JPWO2020036148A1 - Electronic circuit boards, communication circuits, and their connection methods - Google Patents

Abstract

Provide a small electronic circuit board, a communication circuit, and a connection method thereof that can be connected in parallel even when the mounting angle is changed. The electronic circuit board (100) according to the present embodiment is formed on the first board (101) and the first board (101) to connect the first electronic circuit and the second electronic circuit. An electronic circuit board (100) including a plurality of first couplers (43) of the above, on the circumference of the first circle (C1) in a plan view of the first board (101). K first couplers (43) (K is an integer of 4 or more) are arranged at intervals, are concentric circles of the first circle (C1), and are larger than the first circle (C1). On the circumference of the circle (C2) of 2, (m × K) (m is an integer of 1 or more) first couplers (43) are arranged at intervals, and the first circle (C1) The first coupler (43) is arranged point-symmetrically with respect to the center (0).

Description

The present invention relates to an electronic circuit board having a plurality of couplers, a communication circuit, and a connection method thereof.

The inventor of the present application has proposed an electronic circuit that performs data communication between substrates by using capacitive coupling and inductive coupling (collectively referred to as electromagnetic coupling) (see, for example, Patent Documents 1 to 4). ). In such an electronic circuit, a coupler is attached to a flexible printed circuit board (FPC), a printed circuit board (Printed Circuit Board; PCB), a module, and a terminal (hereinafter, collectively abbreviated as a board). It is formed.

In Patent Document 1, a signal line is used as a coupler. Two signal lines (signal line and feedback signal line) arranged in parallel are formed on each substrate (FIG. 33). The signal line and the feedback signal line are terminated and matched using a resistor. The signal line and feedback signal line of one substrate are arranged so as to be parallel to and in the same direction as the signal line and feedback signal line of the other substrate. By stacking the substrates, the signal lines are arranged close to each other. Since the signal lines overlap and the feedback signal lines overlap, wireless communication can be performed by electromagnetic field coupling.

Patent Document 2 discloses a communication device using a signal line as a coupler. In Patent Document 2, since a differential signal is used, a lead transmission line is connected to both ends of one signal line. A positive signal is input to the transmission line from one of the lead transmission lines, and a negative signal is input to the transmission line from the other lead transmission line. Further, it is disclosed that it can be installed rotatably by using an arc-shaped transmission line (FIG. 48).

In the rotation information transmission device of Patent Document 3, the arc-shaped coupler and the electromagnetic field coupling of the arc-shaped coupler shorter than the arc-shaped coupler are coupled. It is disclosed that the central angle of the first arc-shaped coupler is 350 ° or more (paragraph 0032). According to the rotation information transmission device of Patent Document 3, data can be transmitted in a non-contact manner between relatively rotating substrates.

Patent Document 4 discloses a semiconductor integrated circuit that performs electromagnetic field communication by arranging a transmitting coil and a receiving coil close to each other. In a plan view, the transmitting coil and the receiving coil are formed in a square shape. Further, a coil array having 3 rows and 3 columns or a coil array having 6 rows and 6 columns is used.

Japanese Patent No. 5213087 Japanese Unexamined Patent Publication No. 2014-33432 International release 2018/0126222 Japanese Unexamined Patent Publication No. 2017-139314

In inter-module communication using such a coupler, it may be required to change the mounting angle of the connection portion. For example, inter-module communication may be applied to a connector for connecting an organic light emitting diode (OLED) display and a set-top box with an FPC. When applied to a connector, the thickness of the OLED display is as thin as about 3.5 mm. For this reason, conventional mechanical connectors are thick and unusable, and electronic and thin non-contact connectors are required. Further, since the number of data lines is 8 or 16, even when FPC is used, it is hard and difficult to bend.

Therefore, in order to be able to change the relative position of the OLED display and the set top box, the connector can be connected by changing the mounting angle of the connector to four angles, for example, 0 degree, 90 degree, 180 degree, and 270 degree. A connector is required.

In the case of a coupler using a linear transmission line as in Patent Documents 1 and 2, it is difficult to change the mounting angle because the transmission lines need to be arranged in parallel. Further, when an arc-shaped coupler is used, the mounting angle can be changed by matching the centers. Therefore, if a plurality of couplers are arranged concentrically, the mounting angle can be changed. However, the more the coupler is arranged on the outer circumference, the longer the coupler becomes.

For example, when the total length (circumferential length) of the coupler is 10 mm, the bandwidth of the coupler is 4.5 GH, and a digital signal can be transferred at 6 Gbps (Patent Document 3). However, if the 16 channels are arranged concentrically apart from each other so as not to interfere with each other, the total length of the outermost coupler becomes as long as about 400 mm. The bandwidth of the coupler is reduced to 1/40, and the transfer speed of the digital signal is also reduced to 1/40, 0.15 Gbps. Therefore, it cannot be used for a 4K display.

This problem is solved in Patent Document 3 by making one of the coupler pairs shorter than the other. However, there remains a problem that the outer peripheral coupler becomes larger and the mounting area becomes larger.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a small electronic circuit board, a communication circuit, and a connection method thereof that can be connected in parallel even when the mounting angle is changed.

The electronic circuit board according to the present embodiment is formed on the first board and the first board, and a plurality of first couplers for connecting the first electronic circuit and the second electronic circuit. In a plan view of the first substrate, K (K is an integer of 4 or more) of the first couplers are spaced on the circumference of the first circle. The first (m × K) (m is an integer of 1 or more) on the circumference of the second circle, which is a concentric circle of the first circle and is larger than the first circle. The first couplers are arranged point-symmetrically with respect to the center of the first circle.

The electronic circuit board according to the present embodiment is formed on the first board and the first board, and a plurality of first couplers for connecting the first electronic circuit and the second electronic circuit. In a plan view of the first substrate, K (K is an integer of 4 or more) of the first couplers are spaced on the circumference of the first circle. The first coupler is arranged point-symmetrically with respect to the center of the first circle, and the first coupler is arranged in the radial direction or the circumferential direction of the first circle. It is a signal line coupler having a signal line arranged along the line.

In the above electronic circuit board, a plurality of the first couplings in a plan view in which the first substrate overlaps with a second substrate provided with a plurality of second couplers of the second electronic circuit. From the state where the first substrate is placed on the second substrate so that the vessel is coupled to the plurality of second couplers, 90 of the first substrate is placed around the center of the first circle. The plurality of said first couplers may be coupled to the plurality of said second couplers in a state of being rotated by °.
In the electronic circuit board, one end of the first board may be provided with a port provided for taking out the input / output wiring connected to the first coupler.

In the above electronic circuit board, a lead transmission line may be drawn from the first coupler toward the inside of the first circle.

In the above electronic circuit board, a lead transmission line may be drawn from the first coupler toward the outside of the first circle.

In the above electronic circuit board, the K first couplers may be used as a coupler group, and a plurality of the coupler groups may be arranged rotationally symmetrically.
In the above electronic circuit, the plurality of first couplers may be arranged so as not to overlap each other.

The communication circuit according to the present embodiment is a communication circuit including a first electronic circuit board and a second electronic circuit board arranged to face the first electronic circuit board, and the first electronic circuit board is The electronic circuit board according to claim 1, wherein the second electronic circuit board includes a second board and a plurality of second couplers formed on the second board. Of the second couplers, L second couplers are arranged on the circumference of a third circle having the same size as the first circle, and (m × L) The second coupler is arranged on the circumference of a fourth circle having the same size as the second circle, and in plan view, the Lth couplers on the circumference of the third circle. When the two couplers overlap with the L first couplers, L communication paths are formed, and the (m × L) ones on the circumference of the fourth circle in a plan view. The second coupler of the above overlaps with the (m × L) first coupler to form (m × L) communication paths.

The communication circuit according to the present embodiment is a communication circuit including a first electronic circuit board and a second electronic circuit board arranged to face the first electronic circuit board, and the first electronic circuit board is The electronic circuit board according to claim 2, wherein the second electronic circuit board is a second board and L (L is an integer of 2 or more and K or less) formed on the second board. The L second couplers include 2 couplers, and the L second couplers are arranged on the circumference of a third circle having the same size as the first circle, and the L second couplers are arranged in a plan view. L communication paths are formed by stacking the first substrate and the second substrate so that the second coupler and the L first coupler overlap each other. Has been done.

The electronic circuit board according to the present embodiment is formed on the first board and the first board, and a plurality of first couplers for connecting the first electronic circuit and the second electronic circuit. Along the sides of a regular N-pointed polygon (N is an integer of 3 or more), K (K is an integer of N or more) of the first couplers are spaced apart from each other. The K first couplers are arranged N times rotationally symmetric with respect to the center of the regular N-pointed polygon.

In the above electronic circuit board, the first coupler may be formed in an arc shape.

In the above electronic circuit board, a port provided for taking out the input / output wiring connected to the first coupler may be arranged at one end of the first board.
In the above electronic circuit board, the plurality of first couplers may be arranged so as not to overlap each other.

A communication circuit including a first electronic circuit board and a second electronic circuit board, the first electronic circuit board is the above-mentioned electronic circuit board, and the second electronic circuit board is the second substrate. And L second couplers (L is an integer of 2 or more and K or less) formed on the second substrate, and the L second couplers are the regular N-sides. The first couplers are arranged on the sides of regular N-sides having the same size so that the L second couplers and the L first couplers overlap in a plan view. By stacking the substrate and the second substrate, L communication paths are formed.

