JP2013214647A - Electromagnetic shield door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To materialize an electromagnetic shield door requiring no periodical maintenance since electromagnetic shield characteristics are not deteriorated, having electromagnetic shield characteristics mainly in a high frequency band forming a GHz band or a higher one, and also having broad band electromagnetic shield characteristics.SOLUTION: This electromagnetic shield door includes a conductive door frame 2, a conductive door 1 disposed on the door frame 2, and a plurality of dielectrics disposed along the periphery of at least one of the wall surface of the door 1 and the wall surface of the door frame 2 so as not to make contact with the facing surface thereof in a gap between the door frame 2 and the door 1 in the closed state of the door 1. The dielectric includes a conductor pattern electrically connected to the door 1 or the door frame 2 while having a prescribed width on the surface thereof in the circumferential direction of the door 1 and the door 2, the prescribed width of the conductive pattern is set at the 1/4 wavelength of a frequency in a bandwidth in which electromagnetic shield characteristics are required, conductive patterns on respective surfaces of adjacent dielectrics are electrically connected by a conductor.

Description

  The present invention relates to an electromagnetic shield door used for preventing leakage and intrusion of electromagnetic waves at the entrance and exit of a shield room.

  A configuration example of a conventional electromagnetic shield door is shown in FIGS. FIG. 15 is a view showing a conventional electromagnetic shield door, and FIG. 16 is an enlarged view of an XY section passing through a broken line A-A ′ in FIG. 15. As shown in FIGS. 15 and 16, the electromagnetic shield door includes a door 1, a door frame 2, a conductive gasket 6, a hinge 7, and an opening / closing lever 8. The door 1 and the door frame 2 are electrically conductive, are connected via a hinge 7, and have a structure that can be opened and closed by operating an opening / closing lever 8. The conductive gasket 6 has conductive and elastic characteristics, and is arranged on the wall surface of the door 1 on the facing surface of the door 1 and the door frame 2.

  Next, the operation of the conventional electromagnetic shield door will be described. As shown in FIG. 16, when the door 1 is closed, the conductive gasket 6 contacts the door frame 2, and the door 1 and the door frame 2 are electrically connected. Since all the gaps between the door 1 and the door frame 2 are electrically connected by the connection, leakage and intrusion of electromagnetic waves in the gap between the door 1 and the door frame 2 can be prevented, and electromagnetic shielding characteristics can be obtained. Patent Document 1 discloses a connection structure between a door and a door frame using a conductive cushion material as a configuration for realizing higher performance electromagnetic shielding characteristics.

Japanese Patent Laid-Open No. 7-94886

As described above, in the conventional electromagnetic shield door, the door 1 and the door 1 are closed when the door 1 is closed by disposing the conductive gasket 6 on at least one of the conductive door 1 and the conductive door frame 2. The frame 2 is in electrical contact and realizes electromagnetic shielding characteristics.
However, when the number of times of opening and closing the door 1 is increased, electromagnetic shielding characteristics are deteriorated due to wear of the conductive gasket 6 and metal fatigue, so that there is a problem that regular maintenance is required.
Also, with the conventional electromagnetic shield door structure, it has been difficult to realize sufficient electromagnetic shield characteristics in a high frequency band of GHz or higher.
Furthermore, it has been difficult to realize a broadband electromagnetic shielding characteristic.

  The present invention has been made in order to solve the above-described problems, does not deteriorate the electromagnetic shield characteristics, and does not require periodic maintenance, and has the electromagnetic shield characteristics mainly in the high frequency band of the GHz band or higher. Furthermore, it aims at realization of the electromagnetic shielding door which has a broadband electromagnetic shielding characteristic.

  In order to achieve the above object, an electromagnetic shield door according to the present invention includes a conductive door frame, a conductive door disposed on the door frame, the door frame in a state where the door is closed, and the door. In the gap, a plurality of dielectrics are disposed so as to be in non-contact with the opposing surface along at least one of the wall surface of the door and the wall surface of the door frame, and the dielectric material has a predetermined width on the surface. A conductor pattern electrically connected to the door or the door frame is provided in a circumferential direction of the door and the door frame, and the predetermined width of the conductor pattern is a quarter of a frequency within a band where electromagnetic shielding characteristics are required. The conductive pattern on each surface of the adjacent dielectric is electrically connected by a conductor.

