JP5306398B2 - Electronics - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus which improves the quality of wireless communication between substrates. <P>SOLUTION: An electronic apparatus according to an embodiment includes: a first substrate having a first communication part; a second substrate having a second communication part conducting wireless communication with the first communication part; and a shielding body. The shielding body prevents electric waves other than electric waves used for the wireless communication between the first communication part and the second communication part from moving toward at least a part of a wireless communication path indicated by a straight line connecting the first communication part with the second communication part. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  Embodiments described herein relate generally to an electronic apparatus.

  2. Description of the Related Art Conventionally, a technique for performing wireless communication between substrates in an electronic device in which a plurality of substrates each mounted with an electronic circuit is housed in a housing is known.

JP 2007-235451 A

  However, in the conventional technology, for example, radio quality other than radio waves used for wireless communication between the two boards is mixed with a radio signal transmitted / received between the two boards, so that communication quality is deteriorated. There is a problem.

  The problem to be solved by the present invention is to provide an electronic device capable of improving the quality of wireless communication between substrates.

The electronic device according to the embodiment includes a first substrate having a first communication unit, a second substrate having a second communication unit that performs wireless communication with the first communication unit, a shield, and a third communication unit. A substrate . The shield includes at least one wireless communication path in which radio waves other than radio waves used for wireless communication between the first communication unit and the second communication unit are indicated by a straight line connecting the first communication unit and the second communication unit. Preventing progress toward the department. The first communication unit performs wired communication with the third communication unit.

FIG. 11 illustrates an example of a schematic configuration of an electronic device. The figure for demonstrating the structural example of the unit of 1st Embodiment. The top view of the board | substrate and shielding body seen from the A direction of FIG. The figure for demonstrating the structural example of the unit of 2nd Embodiment. The figure for demonstrating the structural example of the unit of 2nd Embodiment. FIG. 11 is a diagram illustrating an example of a schematic configuration of an electronic device according to Modification Example 1. The figure for demonstrating the structure of the modification 2. FIG. The figure for demonstrating the structure of the modification 3. FIG. The figure for demonstrating the structure of the modification 3. FIG. The figure for demonstrating the structure of the modification 4. FIG. The figure for demonstrating the structure of the modification 4. FIG. The figure for demonstrating the structure of the modification 5. FIG. The figure for demonstrating the structure of the modification 6. As shown in FIG. The figure for demonstrating the structure of the modification 7. FIG.

(First embodiment)
FIG. 1 is a diagram illustrating an example of a schematic configuration of an electronic device 100 according to the first embodiment. As shown in FIG. 1, the electronic device 100 includes a plurality of units P (Pa to Pd) each including two substrates that form a set for performing wireless communication, and a housing that houses the plurality of units P (Pa to Pd). And a body 10. Here, for convenience of explanation, the first unit P counted from the left in FIG. 1 is represented as Pa, the second unit P as Pb, the third unit P as Pc, and the fourth unit P as Pd. In addition, when it is not necessary to distinguish each unit, it only describes with the unit P. Between each unit P, wired communication via the communication line T is performed. More specifically, as shown in FIG. 1, the unit Pa performs wired communication with the unit Pb via the communication line T. The unit Pb performs wired communication with the unit Pa via the communication line T and also performs wired communication with the unit Pc via the communication line T. Furthermore, the unit Pc performs wired communication with the unit Pb via the communication line T, and performs wired communication with the unit Pd via the communication line T. Not limited to this, the units P may directly perform wired communication with each other. For example, the unit Pa may perform direct wired communication with the unit Pc or the unit Pd via the communication line T.

  FIG. 2 is a diagram for explaining a configuration example of the unit P. In FIG. 2, only the first unit Pa is illustrated, but the configurations of the other units Pb to Pd are the same. In the following, “a” is added to the end of the reference numeral attached to each element of the unit Pa, “b” is attached to the end of the reference numeral attached to each element of the unit Pb, and each element of the unit Pc is added. “C” is appended to the end of the reference numeral attached to “”, and “d” is appended to the end of the reference numeral attached to each element of the unit Pd.

  As shown in FIG. 2, the unit Pa includes a substrate 20a, a substrate 30a, and a shield 40a. The substrate 20 a is provided on the bottom surface of the housing 10. The substrate 30 a is fixed perpendicular to the side surface of the housing 10. As shown in FIG. 2, the substrate 30a is arranged perpendicular to the substrate 20a. Of the pair of side edges 31a and 31b of the substrate 30a, the side edge 31a on the bottom surface side of the housing 10 and the substrate 20a are arranged at a predetermined interval.