A connection method for connecting a first electronic circuit board and a second electronic circuit board, wherein the first electronic circuit board is a plurality of first couplings provided on the first board and the first board. The second electronic circuit board includes a second board and a plurality of second couplers provided on the second board, and the first electronic circuit board includes a K. The first couplers (K is an integer of 2 or more) are arranged N times (N is an integer of 2 or more) in a rotational symmetry, and L (L is an integer of 2 or more and K or less). The mounting angle between the first electronic circuit board and the second electronic circuit board is 360 so that the first coupler and the second coupler overlap to form L communication paths. The first electronic circuit board and the second electronic circuit board are laminated as ° × n / N (n is an arbitrary integer greater than or equal to 0 and less than N).

According to this embodiment, it is possible to provide a small electronic circuit board, a communication circuit, and a connection method thereof that can be connected in parallel even when the mounting angle is changed.

It is a top view which shows the structure of the arc-shaped coupler. It is a top view which shows the arrangement of the coupler in the electronic circuit which concerns on Embodiment 1. FIG. It is a figure which shows the structure of the coupler using two parallel signal lines. It is a top view which shows the arrangement of the coupler in the electronic circuit which concerns on modification 1. FIG. It is a figure which shows the structure of the coupler using one signal line. It is a top view which shows the arrangement of the coupler in the electronic circuit which concerns on modification 2. FIG. It is a top view which shows the arrangement of the coupler in the electronic circuit which concerns on modification 3. FIG. It is a top view which shows the arrangement of the coupler in the electronic circuit which concerns on modification 4. FIG. It is a top view which shows the arrangement of the coupler in the electronic circuit which concerns on modification 5. FIG. It is a top view which shows the arrangement of the coupler in the electronic circuit which concerns on Embodiment 2. FIG. It is a top view for demonstrating two overlapping couplers. It is a top view which shows the arrangement of the coupler when the substrate is rotated. It is a top view which shows the arrangement of the coupler in the electronic circuit which concerns on modification 6. It is a top view which shows the arrangement of the coupler in the electronic circuit which concerns on modification 7. FIG.

The electronic circuit board (also simply referred to as an electronic circuit) according to the present embodiment includes a board and a plurality of couplers formed on the board. Two or more electronic circuits perform data communication using electromagnetic field coupling by a coupler. Specifically, the substrates are laminated so that the couplers face each other. Opposing couplers are coupled by electric field coupling (capacitive coupling) and / or magnetic field coupling (inductive coupling). Therefore, the two electronic circuits serve as communication circuits for transmitting and receiving data. Moreover, since the electromagnetic field coupling is used, data can be communicated in a non-contact manner.

The coupler can be, for example, a transmission line arranged parallel to each other so as to be coupled as a distributed constant system by an electric field and a magnetic field. Alternatively, the coupler can be an overlapping coil (inductive coupler) so as to be magnetically coupled (inductively coupled) as a lumped constant system. Alternatively, the coupler can be an electrode arranged parallel to each other so as to be electrically coupled (capacitively coupled) as a lumped constant system.

The substrate on which the coupler is formed is not particularly limited, and various substrates can be used. For example, the substrate may be an insulating substrate such as a printed circuit board (PCB) or a flexible printed circuit board (FPC substrate), or a semiconductor substrate such as a silicon substrate. The coupler is composed of wiring on the substrate. For example, when a coupler is formed on a semiconductor substrate such as a silicon substrate, the electronic circuit can be configured as one semiconductor chip.

Embodiment 1
Hereinafter, embodiments of the present invention will be described with reference to the drawings. The configuration of the coupler mounted on the electronic circuit board according to the present embodiment will be described with reference to FIG. FIG. 1 is a plan view schematically showing the configuration of the two coupler elements 41 and 51. In the following description, the plane parallel to the main surface (referred to as the substrate surfaces 47 and 57) of the substrate on which the coupler 43 and the coupler 53 are formed is defined as an XY plane. That is, the XY plane is a plane orthogonal to the direction in which the substrates are laminated (Z direction).

The coupler element 41 is formed on the substrate surface 47 of the first substrate, and the coupler element 51 is formed on the substrate surface 57 of the second substrate. The coupler elements 41 and 51 shown in FIG. 1 have the same configuration as the coupler shown in FIG. 48 of Patent Document 2. Specifically, a coupler 43, which is a first coupler, is formed on the substrate surface 47. The coupler 43 is a signal line formed in an arc shape. A drawer transmission line 44 is connected to one end of the arc-shaped coupler 43, and a drawer transmission line 45 is connected to the other end. For example, a positive electrode signal of the differential signal is input or output to the extraction transmission line 44, and a negative electrode signal of the differential signal is input or output to the extraction transmission line 45. That is, a signal is input or output to the coupler 43 via the extraction transmission lines 44 and 45.

Similarly, a coupler 53, which is a second coupler, is formed on the substrate surface 57 of the second substrate. The second coupler 53 is a signal line formed in an arc shape. A drawer transmission line 54 is connected to one end of the arc-shaped coupler 53, and a drawer transmission line 55 is connected to the other end.

The coupler 43 and the coupler 53 are bonded in a state where the two substrates are stacked and arranged. That is, the substrates are laminated so that the coupler 43 and the coupler 53 overlap. The radius of curvature of the coupler 43 and the coupler 53 are the same. Further, the size of the coupler 43 and the coupler 53 are the same. That is, the angles of the arcs of the coupler 43 and the coupler 53 are the same. Further, the couplers 43 and 53 are formed over almost the entire circumference of the circle. For example, it is desirable that the central angle of the arcuate couplers 43 and 53 is 350 ° or more.

By doing so, the coupler 43 and the coupler 53 can be coupled even when the substrate is rotated at an arbitrary angle in the XY plane. That is, if the XY positions of the centers of the couplers 43 and 53 match, most of the coupler 43 overlaps with most of the coupler 53 at all 360 ° rotation angles. As a result, the coupler 43 and the coupler 53 are electrically coupled. When the total length (circumferential length) of the couplers 43 and 53 is 10 mm, the band of the couplers 43 and 53 is 4.5 GH, and a digital signal can be transferred at 6 Gbps.

In the first embodiment, a plurality of couplers 43 or couplers 53 shown in FIG. 1 are formed on the substrate. The arrangement of the coupler will be described with reference to FIG. FIG. 2 is an XY plan view showing the configuration of electronic circuits 100 and 110 having a plurality of couplers. The electronic circuit 100 and the electronic circuit 110 become a communication circuit for communicating data by electromagnetic field coupling by a coupler.

The electronic circuit 100 includes a substrate 101, a port 102, and 16 couplers 43-1 to 43-16. The couplers 43-1 to 43-16 correspond to the couplers 43 shown in FIG. 1, respectively, and are collectively referred to as the couplers 43 unless otherwise specified. Similarly, the electronic circuit 110 includes a substrate 111, ports 112, and 16 couplers 53-1 to 53-16. The couplers 53-1 to 53-16 correspond to the coupler 53 in FIG. 1, and are collectively referred to as the coupler 53 unless otherwise specified.

In the electronic circuit 100 and the electronic circuit 110, the arrangement of the 16 couplers is the same, and only the angle of the substrate is different. That is, the coupler 43 of the electronic circuit 100 and the coupler 53 of the electronic circuit 110 are arranged in the same layout, but the angles of the substrate 101 and the substrate 111 are different. Compared to the substrate 101, the substrate 111 is rotated 45 ° clockwise. The angle of the substrate 101 is 0 °, and the angle of the substrate 111 is 45 °.

Since the electronic circuit 110 and the electronic circuit 100 have the same configuration, the configuration of the electronic circuit 100 will be mainly described in the following description. The substrate 101 has a regular octagonal shape. The couplers 43-1 to 43-16 are arranged on the substrate 101 at intervals so as not to interfere with each other. For example, the couplers 43-1 are spaced apart so that the crosstalk from the other couplers 43-2 to 43-16 is sufficiently small. Couplers 43-1 to 43-16 do not overlap with each other.

A port 102 is provided at one end of the substrate 101. Here, the port 102 is provided at the end on the −Y side, that is, on one side of a regular octagon parallel to the X direction. The port 102 is a wiring port from which the input / output wiring 103 connected to the couplers 43-1 to 43-16 is drawn out. That is, a plurality of input / output wirings 103 connected to the couplers 43-1 to 43-16 are collectively drawn out from the port 102. The input / output wiring 103 is connected to the couplers 43-1 to 43-16 via wiring (not shown) formed on the substrate 101.

The couplers 43-1 to 43-8 are arranged on the circumference of the circle C1 at predetermined intervals. The eight couplers 43-1 to 43-8 are arranged point-symmetrically with respect to the center O1 of the circle C1. For example, the coupler 43-1 and the coupler 43-5 are arranged point-symmetrically with respect to the center O1. Eight couplers 43-1 to 43-8 are arranged at equal intervals in the circumferential direction of the circle C1. That is, the eight couplers 43-1 to 43-8 are arranged at intervals of 45 ° (= 360 ° / 8) on the circumference of the circle C1. The couplers 43-1 to 43-8 are located equidistant from the center O1. The couplers 43-1 to 43-8 are all arcs of the same size. Therefore, the layout of the couplers 43-1 to 43-8 is rotationally symmetric 8 times with respect to the center O1.