  According to the electromagnetic shield door of the present invention, the electromagnetic shield characteristic is not deteriorated and periodic maintenance is unnecessary, and the electromagnetic shield characteristic is mainly provided in the high frequency band of the GHz band or higher, and further, the broadband electromagnetic shield characteristic is provided. Can be obtained.

It is a figure which shows the electromagnetic shielding door which concerns on Embodiment 1 of this invention. It is an enlarged view which shows XY cross section which passes along A-A 'of FIG. It is the YZ top view which looked at the resonator loading dielectric material in FIG. 2 from the opposite side to the sticking surface to a door. It is an enlarged view of the junction part of the adjacent resonator loading dielectric material in Embodiment 1 of this invention. It is a figure which shows the permeation | transmission coefficient of the electromagnetic wave which propagates the clearance gap between the door and door frame in Embodiment 1 of this invention to a Y direction. It is an enlarged view of the junction part of the adjacent resonator loading dielectric material in Embodiment 2 of this invention. It is a figure which shows the example which has arrange | positioned the dielectric material to the junction part of the resonator loading dielectric material which adjoins in Embodiment 2 of this invention. It is an enlarged view of the junction part of the adjacent resonator loading dielectric material in Embodiment 3 of this invention. It is an enlarged view of the junction part of the adjacent resonator loading dielectric material in Embodiment 4 of this invention. It is an enlarged view of the junction part of the resonator loading dielectric material of the C section of FIG. 1 in Embodiment 5 of this invention. It is an enlarged view of the junction part of the resonator loading dielectric material of the C section of FIG. 1 in Embodiment 6 of this invention. It is a figure which shows the example which has arrange | positioned the dielectric material to the junction part of the resonator loading dielectric material of the C section of FIG. 1 in Embodiment 6 of this invention. It is an enlarged view of the junction part of the resonator loading dielectric material of the C section of FIG. 1 in Embodiment 7 of this invention. It is an enlarged view of the junction part of the resonator loading dielectric material of the C section of FIG. 1 in Embodiment 8 of this invention. It is a figure which shows the conventional electromagnetic shielding door. FIG. 16 is an enlarged view showing an XY cross section passing through A-A ′ of FIG. 15.

Hereinafter, in order to explain the present invention in more detail, modes for carrying out the present invention will be described with reference to the accompanying drawings.
Embodiment 1 FIG.
An electromagnetic shield door according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 is a diagram showing an electromagnetic shield door according to Embodiment 1, and FIG. 2 is an enlarged view of an XY section passing through AA ′ of FIG. 1. As shown in FIGS. 1 and 2, the electromagnetic shield door includes a door 1, a door frame 2, and a resonator loaded dielectric 3. The door 1 and the door frame 2 are electrically conductive, are connected via a hinge 7, and have a structure that can be opened and closed by operating an opening / closing lever 8.

  The resonator-loaded dielectric 3 has a resonance structure, and a plurality of the resonator-loaded dielectrics 3 are arranged so as to be in non-contact with the door frame 2 along the periphery of the wall surface of the door 1 in the gap between the door 1 and the door frame 2.

  Next, the resonance structure arranged in the resonator loaded dielectric 3 will be described with reference to FIG. FIG. 3 is a YZ plan view of the resonator-loaded dielectric 3 in FIG. 2 as viewed from the side opposite to the surface to be bonded to the door 1. In FIG. 3, conductor patterns 4a, 4b, 4c, and 4d, which are band-like metal conductors arranged along the circumferential direction of the door 1 on the surface opposite to the surface of the resonator-loaded dielectric 3 attached to the door 1, are shown. , 4e, 4f, 4g, 4h, and through-through-hole rows 5a, 5b, in which through-holes are arranged in a row along the Z-axis direction that is the circumferential direction of the door 1, inside the resonator-loaded dielectric 3. 5c and 5d are shown.

