CN104205249B - Cascade type multicore cable - Google Patents

Cascade type multicore cable Download PDF

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Publication number
CN104205249B
CN104205249B CN201380012033.1A CN201380012033A CN104205249B CN 104205249 B CN104205249 B CN 104205249B CN 201380012033 A CN201380012033 A CN 201380012033A CN 104205249 B CN104205249 B CN 104205249B
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CN
China
Prior art keywords
signal line
earth conductor
axis direction
conductor
cascade type
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CN201380012033.1A
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Chinese (zh)
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CN104205249A (en
Inventor
加藤登
小泽真大
石野聪
佐佐木纯
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Murata Manufacturing Co Ltd
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Murata Manufacturing Co Ltd
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Priority claimed from JP2012137616A external-priority patent/JP5477422B2/en
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to CN201710090030.XA priority Critical patent/CN106602193B/en
Publication of CN104205249A publication Critical patent/CN104205249A/en
Application granted granted Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/026—Coplanar striplines [CPS]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/08—Microstrips; Strip lines
    • H01P3/085—Triplate lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P3/00—Waveguides; Transmission lines of the waveguide type
    • H01P3/02—Waveguides; Transmission lines of the waveguide type with two longitudinal conductors
    • H01P3/08—Microstrips; Strip lines
    • H01P3/088—Stacked transmission lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/02—Coupling devices of the waveguide type with invariable factor of coupling
    • H01P5/022—Transitions between lines of the same kind and shape, but with different dimensions
    • H01P5/028—Transitions between lines of the same kind and shape, but with different dimensions between strip lines
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
    • H05K1/0219—Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
    • H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
    • H05K1/0224—Patterned shielding planes, ground planes or power planes
    • H05K1/0225—Single or multiple openings in a shielding, ground or power plane
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/03—Use of materials for the substrate
    • H05K1/0393—Flexible materials

Abstract

The present invention provides a kind of cascade type multicore cable of the isolation that can ensure that between holding wire.Duplexer (12) is laminated and is constituted by multiple electrolyte sheet material (18).Earth conductor (22) is arranged at duplexer (12).Earth conductor (24) is arranged at the layer different from earth conductor (24) in duplexer (12).Signal line (20) is arranged between earth conductor (22) and earth conductor (24) in the stacking direction.Signal line (21) is located between earth conductor (22) and earth conductor (24) in the stacking direction, and it is arranged on ratioing signal circuit (20) closer to the position of earth conductor (24), when overlooking from stacked direction, signal line (21) extends along signal line (20) in the A1 of parallel regions.When stacked direction is overlooked, earth conductor (22) is provided with and the equitant opening of signal line (20) (30) in the A1 of parallel regions.

Description

Cascade type multicore cable
Technical field
The present invention relates to cascade type multicore cable, more specifically, it is related to many letters having for transmitting high-frequency signal The cascade type multicore cable of number line.
Background technology
As existing cascade type multicore cable, for example, as it is known that there being the flexible flat cable that patent documentation 1 is recorded.Figure 19 It is the sectional structure chart of the flexible flat cable 500 described in patent documentation 1.
As shown in figure 19, flexible flat cable 500 has straight angle conductor (flat conductor) 502, insulating properties adhesive sheet 504a, 504b and metallic film 506a, 506b.
Straight angle conductor 502 separates equal intervals within the same layer and is disposed with multiple.Straight angle conductor 502 is in upper and lower Upwards clamped by insulating properties adhesive sheet 504a, 504b.In addition, the upper strata of insulating properties adhesive sheet 504a is provided with metal foil Film 506a.The lower floor of insulating properties sheet material 504b is provided with metallic film 506b.Above-mentioned flexible flat cable 500 have be arranged with many The structure of individual strip line.
But, in the flexible flat cable 500 described in patent documentation 1, straight angle conductor 502 is closer to each other, accordingly, there exist It is difficult to ensure that the problem of the isolation between straight angle conductor 502.
Prior art literature
Patent documentation
Patent documentation 1：Japanese Patent Laid-Open 2009-277623 publication
Content of the invention
Invent technical problem to be solved
Therefore, it is an object of the invention to provide a kind of cascade type multicore that can ensure that the isolation between many signal lines Cable.
Solve the technical scheme of technical problem
Cascade type multicore cable involved by one embodiment of the present invention is it is characterised in that include：Duplexer, this layer Stack is constituted by being laminated multi-layer substrate layer；First earth conductor, this first earth conductor is arranged at described stacking Body；Second earth conductor, this second earth conductor is arranged at the layers different from described first earth conductor in described duplexer； First signal line, this first signal line is arranged at described first earth conductor in the stacking direction and described second ground connection is led Between body；And secondary signal circuit, this secondary signal circuit is located at described first earth conductor and described in the stacking direction Between second earth conductor, and it is arranged to compare described first signal line closer to this second earth conductor, from stacking side When overlooking upwards, this secondary signal circuit extends along described first signal line in predetermined region, overlooks from stacked direction When, described first earth conductor is provided with equitant first opening with described first signal line in described predetermined region.
Invention effect
According to the present invention, can ensure that the isolation between many signal lines.
Brief description
Fig. 1 is the stereoscopic figure of the cascade type multicore cable involved by an embodiment.
Fig. 2 is the exploded perspective view of the cascade type multicore cable involved by an embodiment.
Fig. 3 is the sectional structure chart along X-X of the cascade type multicore cable of Fig. 1.
Fig. 4 is to overlook the signal line of cascade type multicore cable of Fig. 1 and the figure of earth conductor.
Fig. 5 is stereoscopic figure and the sectional structure chart of the adapter of cascade type multicore cable.
Fig. 6 is the figure during electronic equipment overlooked from y-axis direction and z-axis direction using cascade type multicore cable.
Fig. 7 is the stereoscopic figure of the cascade type multicore cable involved by variation 1.
Fig. 8 is the exploded perspective view of the cascade type multicore cable involved by variation 1.
Fig. 9 is stereoscopic figure and the sectional structure chart of the adapter of cascade type multicore cable.
Figure 10 is the figure during electronic equipment overlooked from y-axis direction and z-axis direction using cascade type multicore cable.
Figure 11 is the figure overlooking the signal line of cascade type multicore cable and earth conductor involved by variation 2.
Figure 12 is the figure overlooking the signal line of cascade type multicore cable and earth conductor involved by variation 3.
Figure 13 is the stereoscopic figure of the cascade type multicore cable involved by variation 4.
Figure 14 is the exploded perspective view of the parallel regions of cascade type multicore cable involved by variation 4.
Figure 15 is figure when overlooking the electronic equipment using cascade type multicore cable from z-axis direction.
Figure 16 is the exploded perspective view of the connecting portion of cascade type multicore cable involved by variation 5.
Figure 17 is the sectional structure chart of the cascade type multicore cable involved by other embodiment.
Figure 18 is the sectional structure chart of the cascade type multicore cable involved by other embodiment.
Figure 19 is the sectional structure chart of the flexible flat cable described in patent documentation 1.
Specific embodiment
Hereinafter, referring to the drawings, the cascade type multicore cable involved by embodiments of the present invention is illustrated.
(structure of cascade type multicore cable)
Below, referring to the drawings, the structure of the cascade type multicore cable involved by one embodiment of the present invention is said Bright.Fig. 1 is the stereoscopic figure of the cascade type multicore cable 10 involved by an embodiment.Fig. 2 is involved by an embodiment Cascade type multicore cable 10 exploded perspective view.Fig. 3 is the sectional structure chart along X-X of the cascade type multicore cable 10 of Fig. 1. Fig. 4 is the figure overlooked obtained by the signal line 20,21 of cascade type multicore cable 10 of Fig. 1 and earth conductor 22,24.In Fig. 1 To Fig. 4, the stacked direction of signal line 10 is defined as z-axis direction.Additionally, the length direction by cascade type multicore cable 10 It is defined as x-axis direction, the direction orthogonal with x-axis direction and z-axis direction is defined as y-axis direction.
As shown in Figures 1 and 2, cascade type multicore cable 10 has duplexer 12, outside terminal 16a～16d, signal line 20th, 21, earth conductor 22,24, adapter 100a, 100b and via conductor b1～b18.
When z-axis direction is overlooked, duplexer 12 extends along the x-axis direction, and comprise line part 12a and connecting portion 12b～ 12e.As shown in Fig. 2 duplexer 12 is by protective layer 14, electrolyte sheet material (base from the positive direction side in z-axis direction to negative direction side Material layer) 18a～18c and protective layer 15 stack gradually the flexible duplexer to constitute.Hereinafter, by the z-axis direction of duplexer 12 The interarea of positive direction side is referred to as surface, and the interarea of the negative direction side in the z-axis direction of duplexer 12 is referred to as the back side.