  As shown in FIG. 2, the substrate 20a includes a communication unit 22a. The communication unit 22a includes an antenna (not shown) that transmits and receives radio waves. A communication line T is connected to the communication unit 22a. The communication unit 22a performs wired communication with the communication unit 22b of the substrate 20b of the other unit Pb via the communication line T. Although not shown in detail, an electronic circuit including active elements such as transistors and diodes and passive elements such as resistors and capacitors is mounted (mounted) on the substrate 20a.

  Moreover, as shown in FIG. 2, the board | substrate 30a has the communication part 32a. The communication unit 32a includes an antenna (not shown) and performs wireless communication with the communication unit 22a. In the present embodiment, the positional relationship between the substrate 20a and the substrate 30a is set so that at least a part of the communication unit 32a overlaps the communication unit 22a. Although detailed illustration is omitted, an electronic circuit including an active element and a passive element is mounted on the substrate 30a.

  The shield 40a is a radio wave that flies inside the housing 10, and a radio wave other than the radio wave used for wireless communication between the communication unit 22a and the communication unit 32a connects the communication unit 22a and the communication unit 32a. It is a means which prevents progressing toward at least one part of the radio | wireless communication path 50a shown by these. In the present embodiment, the shield 40a is formed so as to surround the entire wireless communication path 50a. As shown in FIG. 2, the shape of the shield 40a is a cylinder, and each of the communication unit 22a and the communication unit 32a is surrounded by the shield 40a. More specifically, the edge of one end of the cylindrical shield 40a is in contact with the outside of the area where the communication unit 22a is arranged on the surface of the substrate 20a, and the edge of the other end is the communication. It arrange | positions in the same position as the upper edge of the part 32a. The edge of the other end may be disposed above the upper edge of the communication unit 32a, or may be disposed below the upper edge and above the lower edge.

  FIG. 3 is a plan view of the substrate 30a and the shield 40a when viewed from the direction A in FIG. In the present embodiment, the substrate 30a is formed with a notch Cu for fitting the periphery of the shield 40a. In addition, the installation method of the shield 40a is not limited to this, and is arbitrary. Moreover, the shape of the shield 40a is also arbitrary and is not limited to a cylindrical shape. In short, the shield 40a only needs to surround the entire wireless communication path 50a.

  In the present embodiment, the shield 40a is configured by a radio wave absorber that absorbs radio waves. The radio wave absorber only needs to absorb radio waves, and its configuration is arbitrary. For example, a magnetic material can be mixed with a resin, or iron powder can be mixed with a synthetic rubber, or a resin such as urethane foam or styrene can be impregnated with carbon. . For example, the shield 40a may be formed of a radio wave reflector that reflects radio waves. The radio wave reflector is made of, for example, a metal body. In short, the shield 40a may be anything that does not transmit radio waves.

  Here, the radio signal transmitted / received between the communication unit 22a and the communication unit 32a is radiated from the transmission-side antenna and received by the reception-side antenna. This wireless signal includes LOS (Line Of Sight), which is a component that linearly travels from the transmitting antenna to the receiving antenna, and a component that travels to the receiving side through a non-linear path due to reflection or diffraction. And NLOS (None Line Of Sight). Since the LOS component has a higher power than the NLOS component, the ratio contributing to the communication quality is also large. On the other hand, receiving interference from other radio waves (radio waves flying inside the housing 10 and used for wireless communication between the communication unit 22a and the communication unit 32a) reduces communication quality. It becomes a factor to greatly reduce. Other radio waves include, for example, radio waves used for wireless communication in the other units Pb to Pd, and EMI radiated from electronic components other than the communication units (22a, 32a) mounted on each of the substrate 20a and the substrate 30a. Electro Magnetic Interference).

  As described above, in the present embodiment, since the entire wireless communication path 50a indicated by the straight line connecting the communication unit 22a and the communication unit 32a is surrounded by the shield 40a, between the communication unit 22a and the communication unit 32a. It is possible to prevent interference from other radio waves without affecting the LOS component of the transmitted / received radio signal, and the NLOS component of the radio signal is mixed into the radio communication path 50 of the other unit P. Can be prevented. Therefore, according to this embodiment, there is an advantageous effect that the quality of wireless communication inside the housing 10 can be improved.

