheet 135. The other end of the fifth coil pattern 145 is disposed on the other side of the fifth dielectric sheet 135 and is electrically connected to the second external terminal 300.
  • the sixth dielectric sheet 136 is disposed at the bottom of the dielectric layer 130.
  • the second dielectric sheet 132 is disposed on the second magnetic sheet 120.
  • the sixth dielectric sheet 136 is interposed between the fifth dielectric sheet 135 and the second magnetic sheet 120.
  • a sixth coil pattern 146 is formed on the sixth dielectric sheet 136.
  • One end of the sixth coil pattern 146 is disposed adjacent to the center of the sixth dielectric sheet 136.
  • the other end of the sixth coil pattern 146 is disposed on one side of the sixth dielectric sheet 136 and is electrically connected to the first external terminal 200.
  • the first coil pattern 141 to the sixth coil pattern 146 constitute two channels in the filter unit 100. That is, the first coil pattern 141 to the third coil pattern 143 are electrically connected to form one channel (ie, the first channel), and the fourth coil pattern 144 to the sixth coil pattern 146 ) Are electrically connected to form another channel (ie, the second channel). At this time, the second coil pattern 142 to the fifth coil pattern 145 has a line width of about 28 ⁇ m and a line-to-line distance of about 30 ⁇ m.
  • the first coil pattern 141, the second coil pattern 142, and the third coil pattern 143 are electrically connected through the first via pattern 151 and the second via pattern 152 to form a first channel. do.
  • the first coil pattern 141 and the second coil pattern 142 are electrically connected through the first via pattern 151 formed on the first dielectric sheet 131.
  • the first via pattern 151 may be formed by filling a conductive material in a via hole formed through the first dielectric sheet 131 vertically.
  • One end of the first via pattern 151 is electrically connected to one end of the first coil pattern 141.
  • the other end of the first via pattern 151 is electrically connected to one end of the second coil pattern 142.
  • the second coil pattern 142 and the third coil pattern 143 are electrically connected through the second via pattern 152 formed on the second dielectric sheet 132.
  • the second via pattern 152 may be formed by filling a via hole formed through the second dielectric sheet 132 vertically and filling a conductive material.
  • One end of the second via pattern 152 is electrically connected to one end of the second coil pattern 142.
  • the other end of the second via pattern 152 is electrically connected to one end of the third coil pattern 143.
  • the second coil pattern 142 and the third coil pattern 143 are connected in a parallel structure composed of two layers.
  • the number of turns (number of turns) can be reduced compared to a conventional common mode filter composed of a single layer, so that the conventional common mode filter Compared to, the resistance Rdc can be reduced.
  • the common mode filter for a vehicle forms a coil pattern of each channel in a two-layered parallel structure and reduces the number of turns (reel), thereby reducing the resistance (Rdc) between both channels of the common mode filter to improve the signal quality of the eye pattern. Can be improved.
  • the fourth coil pattern 144, the fifth coil pattern 145, and the sixth coil pattern 146 are electrically connected through the third via pattern 153 and the fourth via pattern 154 to form a second channel. do.
  • the fourth coil pattern 144 and the fifth coil pattern 145 are electrically connected through the third via pattern 153 formed on the fourth dielectric sheet 134.
  • the third via pattern 153 may be formed by filling the via hole formed through the fourth dielectric sheet 134 vertically and filling the conductive material.
  • One end of the third via pattern 153 is electrically connected to one end of the fourth coil pattern 144.
  • the other end of the third via pattern 153 is electrically connected to one end of the fourth coil pattern 144.
  • the fifth coil pattern 145 and the sixth coil pattern 146 are electrically connected through the fourth via pattern 154 formed on the fifth dielectric sheet 135.
  • the fourth via pattern 154 may be formed by filling the via hole formed through the fifth dielectric sheet 135 vertically and filling the conductive material.
  • One end of the fourth via pattern 154 is electrically connected to one end of the fifth coil pattern 145.
  • the other end of the fourth via pattern 154 is electrically connected to one end of the sixth coil pattern 146.
  • the fourth coil pattern 144 and the fifth coil pattern 145 are connected in a parallel structure composed of two layers.
  • the number of turns (number of turns) can be reduced compared to a conventional common mode filter composed of a single layer, so that the conventional common mode filter Compared to, the resistance Rdc can be reduced.
  • the common mode filter for a vehicle can improve the signal quality of the eye pattern by reducing the resistance Rdc by connecting the coil pattern of each channel in a parallel structure composed of two layers.
  • the common mode impedance (Zcm) of the vehicle decreases as the resistance Rdc decreases.
  • the vehicle common mode filter increases the common mode impedance (Zcm) by forming the distances D1, D2, D3, and D4 between two adjacent coil patterns as close as possible to compensate for the common mode impedance (Zcm).
  • the distance means a separation distance in the vertical direction between the coil patterns.
  • first dielectric sheet 131 is interposed between the first coil pattern 141 and the second coil pattern 142, and the distance D1 between the first coil pattern 141 and the second coil pattern 142 is interposed.
  • second dielectric sheet 132 is interposed between the second coil pattern 142 and the third coil pattern 143, so that the distance D2 between the second coil pattern 142 and the third coil pattern 143 is interposed.
  • the thickness of the second dielectric sheet 132 is spaced apart.
  • Only the fourth dielectric sheet 134 is interposed between the fourth coil pattern 144 and the fifth coil pattern 145, so that the distance D3 between the fourth coil pattern 144 and the fifth coil pattern 145 is interposed. The thickness of the fourth dielectric sheet 134 is spaced apart. Only the fifth dielectric sheet 135 is interposed between the fifth coil pattern 145 and the sixth coil pattern 146, so that the distance D4 between the fifth coil pattern 145 and the sixth coil pattern 146 is interposed. The thickness of the fifth dielectric sheet 135 is spaced apart.
  • the first dielectric sheet 131, the second dielectric sheet 132, the fourth dielectric sheet 134 to the sixth dielectric sheet 136 in order to maintain a constant distance (D1 ⁇ D4) between the coil patterns It may be formed to a thickness of about 20mm.