Line part 12a extends in the direction of the x axis.The end of the negative direction side in the x-axis direction from line part 12a for the connecting portion 12b The negative direction side that portion rises towards x-axis direction extends, and rectangular.The positive direction side in the x-axis direction from line part 12a for the connecting portion 12c The positive direction side in end Qi ChaoxZhou direction extend, and rectangular.The losing side in the x-axis direction from line part 12a for the connecting portion 12d Negative direction side to the end Qi ChaoyZhou direction of side extends, and rectangular.Thus, connecting portion 12b and connecting portion 12d is configured to It is bifurcated into the structure of two from the end of the negative direction side in the x-axis direction of line part 12a.Connecting portion 12e is from line part 12a The end Qi ChaoyZhou direction of the positive direction side in x-axis direction negative direction side extend, afterwards, the positive direction side towards x-axis direction is prolonged Stretch, be thus configured to L font.Thus, connecting portion 12c and connecting portion 12e is configured to the pros in the x-axis direction from line part 12a Act the structure being bifurcated into two to the end of side.The y-axis direction width of connecting portion 12b～12e and the y-axis direction of line part 12a Width is equal.
When z-axis direction is overlooked, electrolyte sheet material 18a～18c is in and duplexer 12 identical shape.Electrolyte sheet material The thermoplastic resin that 18a～18c is had flexibility by polyimides etc. is constituted.Thickness example after electrolyte sheet material 18a～18c stacking As for 25 μm～200 μm.Hereinafter, the interarea of the positive direction side in the z-axis direction of electrolyte sheet material 18a～18c is referred to as surface, will The interarea of the negative direction side in z-axis direction of electrolyte sheet material 18a～18c is referred to as the back side.
Additionally, electrolyte sheet material 18a is made up of line part 18a-a and connecting portion 18a-b～18a-e.Electrolyte sheet material 18b It is made up of line part 18b-a and connecting portion 18b-b～18b-e.Electrolyte sheet material 18c is by line part 18c-a and connecting portion 18c-b ～18c-e is constituted.Line part 18a-a～18c-a constitutes line part 12a.Connecting portion 18a-b, 18c-b constitute connecting portion 12b.Even Socket part 18a-c, 18c-c constitutes connecting portion 12c.Connecting portion 18a-d, 18b-d, 18c-d constitute connecting portion 12d.Connecting portion 18a- E, 18b-e, 18c-e constitute connecting portion 12e.
As shown in Fig. 2 earth conductor 22 (the first earth conductor) is arranged at duplexer 12, more specifically, it is arranged at electricity The surface of media sheet 18a.When z-axis direction is overlooked, earth conductor 22 be in and duplexer 12 same shape, and by with Silver, copper are that the less metal material of resistivity of main component is made.
Additionally, as shown in Fig. 2 earth conductor 22 is made up of line part 22a and portion of terminal 22b～22e.Line part 22a sets It is placed in the surface of line part 18a-a, in the rectangle extending along the x-axis direction.
As shown in Fig. 2 portion of terminal 22b is arranged on the surface of connecting portion 18a-b, and negative with the x-axis direction of line part 22a The end of direction side is connected.The end of the negative direction side in x-axis direction of portion of terminal 22b is in the frame-shaped of tetragon.As Fig. 2 institute Show, portion of terminal 22c is arranged on the surface of connecting portion 18a-c, and the end phase with the positive direction side in the x-axis direction of line part 22a Connect.The end of the positive direction side in x-axis direction of portion of terminal 22c is in square shape.As shown in Fig. 2 portion of terminal 22d is arranged on connection The surface of portion 18a-d, and be connected with the end of the negative direction side in the x-axis direction of line part 22a.The x-axis direction of portion of terminal 22d Negative direction side end be in square shape.As shown in Fig. 2 portion of terminal 22e is arranged on the surface of connecting portion 18a-e, and and circuit The end of the positive direction side in x-axis direction of portion 22a is connected.The end of the positive direction side in x-axis direction of portion of terminal 22e is in mouth word Shape.
As shown in Fig. 2 earth conductor 24 (the second earth conductor) is arranged in duplexer 12 is different from earth conductor 22 Layer, more specifically, is arranged at the back side of electrolyte sheet material 18c.When z-axis direction is overlooked, earth conductor 24 is in and duplexer 12 same shapes, and be made by with silver, the less metal material of the resistivity as main component for the copper.
Additionally, as shown in Fig. 2 earth conductor 24 is made up of line part 24a and portion of terminal 24b～24e.Line part 24a sets It is placed in the back side of line part 18c-a, in the rectangle extending along the x-axis direction.
As shown in Fig. 2 portion of terminal 24b is arranged on the back side of connecting portion 18c-b, and negative with the x-axis direction of line part 24a The end of direction side is connected.As shown in Fig. 2 portion of terminal 24c is arranged on the back side of connecting portion 18c-c, and with line part 22a The end of the positive direction side in x-axis direction is connected.As shown in Fig. 2 portion of terminal 24d is arranged on the back side of connecting portion 18c-d, and with The end of the negative direction side in x-axis direction of line part 24a is connected.As shown in Fig. 2 portion of terminal 24e is arranged on connecting portion 18c-e The back side, and be connected with the end of the positive direction side in the x-axis direction of line part 24a.
As shown in Figures 2 and 3, signal line 20 is arranged between earth conductor 22 and earth conductor 24 in the z-axis direction, More specifically, it is arranged on line part 18b-a of electrolyte sheet material 18b and the surface of connecting portion 18b-b, 18b-c.Signal line 20 is comparing on the position of the central authorities in the y-axis direction positive direction side closer to y-axis direction along x-axis on line part 18b-a surface The linear conductor that direction extends, when z-axis direction is overlooked, is overlapped with earth conductor 22,24.Thus, signal line 20 and Earth conductor 22,24 forms strip lines configuration.Signal line 20 is by with silver, the less metal material of the resistivity as main component for the copper Material is made.
Additionally, as shown in figure 3, signal line 20 and earth conductor 22 in the z-axis direction be less than signal line apart from D1 20 with earth conductor 24 in the z-axis direction apart from D2.Roughly equal with the thickness of electrolyte sheet material 18a apart from D1, apart from D2 Roughly equal with the gross thickness of electrolyte sheet material 18b and 18c.
As shown in Figures 2 and 3, signal line 21 is arranged between earth conductor 22 and earth conductor 24 in the z-axis direction, It is arranged on ratioing signal circuit 20 closer to the position of earth conductor 24, more specifically, be arranged on the line of electrolyte sheet material 18c Road portion 18c-a and the surface of connecting portion 18c-d, 18c-e.Additionally, signal line 21 is to compare y on line part 18c-a surface The linear conductor that axial central authorities extend along the x-axis direction closer on the position of the negative direction side in y-axis direction, from z-axis direction During vertical view, overlap with signal line 20.As shown in figure 4, when overlooking from z-axis direction, signal line 21 is in parallel regions A1 Middle extend along signal line 20.So-called parallel regions A1 is equivalent to line part 12a.Additionally, so-called along something extend refer to parallel State or the state from parastate somewhat run-off the straight.But, when overlooking from z-axis direction, signal line 21 and ground connection are led Body 22,24 is overlapping.Thus, signal line 21 and earth conductor 22,24 form strip lines configuration.Signal line 21 by with silver, Copper is that the less metal material of resistivity of main component is made.
Additionally, as shown in figure 3, signal line 21 and earth conductor 22 in the z-axis direction be more than signal line apart from D3 21 with earth conductor 24 in the z-axis direction apart from D4.It is roughly equal with the gross thickness of electrolyte sheet material 18a, 18b apart from D3, Roughly equal with the thickness of electrolyte sheet material 18c apart from D4.
Herein, as shown in figure 4, the multiple openings 30 being rectangle are provided with earth conductor 22.Overlook from z-axis direction When, multiple openings 30 are overlapping with signal line 20, and are arranged along this signal line 20 and arrange.And, in earth conductor In 22, the part being arranged between adjacent opening 30 is referred to as bridge part 32.Thus, opening 30 and bridge part 32 are in x-axis side It is alternately arranged upwards.Opening 30 and bridge part 32 are alternately overlapping with signal line 20.Bridge part 32 is with than signal line 20 The half of 1/2 wavelength of middle transmitted high-frequency signal will to be configured along signal line 20 in short interval.
As shown in figure 4, the multiple openings 31 being rectangle are provided with earth conductor 24.When z-axis direction is overlooked, multiple Opening 31 is overlapping with signal line 21, and is arranged along this signal line 21 and arranges.And, in earth conductor 24, will The part being arranged between adjacent opening 31 is referred to as bridge part 33.Thus, opening 31 and bridge part 33 replace in the direction of the x axis Ground arrangement.Opening 31 and bridge part 33 are alternately overlapping with signal line 21.Bridge part 32 is to be transmitted than in signal line 21 1/2 wavelength of high-frequency signal half will short interval to be configured along signal line 21.