The couplers 43-9 to 43-16 are arranged on the circumference of the circle C2 at predetermined intervals. The circle C2 and the circle C1 are concentric circles. The diameter of the circle C2 is larger than the diameter of the circle C1. The eight couplers 43-9 to 43-16 are arranged point-symmetrically with respect to the center O1 of the circle C2. For example, the coupler 43-9 and the coupler 43-13 are arranged point-symmetrically with respect to the center O1. Eight couplers 43-9 to 43-16 are arranged at equal intervals in the circumferential direction of the circle C2. That is, the eight couplers 43-9 to 43-16 are arranged at intervals of 45 ° (= 360/8) on the circumference of the circle C2. Couplers 43-9 to 43-16 are located equidistant from the center O1. The couplers 43-9 to 43-16 are all arcs of the same size. Therefore, the layout of the couplers 43-9 to 43-16 is rotationally symmetric eight times with respect to the center O1. The couplers 43-1 to 43-16 are arranged with rotational symmetry eight times with respect to the center O1.

As described above, the electronic circuit 110 has the same configuration as the electronic circuit 100. The substrate 111 and the port 112 correspond to the substrate 101 and the port 112 of the electronic circuit 100. The input / output wiring 113 is connected to the port 112.

The couplers 53-1 to 53-16 have the same layout as the couplers 43-1 to 43-16. However, in FIG. 2, the angle of the substrate 111 is rotated by 45 °. That is, the position of the port 102 and the position of the port 112 are different. That is, the port 112 is arranged on the side of the regular octagonal substrate 111 next to the side on the −Y side. Therefore, the take-out directions of the input / output wiring 103 and the input / output wiring 113 are different by 45 °.

Eight couplers 53-1 to 53-8 are arranged at intervals on the circumference of the circle C3. The couplers 53-1 to 53-8 are arranged point-symmetrically with respect to the center O2. In the circumferential direction of the circle C3, eight couplers 53-1 to 53-8 are arranged at equal intervals of 45 °. Therefore, the layout of the couplers 53-1 to 53-8 is rotationally symmetric eight times with respect to the center O2.

Eight couplers 53-9 to 53-16 are arranged on the circumference of the circle C4. Couplers 53-9 to 53-16 are arranged point-symmetrically. In the circumferential direction of the circle C4, eight couplers 53-9 to 53-16 are arranged at equal intervals of 45 °. Therefore, the layout of the couplers 53-9 to 53-16 is rotationally symmetric eight times with respect to the center O2. The circle C3 and the circle C4 are concentric circles. The couplers 53-1 to 53-16 are arranged with rotational symmetry eight times with respect to the center O2. The diameter of the circle C4 is larger than the diameter of the circle C3. The diameters of the circles C3 and C1 are the same, and the diameters of the circles C4 and C2 are the same.

Further, the substrate 101 and the substrate 111 are regular octagons having the same size. The center of the substrate 101 coincides with the center O1 of the circle C1. The center of the substrate 111 coincides with the center O2 of the circle C3. The centers of the substrate 101 and the substrate 111 do not have to coincide with the centers O1 and O2 of the circles C1 and C3. The couplers 43-1 to 43-16 and the couplers 53-1 to 53-16 all have arcs of the same size.

The substrate 101 and the substrate 111 are laminated so that the center O1 and the center O2 coincide with each other. When the substrate 101 and the substrate 111 are laminated, the 16 couplers 43-1 to 43-16 and the 16 couplers 53-1 to 53-16 overlap each other in the XY plan view. Specifically, the coupler 43-1 and the coupler 53-8 overlap, and the coupler 4-3 and the coupler 53-1 overlap. Similarly, the couplers 43-3 to 43-8 overlap with the couplers 53-2 to 53-7, respectively. Further, the coupler 43-9 and the coupler 53-16 overlap, and the coupler 43-10 and the coupler 53-9 overlap. Couplers 43-11 to 43-16 overlap with couplers 53-10 to 53-15, respectively. Even if the angles of the substrate 101 and the substrate 111 are different by 45 °, one of the couplers 43-1 to 43-16 is paired with one of the couplers 53-1 to 53-16 and overlaps. 16 pairs of couplers can be electromagnetically coupled to form 16 communication paths.

As described above, eight couplers 43 and 53 are arranged point-symmetrically along the circumference. Therefore, even when the angle of the substrate 111 is (360 ° / 8) × n (n is an integer of 0 or more and less than 8), the couplers 43-1 to 43-16 are the couplers 53-, respectively. It overlaps with any of 1 to 53-16. That is, even if the rotation angle of the substrate 111 is 0 °, 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, or 315 °, 16 pairs of couplers can be electromagnetically coupled. In other words, the mounting angle between the substrate 101 and the substrate 111 can be any angle as long as it is a multiple of 45 °. The mounting angles of the substrate 101 and the substrate 111 are relative angles.

The mounting angle of the substrate 111 with respect to the substrate 101 can be changed every 45 °. All the couplers 43 of the electronic circuit 100 can be electrically coupled to the couplers 53 of the electronic circuit 110 of the communication partner. Therefore, data can be transmitted and received in parallel through 16 communication paths, and high-speed data communication becomes possible. Further, in the XY plan view, the wiring can be taken out in a state where the port 102 and the port 112 do not overlap. Even if the substrate 101 provided with the coupler 43 and the substrate 111 provided with the coupler 53 have the same configuration, the mounting angle can be changed. The configuration of this embodiment makes it possible to realize a high-speed and compact electronic circuit that can be connected in parallel by changing the mounting angle. Further, since the position of the port can be shifted, it is possible to contribute to the thinning of the communication circuit.

By doing so, the positions of the ports 102 and 112 are not limited, so that the degree of freedom in designing the non-contact type connector can be increased. For example, the electronic circuit 100 is mounted on the connector of the display, and the electronic circuit 110 is mounted on the connector of the setup box. It will be possible to change the take-out direction of the input / output wiring of the connector on the display side and the connector on the setup box side. For example, when the pull-out directions of the input / output wirings 103 and 113 are changed by 180 °, the input / output wiring is pulled out to the inside of the display and the connector on the setup box side is pulled out to the outside of the display in the connector on the display side. Become. Further, since it is a non-contact type connector, a crimping portion is not required, which can contribute to thinning.

Further, the electronic circuit 100 and the electronic circuit 110 can have the same layout. Therefore, an electronic circuit having the same design can be used. For example, there is no need to change the design between the connector for the display and the connector for the setup box. Therefore, since the parts can be shared, the manufacturing cost can be suppressed. Further, by arranging the couplers at equal intervals on the circumference, the spacing between the couplers can be widened. Therefore, it is not necessary to increase the size of the circle in order to reduce the interference between the couplers, so that the mounting area can be reduced.

Next, the azimuth angle at which the coupler 43 on the circle C1 and the coupler 43 on the circle C2 are arranged will be described. The azimuth is an angle with respect to the center O1. For example, the azimuth of the azimuth extending in the + Y direction from the center O1 is 0 °, and the azimuth of the azimuth extending in the + X direction from the center O1 is 90 °. The azimuth angles of the couplers 43-1 to 43-8 are 0 °, 45 °, 90 °, 135 °, 180 °, 225 °, 270 °, and 315 °, respectively. The azimuths of the couplers 43-9 to 43-16 are 22.5 °, 67.5 °, 112, 5 °, 157.5 °, 202.5 °, 247.5 ° and 292.5, respectively. ° is 337.5 °.

In the circumferential direction, the coupler 53 on the circle C2 is arranged between two adjacent couplers 43 on the circle C1. Further, in the circumferential direction, the coupler 53 on the circle C1 is arranged between two adjacent couplers 43 on the circle C2. That is, in the circumferential direction, the coupler 43 on the circle C1 and the coupler 53 on the circle C2 are arranged alternately. The azimuth of the coupler 43 on the circle C1 and the azimuth of the coupler 43 on the circle C2 are different. By doing so, the distance between the coupler 43 on the circle C1 and the coupler 43 on the circle C2 can be widened. The same applies to the azimuth angle of the coupler 53 of the electronic circuit 110.

On the other hand, for example, when the coupler 43 on the circle C1 and the coupler 43 on the circle C2 are arranged at the same azimuth angle, in order to widen the distance between the couplers 43, the diameters of the circles C1 and C2 are large. The difference needs to be large. Therefore, by adopting the configuration shown in FIG. 2, the distance between the couplers 43 can be widened without increasing the diameter of the circle C2. Therefore, the size of the electronic circuit 100 can be reduced.

Next, the extraction direction of the extraction transmission line 44 and the extraction transmission line 45 of the coupler 43 will be described. Drawer transmission lines 44, 45 provided in the couplers 43-1 to 43-16 are pulled out to the outside. The extraction transmission lines 44 and 45 are connected to the coupler 43 from the outer peripheral side of the substrate. Therefore, the extraction transmission lines 44 and 45 of the couplers 43-1 to 43-16 are arranged radially. The lead-out transmission line 44 and the lead-out transmission line 45 are pulled out from the coupler 43 to the outer peripheral side.