  • the vehicle common mode filter compensates for the reduced common mode impedance (Zcm) due to the decrease in resistance (Rdc) by interposing only one dielectric sheet between two adjacent coil patterns. That is, the common mode filter for a vehicle can compensate for a decrease in the common mode impedance due to a reduction in resistance by separating the distance between the coil patterns and the distance between both channels to a thickness of a single dielectric sheet.
  • the vehicle common mode filter also minimizes the distance between the first channel and the second channel to compensate for the common mode impedance (Zcm).
  • the third dielectric sheet 133 is interposed between the third coil pattern 143 disposed at the bottom of the first channel and the fourth coil disposed at the top of the second channel, so that the third coil pattern 143 and The distance between the fourth coil patterns 144 (ie, the distance between the first channel and the second channel, D5) is spaced apart by the thickness of the third dielectric sheet 133.
  • the third dielectric sheet 133 may be formed to a thickness of about 20 mm in order to maintain a constant distance D5 between the first channel and the second channel.
  • the vehicle common mode filter compensates for the reduced common mode impedance (Zcm) due to the decrease in resistance (Rdc) by interposing only one dielectric sheet between the two channels.
  • the common mode filter for a vehicle stacks the first dielectric sheet 131 to the fifth dielectric sheet 135 having the same thickness, so that the distance between two adjacent coil patterns (D1, D2, D3, D4) and both channels
  • the common distance impedance (Zcm) is compensated as much as possible by making all the distances D5 equal.
  • the vehicle common mode filter may further include a magnetic core 170 to compensate for the common mode impedance (Zcm).
  • the magnetic core 170 is a ferrite core disposed through all or part of the dielectric layer 130.
  • the vehicle common mode filter may further include a receiving hole 160 passing through the dielectric layer 130.
  • the accommodation hole 160 may include first accommodation holes 161 to fifth accommodation holes 165.
  • the first accommodation hole 161 is formed through the first dielectric sheet 131 in the vertical direction.
  • the second accommodation hole 162 is formed through the second dielectric sheet 132 in the vertical direction. At this time, the second receiving hole 162 is located on the inner periphery of the loop formed by the second coil pattern 142, and overlaps the first receiving hole 161 when the dielectric sheets are stacked.
  • the third receiving hole 163 is formed through the third dielectric sheet 133 in the vertical direction. At this time, the third receiving hole 163 is located on the inner circumference of the loop formed by the third coil pattern 143 and overlaps the first receiving hole 161 and the second receiving hole 162 when stacking dielectric sheets. .
  • the fourth receiving hole 164 is formed through the fourth dielectric sheet 134 in the vertical direction. At this time, the fourth receiving hole 164 is located on the inner periphery of the loop formed by the fourth coil pattern 144, and overlaps the first receiving hole 161 to the third receiving hole 163 when stacking dielectric sheets. .
  • the fifth accommodation hole 165 is formed through the fifth dielectric sheet 135 in the vertical direction. At this time, the fifth receiving hole 165 is located on the inner periphery of the loop formed by the fifth coil pattern 145, and overlaps the first receiving hole 161 to the fourth receiving hole 164 when stacking dielectric sheets. .
  • the first receiving hole 161 to the fifth receiving hole 165 may be individually formed in the first dielectric sheet 131 to the fifth dielectric sheet 135 through laser punching or mechanical punching.
  • the first accommodating holes 161 to the fifth accommodating holes 165 may be formed at the same time through a laser punching or mechanical punching method after the first dielectric sheets 131 to the fifth dielectric sheets 135 are stacked.
  • the magnetic core 170 is disposed on the inner periphery of the core pattern of the first channel and the core pattern of the second channel to compensate for the reduction of the common mode impedance (Zcm) according to the reduction of the resistance (Rdc).
  • the receiving hole 160 may further include a sixth receiving hole 166 formed through the sixth dielectric sheet 136 in the vertical direction. At this time, the sixth receiving hole 166 overlaps the first receiving hole 161 to the fifth receiving hole 165 when the dielectric sheets are stacked.
  • the magnetic core may be formed by filling a magnetic material in the accommodation hole 160 formed in the dielectric layer 130.
  • the magnetic core may be formed by filling a magnetic material in each of the first receiving holes 161 to sixth receiving holes 166 and then stacking the first dielectric sheets 131 to sixth dielectric sheets 136.
  • the magnetic core is filled with a magnetic material in the receiving hole 160 formed by the first receiving hole 161 to the sixth receiving hole 166 after stacking the first dielectric sheet 131 to the sixth dielectric sheet 136. May be formed by
  • the common mode filter for a vehicle can compensate for a decrease in the common mode impedance due to a decrease in resistance by disposing the magnetic core 170 on the inner circumference of the coil pattern.
  • the filter unit 100 increases the difference in the resistance value (deviation) between both channels (the first channel and the second channel) due to an increase in the coil pattern, the signal quality of the eye pattern deteriorates.
  • the vehicle common mode filter forms coil patterns of both channels with the same size and the same area. That is, the vehicle common mode filter is the same as the overall size and area of the first coil pattern 141 to the third coil pattern 143 and the overall size and area of the fourth coil pattern 144 to the sixth coil pattern 146. Form.
  • the vehicle common mode filter is formed by forming the first coil pattern 141 and the sixth coil pattern 146 in the same shape, and forming the second coil pattern 142 to the fourth coil pattern 144 in the same shape. , It is possible to improve the signal quality of the eye pattern by making the area and size of the coil patterns of both channels the same and minimizing the difference (deviation) in the resistance value between the two channels.
  • the signal of the eye pattern is reduced by reducing the resistance (Rdc) by approximately 2.5 ⁇ compared to the common mode filter for single-core and single-layer electronic devices, and reducing the common mode impedance (Zcm) by approximately 7 ⁇ through compensation. Quality can be maximized