Outside terminal 16a is provided in the rectangular conductor on the surface of connecting portion 18a-b, and by portion of terminal 22b bag Enclose.When z-axis direction is overlooked, outside terminal 16a is overlapping with the end of the negative direction side in the x-axis direction of signal line 20.Outside Terminal 16a is made by with silver, the less metal material of the resistivity as main component for the copper.Additionally, to outside terminal 16a's Surface is implemented gold-plated.
Outside terminal 16b is provided in the rectangular conductor on the surface of connecting portion 18a-c, and by portion of terminal 22c bag Enclose.When z-axis direction is overlooked, outside terminal 16b is overlapping with the end of the positive direction side in the x-axis direction of signal line 20.Outside Terminal 16b is made by with silver, the less metal material of the resistivity as main component for the copper.Additionally, to outside terminal 16b's Surface is implemented gold-plated.
Outside terminal 16c is provided in the rectangular conductor on the surface of connecting portion 18a-d, and by portion of terminal 22d bag Enclose.When z-axis direction is overlooked, outside terminal 16c is overlapping with the end of the negative direction side in the x-axis direction of signal line 21.Outside Terminal 16c is made by with silver, the less metal material of the resistivity as main component for the copper.Additionally, to outside terminal 16c's Surface is implemented gold-plated.
Outside terminal 16d is provided in the rectangular conductor on the surface of connecting portion 18a-e, and by portion of terminal 22e bag Enclose.When z-axis direction is overlooked, outside terminal 16d is overlapping with the end of the positive direction side in the x-axis direction of signal line 21.Outside Terminal 16d is made by with silver, the less metal material of the resistivity as main component for the copper.Additionally, to outside terminal 16d's Surface is implemented gold-plated.
Via conductor b1 runs through the connecting portion 18a-b of electrolyte sheet material 18a in the z-axis direction.The z-axis side of via conductor b1 To the end of positive direction side be connected with outside terminal 16a, the end of the negative direction side in z-axis direction of via conductor b1 and letter The end of the negative direction side in x-axis direction of number circuit 20 is connected.
Via conductor b2 runs through the connecting portion 18a-c of electrolyte sheet material 18a in the z-axis direction.The z-axis side of via conductor b2 To the end of positive direction side be connected with outside terminal 16b, the end of the negative direction side in z-axis direction of via conductor b2 and letter The end of the positive direction side in x-axis direction of number circuit 20 is connected.Thus, signal line 20 is connected to outside terminal 16a, 16b Between.
Via conductor b3 runs through the connecting portion 18a-d of electrolyte sheet material 18a in the z-axis direction.Via conductor b4 is in z-axis side Extend upward through the connecting portion 18b-d of electrolyte sheet material 18b.Via conductor b3, b4 are connected with each other, thus constitute a via leading Body.The end of the positive direction side in z-axis direction of via conductor b3 is connected with outside terminal 16c, the z-axis direction of via conductor b4 The end of negative direction side be connected with the end of the negative direction side in the x-axis direction of signal line 21.
Via conductor b5 runs through the connecting portion 18a-e of electrolyte sheet material 18a in the z-axis direction.Via conductor b6 is in z-axis side Extend upward through the connecting portion 18b-e of electrolyte sheet material 18b.Via conductor b5, b6 are connected with each other, thus constitute a via leading Body.The end of the positive direction side in z-axis direction of via conductor b5 is connected with outside terminal 16d, the z-axis direction of via conductor b6 The end of negative direction side be connected with the end of the positive direction side in the x-axis direction of signal line 21.
Via conductor b7 line part 18a-a of insertion electrolyte sheet material 18a and connecting portion 18a-b, 18a- in the z-axis direction C, when z-axis direction is overlooked, ratioing signal circuit 20 closer to y-axis direction positive direction side, to be arranged in the direction of the x axis The mode of string arranges multiple via conductor b7.The line part of via conductor b8 insertion electrolyte sheet material 18b in the z-axis direction 18b-a and connecting portion 18b-b, 18b-c, when z-axis direction is overlooked, ratioing signal circuit 20 closer to y-axis direction pros To side, multiple via conductor b8 are set in the way of being arranged in string in the direction of the x axis.Via conductor b9 passes through in the z-axis direction Line part 18c-a of energising media sheet 18c and connecting portion 18c-b, 18c-c, when z-axis direction is overlooked, in ratioing signal line Road 20, closer to the positive direction side in y-axis direction, arranges multiple via conductor b9 in the way of being arranged in string in the direction of the x axis. Via conductor b7～b9 is connected with each other, thus constituting a via conductor.The end of the positive direction side in z-axis direction of via conductor b7 Portion is connected with earth conductor 22.The end of the negative direction side in z-axis direction of via conductor b9 is connected with earth conductor 24.
Via conductor b10 in the z-axis direction line part 18a-a of insertion electrolyte sheet material 18a and connecting portion 18a-b, 18a-c, when z-axis direction is overlooked, ratioing signal circuit 20 closer to y-axis direction negative direction side, to arrange in the direction of the x axis The mode arranging into string arranges multiple via conductor b10.The line of via conductor b11 insertion electrolyte sheet material 18b in the z-axis direction Road portion 18b-a and connecting portion 18b-b, 18b-c, when z-axis direction is overlooked, in ratioing signal circuit 20 closer to y-axis direction Negative direction side, arranges multiple via conductor b11 in the way of being arranged in string in the direction of the x axis.Via conductor b12 is in z-axis side Line part 18c-a of insertion electrolyte sheet material 18c and connecting portion 18c-b, 18c-c upwards, when z-axis direction is overlooked, is comparing Signal line 20, closer to the negative direction side in y-axis direction, arranges multiple vias in the way of being arranged in string in the direction of the x axis and leads Body b12.Via conductor b10～b12 is connected with each other, thus constituting a via conductor.The z-axis direction of via conductor b10 is just The end of direction side is connected with earth conductor 22.The end of the negative direction side in z-axis direction of via conductor b12 and earth conductor 24 are connected.
Via conductor b13 in the z-axis direction line part 18a-a of insertion electrolyte sheet material 18a and connecting portion 18a-d, 18a-e, when z-axis direction is overlooked, ratioing signal circuit 21 closer to y-axis direction positive direction side, to arrange in the direction of the x axis The mode arranging into string arranges multiple via conductor b13.The line of via conductor b14 insertion electrolyte sheet material 18b in the z-axis direction Road portion 18b-a and connecting portion 18b-d, 18b-e, when z-axis direction is overlooked, in ratioing signal circuit 21 closer to y-axis direction Positive direction side, arranges multiple via conductor b14 in the way of being arranged in string in the direction of the x axis.Via conductor b15 is in z-axis side Line part 18c-a of insertion electrolyte sheet material 18c and connecting portion 18c-d, 18c-e upwards, when z-axis direction is overlooked, is comparing Signal line 21, closer to the positive direction side in y-axis direction, arranges multiple vias in the way of being arranged in string in the direction of the x axis and leads Body b15.Via conductor b13～b15 is connected with each other, thus constituting a via conductor.The z-axis direction of via conductor b13 is just The end of direction side is connected with earth conductor 22.The end of the negative direction side in z-axis direction of via conductor b15 and earth conductor 24 are connected.
Via conductor b16 in the z-axis direction line part 18a-a of insertion electrolyte sheet material 18a and connecting portion 18a-d, 18a-e, when z-axis direction is overlooked, ratioing signal circuit 21 closer to y-axis direction negative direction side, to arrange in the direction of the x axis The mode arranging into string arranges multiple via conductor b16.The line of via conductor b17 insertion electrolyte sheet material 18b in the z-axis direction Road portion 18b-a and connecting portion 18b-d, 18b-e, when z-axis direction is overlooked, in ratioing signal circuit 21 closer to y-axis direction Negative direction side, arranges multiple via conductor b17 in the way of being arranged in string in the direction of the x axis.Via conductor b18 is in z-axis side Line part 18c-a of insertion electrolyte sheet material 18c and connecting portion 18c-d, 18c-e upwards, when z-axis direction is overlooked, is comparing Signal line 21, closer to the negative direction side in y-axis direction, arranges multiple vias in the way of being arranged in string in the direction of the x axis and leads Body b18.Via conductor b16～b18 is connected with each other, thus constituting a via conductor.The z-axis direction of via conductor b16 is just The end of direction side is connected with earth conductor 22.The end of the negative direction side in z-axis direction of via conductor b18 and earth conductor 24 are connected.Thus, earth conductor 22 is connected by via conductor b7～b18 with earth conductor 24.