  The Y-direction dimensions of the conductor patterns 4a, 4b, 4c, 4d, 4e, 4f, 4g, and 4h are La, Lb, Lc, Ld, Le, Lf, Lg, and Lh, and the Y-direction dimension La of each conductor pattern. , Lb, Lc, Ld, Le, Lf, Lg, and Lh are quarter wavelengths on the resonator loaded dielectric 3 at frequencies fa, fb, fc, fd, fe, ff, fg, and fh, respectively. (Fb = 1.5fa, fc = 2fa, fd = 2.5fa, fe = 3.5fa, ff = 4fa, fg = 5fa, fh = 6.5fa).

  The through-through hole row 5a has conductive patterns 4a and 4b, the through-through hole row 5b has conductive patterns 4c and 4d, the through-through hole row 5c has conductive patterns 4e and 4f, and the through-through hole row 5d has conductive patterns 4g and 4h. Are electrically connected to the door 1 respectively.

  Conductive patterns 4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h and through-through hole rows 5a, 5b, 5c, 5d are arranged in the Y-axis direction with conductive pattern 4a, through-through hole row 5a, conductive pattern 4b, The conductor pattern 4c, the through-through hole row 5b, the conductor pattern 4d, the conductor pattern 4e, the through-through hole row 5c, the conductor pattern 4f, the conductor pattern 4g, the through-through hole row 5d, and the conductor pattern 4h are arranged in this order. The distance in the Y direction between 4b and the conductor pattern 4c is Sa, the distance in the Y direction between the conductor pattern 4d and the conductor pattern 4e is Sb, and the distance in the Y direction between the conductor pattern 4f and the conductor pattern 4g is Sc.

  The junction part of the adjacent resonator loading dielectric material 3 is demonstrated using FIG. FIG. 4 shows the resonator loaded dielectrics 3a and 3b adjacent to each other among the resonator loaded dielectrics 3 arranged on the wall surface side of the door 1 in the gap between the door 1 and the door frame 2 in the first embodiment of the present invention. It is an enlarged view of the junction part. As shown in FIG. 4, adjacent resonator-loaded dielectrics 3a and 3b each have a short-circuit structure with the conductor pattern 4 and the through-through hole array 5 shown in FIG. It is connected. The copper foil tape 9 electrically connects the conductor patterns 4 disposed on the surfaces of the resonator loaded dielectrics 3a and 3b.

  Next, the operation of the electromagnetic shield door according to Embodiment 1 will be described. The Y direction dimension of the conductor pattern 4a is a quarter wavelength on the resonator loaded dielectric 3 at the frequency fa, one end in the Y direction is an open end, and the other end in the Y direction is a through-through-hole array 5a. Therefore, the conductor pattern 4a has one end that resonates at a frequency fa and an odd multiple of the frequency fa (3fa, 5fa,..., (2n + 1) fa (n is a natural number)). Operates as a short circuit resonance circuit. Similarly, the conductor patterns 4b, 4c, 4d, 4e, 4f, 4g, and 4h are resonances of one-end short-circuit that resonates at frequencies fb, fc, fd, fe, ff, fg, and fh, respectively, at odd multiples. Operates as a circuit.

  Here, when the electromagnetic wave having the frequency fa propagates in the Y direction through the gap between the door 1 and the door frame 2, the conductor pattern 4a resonates and electromagnetically couples with the electromagnetic wave, and the gap between the door 1 and the door frame 2 is reduced. The electromagnetic wave having the frequency fa propagating in the Y direction is attenuated. Similarly, when an electromagnetic wave having an odd multiple of the frequency fa, the frequencies fb, fc, fd, fe, ff, fg, fh, and each odd multiple of the frequency propagates through the gap between the door 1 and the door frame 2 in the Y direction. Any of the conductor patterns 4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h resonates and electromagnetically couples with the electromagnetic wave, so that these frequencies propagate through the gap between the door 1 and the door frame 2 in the Y direction. The electromagnetic waves are also attenuated. As a result, at the frequencies fa, fb, fc, fd, fe, ff, fg, fh and odd multiples of each, leakage and penetration of electromagnetic waves in the gap between the door 1 and the door frame 2 are prevented, as shown in FIG. In addition, a wide band having poles at frequencies fa, 1.5fa, 2fa, 2.5fa, 3fa, 3.5fa, 4fa, 4.5fa, 5fa, 5.5fa, 6fa, 6.5fa, 7fa, 7.5fa As a result, a broadband electromagnetic shielding characteristic is obtained.