The extraction transmission lines 44 and 45 of the two couplers 43 arranged at point-symmetrical positions are extracted in parallel and opposite directions to each other. For example, in the couplers 43-1 and 43-5 arranged at point-symmetrical positions with respect to the center O1, the leader transmission lines 44-1 and 45-1 and the drawer transmission lines 44-5 and 45-5 are parallel and parallel. It is pulled out in the opposite direction. Specifically, the extraction transmission lines 44-1 and 45-1 are extracted from the coupler 43-1 in the + Y direction. The extraction transmission lines 44-1 and 45-1 of the coupler 43-5 are drawn from the coupler 43-5 in the −Y direction. The coupler 53 of the electronic circuit 110 is also provided with lead transmission lines 54 and 55 in the same direction.

Therefore, the drawer transmission lines 44 and 45 can bypass the outside of the circle. By doing so, the influence on the coupler can be reduced as compared with the case where the lead transmission line penetrates the inside of the circle.

In the above configuration, the coupler 43 is arranged along the two circles C1 and C2, but the coupler 43 may be arranged along three or more concentric circles. Alternatively, the coupler 43 may be arranged along only one circle C1.

Further, in the above configuration, eight couplers 43 are arranged on the circumference of one circle (circle C1 or circle C2), but the coupler 43 arranged on the circumference of one circle. The number is not limited to eight. That is, K couplers 43 (K is an integer of 2 or more) may be arranged rotationally symmetrically on the circle C1. For example, when K = 2, the mounting angle can be changed every 180 °, and when K = 4, the mounting angle can be changed every 90 °. That is, it can be changed every (360 ° / K). By setting K to a multiple of 4, the mounting angle can be changed every 90 °.

When the couplers 43 are arranged on the two circles C1 and C2, the number of couplers 43 on the circle C1 and the number of couplers on the circle C2 do not have to be the same. For example, the number of couplers 43 on the circle C1 can be four, and the number of couplers 43 on the circle C2 can be eight. When the number of couplers 43 on the smallest circle C1 is K, it is preferable that the number of couplers is an integral multiple of K on the circle C2 larger than the circle C1. That is, it is preferable to arrange (m × K) (m is an integer of 1 or more) couplers 43 on the circle C2.

Although the substrates 101 and 111 have a regular octagonal shape in FIG. 2, the shapes of the substrates 101 and 111 are not particularly limited. For example, the substrates 101 and 111 may be circular, square, rectangular, or the like. Furthermore, the shapes and sizes of the substrate 101 and the substrate 111 may be different.

In this way, the combination of the paired coupler 43 and the coupler 53 changes depending on the mounting angle of the substrate 101 and the substrate 111. If the mounting angle is unknown, the data may be transmitted in order from the couplers 43-1 to 43-16, and the receiver on the electronic circuit 110 side may restore the data. By performing such a preliminary communication test, the combination of the coupler 43 and the coupler 53 can be confirmed. Further, even if the data is inverted depending on the rotation angle, that is, 0 becomes 1 and 1 becomes 0, the presence or absence of inversion can be confirmed by a prior communication test.

Modification 1
In the first modification, the shape of the coupler is different. The configuration of the coupler used in the first modification will be described with reference to FIG. FIG. 3 is a conceptual perspective view showing the configuration of a coupler in an inter-module communication device. FIG. 3 shows the configuration of the coupler of the two modules 10a and 10b. The modules 10a and 10b have the same configuration, and for example, the module shown in FIG. 33 of Patent Document 1 can be used. Therefore, detailed description will be omitted.

The module 10a includes a substrate 11a, a signal line 12a, a resistor 17a, a semiconductor integrated circuit device 15a, a feedback signal line 24a, a lead transmission line 25a, and a lead transmission line 26a. A signal line 12a, a resistor 17a, a semiconductor integrated circuit device 15a, a feedback signal line 24a, and a lead transmission line 25a are formed on the substrate 11a.

The signal line 12a and the feedback signal line 24a are arranged in parallel. Here, the Y direction is shown as a direction parallel to the longitudinal direction of the signal line 12a and the feedback signal line 24a, and the X direction is shown as a direction parallel to the lateral direction (width direction). The signal line 12a and the feedback signal line 24a are formed linearly along the Y direction. The signal line 12a and the feedback signal line 24a are formed at regular intervals.

The signal line 12a and the feedback signal line 24a are matched and terminated using a resistor 17a. The signal line 12a is connected to the semiconductor integrated circuit device 15a via a lead transmission line 25a. The feedback signal line 14a is connected to the semiconductor integrated circuit device 15a via a lead transmission line 26a. The lead-out transmission line 25a and the lead-out transmission line 26a are arranged parallel to each other along the Y direction. The semiconductor integrated circuit device 15a includes a transmitter / receiver that processes and transmits / receives digital signals.

The configuration of the module 10b is the same as that of the module 10a. That is, the substrate 11b, the signal line 12b, the resistor 17b, the semiconductor integrated circuit device 15b, the feedback signal path 24b, the extraction transmission line 25b, and the extraction transmission line 26b are the substrate 11a, the signal line 12a, the resistor 17a, and the semiconductor integration, respectively. It corresponds to the circuit device 15a, the feedback signal path 24a, the extraction transmission line 25a, and the extraction transmission line 26a. Therefore, detailed description will be omitted.

In the XY plane, the signal line 12a and the signal line 12b overlap, and the feedback signal line 14a and the feedback signal line 14b overlap. Therefore, electromagnetic field coupling occurs at the overlapping portion between the signal line 12a and the signal line 12b and at the overlapping portion between the feedback signal line 14a and the feedback signal line 14b. The signal line 12b and the feedback signal line 14b serve as the coupler 63 of the module 10a, and the signal line 12b and the feedback signal line 14b serve as the coupler 64 of the module 10b. The coupler 63 is composed of a pair of linear signal lines (signal line 12a and feedback signal line 24a). The coupler 64 is composed of a pair of linear signal lines (signal line 12b and feedback signal line 24b).

It is preferable that the lead-out transmission line 25a and the lead-out transmission line 26a are not coupled to the lead-out transmission line 25b and the lead-out transmission line 26b, respectively. Therefore, the line widths of the lead-out transmission line 25a, the lead-out transmission line 26a, the lead-out transmission line 25b, and the lead-out transmission line 26b are made narrower than the line widths of the signal line 12a, the signal line 12b, the feedback signal path 24a, and the feedback signal path 24b. Is preferable. Alternatively, in the XY plane, different layouts may be used so that the lead-out transmission line 25a and the lead-out transmission line 26a do not overlap with the lead-out transmission line 25b and the lead-out transmission line 26b.

Next, the configurations of the electronic circuits 200 and 210 having a plurality of couplers will be described with reference to FIG. FIG. 4 is an XY plan view showing the configurations of the electronic circuits 200 and 210. In the electronic circuit 200, the arrangement of the board 201, the port 202, the input / output wiring 203, and the coupler 63 is the same as the arrangement of the board 101, the port 102, the input / output wiring 103, and the coupler 43 shown in FIG. ing. In the electronic circuit 210, the arrangement of the couplers 63 and 64 is the same as the arrangement of the couplers 43 and 53 in FIG. That is, the basic configuration other than the shape of the coupler is the same as in FIG. Therefore, the description of the content that overlaps with the content of the first embodiment will be omitted as appropriate.

Also in the first modification, eight couplers 63-1 to 63-8 are arranged at intervals on the circumference of the circle C1. Eight couplers 63-1 to 63-8 are arranged point-symmetrically with respect to the center O1 of the circle C1. Eight couplers 63-9 to 63-16 are arranged at intervals on the circumference of the circle C2. Eight couplers 63-9 to 63-16 are arranged point-symmetrically with respect to the center O1 of the circle C2.

Eight couplers 64-1 to 64-8 are arranged at intervals on the circumference of the circle C3. Eight couplers 64-1 to 64-8 are arranged point-symmetrically with respect to the center O2 of the circle C3. Eight couplers 64-9 to 64-16 are arranged at intervals on the circumference of the circle C4. Eight couplers 64-9 to 64-16 are arranged point-symmetrically with respect to the center O2 of the circle C4.

Further, the coupler 63 is composed of two parallel signal lines (the signal line 12a and the feedback signal line 14a in FIG. 3). In the present embodiment, the direction of the signal line of the couplers 63-1 to 63-8 is the radial direction of the circle C1. Similarly, the direction of the signal line of the couplers 63-9 to 63-16 is the radial direction of the circle C2. The longitudinal directions of the couplers 63-1 to 63-8 and the couplers 63-9 to 63-16 are parallel to the radial directions of the circles C1 and C2. That is, the signal lines of the couplers 63-1 to 63-16 are formed radially. For example, the signal line of the coupler 63-1 is formed parallel to the direction (−Y direction) from the coupler 63-1 toward the center O1. Therefore, the couplers 63-1 to 63-16 are arranged in rotational symmetry eight times with respect to the center O1.