  In the present embodiment, since the entire wireless communication path 50a is surrounded by the shield 40a, the unit Pa cannot perform wireless communication with the other units Pb to Pd, but as described above, the communication unit 22a. Performs wired communication with the communication unit 22b of the other unit Pb, so that data can be transmitted between the units P.

  In the present embodiment, four units P (Pa to Pd) are provided in the housing 10, but the number of units P stored in the housing 10 is not limited to this. is there. For example, the number of units stored in the housing 10 may be only one, or may be five or more.

  In the above embodiment, focusing on the unit Pa, for example, the communication unit 22a corresponds to the “first communication unit”, the substrate 20a corresponds to the “first substrate”, and the communication unit 32a corresponds to the “second communication unit”. Correspondingly, the substrate 30a can be regarded as corresponding to the “second substrate”. Then, it can be understood that the communication unit 22b of the adjacent unit Pb corresponds to the “third communication unit” and the substrate 20b corresponds to the “third substrate”.

(Second Embodiment)
Next, a second embodiment will be described. In 2nd Embodiment, the shield 40a differs from the above-mentioned 1st Embodiment by the point which surrounds only a part of radio | wireless communication path 50a. Below, it demonstrates centering on the part which is different from the above-mentioned 1st Embodiment, and abbreviate | omits description suitably about the part which overlaps with 1st Embodiment.

  FIG. 4 is a diagram for explaining the configuration of the unit P of the present embodiment. In FIG. 4, only the unit Pa is illustrated, but the configurations of the other units Pb to Pd are the same. As shown in FIG. 4, the shield 40a surrounds only a portion of the wireless communication path 50a near the communication unit 22a of the substrate 20a, and the communication unit 22a is surrounded by the shield 40a. More specifically, the shield 40a is arranged such that the edge of one end thereof is in contact with the outside of the region where the communication unit 22a is arranged on the surface of the substrate 20a. As a result, a gap in which other radio waves are mixed can be eliminated.

  In the present embodiment, the portion close to the communication unit 22a in the wireless communication path 50a is surrounded by the shield 40a, so that the communication unit 22a can be prevented from receiving other radio waves. That is, according to the present embodiment, there is an advantageous effect that communication quality can be effectively improved with a small number of shields 40a.

  Here, an example has been described in which only a portion of the wireless communication path 50a close to the communication unit 22a is surrounded by the shield 40a. However, for example, as illustrated in FIG. 5, the wireless communication path 50a is close to the communication unit 32a. Only the portion may be surrounded by the shield 40a, and the communication unit 32a may be surrounded by the shield 40a. Also in the example of FIG. 5, the communication unit 32 a can be prevented from receiving other radio waves by surrounding the portion close to the communication unit 32 a in the wireless communication path 50 a with the shield 40 a. The configuration is not limited to the above example, and only the portion of the wireless communication path 50a other than the portion close to the communication unit 22a or the communication unit 32a may be surrounded by the shield 40a.

  As mentioned above, although embodiment of this invention was described, this embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. Hereinafter, modifications will be described. Note that the following modifications can be arbitrarily combined.

(Modification 1)
The first embodiment and the second embodiment described above can be combined. For example, as shown in FIG. 6, the shield 40a of the unit Pa surrounds the entire wireless communication path 50a, and the shield 40b of the unit Pb surrounds only the part close to the communication unit 22b in the wireless communication path 50b. The shield 40c of Pc surrounds only a portion close to the communication unit 22c in the wireless communication path 50c, and the shield 40d of the unit Pd surrounds only a portion close to the communication unit 22d of the wireless communication path 50d. Also good. Also in the example of FIG. 6, at least a part of the wireless communication path 50 of each unit P is surrounded by the shield 40, so that it does not affect the LOS component of the wireless signal in the unit P and can be transmitted from other radio waves. In addition, the NLOS component of the wireless signal can be prevented from being mixed into the wireless communication path 50 of the other unit P. Therefore, there is an advantageous effect that the quality of wireless communication inside the housing 10 can be improved.