  Further, as shown in FIG. 4, by having the copper foil tape 9, even if there is a gap between the adjacent resonator loaded dielectrics 3a and 3b, the conductor pattern 4 of the resonator loaded dielectrics 3a and 3b is Since it is electrically connected, the electromagnetic wave propagating through the junction between the resonator loaded dielectrics 3a and 3b adjacent to each other in the gap between the door 1 and the door frame 2 is also other than the junction of the resonator loaded dielectric 3 As in the case of the electromagnetic wave propagating through the antenna, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained.

  According to the first embodiment, since the door 1 and the door frame 2 are not in contact with each other, even when the number of times the door 1 is opened and closed increases, the electromagnetic shielding characteristics are not deteriorated, and periodic maintenance is unnecessary. .

  Further, according to the first embodiment, the frequency band in which the electromagnetic shielding characteristic is obtained is determined by the frequency at which the conductor pattern 4 having the resonance structure arranged in the resonator-loaded dielectric 3 resonates. Therefore, it is possible to realize effective electromagnetic shielding characteristics in a high frequency band such as a GHz band or a millimeter wave band, which is relatively easy to manufacture.

  Further, according to the first embodiment, the Y-direction dimensions La, Lb, Lc, Ld, Le, Lf, Lg, and Lh of the conductor patterns 4a, 4b, 4c, 4d, 4e, 4f, 4g, and 4h are respectively set to frequencies. In fa, 1.5fa, 2fa, 2.5fa, 3.5fa, 4fa, 5fa, and 6.5fa, the frequency fa is obtained by dispersing the frequency to be a quarter wavelength on the resonator-loaded dielectric 3. To 7.5 fa wide electromagnetic shielding characteristics can be realized.

  In the first embodiment, the resonator loaded dielectric 3 is disposed on the wall surface of the door 1 in the gap between the door 1 and the door frame 2, but the resonator loaded dielectric 3 is formed between the door 1 and the door frame 2. You may arrange | position to the wall surface of the door frame 2 in the opposing surface, or both wall surfaces of the door 1 and the door frame 2. FIG. When the resonator loaded dielectric 3 is disposed on the wall surface of the door frame 2, the through-through hole row 5 electrically connects the conductor pattern 4 and the door frame 2. Further, when the resonator-loaded dielectric 3 is disposed on both wall surfaces of the door 1 and the door frame 2, the resonator-loaded dielectric 3 is disposed so as not to contact each other.

  In the first embodiment, a one-end short-circuited resonance circuit is applied as the resonance structure arranged in the resonator-loaded dielectric 3, but the resonance structure arranged in the resonator-loaded dielectric 3 is a one-end short-circuited resonance circuit. For example, a resonant circuit such as open at both ends, shorted at both ends, or a ring type may be applied. In the case of a resonant circuit with both ends open, if the frequency at which the shortest distance between the open ends is a half wavelength is f, the resonance circuit resonates at frequencies f, 2f, 3f,. In this case, assuming that the frequency at which the shortest distance between the short-circuit ends is a half wavelength is f, resonance occurs at frequencies f, 2f, 3f,. In the case of a ring-type resonance circuit, if the frequency at which the circumference of the ring is one wavelength is f, resonance occurs at frequencies f, 2f, 3f,.

  In the first embodiment, the Y-direction dimensions La, Lb, Lc, Ld, Le, Lf, Lg, and Lh of the conductor patterns 4a, 4b, 4c, 4d, 4e, 4f, 4g, and 4h are respectively set to frequencies fa, 1.5fa, 2fa, 2.5fa, 3.5fa, 4fa, 5fa, and 6.5fa are dispersed so as to have a quarter wavelength on the resonator-loaded dielectric 3, but a broadband electromagnetic shield If the characteristics can be obtained, it is not necessary to limit the frequency to be dispersed to the above frequency.