Further, the directions of the two parallel signal lines (signal line 12b and feedback signal line 14b in FIG. 3) of the couplers 64-1 to 64-8 are set to the radial direction of the circle C3, and the couplers 64-9 to 64- The direction of the 16 signal lines is the radial direction of the circle C4. The longitudinal directions of the couplers 64-1 to 64-8 and the couplers 64-9 to 64-16 are parallel to the radial directions of the circles C3 and C4. That is, the signal lines of the couplers 64-1 to 64-16 are also formed radially. For example, the coupler 64-2 is formed in parallel with the direction from the coupler 64-2 toward the center O2 (−X direction). Therefore, the couplers 64-1 to 64-16 are arranged in rotational symmetry eight times with respect to the center O2.

By stacking the substrate 201 and the substrate 202 so that the center O1 and the center O2 coincide with each other, the couplers 63-1 to 63-16 and the couplers 64-1 to 64-16 are laminated as in the first embodiment. And overlap. As a result, 16 pairs of couplers are electromagnetically coupled. The couplers 63-1 to 63-16 are rotationally symmetric 8 times. Further, the couplers 64-1 to 64-16 are rotationally symmetric 8 times. Similar to the first embodiment, the rotation angle of the substrate 211 can be changed every 45 °. The longitudinal direction of the couplers 63 and 64 is not limited to the radial direction, and may be inclined by a certain angle from the radial direction.

Further, in the first embodiment, the positioning portion 65 is formed on the substrate 201, and the positioning portion 66 is formed on the substrate 211. The positioning portions 65 and 66 are arranged in the vicinity of each side of the regular octagonal substrates 201 and 211. That is, on the substrates 201 and 211, eight positioning portions 65 and 66 are provided at intervals of 45 °. The positioning unit 65 is arranged on the outer peripheral side of the couplers 63-1 to 63-16, and the positioning unit 66 is arranged on the outer peripheral side of the couplers 64-1 to 64-16.

The substrates 501 and 511 are detachably fixed by the positioning portions 65 and 66. For example, permanent magnets can be used as the positioning portions 65 and 66. Then, when the substrates 201 and 211 are laminated, the positioning portion 65 and the positioning portion 66 are arranged so as to face each other. The positioning unit 65 and the positioning unit 66 arranged to face each other are attracted by a magnetic force. By doing so, it is possible to prevent the mounting angle from shifting. For example, if the mounting angle deviates from 45 °, the overlapping area of the coupler 63 and the coupler 64 becomes small. Therefore, the capacitance formed by the couplers 63 and 64 decreases due to the deviation of the mounting angle.

Therefore, as shown in the present embodiment, by using the positioning units 65 and 66, it is possible to prevent the positional deviation between the couplers. That is, the attractive force of the magnets of the positioning portions 65 and 66 acts so that the mounting angle is 45 ° × n. As a result, the position accuracy can be improved, so that deterioration of the coupling performance of the couplers 63 and 64 can be prevented. Further, the positioning portions 65 and 66 are not limited to magnets. For example, the positioning portions 65, 66 may be formed by using a mechanical fitting structure. Of course, the number of positioning portions 65 and 66 is not limited to eight.

In this way, it is preferable to provide the positioning portions 65 and 66 on the substrates 201 and 211. The positioning portions 65 and 66 set the laminated substrates at a desired mounting angle. That is, the positioning portions 65 and 66 limit the misalignment so that the mounting angle between the substrates matches a multiple of 45 °.

In this embodiment, a plurality of couplers are arranged rotationally symmetrically on the circumference. By doing so, even when the linear couplers 63 and 64 are used, the mounting angle between the substrates can be changed in 90 ° increments. For example, when linear couplers 63 and 64 are arranged in an array of 3 rows and 3 columns as in Patent Document 4, the longitudinal direction of the couplers is rotated by 90 °, which makes it difficult to couple them. On the other hand, in the present embodiment, the couplers 63 and 64 can be overlapped even when rotated by 90 ° or 45 °.

Similar to the first embodiment, the extraction transmission line 25a and the extraction transmission line 26a are drawn out from the coupler 63 to the outer peripheral side of the circles C1 and C2. The drawer transmission line 25a and the drawer transmission line 26a are formed radially. Therefore, the drawer transmission line 25a and the drawer transmission line 26a can bypass the outside of the circles C1 and C2. By doing so, the influence on the coupler 43 can be reduced as compared with the case where the drawer transmission line 25a and the drawer transmission line 26a penetrate the inside of the circle C1.

Modification 2
In the second modification, the shape of the coupler is different from that of the first and first embodiments. FIG. 5 is a diagram showing a configuration of a coupler according to the second modification. FIG. 5 shows the planar configuration of the couplers of the two modules 10a and 10b. The modules 10a and 10b have the same configuration, and for example, the module shown in FIG. 2 of Patent Document 2 can be used.

The module 10a includes a first substrate 11a, a signal line 12a, and an extraction transmission line 13a, 14a. A signal line 12a and lead transmission lines 13a and 14a are formed on the first substrate 11a. The signal line 12a is a rectangular pattern with the X direction as the longitudinal direction and the Y direction as the lateral direction. That is, the signal line 12a is formed by a signal line along the X direction. A leader transmission line 13a is connected to one end of the signal line 12a in the X direction, and a drawer transmission line 14a is connected to the other end. A positive electrode differential signal is input to the extraction transmission line 13a, and a negative electrode differential signal is input to the extraction transmission line 14a. The line width of the signal line 12a is wider than the line width of the lead transmission lines 13a and 14a.

The module 10b includes a second substrate 11b, a signal line 12b, and an extraction transmission line 13b, 14b. The module 10b has the same configuration as the module 10a. The signal line 12b and the signal line 12b have almost the same size. In the XY plan view, the first substrate 11a and the second substrate 11b are laminated so that the signal line 12a and the signal line 12b overlap. Therefore, the signal line 12a and the signal line 12b are electromagnetically coupled.

FIG. 6 is a plan view showing the arrangement of the coupler shown in FIG. In FIG. 6, the signal line 12a is shown as the coupler 73, and the signal line 12b is shown as the coupler 74 in a simplified manner. FIG. 6 shows an electronic circuit 300 with 16 couplers 73 and an electronic circuit 310 with 16 couplers 74. Further, in FIG. 6, the board, the port, and the like are omitted.

Similar to the first and second modifications, the couplers 73-1 to 73-8 are arranged on the circumference of the circle C1. The couplers 73-1 to 73-8 are arranged point-symmetrically with respect to the center O1 of the circle C1. Further, the couplers 73-9 to 73-16 are arranged on the circumference of the circle C2 and point-symmetrically with respect to the center O1 of the circle C2. Couplers 74-1 to 74-8 are arranged on the circumference of circle C3. The couplers 74-1 to 74-8 are arranged point-symmetrically with respect to the center O2 of the circle C3. Further, the couplers 74-9 to 74-16 are arranged on the circumference of the circle C4 and point-symmetrically with respect to the center O2 of the circle C4.

Further, the longitudinal directions of the couplers 73-1 to 73-8 and the couplers 73-9 to 73-16 are parallel to the tangential directions of the circles C1 and C2. Therefore, the couplers 73-1 to 73-16 are rotationally symmetric 8 times with respect to the center O2. The longitudinal directions of the couplers 74-1 to 74-8 and the couplers 74-9 to 74-16 are parallel to the tangential directions of the circles C3 and C4. Therefore, the couplers 74-1 to 74-16 are rotationally symmetric 8 times with respect to the center O2.

By stacking the electronic circuit 300 and the electronic circuit 310 so that the center O1 and the center O2 coincide with each other, the couplers 73-1 to 73-16 and the couplers are combined in the same manner as in the first embodiment and the first modification. 74-1 to 74-16 overlap. As a result, 16 pairs of couplers are electromagnetically coupled. Similar to the first embodiment, the rotation angle of the substrate can be changed every 45 °.

Further, similarly to the extraction transmission line 44 and the extraction transmission line 45 of the first embodiment, the extraction transmission line 13a and the extraction transmission line 14a are extracted from the coupler 73 to the outside. The drawer transmission line 13a and the drawer transmission line 14a of the 16 couplers 43 are formed radially. Therefore, the drawer transmission line 13a and the drawer transmission line 14a can bypass the outside of the circles C1 and C2. By doing so, the influence on the coupler can be reduced as compared with the case where the drawer transmission line 13a and the drawer transmission line 14a penetrate the inside of the circle.

Modification 3
The electronic circuit according to the third modification will be described with reference to FIG. 7. FIG. 7 is a plan view showing the arrangement of the couplers of the electronic circuits 400 and 410 according to the third modification. Although the couplers 63 and 64 shown in FIG. 3 are used, the coupler shown in FIG. 1 or 5 may be used. Since the basic configurations of the electronic circuits 400 and 410 are the same as those of the first embodiment and the first and second modifications, the description thereof will be omitted as appropriate. In FIG. 7, the input / output wiring is omitted.

16 couplers 63-1 to 63-16 are arranged on the substrate 401 of the electronic circuit 400, and 16 couplers 64-1 to 64-16 are arranged on the substrate 411 of the electronic circuit 410. ing. However, in the modified example 3, the arrangement of the 16 couplers 63 and 64 is different from the arrangement of the modified example 1. Specifically, 16 couplers 63-1 to 63-16 are arranged on the circumference of the circle C1. 16 couplers 64-1 to 64-16 are arranged on the circumference of the circle C3.