(Modification 2)
In each of the embodiments described above, the substrate 20a having the communication unit 22a, the substrate 20b having the communication unit 22b, the substrate 20c having the communication unit 22c, and the substrate 20d having the communication unit 22d are provided separately. For example, the communication units 22a to 22d may be provided on the single substrate 20 with a predetermined interval. Hereinafter, the communication unit 22a and the communication unit 22b will be described with reference to FIG. 7, but the same applies to the communication unit 22c and the communication unit 22d. As in the above-described embodiments, the communication unit 22a performs wireless communication with the communication unit 32a of the substrate 30a, and the communication unit 22b performs wireless communication with the communication unit 32b of the substrate 30b. Further, similarly to the above-described embodiments, wired communication via the communication line T is performed between the communication units 22a to 22d.

  As shown in FIG. 7, the entire wireless communication path 50a connecting the communication unit 22a and the communication unit 32a with a straight line is surrounded by a shield 40a, and connecting the communication unit 22b and the communication unit 32b with a straight line. The entire wireless communication path 50b is also surrounded by the shield 40b. Thereby, the effect similar to the above-mentioned 1st Embodiment is acquired. Here, the shield 40a (40b) surrounds the entire wireless communication path 50a (50b), but is not limited thereto, and for example, as in the second embodiment described above, the shield 40a (40b). Can surround only the part close to the communication part 22a (22b) or the communication part 32a (32b) in the wireless communication path 50a (50b), or can surround only the other part.

  In the example of FIG. 7, the communication unit 22a corresponds to the “first communication unit”, the substrate 20 corresponds to the “first substrate”, the communication unit 32a corresponds to the “second communication unit”, and the substrate 30a corresponds to the “first communication unit”. It can be understood that it corresponds to the “second substrate”. In this case, it can be understood that the communication unit 22b on the substrate 20 corresponds to the “third communication unit”. The communication unit 22b corresponds to the “first communication unit”, the substrate 20 corresponds to the “first substrate”, the communication unit 32b corresponds to the “second communication unit”, and the substrate 30b corresponds to the “second substrate”. It can be understood that it corresponds to. In this case, it can be understood that the communication unit 22a or the communication unit 22c (not shown) on the substrate 20 corresponds to the “third communication unit”.

(Modification 3)
In the first embodiment described above, the shield 40 completely surrounds the periphery of the wireless communication path 50. However, the present invention is not limited to this. For example, the shield 40 is only a part of the periphery of the wireless communication path 50. May be enclosed. For example, as shown in FIG. 8, the shape of the shield 40a may be a semi-cylinder. In the example of FIG. 8, the semi-cylindrical shield 40a is arranged so as to prevent radio waves from the unit Pb from entering the wireless communication path 50a. Thereby, communication quality can be improved effectively with few shields 40a. Here, a semi-cylindrical shape is given as an example of the shape of the shield 40a. However, the shape of the shield 40a is not limited to this and is arbitrary.

  The same modification can be performed when the communication units 22a to 22d are provided on one substrate 20. For example, as shown in FIG. 9, the shape of the shield 40a may be a semi-cylinder. Similarly to the above, the semi-cylindrical shield 40a is disposed so as to prevent radio waves used for wireless communication between the communication unit 22b and the communication unit 32b from entering the wireless communication path 50a. Further, the same modification can be performed for the second embodiment described above, and the shield 40 may surround only a part of the periphery of a part of the wireless communication path 50.

(Modification 4)
As a material for the shield 40, a radio wave absorber and a radio wave reflector may be combined. Here, a modification of the configuration of FIG. 8 will be described as an example. As illustrated in FIG. 10, the shield 40 b includes a region 1301 and a region 1302. Here, the region 1301 functions to prevent radio waves from the unit Pa from entering the wireless communication path 50b. On the other hand, the region 1302 functions to prevent radio waves from a unit Pc (not shown) from entering the wireless communication path 50b.

  For example, the region 1301 can be formed of a radio wave absorber, and the region 1302 can be formed of a radio wave reflector. Further, for example, the region 1301 can be configured by a radio wave reflector, while the region 1302 can be configured by a radio wave absorber.

  Further, the same modification can be made to the configuration of FIG. As illustrated in FIG. 11, the shield 40 b includes the above-described region 1301 and region 1302. The region 1301 can be configured with a radio wave absorber, the region 1302 can be configured with a radio wave reflector, the region 1301 can be configured with a radio wave reflector, and the region 1302 can be configured with a radio wave absorber. .