In the first embodiment, the eight conductor patterns 4a, 4b, 4c, 4d, 4e, 4f, 4g, 4h and the four through-through hole rows 5a, 5b, 5c, 5d are applied. And the number of through-hole rows need not be limited to the above numbers.
In the first embodiment, the through-through hole rows 5a, 5b, 5c, and 5d are applied as the short-circuiting means for the conductor patterns 4a, 4b, 4c, 4d, 4e, 4f, 4g, and 4h. It is not necessary to limit to the through-through hole row, and for example, a short circuit may be made with a conductive screw or a metal plate.

  In the first embodiment, the copper foil tape 9 is used for the electrical connection between the conductor patterns 4 arranged on the adjacent resonator-loaded dielectrics 3a and 3b. If obtained, it is not necessary to limit the electrical connection means between the conductor patterns 4 to the copper foil tape 9.

  As mentioned above, according to the electromagnetic shielding door in Embodiment 1 of this invention, the conductive door frame 2, the conductive door 1 arrange | positioned at the door frame 2, and the door in the state which closed the door 1 In the gap between the frame 2 and the door 1, a plurality of resonator-loaded dielectrics 3 are arranged so as to be in non-contact with the facing surface along at least one of the wall surface of the door 1 and the wall surface of the door frame 2. The loading dielectric 3 has a conductor pattern 4 having a predetermined width on the surface and electrically connected to the door 1 or the door frame 2 in the circumferential direction of the door 1 and the door frame 2, and the conductor pattern 4 has a predetermined width. The electromagnetic shielding characteristic is set to a quarter wavelength of the frequency within the required band, and the conductor patterns 4 on the surfaces of the adjacent resonator-loaded dielectrics 3a and 3b are electrically connected by a conductor. Because it is configured, the electromagnetic shielding characteristics do not deteriorate and periodic maintenance is not required. Mainly it has electromagnetic shielding characteristics in a GHz band or a high frequency band, further, it is possible to obtain a wide-band electromagnetic shielding properties.

Embodiment 2. FIG.
An electromagnetic shield door according to Embodiment 2 of the present invention will be described with reference to FIGS. 1 to 3 and FIG. Since FIG. 1 to FIG. 3 are the same as the electromagnetic shield door according to the first embodiment, description thereof is omitted. FIG. 6 shows the resonator loaded dielectrics 3a and 3b adjacent to each other among the resonator loaded dielectrics 3 arranged on the wall surface side of the door 1 in the gap between the door 1 and the door frame 2 in the second embodiment of the present invention. It is an enlarged view of the junction part. In FIG. 6, two adjacent resonator loaded dielectrics 3 a and 3 b have a short-circuit structure with the conductor pattern 4 and the through-through hole array 5 shown in FIG. 3, and include a copper foil tape 9 and a conductor gasket 10. The copper foil tape 9 is electrically connected between the conductor patterns 4 arranged on the surfaces of the resonator-loaded dielectrics 3a and 3b, and the conductor gasket 10 has a conductive property on the surface and is adjacent The resonator-loaded dielectrics 3a and 3b are arranged so as to fill the gap. As described above, the second embodiment has the same structure as that of the first embodiment except for the joint portion between the adjacent resonator-loaded dielectrics 3a and 3b arranged in the gap between the door 1 and the door frame 2. doing.

  As shown in FIG. 6, the conductive gasket 10 has a conductive property on the surface, and is disposed so as to fill a gap between the adjacent resonator-loaded dielectrics 3a and 3b. As described above, the second embodiment has the same structure as that of the first embodiment except for the joint portion between the adjacent resonator-loaded dielectrics 3a and 3b arranged in the gap between the door 1 and the door frame 2. doing.

  Next, the operation of the electromagnetic shield door according to the second embodiment will be described. Since the structure of the second embodiment is the same as that of the first embodiment except for the joint portion between the resonator loaded dielectrics 3a and 3b arranged adjacent to the gap between the door 1 and the door frame 2, the adjacent resonator loading is performed. As with the first embodiment, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained for electromagnetic waves propagating through locations other than the junction between the dielectrics 3a and 3b.