Via conductor b1～b18 by with silver, copper by main component and make by the less metal material of resistivity.In addition, can Substitute via conductor b1～b18 using the through hole that the inner peripheral surface in through hole is formed with the conductor layers such as plating.
The substantially whole surface of protective layer 14 covering dielectric sheet material 18a.Thus, protective layer 14 covers earth conductor 22. Protective layer 14 is for example made up of flexible resin(a)s such as anticorrosive additive materials.
Additionally, as shown in Fig. 2 protective layer 14 is made up of line part 14a and connecting portion 14b～14e.Line part 14a covers The substantially whole surface of line part 18a-a, thus cover line part 22a.
Connecting portion 14b connects the end of the negative direction side in the x-axis direction to line part 14a, and covers connecting portion 18a-b's Surface.Wherein, it is provided with the opening Ha of rectangle in connecting portion 14b.Outside terminal 16a and portion of terminal 22b via opening Ha expose to Outside.Portion of terminal 22b is exposed to outside via opening Ha, thus realizing the function as outside terminal.
Connecting portion 14c connects the end of the positive direction side in the x-axis direction to line part 14a, and covers connecting portion 18a-c's Surface.Wherein, it is provided with the opening Hb of rectangle in connecting portion 14c.Outside terminal 16b and portion of terminal 22c via opening Hb expose to Outside.Portion of terminal 22c is exposed to outside via opening Hb, thus realizing the function as outside terminal.
Connecting portion 14d connects the end of the negative direction side in the x-axis direction to line part 14a, and covers connecting portion 18a-d's Surface.Wherein, it is provided with the opening Hc of rectangle in connecting portion 14d.Outside terminal 16c and portion of terminal 22d via opening Hc expose to Outside.Portion of terminal 22d is exposed to outside via opening Hc, thus realizing the function as outside terminal.
Connecting portion 14e connects the end of the positive direction side in the x-axis direction to line part 14a, and covers connecting portion 18a-e's Surface.Wherein, it is provided with the opening Hd of rectangle in connecting portion 14e.Outside terminal 16d and portion of terminal 22e via opening Hd expose to Outside.Portion of terminal 22e is exposed to outside via opening Hd, thus realizing the function as outside terminal.
The substantially whole back side of protective layer 15 covering dielectric piece 18c.Thus, protective layer 15 covers earth conductor 24.Protection Layer 15 is for example made up of flexible resin(a)s such as anticorrosive additive materials.
Adapter 100a, 100b are separately mounted on the surface of connecting portion 12b, 12c, and lead with wire size circuit 20 and ground connection Body 22,24 is electrically connected.Additionally, adapter 100c, 100d are separately mounted on the surface of connecting portion 12d, 12e, and with letter Number circuit 21 and earth conductor 22,24 are electrically connected.The structure of adapter 100a～100d is identical, therefore, below to connect Illustrate as a example the structure of device 100b.Fig. 5 is the stereoscopic figure of adapter 100b and the section of cascade type multicore cable 10 Structure chart.
As shown in figure 5, adapter 100b is by connector body 102, outside terminal 104,106, center conductor 108 and outside Conductor 110 is constituted.Connector body 102 is in the shape being linked with cylinder on rectangular slab, and is made up of insulant such as resins.
On the surface of the negative direction side in the z-axis direction of connector body 102, outside terminal 104 is arranged on and outside At the relative position of terminal 16b.On the face of the negative direction side in the z-axis direction of connector body 102, outside terminal 106 is set Put at the position corresponding with portion of terminal 22c exposed via opening Hb.
Center conductor 108 is arranged on the cylinder center of connector body 102, and is connected with outside terminal 104.Center is led Body 108 is the signal terminal of high-frequency signal that input or output signal circuit 20 are transmitted.
External conductor 110 is arranged at the cylinder of connector body 102, and is connected with outside terminal 106.External conductor 110 ground terminals being to maintain earthing potential.
In the way of outside terminal 104 is connected with outside terminal 16b, outside terminal 106 is connected with portion of terminal 22c, The adapter 100b with constituted above is arranged on the surface of connecting portion 12c.Thus, signal line 20 and center conductor 108 are electrically connected.Additionally, earth conductor 22,24 and external conductor 110 are electrically connected.
By following illustrated in the way of come using cascade type multicore cable 10.Fig. 6 is to overlook from y-axis direction and z-axis direction Employ figure obtained from the electronic equipment 200 of cascade type multicore cable 10.
Electronic equipment 200 includes cascade type multicore cable 10, circuit substrate 202a～202d, socket 204a～204d (insert 204c, 204d are not shown for seat), set of cells (metallic object) 206 and housing 210.
Set of cells 206 is, for example, Li-Ion rechargeable battery, has the structure that its surface is covered by metal cap.Circuit substrate 202a, the set of cells 206 and circuit substrate 202b negative direction side from x-axis direction are arranged in order towards positive direction side.Circuit substrate 202c is arranged on the negative direction side in the y-axis direction of circuit substrate 202a.Circuit substrate 202d is arranged on the y-axis of circuit substrate 202d The negative direction side in direction.
The surface (more precisely, protective layer 14) of duplexer 12 is contacted with set of cells 206.And, duplexer 12 Surface and set of cells 206 are passed through bonding agent etc. and are fixed.
Socket 204a～204d is separately positioned on the interarea of the negative direction side in z-axis direction of circuit substrate 202a～202d On.Socket 204a～204d is connected with adapter 100a～100d respectively.Thus, via socket 204a, 204b, to adapter The center conductor 108 of 100a, 100b be applied to be transmitted between circuit substrate 202a, 202b for example have 0.8GHz～ The high-frequency signal of 5GHz frequency.And, via socket 204c, 204d, apply to the center conductor 108 of adapter 100c, 100d The high-frequency signal for example with 0.8GHz～5GHz frequency being transmitted between circuit substrate 202c, 202d.Adapter The external conductor 110 of 100a～100d is maintained at earthing potential via circuit substrate 202a～202d respectively.Thus, cascade type Multicore cable 10 connects between circuit substrate 202a and circuit substrate 202b, and connects circuit substrate 202c and circuit substrate 202d Between.
Herein, there is jump between the interarea of the negative direction side in z-axis direction of set of cells 206 and socket 204a～204d. Thus, the two ends of line part 12a of duplexer 12 are bent, thus adapter 100a～100d respectively with socket 204a～204d Connect.
(manufacture method of high-frequency signal circuit)
Below, with reference to Fig. 2, the manufacture method of cascade type multicore cable 10 is illustrated.Below, to make a stacking Illustrate as a example the situation of type multicore cable 10, but in fact, by stacking and cutting large-scale electrolyte sheet material, can make simultaneously Make multiple cascade type multicore cables 10.
First, electrolyte sheet material 18a, 18b that be formed with Copper Foil in whole surface, being made up of are prepared thermoplastic resin. In addition, preparing electrolyte sheet material 18c, this electrolyte sheet material 18c is formed with the thermoplastic resin of Copper Foil by whole surface and the back side Fat is constituted.The surface of the Copper Foil of electrolyte sheet material 18a～18c is for example implemented for antirust zinc-plated smoothing.Copper The thickness of paper tinsel is 10 μm～20 μm.
Then, using photo-mask process, on the surface of electrolyte sheet material 18a formed Fig. 2 shown in outside terminal 16a～ 16d and earth conductor 22.Specifically, the Copper Foil of electrolyte sheet material 18a face side print outer shown in its shape and Fig. 2 Portion terminal 16a～16d and earth conductor 22 identical resist.Then, etch processes are implemented to Copper Foil, thus remove not resisted The Copper Foil of the part that erosion agent covers.Afterwards, remove resist.Thus, the surface of electrolyte sheet material 18a is formed as Fig. 2 institute Outside terminal 16a～the 16d showing and earth conductor 22.
Then, using photo-mask process, the holding wire 20 shown in Fig. 2 is formed on the surface of electrolyte sheet material 18b.Additionally, Using photo-mask process, the signal line 21 shown in Fig. 2 is formed on the surface of electrolyte sheet material 18c.In addition, utilizing photoetching work Sequence, forms the earth conductor 24 shown in Fig. 2 on the back side of electrolyte sheet material 18c.Signal line 20,21 and earth conductor 24 Forming method is identical with the forming method of outside terminal 16a～16d and earth conductor 22, therefore, omits the description.
Then, the position that will form via conductor b1～b18 upper to electrolyte sheet material 18a～18c, irradiates from rear side and swashs Light beam, forms through hole.Afterwards, conductive paste is filled in the through hole formed on electrolyte sheet material 18a～18c.