The couplers 63-1 to 63-16 are arranged point-symmetrically with respect to the center O1 of the circle C1. Along the circumferential direction of the circle C1, 16 couplers 63-1 to 63-16 are arranged at equal intervals of 22.5 °. The couplers 63-1 to 63-16 are arranged 16 times rotationally symmetric with respect to the center O1.

The couplers 64-1 to 64-16 are arranged point-symmetrically with respect to the center O2 of the circle C3. Along the circumferential direction of the circle C3, 16 couplers 64-1 to 64-16 are arranged at equal intervals of 22.5 °. The couplers 64-1 to 64-16 are arranged 16 times rotationally symmetric with respect to the center O2.

By stacking the electronic circuit 400 and the electronic circuit 410 so that the center O1 and the center O2 coincide with each other, the couplers 63-1 to 63-16 and the couplers 64-1 to 64- It overlaps with 16. For example, the coupler 63-1 and the coupler 64-16 overlap. As a result, 16 pairs of couplers are electromagnetically coupled.

In the third modification, the mounting angle between the substrate 401 and the substrate 411 can be changed every 22.5 ° (= 360 ° / 16). Therefore, in FIG. 7, the angles of the port 402 and the port 412 are different by 22.5 °. Although the substrates 401 and 411 have a regular hexadecagon in FIG. 7, they may have other shapes such as a circle. Further, also in the modification example 3, the coupler may be arranged on the circumferences of the circles C2 and C4. That is, the coupler may be arranged on the circumference of two or more concentric circles.

Modification 4
The electronic circuit according to the modified example 4 will be described with reference to FIG. It is a top view which shows the electronic circuits 400, 420 which concerns on modification 4. FIG. In the electronic circuit 400, 16 couplers 63 are arranged at equal intervals on the circumference of the circle C1 as in FIG. 7.

On the other hand, the electronic circuit 420 is provided with only four couplers 64. The number of couplers 63 of the electronic circuit 400 and the number of couplers 64 of the electronic circuit 420 are different. Specifically, four couplers 64-1 to 64-4 are arranged on the circumference of circle C3. Couplers 64-1 to 64-4 are arranged point-symmetrically with respect to the center O2. Here, the couplers 64-1 to 64-4 are arranged at equal intervals of 90 °.

Even in this case, the mounting angle of the substrate 421 with respect to the substrate 401 can be changed every 22.5 °. For example, the four couplers 64-1 to 64-4 will overlap with any of the couplers 63-1 to 63-16. In this case, on the substrate 401, 4 of the 16 couplers 63 are coupled to the coupler 64. Since the couplers 64-1 to 64-4 are electromagnetically coupled, four parallel communication paths are formed. For example, one of the couplers 63-1 to 63-4 couples with the coupler 64.

For example, when the coupler 64-1 and the coupler 63-1 are arranged so as to overlap, the couplers 64-2 to 64-4 overlap with the couplers 63-5, 63-9, and 63-13, respectively. When the substrate 421 is rotated by 22.5 ° and the couplers 64-1 and 63-2 are arranged so as to overlap each other, the couplers 64-2 to 64-4 are the couplers 63-6 and 63-10. , 63-14. By doing so, four parallel communication paths are formed.

In the electronic circuit 400, only four couplers 63 are coupled to the coupler 64. That is, the remaining 12 couplers 63 are not coupled to the coupler 64. Therefore, the receiving circuit and the transmitting circuit can be shared for each of the four couplers 63. For example, four couplers 63-1 to 63-4 are connected in parallel to one transmitter / receiver circuit, and a switch is arranged between the couplers 63-1 to 63-4 and the transmitter / receiver circuit. , The switch is turned on and off according to the mounting angles of the electronic circuits 400 and 410. Of the four couplers 63-1 to 63-4, only one coupler 63-1 that overlaps with the coupler 64-1 is connected to the transmitter / receiver circuit. Therefore, the number of transmission / reception circuits can be reduced, and the electronic circuit 420 can be miniaturized. In addition, four couplers coupled with the coupler 64 may be identified by a prior communication test.

In the electronic circuit 420, the four couplers 64-1 to 64-4 were arranged symmetrically, but in the electronic circuit 420 in which the number of couplers is small, the couplers 64-1 to 64-4 are symmetrically arranged. It does not have to be arranged. For example, couplers 64-1 to 64-4 can be arranged at 22.5 ° intervals. In this case, assuming that the mounting angle is 0 °, the couplers 64-1 to 64-4 are arranged at positions overlapping the couplers 63-1 to 63-4. When the mounting angle is changed to 22.5 °, the couplers 64-1 to 64-4 overlap with the couplers 63-2 to 63-5. In the electronic circuit 420, the couplers 64 may not be arranged at equal intervals along the circumference. That is, the couplers 64-1 to 64-4 may be randomly arranged as long as they are arranged at an azimuth angle of 22.5 ° × n (n is an arbitrary integer of 0 or more and less than 16). For example, the couplers 64-1 to 64-4 may be randomly arranged so as to overlap the couplers 63-1, 63-2, 63-4, 63-13.

The above configuration can be generalized as follows. In the electronic circuit 400, the substrate 401 is provided with K (K is an integer of 2 or more) couplers 63, and in the electronic circuit 420, the substrate 421 is provided with L (L is an integer of 2 or more and K or less) of couplers 64. Is provided. For example, K couplers 63 are arranged at equal intervals along the circumference of the circle C1. Then, in the electronic circuit 420, L couplers 64 are arranged on a circle C3 having the same size as the circle C1. By stacking the substrate 401 and the substrate 421 so that the L couplers 63 and the L couplers 64 overlap, L parallel communication paths are formed.

2, FIG. 4, and FIG. 6 show the configuration of K = L = 8. FIG. 7 shows the configuration of K = L = 16. FIG. 8 shows the configuration of K = 16 and L = 4. Further, by setting K to a multiple of 4, the mounting angle can be changed every 90 °. L may be an integer of 2 or more and K or less. For example, in the configuration shown in FIG. 7, in the electronic circuit 410, even if one or more couplers of the couplers 64-1 to 64-16 are thinned out, the mounting angle of the substrate can be changed every 22.5 °. Of course, in the configurations of FIGS. 2, 4 and 6, the coupler 53, the coupler 64 and the coupler 74 may be thinned out.

If the coupler 63 on the substrate 401 is arranged rotationally symmetric N times, the coupler 64 on the substrate 421 may not be arranged rotationally symmetric. When K is greater than L, every 360 ° / N if L couplers 64 are arranged at an azimuth of 360 ° x n / N (n is any integer greater than or equal to 0 and less than N). The mounting angle can be changed. In the method of connecting electronic circuits according to the present embodiment, L couplers 64 (L is an integer of 2 or more and K or less) and a coupler 63 overlap to form L communication paths. The first substrate and the second substrate are laminated so that the mounting angle between the electronic circuit 400 and the electronic circuit 420 is 360 ° × n / N (n is an arbitrary integer of 0 or more and less than N).

Modification 5
The electronic circuit according to the modified example 5 will be described with reference to FIG. FIG. 9 is a plan view showing the arrangement of the coupler 64 in the electronic circuit 440. In the electronic circuit 440, similarly to the electronic circuit 420, four couplers 64 are provided on the circumference of the circle C1. In FIG. 9, the substrate 441 is a square, and a port 442 is provided on one side thereof.

In the modified example 5, the extraction directions of the extraction transmission lines 25b and 26b are different. Drawer transmission lines 25b and 26b are pulled out from the coupler 64 toward the inside of the circle C3. Here, the extraction transmission lines 25b and 26b are drawn toward the center O2 side of the circle C3 and then bent in the direction of the port 442. When pulled out to the inside of the circle C3, it is easier to wire the same length than to bypass the outside of the circle C3. The configuration of the modified example 5 is particularly effective when the number of couplers 64 arranged on the circumference is small.

Embodiment 2.
In this embodiment, K couplers (K is an integer of 2 or more) are arranged along the sides of a regular N-sided polygon. Further, K couplers are arranged rotationally symmetric with respect to the center of the regular N-sided polygon. The arrangement of the coupler in the electronic circuit according to the second embodiment will be described with reference to FIG. FIG. 10 is a plan view showing the arrangement of the couplers 43 and 53 in the electronic circuits 500 and 510. The couplers 43 and 53 have an arc shape as shown in FIG.

The electronic circuit 500 includes a substrate 501, a port 502, an input / output wiring 503, and 16 couplers 43. The 16 couplers 43 are arranged at equal intervals in an array of 4 columns and 4 rows. The couplers 43-1 to 43-16 are arranged at intervals so as not to interfere with each other.

The coupler 43 is arranged along the sides of the two squares S1 and S2. The square S2 is larger than the square S1, and the center of the square S2 coincides with the center O1 of the square S1. Four couplers 43 are arranged on the four sides of the regular quadrangle S1. Specifically, couplers 43-6, 43-7, 43-10, and 43-11 are arranged at the ends of the four sides of the regular quadrangle S1, that is, at each vertex. The couplers 43-6, 43-7, 43-10, 43-11 are arranged rotationally symmetric four times with respect to the center O1 of the square S1.