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Filters And Equalizers (AREA)

Abstract

La présente invention concerne un filtre de mode commun pour véhicule, qui est monté à l'intérieur d'un véhicule et comprend une partie filtre, une première borne externe et une seconde borne externe, la partie filtre comprenant une couche diélectrique constituée d'une pluralité de feuilles diélectriques, la couche diélectrique comprenant une pluralité de motifs de bobine disposés chacun sur une couche différente, une partie de la pluralité de motifs de bobine étant connectés en parallèle pour former un premier canal, et l'autre partie de la pluralité de motifs de bobine étant connectés en parallèle pour former un second canal. Par conséquent, la présente invention peut améliorer la qualité de signal du diagramme en œil par réduction de résistance, tout en réduisant au minimum la réduction de l'impédance de mode commun due à la réduction de résistance.
PCT/KR2019/011992 2018-09-20 2019-09-17 Filtre de mode commun pour véhicule WO2020060152A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180113127A KR102154237B1 (ko) 2018-09-20 2018-09-20 차량용 공통 모드 필터
KR10-2018-0113127 2018-09-20

Publications (1)

Publication Number Publication Date
WO2020060152A1 true WO2020060152A1 (fr) 2020-03-26

Family

ID=69887570

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2019/011992 WO2020060152A1 (fr) 2018-09-20 2019-09-17 Filtre de mode commun pour véhicule