  In the second embodiment, the conductor pattern 4 disposed in each of the resonator loaded dielectrics 3a and 3b adjacent to each other in the gap between the door 1 and the door frame 2 is the copper foil tape 9 as in the first embodiment. And the conductive gasket 10 is disposed in the gap between the adjacent resonator-loaded dielectrics 3a and 3b, so that the adjacent resonator-loaded dielectrics 3a and 3b are electrically connected to each other. In the gap between the door 1 and the door frame 2, the electromagnetic wave propagating through the junction between the adjacent resonator-loaded dielectrics 3 a and 3 b also has the broadband electromagnetic shielding characteristics shown in FIG. 5. can get.

  In the second embodiment, since the conductor gasket 10 is disposed in the gap between the adjacent resonator-loaded dielectrics 3a and 3b, there is a spatial gap between the adjacent resonator-loaded dielectrics 3a and 3b. Misalignment of the resonator-loaded dielectrics 3a and 3b that does not exist and is likely to occur due to repeated door opening and closing operations can be suppressed.

  That is, according to the second embodiment, it is possible to realize an electromagnetic shield door that has a broadband electromagnetic shielding characteristic similar to that of the first embodiment and can suppress the displacement of the resonator-loaded dielectric 3.

  In the second embodiment, the conductor gasket 10 is disposed in the gap between the adjacent resonator loaded dielectrics 3a and 3b. However, the gap between the adjacent resonator loaded dielectrics 3a and 3b is also spatially reduced. The member disposed in the gap between the adjacent resonator-loaded dielectrics 3a and 3b need not be limited to the conductor gasket 10 as long as it is electrically filled. For example, FIG. 7 shows an example in which the dielectric 11 is arranged instead of the conductor gasket 10 in FIG. FIG. 7 differs from FIG. 6 only in that a dielectric 11 is provided instead of the conductor gasket 10, and the rest of the configuration is the same as FIG.

  Further, the electrical connection between the side surface of the resonator-loaded dielectric 3 and the conductor gasket 10 may be strengthened by disposing conductive paint or a conductor pattern on the side surface of the resonator-loaded dielectric 3.

  As described above, according to the electromagnetic shield door according to the second embodiment of the present invention, the conductor gasket 10 or the dielectric 11 is arranged in the gap between the adjacent resonator-loaded dielectrics 3a and 3b. In addition to the effects of the first embodiment, there is no spatial gap between adjacent resonator-loaded dielectrics 3a and 3b, and the displacement of the resonator-loaded dielectric 3 is likely to occur due to repeated door opening and closing operations. Can be suppressed.

Embodiment 3 FIG.
An electromagnetic shield door according to Embodiment 3 of the present invention will be described with reference to FIGS. 1 to 2 and FIG. Since FIG. 1 to FIG. 3 are the same as the electromagnetic shield door according to the first embodiment, description thereof is omitted. FIG. 8 shows the resonator loaded dielectrics 3a and 3b adjacent to each other among the resonator loaded dielectrics 3 arranged on the wall surface side of the door 1 in the gap between the door 1 and the door frame 2 in the third embodiment of the present invention. It is an enlarged view of the junction part. In FIG. 8, adjacent resonator-loaded dielectrics 3 a and 3 b have a short circuit structure with the conductor pattern 4 and the through-through hole array 5 shown in FIG.

  The flexible substrate 12 is a dielectric substrate having a foldable characteristic, and a conductor pattern having the same dimension in the Y direction as the conductor pattern 4 disposed on the resonator-loaded dielectrics 3a and 3b is provided on one surface of the flexible substrate 12. Are arranged, and each conductor pattern electrically connects the conductor patterns 4 respectively arranged on the resonator-loaded dielectrics 3a and 3b. As described above, the third embodiment has the same structure as that of the first embodiment except for the joint portion between the adjacent resonator-loaded dielectrics 3a and 3b disposed in the gap between the door 1 and the door frame 2. doing.