Then, successively electrolyte sheet material 18a～18c is laminated from the positive direction side in z-axis direction to negative direction side.So Afterwards, the positive direction side from z-axis direction and negative direction side, to electrolyte sheet material 18a～18c heating pressurization, make electrolyte sheet material 18a ～18c softens thus being crimped and integration, and, so that the conductive paste being filled in through hole is solidified, to form Fig. 2 Shown via conductor b1～b18.In addition, for via conductor b1～b18, being not necessarily intended to be fully filled with through hole with conductor, For example via conductor can be formed by only forming conductor along through hole inner peripheral surface.
Finally, by coating resin (resist) thickener, in the surface of electrolyte sheet material 18a and electrolyte sheet material 18b The back side form protective layer 14,15 respectively.
(effect)
According to the cascade type multicore cable 10 using said structure, can ensure that the isolation between two signal lines 20,21 Property.More specifically, in the flexible flat cable 500 described in patent documentation 1, straight angle conductor 502 is arranged on identical layer, because , there is the isolation being difficult to ensure that between straight angle conductor 502 in this.
Herein, in cascade type multicore cable 10, signal line 20 and signal line 21 are arranged at different layers.Thus, The distance between signal line 20 in cascade type multicore cable 10 and signal line 21 are more than flat in flexible flat cable 500 Distance between angle conductor 502.Thus, the electric capacity being formed between signal line 20,21 is less than the electricity being formed between straight angle conductor 502 Hold.Thus, noise can be suppressed to transmit between signal line 20,21.As a result, comparing the isolation in flexible flat cable 500 Property, the isolation in cascade type multicore cable 10 can be better assured that.Particularly two signal lines 20,21 are that differential transmission is used Digital signal line in the case of, the crosstalk between signal line 20,21 can be reduced.
For the above reasons, using the cascade type multicore cable 10 of said structure, can ensure that between signal line 20,21 Isolation.More specifically, in cascade type multicore cable 10, in earth conductor 22, when overlooking from z-axis direction, opening 30 are overlapped with signal line 20.Therefore, it is difficult to form electric capacity, from signal line between signal line 20 and earth conductor 22 20 noises giving off are difficult to be transferred to earth conductor 22.Thus, the noise giving off from signal line 20 can be suppressed to pass through to connect Earthed conductor 22 is transferred to signal line 21.As a result, in cascade type multicore cable 10, isolation can be further ensured that.
In cascade type multicore cable 10, in earth conductor 24, when overlooking from z-axis direction, opening 31 and holding wire Road 21 overlaps.Therefore, it is difficult to form electric capacity between signal line 21 and earth conductor 24, give off from signal line 21 Noise is difficult to be transferred to earth conductor 24.Thus, the noise giving off from signal line 21 can be suppressed to pass by earth conductor 24 Defeated to signal line 20.As a result, in cascade type multicore cable 10, isolation can be further ensured that.
According to cascade type multicore cable 10, can try hard to realize the slimming of duplexer 12.More specifically, many in cascade type In core cable 10, opening 30 is arranged at earth conductor 22, and when overlooking from z-axis direction, opening 30 is overlapped with signal line 20. Thus it is difficult to form electric capacity between line part 20 and earth conductor 22.Accordingly, it is capable to shorten signal line 20 and earth conductor 22 The distance between D1 and do not increase the electric capacity being formed between signal line 20 and earth conductor 22.That is, signal line 20 can be made It is close with earth conductor 22, and tries hard to realize the slimming of duplexer 12, and do not reduce the characteristic impedance of signal line 20.
According to cascade type multicore cable 10, can try hard to realize the slimming of duplexer 12.More specifically, many in cascade type In core cable 10, opening 31 is arranged at earth conductor 24, and when overlooking from z-axis direction, opening 31 is overlapped with signal line 21. Thus it is difficult to form electric capacity between line part 21 and earth conductor 24.Accordingly, it is capable to shorten signal line 21 and earth conductor 24 The distance between D4 and do not increase the electric capacity being formed between signal line 21 and earth conductor 24.That is, signal line 21 can be made It is close with earth conductor 24, and try hard to the characteristic impedance realized the slimming of duplexer 12 and do not reduce signal line 21.If Realize the slimming of duplexer 12, then cascade type multicore cable 10 is easier to be bent.
As described above, according to cascade type multicore cable 10, ground connection will be arranged at by equitant opening 30 with signal line 20 Conductor 22, will be arranged at earth conductor 24 by equitant opening 31 with signal line 21, so as to take into account isolation guarantee with And the slimming of duplexer 12.
In addition, according to cascade type multicore cable 10, signal line 20 can be suppressed to produce the noise of low frequency.More specifically, When z-axis direction is overlooked, in cascade type multicore cable 10, signal line 20 is alternately stacked with opening 30 and bridge part 32.Thus, It is less than the signal with the equitant part of bridge part 32 with the characteristic impedance Z1 of the signal line 20 of the equitant part of opening 30 The characteristic impedance Z2 of circuit 20.Thus, the characteristic impedance of signal line 20 cycle between characteristic impedance Z1 and characteristic impedance Z2 Property fluctuation.As a result, in signal line 20, producing short wavelength's (i.e. high frequency) standing wave between bridge part 32.On the other hand, exist It is difficult between outside terminal 16a, 16b produce long wavelength's (i.e. low frequency) standing wave.In addition, according to cascade type multicore cable 10, can press down Signal line 20 processed produces the noise of low frequency.In addition, according to the reasons why identical, in cascade type multicore cable 10, can suppress to believe Number circuit 21 produces the noise of low frequency.
Additionally, in cascade type multicore cable 10, by bridge part 32 between the standing wave that produces to produce the noise of high frequency.But Be, fully short by being designed to the distance between bridge part 32, so as to by the frequency setting of noise in signal line 20 institute Outside the frequency band of high-frequency signal of transmission.For this reason, by bridge part 32 with 1/2 ripple than the high-frequency signal being transmitted in signal line 20 Length will to be configured along signal line 20 in short interval.For the same reason, by bridge part 32 with than signal line 1/2 wavelength of the high-frequency signal being transmitted in 21 will to be configured along signal line 21 in short interval.
In cascade type multicore cable 10, the size of the characteristic impedance Z3 at the two ends of preferred signals circuit 20 is located at and opening The characteristic of the signal line 20 of the characteristic impedance Z1 of the signal line 20 of the part of 30 overlaps and the part overlapping with bridge part 32 Between impedance Z 2.Thus, in signal line 20, easily produce the standing wave of short wavelength between bridge part 32, in signal line 20 It is difficult between two ends produce the standing wave of long wavelength.As a result, in cascade type multicore cable 10, more effectively suppression low frequency is made an uproar The generation of sound.For the same reasons, the size of the characteristic impedance Z6 at the two ends of preferred signals circuit 21 is located at and opening 31 weight The characteristic impedance of the signal line 21 of the characteristic impedance Z4 of the signal line 21 of folded part and the part overlapping with bridge part 33 Between Z5.
In addition, in the case that signal line 20,21 is used as the paired line used in differential transmission circuit, can prevent Only eye pattern (eye pattern) skew ideal value.
In addition, signal line 20,21 is being used as different types of high-frequency signal (such as GSM (registered trade mark) 900 He GSM (registered trade mark) 1800) circuit in the case of, can ensure that mutual isolation.
(variation 1)
Below, it is described with reference to the cascade type multicore cable 10a involved by variation 1.Fig. 7 is involved by variation 1 Cascade type multicore cable 10a stereoscopic figure.Fig. 8 is that the decomposition of the cascade type multicore cable 10a involved by variation 1 is stood Body figure.
As shown in Figures 7 and 8, cascade type multicore cable 10a and the difference of cascade type multicore cable 10 are, stacking Type multicore cable 10a is the rectangle extending along the x-axis direction.That is, cascade type multicore cable 10a does not diverge.
In addition, in cascade type multicore cable 10a, replacing adapter 100a～100d using adapter 300a, 300b.Even Meet device 300a, 300b to be separately mounted on the surface of connecting portion 12b, 12c, and be electrically connected to wire size circuit 20,21 and ground connection lead Body 22,24.The structure of adapter 300a, 300b is identical, therefore, taking the structure of adapter 300b as a example illustrates below.Fig. 9 It is the stereoscopic figure of adapter 300b and the sectional structure chart of cascade type multicore cable 10a.
As shown in Fig. 7 and Fig. 9, adapter 300b includes connector body 302, outside terminal 304a, 304b, 306, center Conductor 308,310 and external conductor 312.Connector body 302 is in the shape being linked with cylinder on rectangular slab, and by resin etc. Insulant is made.