Country Status (2)

Country Link
KR (1) KR102154237B1 (fr)
WO (1) WO2020060152A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20240030266A (ko) * 2022-08-30 2024-03-07 주식회사 아모텍 적층형 공통 모드 필터

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101531082B1 (ko) * 2012-03-12 2015-07-06 삼성전기주식회사 공통 모드 필터 및 이의 제조 방법
WO2015181883A1 (fr) * 2014-05-27 2015-12-03 松江エルメック株式会社 Filtre de mode commun
US20160142032A1 (en) * 2014-11-14 2016-05-19 Samsung Electro-Mechanics Co., Ltd. Composite electronic component and board having the same
JP2017224791A (ja) * 2016-06-17 2017-12-21 太陽誘電株式会社 コモンモードチョークコイル
JP2018037574A (ja) * 2016-09-01 2018-03-08 株式会社村田製作所 電子部品

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101167789B1 (ko) * 2010-09-30 2012-07-25 주식회사 아모텍 적층형 공통 모드 필터
KR101207663B1 (ko) * 2010-12-01 2012-12-03 주식회사 아모텍 Ｈｄｍｉ용 공통 모드 필터 제조 방법
KR101607065B1 (ko) 2016-01-13 2016-03-28 삼성전기주식회사 공통 모드 필터 및 그 제조 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101531082B1 (ko) * 2012-03-12 2015-07-06 삼성전기주식회사 공통 모드 필터 및 이의 제조 방법
WO2015181883A1 (fr) * 2014-05-27 2015-12-03 松江エルメック株式会社 Filtre de mode commun
US20160142032A1 (en) * 2014-11-14 2016-05-19 Samsung Electro-Mechanics Co., Ltd. Composite electronic component and board having the same
JP2017224791A (ja) * 2016-06-17 2017-12-21 太陽誘電株式会社 コモンモードチョークコイル
JP2018037574A (ja) * 2016-09-01 2018-03-08 株式会社村田製作所 電子部品

Also Published As

Publication number Publication date
KR20200033616A (ko) 2020-03-30
KR102154237B1 (ko) 2020-09-09

Similar Documents

Publication Publication Date Title
WO2017052274A1 (fr) Carte de circuit flexible ayant un corps diélectrique à trois couches et une structure de couche de terre à quatre couches
WO2019182283A1 (fr) Module d'antenne combiné
WO2016072779A1 (fr) Émetteur pour chargeur sans fil
WO2017052046A1 (fr) Carte de circuit imprimé souple à durabilité en flexion améliorée
WO2013085254A1 (fr) Broche de type pogo de type liaison à partie de sonde et procédé de fabrication de celle-ci
EP1756906A1 (fr) Compensation de diaphonie au moyen de systeme et procede de capacite d'equilibrage
WO2018151491A1 (fr) Noyau magnétique, bobine d'induction et filtre anti-interférence électromagnétique le comprenant
WO2019172595A1 (fr) Appareil de transmission d'énergie dans fil
WO2020060152A1 (fr) Filtre de mode commun pour véhicule
WO2017138744A1 (fr) Carte de circuit imprimé flexible
EP0587367B1 (fr) Adaptateur pour transmission de signaux vidéo et audio
EP3649698A1 (fr) Boîtier de dispositif électronique et dispositif électronique
WO2020050698A1 (fr) Module d'antenne combinée
WO2022005085A1 (fr) Prise de vérification et son procédé de fabrication
WO2011013969A2 (fr) Antenne à couches multiples utilisant un métamatériau et appareil de communication mobile comprenant cette dernière
WO2016148429A1 (fr) Carte de circuit imprimé souple
WO2021158041A1 (fr) Module de câble et son procédé de fabrication
WO2021015479A1 (fr) Câble plat flexible et son procédé de fabrication
WO2021256611A1 (fr) Filtre de guide d'ondes
WO2016148427A1 (fr) Carte de circuit imprimé souple
WO2013105777A1 (fr) Ligne de transmission haute fréquence utilisant une carte de circuit imprimé pour amélioration d'efficacité d'antennes multibandes
WO2021091113A1 (fr) Condensateur à large bande
WO2023277555A1 (fr) Dispositif de couplage magnétique ultra-mince
WO2017175930A1 (fr) Structure isolante de dispositif électronique
WO2019027265A1 (fr) Transformateur planaire à double noyau

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 19862589

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 19862589

Country of ref document: EP

Kind code of ref document: A1