  Next, the operation of the electromagnetic shield door according to Embodiment 3 will be described. Since the structure of the third embodiment is the same as that of the first embodiment except for the joint portion between the resonator-loaded dielectrics 3a and 3b disposed adjacent to the gap between the door 1 and the door frame 2, the adjacent resonator loading is performed. As with the first embodiment, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained for electromagnetic waves propagating through locations other than the junction between the dielectrics 3a and 3b.

  In the third embodiment, the conductor pattern 4 disposed in each of the resonator loaded dielectrics 3a and 3b adjacent to each other in the gap between the door 1 and the door frame 2 is implemented by the conductor pattern disposed on the flexible substrate 12. In the same manner as in the first embodiment, they are electrically connected. Therefore, there is no electrical gap between the adjacent resonator-loaded dielectrics 3a and 3b, and the gap between the door 1 and the door frame 2 propagates through the junction between the adjacent resonator-loaded dielectrics 3a and 3b. Even in the case of electromagnetic waves, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained.

  Further, in the third embodiment, since one flexible substrate 12 is used at one joint portion between adjacent resonator-loaded dielectrics 3a and 3b, conductor patterns disposed on adjacent resonator-loaded dielectrics 3a and 3b, respectively. 4 can be easily connected. That is, according to the third embodiment, an electromagnetic shield door having the same broadband electromagnetic shielding characteristics as in the first embodiment and having a simple structure of the joint portion between the adjacent resonator-loaded dielectrics 3a and 3b is realized. it can.

  As described above, according to the electromagnetic shield door according to the third embodiment of the present invention, the conductor that electrically connects the conductor patterns 4 on the surfaces of the adjacent resonator-loaded dielectrics 3a and 3b is a flexible substrate. In addition to the effects of the first embodiment, the electrical connection of the conductor patterns 4 respectively disposed on the adjacent resonator-loaded dielectrics 3a and 3b can be easily performed. .

Embodiment 4 FIG.
An electromagnetic shield door according to Embodiment 4 of the present invention will be described with reference to FIGS. 1 to 3 and FIG. Since FIG. 1 to FIG. 3 are the same as the electromagnetic shield door according to the first embodiment, description thereof is omitted. FIG. 9 shows adjacent resonator loaded dielectrics 3a and 3b among the resonator loaded dielectrics 3 arranged on the wall surface side of the door 1 in the gap between the door 1 and the door frame 2 according to the fourth embodiment of the present invention. FIG. 4 is an enlarged view of the joint part, and the description of each part is the same as FIG. In FIG. 9, the gap between adjacent resonator-loaded dielectrics 3a and 3b is d, and d is a half wavelength dimension of the upper limit frequency f _max of the frequency band in which electromagnetic shielding characteristics are required. Yes. As described above, the third embodiment has the same structure as that of the first embodiment except for the joint portion between the adjacent resonator-loaded dielectrics 3a and 3b disposed in the gap between the door 1 and the door frame 2. doing.

  Next, the operation of the electromagnetic shield door according to the fourth embodiment will be described. Since the structure of the fourth embodiment is the same as that of the first embodiment except for the joint portion between the resonator-loaded dielectrics 3a and 3b arranged adjacent to the gap between the door 1 and the door frame 2, the adjacent resonator loading is performed. As with the first embodiment, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained for electromagnetic waves propagating through locations other than the junction between the dielectrics 3a and 3b.

Further, as shown in FIG. 9, in the gap between the door 1 and the door frame 2, the gap between the adjacent resonator loaded dielectrics 3a and 3b is d, so that the electromagnetic wave having a frequency of f _max or less is , It attenuates exponentially when propagating through the gap between adjacent resonator-loaded dielectrics 3a and 3b. Therefore, even in the electromagnetic wave propagating in the gap between the adjacent resonator loaded dielectrics 3a and 3b in the gap between the door 1 and the door frame 2, a broadband electromagnetic shielding characteristic can be obtained at a frequency of f _max or less. That is, according to the fourth embodiment, an electromagnetic shield door having a broadband electromagnetic shield characteristic at a frequency equal to or lower than f _max and a simple structure of a joint portion of adjacent resonator-loaded dielectrics can be realized.