Further, 12 couplers 43-1 to 43-5, 43-8, 43-9, 43-12 to 43-16 are arranged on the four sides of the regular quadrangle S2. Four couplers 43 are arranged on one side of the regular quadrangle S2. Specifically, couplers 43-1, 43-4, 43-13, and 43-16 are arranged at each vertex of the regular quadrangle S2, respectively. Two couplers 43-2 and 43-3 are arranged between the coupler 43-1 and the coupler 43-4 on the side parallel to the X direction on the + Y side. Similarly, on the side parallel to the X direction on the −Y side, two couplers 43-14 and 43-15 are arranged between the coupler 43-13 and the coupler 43-16. Further, on the side parallel to the Y direction on the −X side, two couplers 43-5 and 43-9 are arranged between the coupler 43-1 and the coupler 43-13. On the side parallel to the Y direction on the + X side, two couplers 43-8 and 43-12 are arranged between the coupler 43-4 and the coupler 43-16. Therefore, the couplers 43-1 to 43-5, 43-8, 43-9, 43-12 to 43-16 are arranged rotationally symmetric four times with respect to the center O1 of the square S2.

The center of the square S1 and the center of the square S2 coincide with each other at the center O1. Therefore, the couplers 43-1 to 43-16 are arranged symmetrically four times. Although the substrate 501 has a regular quadrangle (square), it may have a shape other than the regular quadrangle. Here, the center of the regular quadrangular substrate 501 coincides with the center O1, but it does not have to coincide. A port 502 is provided on the side of the substrate 501 parallel to the X direction on the −Y side. The input / output wiring 503 connected to the coupler 43 is bundled in the port 502.

The electronic circuit 510 includes a substrate 511, a port 512, an input / output wiring 513, and 16 couplers 53. Therefore, four couplers 53-6, 53-7, 53-10, 53-11 are arranged on the sides of the square S3. Further, eight couplers 53-1 to 53-5, 53-8, 53-9 and 53-12 to 53-16 are arranged on the sides of the square S4. The center of the square S3 and the center of the square S4 coincide with each other at the center O2.

Since the configuration of the electronic circuit 510 is the same as the configuration of the electronic circuit 500, detailed description thereof will be omitted. Therefore, the couplers 53-1 to 53-16 are arranged rotationally symmetric four times with respect to the center O2. In FIG. 10, since the substrate 511 is rotated by 90 °, the port 512 is provided on the side of the substrate 511 parallel to the Y direction on the −X side.

With such a configuration, the mounting angle of the electronic circuits 500 and 510 can be changed every 90 °. When the substrate 501 and the substrate 511 are laminated so that the center O1 and the center O2 coincide with each other, if the angles of the substrate 511 with respect to the substrate 501 are 0 °, 90 °, 180 °, and 270 °, 16 couplers are used. 43 and 16 couplers 53 overlap. As a result, 16 communication paths can be formed.

For example, when the substrate 510 is rotated by 90 °, the center O31 of the coupler 43-1 shown in FIG. 11 and the center O32 of the coupler 53-13 coincide with each other. As a result, the coupler 43-1 and the coupler 43-13 overlap in most parts, so that the coupler 43-1 and the coupler 53-13 are electromagnetically coupled. The other coupler 43 is similarly coupled with the coupler 53. Even when the rotation angle of the substrate 511 with respect to the substrate 501 is 90 °, 16 parallel communication paths are formed.

FIG. 12 shows the arrangement of the coupler 53 when the rotation angles of the substrate 511 are 0 °, 90 °, 180 °, and 270 ° in the clockwise direction. In FIG. 12, for simplification of the description, only the four couplers 53-1, 53-4, 53-13, and 53-16 at the corners of the square S4 are coded. Since the coupler 53 has an arc shape, it is arranged at the same position even when the angle is changed. Only the direction of the lead transmission line changes by 90 °.

Even when the substrate 511 is rotated to 0 °, 90 °, 180 °, and 270 °, the mounting angle can be changed every 90 ° because all 16 couplers 53 overlap with the coupler 43. .. Data communication can be performed in parallel using 16 communication paths. This enables high-speed data communication.

The combination of the paired coupler 43 and the coupler 53 changes depending on the mounting angle of the substrate 501 and the substrate 511. When the mounting angle is unknown, the data may be transmitted in order from the couplers 43-1 to 43-15, and the receiver on the electronic circuit 510 side may restore the data. By performing such a preliminary communication test, the combination of the coupler 43 and the coupler 53 can be confirmed. Further, even if the data is inverted depending on the rotation angle, that is, 0 becomes 1 and 1 becomes 0, the presence or absence of inversion can be confirmed by a prior communication test.

Further, in the present embodiment, as shown in FIG. 10, positioning portions 65 and 66 are provided near the center of each side of the substrates 501 and 511, respectively. The positioning portion 65 is a magnet or a fitting structure. Therefore, the substrates 501 and 511 are detachably fixed by the positioning portions 65 and 66. By providing the positioning portion 65, it is possible to prevent misalignment and prevent deterioration of coupling performance.

In FIG. 10, in the 16 couplers 43, the drawer transmission line 44 and the drawer transmission line 45 are all pulled out from the coupler 43 in the same direction, but they may be pulled out in different directions.

Further, it is preferable to arrange a plurality of couplers at equal intervals along the sides of the regular quadrangle. By doing so, the substrate can be miniaturized even when the couplers next to each other are arranged at intervals that do not interfere with each other. In the present embodiment, the coupler is arranged on the side of the double regular quadrangle, but the coupler may be arranged on the side of the triple or more regular quadrangle. Alternatively, the coupler may be placed on the side of only one square.

Modification 6
The electronic circuit 600 according to the modification 6 will be described with reference to FIG. FIG. 13 is a plan view showing the arrangement of the coupler 43 in the electronic circuit 600. In FIG. 13, the board, the port, and the like are omitted.

The electronic circuit 600 includes four coupler groups 431-434. The coupler groups 431, 432, 433, and 434 each include 16 couplers 43. That is, the electronic circuit 600 has 64 couplers 43. As shown in FIG. 1, the coupler 43 has an arc shape.

The 16 couplers 16 included in the coupler group 431 have the same arrangement as the couplers 43-1 to 43-16 shown in FIG. Therefore, the 16 couplers 43 included in the coupler group 431 are rotationally symmetric four times with respect to the center O11. Similarly, the 16 couplers 16 included in each of the coupler groups 432-434 have the same arrangement as the couplers 43-1 to 43-16 shown in FIG. The 16 couplers 43 included in the coupler group 432 are rotationally symmetric four times with respect to the center O12. The 16 couplers 43 included in the coupler group 433 are rotationally symmetric four times with respect to the center O13. The 16 couplers 43 included in the coupler group 434 are rotationally symmetric four times with respect to the center O14.

Further, the coupler groups 431 to 434 are arranged rotationally symmetricly four times with respect to the center O21. For example, the center O21 is the center of the square S5 connecting the centers O11, O12, O13, and O14. That is, the centers O11, O12, O13, and O14 are arranged at each vertex of the regular quadrangle S5. With such an arrangement, the 64 couplers 43 are arranged rotationally symmetrically four times with respect to the center O21. Therefore, the mounting angle can be changed every 90 °. By stacking the electronic circuits in which the coupler 43 is arranged as shown in FIG. 12, 64 parallel communication paths are formed. Therefore, higher-speed data communication is possible in a communication circuit in which substrates are laminated.

The modification 6 can also be applied to the configuration of the first embodiment. In this case, a plurality of couplers shown in the first embodiment or modifications 1 to 5 thereof are used as a coupler group. Then, the centers of the plurality of couplers are arranged at the vertices of the regular polygon. For example, by arranging a group of couplers at the vertices of a regular quadrangle, the mounting angle can be changed every 90 °.

Modification 7
The electronic circuit 700 according to the modified example 7 will be described with reference to FIG. FIG. 14 is a plan view showing the arrangement of the couplers 43 and 53 in the electronic circuits 700 and 710. In FIG. 14, the board, the port, and the like are omitted.

The electronic circuit 700 includes 15 couplers 43-1 to 43-15. Couplers 43-1 to 43-15 are spaced apart so that they do not interfere with each other. The electronic circuit 710 includes 15 couplers 53-1 to 53-15. Couplers 53-1 to 53-15 are spaced apart so that they do not interfere with each other. The couplers 43-1 to 43-15 and the couplers 53-1 to 53-15 have an arc shape as shown in FIG. 1, respectively.

Couplers 43-1 to 43-6 are arranged on the sides of the equilateral triangle T1. Couplers 43-1, 43-3, and 43-5 are arranged at the vertices of the equilateral triangle T1, respectively. Further, on one side of the equilateral triangle T1, a coupler 4-3 is arranged between the coupler 43-1 and the coupler 43-3. Further, on one side of the equilateral triangle T1, a coupler 43-4 is arranged between the coupler 43-3 and the coupler 43-5. On one side of the equilateral triangle T1, a coupler 43-5 is arranged between the coupler 43-5 and the coupler 43-1. Therefore, the couplers 43-1 to 43-6 are arranged three times rotationally symmetric with respect to the center O1 of the equilateral triangle T2.