On the face of the negative direction side in the z-axis direction of connector body 302, outside terminal 304a is arranged on and outer end At the relative position of sub- 16b.On the face of the negative direction side in the z-axis direction of connector body 302, outside terminal 304b is arranged At the position relative with outside terminal 16d.On the face of the negative direction side in the z-axis direction of connector body 302, by outer end Son 306 is arranged at the position corresponding with portion of terminal 22c exposed via opening Hb.
Center conductor 308 is arranged on the cylinder center of connector body 302, and is connected with outside terminal 304a.Center Conductor 308 is the signal terminal of high-frequency signal that input or output signal circuit 20 are transmitted.
Center conductor 310 is arranged at the cylinder of the inner side of connector body 302, and is connected with outside terminal 304b.In Heart conductor 310 is the signal terminal of high-frequency signal that input or output signal circuit 21 are transmitted.
External conductor 312 is arranged at the inner peripheral surface of the cylinder in the outside of connector body 302, and with outside terminal 306 phase Connect.External conductor 312 is to maintain the ground terminal of earthing potential.
It is connected with outside terminal 16b with outside terminal 304a, outside terminal 304b is connected with outside terminal 16d, outward The mode that portion's terminal 306 is connected with portion of terminal 22c, the adapter 300b with constituted above is arranged on connecting portion 12c's On surface.Thus, signal line 20 and center conductor 308 are electrically connected.Thus, signal line 21 and center conductor 310 phase Connect.Additionally, earth conductor 22,24 and external conductor 312 are electrically connected.
By following illustrated in the way of come using cascade type multicore cable 10a.Figure 10 is to bow from y-axis direction and z-axis direction Scheme obtained from the electronic equipment 200 of cascade type multicore cable 10a depending on employing.
Electronic equipment 200 include cascade type multicore cable 10a, circuit substrate 202a, liquid crystal panel 203, socket 404a, 404b, set of cells (metallic object) 206 and housing 210.
For example it is provided with the drive circuit for driving liquid crystal panel 203 in circuit substrate 202a.Set of cells 206 is, for example, Li-Ion rechargeable battery, has the structure that its surface is covered by metal cap.Circuit substrate 202a, set of cells 206 and liquid crystal surface The negative direction side from x-axis direction for the plate 203 is arranged in order towards positive direction side.
The surface (more precisely, protective layer 14) of duplexer 12 is contacted with set of cells 206.And, duplexer 12 Surface and set of cells 206 are passed through bonding agent etc. and are fixed.
Socket 404a, 404b are separately positioned on the negative direction side in z-axis direction of circuit substrate 202a and liquid crystal panel 203 On interarea.Socket 404a, 404b are connected with adapter 300a, 300b respectively.Thus, via socket 404a, 404b, to connection The center conductor 308 of device 300a, 300b is applied to for example having of being transmitted between circuit substrate 202a and liquid crystal panel 203 The high-frequency signal of 0.8GHz～5GHz frequency.Thus, via socket 404a, 404b, to the center conductor of adapter 300a, 300b 310 are applied to the height for example with 0.8GHz～5GHz frequency being transmitted between circuit substrate 202a and liquid crystal panel 203 Frequency signal.Above-mentioned two high-frequency signal is the differential transmission signal of 180 ° of phase.Additionally, adapter 300a, 300b's is outer Portion's conductor 312 keeps earthing potential via circuit substrate 202a, liquid crystal panel 203 and socket 404a, 404b.Thus, it is laminated Type multicore cable 10a is connected between circuit substrate 202a, liquid crystal panel 203.
Herein, there is jump between the interarea of the negative direction side in z-axis direction of set of cells 206 and socket 404a, 404b.Cause And, by the bending two ends of line part 12a of duplexer 12, thus adapter 300a, 300b are respectively with socket 404a, 404b even Connect.
According to the cascade type multicore cable 10a using said structure, identical with cascade type multicore cable 10, will be with holding wire The equitant opening 30 in road 20 is arranged at earth conductor 22, will be arranged at earth conductor by equitant opening 31 with signal line 21 24, so as to take into account isolation guarantee and duplexer 12 slimming.
And according to cascade type multicore cable 10a, identical with cascade type multicore cable 10, signal line 20,21 can be suppressed Produce the noise of low frequency.
(variation 2)
Below, it is described with reference to the cascade type multicore cable 10b involved by variation 2.Figure 11 is to overlook variation 2 institute The signal line 20,21 of cascade type multicore cable 10b being related to and the figure of earth conductor 22,24 gained.Additionally, for cascade type The stereoscopic figure of multicore cable 10b and exploded perspective view, quote Fig. 1 and Fig. 2.
As shown in figure 11, the shape of the shape of opening 30,31 of cascade type multicore cable 10b and signal line 20,21 is not It is same as cascade type multicore cable 10.
First, in opening 30,31, the region of x-axis direction middle body is defined as region a1.In opening 30,31, The region of the end of the negative direction side in x-axis direction is defined as region a2.In opening 30,31, by the positive direction side in x-axis direction The region of end be defined as region a3.Region between region a1 and region a2 is defined as region a4.By region a1 and area Region between the a3 of domain is defined as region a5.
As shown in figure 11, the width in the y-axis direction of the opening 30 in the a1 of region is width W1.The opening of region a2, a3 30 width in the y-axis direction are the width W2s less than width W1.And, in the a4 of region, opening 30 is as near x-axis The positive direction side in direction and the taper that broadens, thus the width of opening 30 increases continuously.In the a5 of region, opening 30 is as leaning on The positive direction side in nearly x-axis direction and the taper that narrows, thus the width of opening 30 is continuously reduced.
As shown in figure 11, the width in the y-axis direction of the opening 31 in the a1 of region is width W1.The opening of region a2, a3 31 width in the y-axis direction are the width W2s less than width W1.In the a4 of region, opening 31 is as near x-axis direction Positive direction side and the taper that broadens, thus the width of opening 31 increases continuously.In the a5 of region, opening 31 is as near x Axial positive direction side and the taper that narrows, thus the width of opening 31 is continuously reduced.
In addition, the live width of signal line 20 periodically changes as shown in Figure 11.The equitant part with opening 30 Signal line 20 live width W3 than big with live width W4 of the signal line 20 of the equitant part of bridge part 32.And, In signal line 20, the end of the negative direction side in x-axis direction for the equitant part is as near x-axis direction with opening 30 Positive direction side and the taper that broadens.Thus, the live width of signal line 20 increases continuously.And, in signal line 20, with opening The cone that the end of the positive direction side in x-axis direction for the 30 equitant parts is as the positive direction side near x-axis direction and narrows Shape.Thus, the live width of signal line 20 is continuously reduced.
In addition, the live width of signal line 21 periodically changes as shown in Figure 11.The equitant part with opening 31 Signal line 21 live width W3 than big with live width W4 of the signal line 21 of the equitant part of bridge part 33.And, In signal line 21, the end of the negative direction side in x-axis direction for the equitant part is as near x-axis direction with opening 31 Positive direction side and the taper that broadens.Thus, the live width of signal line 21 increases continuously.And, in signal line 21, with opening The cone that the end of the positive direction side in x-axis direction for the 31 equitant parts is as the positive direction side near x-axis direction and narrows Shape.Thus, the live width of signal line 21 is continuously reduced.
According to the cascade type multicore cable 10b using said structure, identical with cascade type multicore cable 10, will be with holding wire The equitant opening 30 in road 20 is arranged at earth conductor 22, will be arranged at earth conductor by equitant opening 31 with signal line 21 24, so as to take into account isolation guarantee and duplexer 12 slimming.
And according to cascade type multicore cable 10b, identical with cascade type multicore cable 10, signal line 20,21 can be suppressed Produce the noise of low frequency.
In addition, according to cascade type multicore cable 10b, the width W1 of the opening 30,31 in the a1 of region is more than in region a2, a3 Opening 30,31 width W2.Therefore, the electric capacity being formed between signal line 20,21 in the a1 of region can be less than in region a2, a3 The electric capacity being formed between signal line 20,21.Therefore, the characteristic impedance of the signal line 20,21 in the a1 of region is than region a2, a3 In signal line 20,21 characteristic impedance big.Thus, the characteristic impedance of signal line 21,21 can be with opening 30,31 The negative direction side from x-axis direction to increase close to positive direction side, can reduce afterwards.Accordingly, it is capable to suppression signal line 20,21 Discontinuous larger variation in characteristic impedance.As a result, in signal line 20,21, can suppress high-frequency signal Reflection.