  In addition, the above is an example and each of the area | region comprised with an electromagnetic wave absorber and the area | region comprised with an electromagnetic wave reflector among the shields 40 can be changed arbitrarily.

(Modification 5)
In each of the above-described embodiments, the shield 40 is provided for each unit P. However, the present invention is not limited to this, and for example, one shield 40 can be shared between adjacent units P. Hereinafter, the description will be given focusing on the unit Pa and the unit Pb with reference to FIG. 12, but the same applies to the unit Pc and the unit Pd.

  In the example of FIG. 12, a flat shield 40AB is arranged between the unit Pa and the unit Pb arranged in parallel, and the shield 40AB is shared by the unit Pa and the unit Pb. The shield 40AB prevents radio waves used for wireless communication between the communication unit 22b and the communication unit 32b of the unit Pb from traveling toward the wireless communication path 50a of the unit Pa, and the communication unit 22a of the unit Pa. And a radio wave used for wireless communication between the communication unit 32a and the communication unit 32a are arranged so as to prevent the radio waves from traveling toward the wireless communication path 50b of the unit Pb. As a result, it is possible to prevent interference from radio waves used for wireless communication of the unit Pb without affecting the LOS component of the wireless signal transmitted and received between the communication unit 22a and the communication unit 32a. It is possible to prevent the NLOS component of the wireless signal from entering the wireless communication path 50b of the unit Pb. In addition, it is possible to prevent interference from radio waves used for the wireless communication of the unit Pa without affecting the LOS component of the wireless signal transmitted and received between the communication unit 22b and the communication unit 32b, and the wireless It is possible to prevent the NLOS component of the signal from entering the wireless communication path 50a of the unit Pa. Therefore, there is an advantageous effect that the quality of wireless communication inside the housing 10 can be improved. In addition, although the flat plate was mentioned here as an example of the shape of the shielding body 40, it is not restricted to this, The shape of the shielding body 40 is arbitrary.

  In the example of FIG. 12, the communication unit 22a corresponds to a “first communication unit”, the substrate 20a corresponds to a “first substrate”, the communication unit 32a corresponds to a “second communication unit”, and the substrate 30a includes “ It can be understood that it corresponds to the “second substrate”. The communication unit 22b corresponds to the “fifth communication unit”, the substrate 20b corresponds to the “fifth substrate”, the communication unit 32b corresponds to the “fourth communication unit”, and the substrate 30b corresponds to the “fourth substrate”. It can be understood that it corresponds to. The communication unit 22b corresponds to the “fourth communication unit”, the substrate 20b corresponds to the “fourth substrate”, the communication unit 32b corresponds to the “fifth communication unit”, and the substrate 30b corresponds to the “fourth substrate”. It can be understood that it corresponds to.

  The same modification can be performed when the communication units 22a to 22d are provided on one substrate 20. Here, a communication unit that performs wireless communication with each other is regarded as one pair U, a set of the communication unit 22a and the communication unit 32a is Ua, a set of the communication unit 22b and the communication unit 32b is Ub, and the communication unit 22c communicates A set of the unit 22c is expressed as Uc, and a set of the communication unit 22d and the communication unit 32d is expressed as Ud. When there is no need to distinguish each group, it is simply expressed as a group U. Each set U is arranged in parallel, and one set 40 is shared by adjacent sets U. In the following, the description will be given focusing on the set Ua and the set Ub with reference to FIG. 13, but the same applies to the set Uc and the set Ud.

  As shown in FIG. 13, a flat shield 40AB is arranged between the set Ua and the set Ub, and the shield 40AB is shared by the set Ua and the set Ub. The shield 40AB prevents radio waves used for wireless communication between the communication unit 22b and the communication unit 32b of the set Ub from proceeding toward the wireless communication path 50a of the set Ua, and the communication unit 22a of the set Ua. And a radio wave used for wireless communication between the communication unit 32a and the communication unit 32a are arranged so as to prevent the radio waves from traveling toward the wireless communication path 50b of the set Ub. Thereby, the same effect as the example of FIG. 12 is acquired.

  In the example of FIG. 13, the communication unit 22a corresponds to the “first communication unit”, the substrate 20 corresponds to the “first substrate”, the communication unit 32a corresponds to the “second communication unit”, and the substrate 30a corresponds to the “first communication unit”. It can be understood that it corresponds to the “second substrate”. The communication unit 22b on the substrate 20 corresponds to the “seventh communication unit”, the communication unit 32b corresponds to the “sixth communication unit”, and the substrate 30b corresponds to the “sixth substrate”.