Couplers 43-7 to 43-15 are arranged on the sides of the equilateral triangle T2. Couplers 43-7, 43-10, and 43-13 are arranged at the vertices of the equilateral triangle T2, respectively. Further, on one side of the equilateral triangle T2, couplers 43-8 and 43-9 are arranged between the coupler 43-7 and the coupler 43-10. Further, on one side of the equilateral triangle T2, the couplers 43-11 and 43-12 are arranged between the couplers 43-10 and the couplers 43-13. On one side of the equilateral triangle T2, couplers 43-14 and 43-15 are arranged between the coupler 43-13 and the coupler 43-7. Therefore, the couplers 43-7 to 43-15 are arranged three times rotationally symmetric with respect to the center O1 of the equilateral triangle T2.

Further, the center of the equilateral triangle T1 and the center of the equilateral triangle T2 coincide with each other at the center O1. Therefore, 15 couplers 43-1 to 43-15 are arranged symmetrically three times.

Since the configuration of the electronic circuit 710 is the same as the configuration of the electronic circuit 700, detailed description thereof will be omitted. Therefore, the couplers 53-1 to 53-15 are arranged symmetrically three times with respect to the center O2. In FIG. 14, the substrate 511 is rotated by 120 °. Therefore, the coupler 43-1 and the coupler 53-1 overlap.

With such a configuration, the mounting angles of the electronic circuits 700 and 710 can be changed every 120 °. When the electronic circuit 700 and the electronic circuit 710 are laminated so that the center O1 and the center O2 coincide with each other, if the rotation angles are 0 °, 120 °, and 240 °, 15 couplers 43 and 15 couplings are performed. It overlaps with the vessel 53. As a result, 15 communication paths can be formed.

In the second embodiment and the modified examples 6 and 7, the couplers are arranged symmetrically three times or four times, but it is also possible to arrange them rotationally symmetricly five times or more. For example, by arranging the couplers 43 and 53 along the sides of the regular pentagon, the rotational symmetry can be set to 5 times. Alternatively, by arranging the couplers 43 and 53 on the sides of the regular hexagon, the rotational symmetry can be achieved 6 times.
Generalized to a regular polygon, it can be expressed as follows. K (K is an integer of N or more) couplers are arranged along the sides of a regular N polygon (N is an integer of 3 or more), and K couplers are arranged with respect to the center of the regular N polygon. It suffices if they are arranged in rotational symmetry N times. By doing so, the mounting angle can be changed every (360 ° / N).

Further, the regular N-sided polygon may be double or more. That is, a plurality of couplers are arranged along the sides of regular N-sided polygons having the same center but different sizes. Then, a plurality of couplers may be arranged in rotational symmetry N times. By doing so, more communication paths can be formed.

In addition, the first embodiment, the second embodiment, and the first to seventh modifications can be used in combination as appropriate. Further, the coupler 43 may be arranged on the first regular quadrangle S1, and the other couplers may be arranged on the circumference of a circle larger than the first regular quadrangle. Alternatively, the coupler 43 may be placed on the first circle C1 and the other couplers may be placed on the sides of a square that is larger than the first circle C1.

Also in the second embodiment and the modified examples 6 and 7, the number of couplers of the two substrates may be different as in the modified example 4. For example, in the electronic circuit 510 shown in FIG. 10, one or more of the couplers 53-1 to 53-16 may not be present. Further, even in an electronic circuit having a configuration in which the positioning portions 65 and 66 are not shown, the positioning portions 65 and 66 can be formed by appropriately providing a magnet on the substrate.

The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the spirit.

This application claims priority on the basis of Japanese application Japanese Patent Application No. 2018-153638 filed on August 17, 2018, the entire disclosure of which is incorporated herein by reference.

41 Coupler element 43 Coupler 44 Drawer transmission line 45 Drawer transmission line 47 Board surface 51 Coupler element 53 Coupler 54 Drawer transmission line 55 Drawer transmission line 57 Board surface 63 Coupler 64 Coupler 65 Positioning part 66 Positioning part 73 Coupling Device 74 Coupler 100, 110, 200, 210, 300, 310, 400, 410 Electronic circuit 101, 111, 201, 211, 401, 411 Board 102, 112, 202, 212, 402, 412 Port 103, 113, 203 213 Input / output wiring

Claims (16)

The first board and
An electronic circuit board formed on the first board and provided with a plurality of first couplers for connecting the first electronic circuit and the second electronic circuit.
In the plan view of the first substrate, K (K is an integer of 4 or more) of the first couplers are arranged at intervals on the circumference of the first circle.
(M × K) (m is an integer of 1 or more) first couplers are spaced on the circumference of the second circle, which is a concentric circle of the first circle and is larger than the first circle. Arranged in a space,
An electronic circuit board in which the first coupler is arranged point-symmetrically with respect to the center of the first circle. The first board and
An electronic circuit board formed on the first board and provided with a plurality of first couplers for connecting the first electronic circuit and the second electronic circuit.
In the plan view of the first substrate, K (K is an integer of 4 or more) of the first couplers are arranged at intervals on the circumference of the first circle.
The first coupler is point-symmetrically arranged with respect to the center of the first circle.
An electronic circuit board in which the first coupler is a signal line coupler having a signal line arranged along the radial direction or the circumferential direction of the first circle. In a plan view in which the first substrate overlaps with a second substrate provided with a plurality of second couplers of the second electronic circuit.
From the state where the first substrate is installed with respect to the second substrate so that the plurality of the first couplers are coupled to the plurality of the second couplers, around the center of the first circle. The electronic circuit board according to claim 1 or 2, wherein a plurality of the first couplers are coupled to the plurality of the second couplers in a state where the first substrate is rotated by 90 °. The electron according to any one of claims 1 to 3, wherein a port provided for taking out an input / output wiring connected to the first coupler is provided at one end of the first substrate. Circuit board. The electronic circuit board according to any one of claims 1 to 4, wherein a lead transmission line is drawn from the first coupler toward the inside of the first circle. The electronic circuit board according to any one of claims 1 to 5, wherein a lead transmission line is pulled out from the first coupler toward the outside of the first circle. The electronic circuit board according to any one of claims 1 to 6, wherein the K first couplers are used as a coupler group, and a plurality of the coupler groups are arranged rotationally symmetrically. The electronic circuit board according to any one of claims 1 to 7, wherein the plurality of first couplers are arranged so as not to overlap each other. A communication circuit including a first electronic circuit board and a second electronic circuit board arranged to face the first electronic circuit board.
The first electronic circuit board is the electronic circuit board according to claim 1.
The second electronic circuit board is
The second board and
A plurality of second couplers formed on the second substrate are provided.
Of the multiple second couplers
The L second couplers are arranged on the circumference of a third circle having the same size as the first circle.
(M × L) of the second couplers are arranged on the circumference of a fourth circle having the same size as the second circle.
In a plan view, the L second couplers on the circumference of the third circle overlap with the L first couplers to form L communication paths.
In a plan view, the (m × L) second couplers on the circumference of the fourth circle overlap with the (m × L) first couplers (m × L). L) A communication circuit in which five communication paths are formed. A communication circuit including a first electronic circuit board and a second electronic circuit board arranged to face the first electronic circuit board.
The first electronic circuit board is the electronic circuit board according to claim 2.
The second electronic circuit board is
The second board and
It is provided with L second couplers (L is an integer of 2 or more and K or less) formed on the second substrate.
The L second couplers
It is arranged on the circumference of a third circle of the same size as the first circle.
In a plan view, the first substrate and the second substrate are laminated so that the L second couplers and the L first couplers overlap with each other. A communication circuit in which individual communication paths are formed. The first board and
An electronic circuit board formed on the first board and provided with a plurality of first couplers for connecting the first electronic circuit and the second electronic circuit.
K (K is an integer of N or more) of the first couplers are arranged at intervals along the sides of a regular N polygon (N is an integer of 3 or more).
An electronic circuit board in which the K first couplers are arranged N times rotationally symmetric with respect to the center of the regular N-sided polygon. The electronic circuit board according to claim 11, wherein the first coupler is formed in an arc shape. The electronic circuit board according to claim 11 or 12, wherein a port provided for taking out an input / output wiring connected to the first coupler is arranged at one end of the first board. The electronic circuit board according to any one of claims 11 to 13, wherein the plurality of first couplers are arranged so as not to overlap each other. A communication circuit including a first electronic circuit board and a second electronic circuit board.
The first electronic circuit board is the electronic circuit board according to any one of claims 11 to 14.
The second electronic circuit board is
The second board and
It is provided with L second couplers (L is an integer of 2 or more and K or less) formed on the second substrate.
The L second couplers
It is arranged on the side of a regular N-sided polygon that has the same size as the regular N-sided polygon.
In a plan view, the first substrate and the second substrate are laminated so that the L second couplers and the L first couplers overlap with each other. A communication circuit in which individual communication paths are formed. It is a connection method for connecting the first electronic circuit board and the second electronic circuit board.
The first electronic circuit board is
The first board and
A plurality of first couplers provided on the first substrate are provided.
The second electronic circuit board is
The second board and
A plurality of second couplers provided on the second substrate are provided.
In the first electronic circuit board, K (K is an integer of 2 or more) of the first couplers are arranged N times (N is an integer of 2 or more) rotationally symmetric.
The first electronic circuit board so that L (L is an integer of 2 or more and K or less) of the first coupler and the second coupler overlap to form L communication paths. The first electronic circuit board and the second electronic circuit board are laminated so that the mounting angle between the first electronic circuit board and the second electronic circuit board is 360 ° × n / N (n is an arbitrary integer of 0 or more and less than N). Connection method.

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