In addition, in cascade type multicore cable 10b, being continually varying in the width of region a4, a5 split shed 30.By This, in region a4, a5, the width in the gap between signal line 20 and earth conductor 22 can be gradually increased or be gradually reduced. Similarly, the width in the gap between signal line 21 and earth conductor 24 can be gradually increased or be gradually reduced.Therefore, produce Around signal line 20 and by the magnetic flux in gap between signal line 20 and earth conductor 22 can in region a4, a5 by Cumulative big or be gradually reduced.Result from around signal line 21 and by the gap between signal line 21 and earth conductor 24 Magnetic flux can be gradually increased in region a4, a5 or be gradually reduced.That is, in region a4, a5, magnetic field energy can be suppressed to occur larger Variation.As a result, near the border of region a1 and region a2, a3, can suppress the reflection of high-frequency signal.
In addition, in opening 30, signal line 20 is not relative with earth conductor 22, therefore, signal line 20 and ground connection The electric capacity being formed between conductor 22 is minimum.Therefore, even if increasing live width, signal line 20 and the earth conductor of signal line 20 The electric capacity being formed between 22 also hardly increases, and the characteristic impedance of signal line 20 will not reduce.Therefore, many in cascade type In core cable 10b, when overlooking from z-axis direction, live width W3 of the signal line 20 of part overlapping with opening 30 is more than and bridge Live width W4 of the signal line 20 of the part of socket part 32 overlap.Thus, the resistance value of signal line 20 reduces, cascade type multicore electricity Alternating-current resistance in cable 10b reduces.Additionally, for the same reasons, the resistance value of signal line 21 also reduces.
(variation 3)
Below, it is described with reference to the cascade type multicore cable 10c involved by variation 3.Figure 12 is to overlook variation 3 institute The signal line 20,21 of cascade type multicore cable 10c being related to and the figure of earth conductor 22,24 gained.Additionally, for cascade type The stereoscopic figure of multicore cable 10c and exploded perspective view, quote Fig. 1 and Fig. 2.
Cascade type multicore cable 10c is with the difference of cascade type multicore cable 10, in the y-axis direction opening 30, 31 is inconsistent.More specifically, bridge part 32 is in x-axis direction (direction that signal line 20 extends) is upper positioned at opening 31 Centre.Bridge part 33 is in x-axis direction (direction that signal line 21 extends) the upper central authorities being located at opening 30.
According to the cascade type multicore cable 10c using said structure, identical with cascade type multicore cable 10, will be with holding wire The equitant opening 30 in road 20 is arranged at earth conductor 22, will be arranged at earth conductor by equitant opening 31 with signal line 21 24, so as to take into account isolation guarantee and duplexer 12 slimming.
And according to cascade type multicore cable 10c, identical with cascade type multicore cable 10, signal line 20,21 can be suppressed Produce the noise of low frequency.
In addition, cascade type multicore cable 10c is also because following reason can ensure that isolation.More specifically, many in cascade type In core cable 10c, it is more than with the characteristic impedance Z1 of the signal line 20 of the equitant part of opening 30 and overlaps with bridge part 32 The signal line 20 of part characteristic impedance Z2.Therefore, if signal line 20 transmission high-frequency signal, in signal line 20 with The part of opening 30 overlap can become the maximum antinode of voltage amplitude.The equitant part meeting with bridge part 32 in signal line 20 Become the minimum node of voltage amplitude.For the same reasons, overlapping with opening 31 part in signal line 21 can become electricity The maximum antinode of pressure amplitude.In signal line 21, equitant part can become the minimum node of voltage amplitude with bridge part 33.
Herein, in cascade type multicore cable 10c, as described above, bridge part 32 is located in opening 31 in the direction of the x axis Centre.Thus, the antinode in the node and signal line 21 in signal line 20 is adjacent in the y-axis direction.In addition, it is many in cascade type In core cable 10c, bridge part 33 is located at the central authorities of opening 30 in the direction of the x axis.Thus, the antinode in signal line 20 and signal Node in circuit 21 is adjacent in the y-axis direction.At node in signal line 20,21, current potential hardly changes.Cause This, the potential change at node in signal line 20,21 hardly becomes to the current potential at the antinode in signal line 20,21 Move and impact.In addition, the potential change at node in signal line 20,21 is hardly subject in signal line 20,21 Antinode at potential change impact.Therefore, the potential change of the potential change of signal line 20 and signal line 21 is almost It is independent of each other.As a result, in cascade type multicore cable 10c, can ensure that isolation.
(variation 4)
Below, it is described with reference to the cascade type multicore cable 10d involved by variation 4.Figure 13 is involved by variation 4 Cascade type multicore cable 10d stereoscopic figure.Figure 14 is the parallel of the cascade type multicore cable 10d involved by variation 4 Exploded perspective view in the A1 of region.
As shown in figure 13, duplexer 12 extends in the direction of the x axis, and the end of the positive direction side in x-axis direction and losing side It is respectively provided with the structure being bifurcated into two ends to the end of side.As shown in figure 14, duplexer 12 is that protective layer 14 and electricity are situated between The stacking of the flexibility that the positive direction side from z-axis direction for matter sheet material (substrate layer) 18a～18e stacks gradually towards negative direction side and constitutes Body.Hereinafter, the interarea of the positive direction side in the z-axis direction of duplexer 12 is referred to as surface, by the losing side in the z-axis direction of duplexer 12 It is referred to as the back side to the interarea of side.
When z-axis direction is overlooked, electrolyte sheet material 18a～18e is in and duplexer 12 identical shape.Electrolyte sheet material The thermoplastic resin that 18a～18e is had flexibility by polyimides etc. is constituted.Thickness example after electrolyte sheet material 18a～18e stacking As for 25 μm～200 μm.Hereinafter, the interarea of the positive direction side in the z-axis direction of electrolyte sheet material 18a～18e is referred to as surface, will The interarea of the negative direction side in z-axis direction of electrolyte sheet material 18a～18e is referred to as the back side.
As shown in figure 14, earth conductor 22 (the first earth conductor) is arranged at duplexer 12, more specifically, is arranged at electricity The surface of media sheet 18a.When z-axis direction is overlooked, earth conductor 22 be in and duplexer 12 same shape, and by with Silver, copper are that the less metal material of resistivity of main component is made.
As shown in figure 14, earth conductor 24 (the second earth conductor) is arranged in duplexer 12 and is different from earth conductor 22 Layer, more specifically, is arranged at the surface of electrolyte sheet material 18e.When z-axis direction is overlooked, earth conductor 24 is in and duplexer 12 same shapes, and be made by with silver, the less metal material of the resistivity as main component for the copper.
As shown in figure 14, signal line 20 is arranged between earth conductor 22 and earth conductor 24 in the z-axis direction, more For body, it is arranged at the surface of electrolyte sheet material 18b.When overlooking from z-axis direction, signal line 20 and earth conductor 22,24 Overlapping.Thus, signal line 20 and earth conductor 22,24 form strip lines configuration.Signal line 20 by with silver, copper be main The less metal material of resistivity of composition is made.
As shown in figure 14, signal line 21 is arranged between earth conductor 22 and earth conductor 24 in the z-axis direction, and believes Number circuit 21 is arranged at ratioing signal circuit 20 closer to the position of earth conductor 24, and more specifically, signal line 21 is arranged Surface in electrolyte sheet material 18d.When z-axis direction is overlooked, signal line 21 is in Parallel Interval A1 along signal line 20 Extend.However, when z-axis direction is overlooked, signal line 20 central authorities' friendship in the x-axis direction of Parallel Interval A1 with signal line 21 Fork.
Herein, as shown in figure 14, the multiple openings 30 being rectangle are provided with earth conductor 22.Overlook from z-axis direction When, multiple openings 30 are overlapping with signal line 20, and are arranged along this signal line 20 and arrange.
And, when z-axis direction is overlooked, in earth conductor 22, intersect in same signal line 20 and signal line 21 Partly overlapping position, is provided with lattice portion 22f.Similarly, when z-axis direction is overlooked, in earth conductor 24, in same holding wire The partly overlapping position that road 20 and signal line 21 intersect, is provided with lattice portion 24f.Lattice portion 22f, 24f is by x-axis direction Multiple linear conductors of upper extension and the multiple linear conductors extending in the y-axis direction configure webbed structure.
In addition, cascade type multicore cable 10d also has earth conductor 50.When z-axis direction is overlooked, earth conductor 50 is with letter Number circuit 20 and partly overlapping that signal line 21 intersects, and earth conductor 50 be arranged in the z-axis direction signal line 20 with Between signal line 21.Specifically, earth conductor 50 is arranged on the surface of electrolyte sheet material 18c.Earth conductor 50 with connect Earthed conductor 22,24 is attached by via conductor.
The substantially whole surface of protective layer 14 covering dielectric sheet material 18a.Thus, protective layer 14 covers earth conductor 22. Protective layer 14 is for example made up of flexible resin(a)s such as anticorrosive additive materials.