(Modification 6)
In the first embodiment described above, for example, when focusing on the first unit Pa, the substrate 30a is arranged perpendicular to the substrate 20a. However, the present invention is not limited to this, for example, as shown in FIG. You may arrange | position so that the board | substrate 20a may oppose. In the example of FIG. 14, the cylindrical shield 40a surrounds the entire wireless communication path 50a, and one end thereof is in contact with the outside of the area where the communication unit 22a is disposed on the surface of the substrate 20a. The other end is in contact with the outside of the region where the communication unit 32a is disposed on the surface of the substrate 30a. Note that similar modifications can be made in the second embodiment described above.

DESCRIPTION OF SYMBOLS 10 Case 20 Board | substrate 22 Communication part 22b Communication part 30 Board | substrate 32 Communication part 40 Shielding body 50 Wireless communication path 100 Electronic device P Unit T Communication line U group

Claims (9)

A first substrate having a first communication unit;
A second substrate having a second communication unit for performing wireless communication with the first communication unit;
At least one of the wireless communication paths indicated by a straight line connecting the first communication unit and the second communication unit is a radio wave other than the radio wave used for the wireless communication between the first communication unit and the second communication unit. A shield that prevents it from moving toward the part,
A third substrate having a third communication unit,
The first communication unit performs wired communication with the third communication unit.
An electronic device characterized by that. A first substrate having a first communication unit;
  A second substrate having a second communication unit for performing wireless communication with the first communication unit;
  At least one of the wireless communication paths indicated by a straight line connecting the first communication unit and the second communication unit is a radio wave other than the radio wave used for the wireless communication between the first communication unit and the second communication unit. A shield that prevents progress toward the part,
  The first substrate includes a third communication unit that performs wired communication with the first communication unit.
  An electronic device characterized by that. A housing for housing the first substrate, the second substrate, the third substrate, and the shield;
  The electronic device according to claim 1. A housing for housing the first substrate, the second substrate, and the shield;
The electronic device according to claim 2 . The shield surrounds at least a part of the wireless communication path;
The electronic device according to claim 1 , wherein the electronic device is an electronic device. The shield surrounds the entirety of the wireless communication path;
The electronic device according to claim 5 , wherein: A first substrate having a first communication unit;
  A second substrate having a second communication unit for performing wireless communication with the first communication unit;
  At least one of the wireless communication paths indicated by a straight line connecting the first communication unit and the second communication unit is a radio wave other than the radio wave used for the wireless communication between the first communication unit and the second communication unit. A shield that prevents it from moving toward the part,
  A fourth substrate having a fourth communication unit;
  A fifth substrate having a fifth communication unit that performs wireless communication with the fourth communication unit,
  The shield prevents a radio wave used for wireless communication between the fourth communication unit and the fifth communication unit from traveling toward the wireless communication path, and also includes the first communication unit and the first communication unit. The radio wave used for radio communication with the two communication units is arranged to prevent the radio waves from traveling toward the second radio communication path indicated by the straight line connecting the fourth communication unit and the fifth communication unit. The
  An electronic device characterized by that. A first substrate having a first communication unit;
A second substrate having a second communication unit for performing wireless communication with the first communication unit;
At least one of the wireless communication paths indicated by a straight line connecting the first communication unit and the second communication unit is a radio wave other than the radio wave used for the wireless communication between the first communication unit and the second communication unit. A shield that prevents it from moving toward the part,
A sixth substrate having a sixth communication unit,
The first substrate includes a seventh communication unit that performs wireless communication with the sixth communication unit,
The shield prevents radio waves used for wireless communication between the sixth communication unit and the seventh communication unit from traveling toward the wireless communication path, and also includes the first communication unit and the first communication unit. The radio wave used for wireless communication with the two communication units is arranged to prevent the radio waves from traveling toward the third wireless communication path indicated by a straight line connecting the sixth communication unit and the seventh communication unit. The
An electronic device characterized by that. The shield is configured to include at least one of a radio wave absorber that absorbs radio waves and a radio wave reflector that reflects radio waves,
  The electronic apparatus according to claim 1, wherein the electronic apparatus is any one of claims 1, 2, 7 and 8.

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