The other structures of cascade type multicore cable 10d are identical with the structure of cascade type multicore cable 10, therefore omit the description.
By following illustrated in the way of come using cascade type multicore cable 10d.Figure 15 is to overlook using stacking from z-axis direction Figure obtained by the electronic equipment 200 of type multicore cable 10d.
Electronic equipment 200 include cascade type multicore cable 10d, circuit substrate 202a, 202b, set of cells (metallic object) 206, Housing 210 and antenna 212.
Set of cells 206 is, for example, Li-Ion rechargeable battery, has the structure that its surface is covered by metal cap.Circuit substrate 202a, the set of cells 206 and circuit substrate 202b negative direction side from x-axis direction are arranged in order towards positive direction side.Additionally, antenna 212 are connected with circuit substrate 202a.
Cascade type multicore cable 10d is attached between circuit substrate 202a and circuit substrate 202b.Additionally, duplexer 12 surface (being more exactly protective layer 14) is contacted with set of cells 206.And, the surface of duplexer 12 and set of cells 206 It is fixed by bonding agent etc..
According to the cascade type multicore cable 10d using said structure, identical with cascade type multicore cable 10, will be with holding wire The equitant opening 30 in road 20 is arranged at earth conductor 22, will be arranged at earth conductor by equitant opening 31 with signal line 21 24, so as to take into account isolation guarantee and duplexer 12 slimming.
And, according to cascade type multicore cable 10d, identical with cascade type multicore cable 10, signal line 20,21 can be suppressed Produce the noise of low frequency.
Additionally, in cascade type multicore cable 10d, when z-axis direction is overlooked, earth conductor 50 is with signal line 20 and letter What number circuit 21 intersected partly overlaps, and earth conductor 50 be arranged in the z-axis direction signal line 20 and signal line 21 it Between.Thus, can try hard to guarantee the isolation between signal line 20 and signal line 21.
And, in cascade type multicore cable 10d, when z-axis direction is overlooked, in same signal line 20 and signal line 21 The partly overlapping position intersecting is provided with lattice portion 22f, 24f.Thus, the portion intersecting in signal line 20 and signal line 21 In point, it is difficult to form electric capacity between signal line 20,21 and lattice portion 22f, 24f.Accordingly, it is capable to the letter in increase relevant portion The live width of number circuit 20,21.As a result, the resistance value of signal line 20,21 reduces, the height in cascade type multicore cable 10d Frequency resistance reduces.
(variation 5)
Below, it is described with reference to the cascade type multicore cable 10e involved by variation 5.Figure 16 is involved by variation 5 The connecting portion 12c of cascade type multicore cable 10e exploded perspective view.In addition, the stereoscopic figure of cascade type multicore cable 10e Quote Figure 14.
Cascade type multicore cable 10e is with the difference of cascade type multicore cable 10d, is provided with floating in opening 30 Moving-conductor 60.More specifically, floating conductor 60 is arranged on the surface of electrolyte sheet material 18a, and is located in opening 30.Float Conductor 60 is not connected with signal line 20,21 (signal line 20 is not shown) and earth conductor 22,24, and keeps the electricity that floats Position.So-called floating potential refers to the electricity between the current potential of signal line 20,21 (signal line 20 is not shown) and earthing potential Position.
According to the cascade type multicore cable 10e using said structure, identical with cascade type multicore cable 10, will be with holding wire Road 20 (signal line 20 not shown) equitant opening 30 is arranged at earth conductor 22, will equitant with signal line 21 open Mouthfuls 31 are arranged at earth conductor 24, so as to take into account isolation guarantee and duplexer 12 slimming.
And according to cascade type multicore cable 10e, identical with cascade type multicore cable 10, signal line 20 can be suppressed (not Signals shown circuit 20) produce low frequency noise.
And, cascade type multicore cable 10e is bonded in set of cells 206, so that protective layer 14 is connected with set of cells 206 Touch.Therefore, earth conductor 22 is relative with set of cells 206.Therefore, by arranging floating conductor in the opening 30 of earth conductor 22 60, thus preventing signal line 20 (signal line 20 is not shown) relative via opening 30 with set of cells 206.Thus, can reduce Give off noise from opening 30.As a result, even if the material of duplexer 12, interval occurred change, signal line 20 is (not shown Signal line 20) high frequency characteristics be not easy to change.
(other embodiment)
Cascade type multicore cable involved in the present invention is not limited to described cascade type multicore cable 10,10a～10e, at it Teachings interior energy is changed.
Figure 17 is the sectional structure chart of the cascade type multicore cable 10f involved by other embodiment.As shown in figure 17, Signal line 20a～20c and signal line 21a～21c can be set.
Figure 18 is the sectional structure chart of the cascade type multicore cable 10g involved by other embodiment.As shown in figure 18, layer Stack-type multicore cable 10g can be using cascade type multicore cable 10f two grades of structures being laminated in the z-axis direction.
Alternatively, it is also possible to the structure of cascade type multicore cable 10,10a～10e is combined.
Additionally, it is also possible to be provided with letter in cascade type multicore cable 10, a part of the parallel regions A1 of 10a～10e Number circuit 20 and the nonoverlapping region of earth conductor 24.That is, in a part of parallel regions A1, signal line 20 and ground connection are led Body 22 may be constructed microstrip line construction.Similarly, in a part for cascade type multicore cable 10, the parallel regions A1 of 10a～10e In it is also possible to be provided with signal line 21 and the nonoverlapping region of earth conductor 22.Thus, in relevant range, can be easily Bending duplexer 12.
Industrial practicality
The present invention can be used for cascade type multicore cable, especially particularly excellent in terms of can ensure that isolation.
Label declaration
10th, 10a～10e cascade type multicore cable
12 duplexers
14th, 15 protective layer
16a～16d outside terminal
18a～18e electrolyte sheet material
20th, 21 signal line
22nd, 24 earth conductor
30th, 31 opening
32nd, 33 bridge part

Claims (5)

1. cascade type multicore cable is it is characterised in that include：
Duplexer, this duplexer is constituted by being laminated multi-layer substrate layer；
First earth conductor, this first earth conductor is arranged at described duplexer；
Second earth conductor, this second earth conductor is arranged at different from described first earth conductor in described duplexer Layer；
First signal line, this first signal line is arranged at described first earth conductor and described second in the stacking direction and connects Between earthed conductor；And
Secondary signal circuit, this secondary signal circuit is located at described first earth conductor and described second ground connection in the stacking direction Between conductor, and it is arranged to compare described first signal line closer to this second earth conductor, overlook on stacked direction When, this secondary signal circuit extends along described first signal line in predetermined region,
Described first signal line, described first earth conductor and described second earth conductor form strip lines configuration,
Described secondary signal circuit, described first earth conductor and described second earth conductor form strip lines configuration,
When overlooking from stacked direction, described first earth conductor is provided with and described first holding wire in described predetermined region Equitant first opening in road and be not provided with the equitant opening with described secondary signal circuit,
When overlooking from stacked direction, described second earth conductor is provided with and described secondary signal line in described predetermined region Equitant second opening in road.
2. cascade type multicore cable as claimed in claim 1 it is characterised in that
Multiple described first openings arrange along described first holding wire,
Multiple described second openings arrange along described secondary signal line.
3. cascade type multicore cable as claimed in claim 2 it is characterised in that
When overlooking from stacked direction, the first bridge joint of set described first earth conductor between adjacent described first opening Portion is overlapped with described first signal line,
When overlooking from stacked direction, the second bridge joint of set described second earth conductor between adjacent described second opening Portion is overlapped with described secondary signal circuit,
Described first signal line extend direction on, described first bridging position in the central authorities of described second opening,
On the direction that described secondary signal circuit extends, described second bridging position is in the central authorities of described first opening.
4. the cascade type multicore cable as described in any one of claims 1 to 3 it is characterised in that
When overlooking from stacked direction, described first signal line is intersected in described predetermined region with described secondary signal circuit Fork,
Described cascade type multicore cable also includes：
3rd earth conductor, the 3rd earth conductor when stacked direction is overlooked with described first signal line and described second The part that signal line intersects overlaps, and is arranged between this first signal line and this secondary signal circuit.
5. the cascade type multicore cable as described in any one of claims 1 to 3 it is characterised in that
Described duplexer has flexibility.
CN201380012033.1A 2012-06-19 2013-02-06 Cascade type multicore cable Active CN104205249B (en)

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JP2012137616A JP5477422B2 (en) 2012-01-06 2012-06-19 High frequency signal line
PCT/JP2013/052695 WO2013190859A1 (en) 2012-06-19 2013-02-06 Layered multi-core cable

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CN104205249A (en) 2014-12-10
CN106602193A (en) 2017-04-26
WO2013190859A1 (en) 2013-12-27

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