  According to the fourth embodiment, since the door 1 and the door frame 2 are not in contact with each other, even when the number of times of opening and closing the door 1 is increased, the electromagnetic shielding characteristics are not deteriorated, and periodic maintenance is not required. .

  Further, according to the fourth embodiment, the frequency band in which the electromagnetic shielding characteristics can be obtained is determined by the frequency at which the conductor pattern 4 having the resonance structure arranged in the resonator-loaded dielectric 3 resonates. Therefore, it is possible to realize effective electromagnetic shielding characteristics in a high frequency band such as a GHz band or a millimeter wave band, which is relatively easy to manufacture.

  Further, according to the fourth embodiment, the Y-direction dimensions La, Lb, Lc, Ld, Le, Lf, Lg, and Lh of the conductor patterns 4a, 4b, 4c, 4d, 4e, 4f, 4g, and 4h are respectively set to frequencies. In fa, 1.5fa, 2fa, 2.5fa, 3.5fa, 4fa, 5fa, and 6.5fa, the frequency fa is obtained by dispersing the frequency to be a quarter wavelength on the resonator-loaded dielectric 3. To 7.5 fa wide electromagnetic shielding characteristics can be realized.

As mentioned above, according to the electromagnetic shielding door in Embodiment 4 of this invention, the conductive door 1, the conductive door 1 arrange | positioned at the door frame 2, and the door frame in the state which closed the door 1 In the gap between the door 2 and the door 1, a plurality of resonator-loaded dielectrics 3 are arranged so as to be in non-contact with the opposite surface along at least one of the wall surface of the door 1 and the wall surface of the door frame 2. The dielectric 3 has a conductor pattern 4 having a predetermined width on the surface and electrically connected to the door 1 or the door frame 2 in the circumferential direction of the door 1 and the door frame 2. It is set to one wavelength of 4 of the frequency within the band where the shield characteristic is required, and the gap dimension between the adjacent resonator loaded dielectrics 3a and 3b is a half wavelength of the upper limit frequency where the electromagnetic shield characteristic is required. Since it is configured as follows, the electromagnetic shielding characteristics do not deteriorate and regular maintenance is performed. Nsu is unnecessary, mainly includes an electromagnetic shielding properties in a GHz band or a high frequency band, further, it is possible to obtain an electromagnetic shielding characteristics specific to wideband frequency at frequencies below f _max, and the adjacent The structure of the junction between the resonator loaded dielectrics 3a and 3b is simplified.

Embodiment 5 FIG.
An electromagnetic shield door according to Embodiment 5 of the present invention will be described with reference to FIGS. 1 to 3 and FIG. Since FIG. 1 to FIG. 3 are the same as the electromagnetic shield door according to the first embodiment, description thereof is omitted. FIG. 10 shows a resonator loaded dielectric 3 arranged on the wall surface side of the door 1 in the gap between the door 1 and the door frame 2 according to Embodiment 5 of the present invention. It is an enlarged view of the junction part of the resonator loading dielectrics 3c and 3d which adjoin in the direction orthogonal to each other in the corner part in the gap | interval of the door frame 2, and description of each part is the same as FIG. 4 in Embodiment 1. FIG. .

  Next, the operation of the electromagnetic shield door according to the fifth embodiment will be described. In the fifth embodiment, the structure other than the joint portion between the resonator loaded dielectrics 3c and 3d adjacent in the direction orthogonal to each other at the corner portion in the gap between the door 1 and the door frame 2 is the same as that of the first embodiment. As with the first embodiment, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained for electromagnetic waves propagating through locations other than the junction between the resonator-loaded dielectrics 3a and 3b.

  In the fifth embodiment, the conductor patterns 4 arranged on the resonator-loaded dielectrics 3 c and 3 d adjacent to each other in the direction orthogonal to each other at the corner portion in the gap between the door 1 and the door frame 2 are connected by the copper foil tape 9. Therefore, there is no electrical gap between the resonator-loaded dielectrics 3c and 3d, and the resonator-loaded dielectric 3c adjacent in the direction perpendicular to each other at the corner in the gap between the door 1 and the door frame 2 is provided. 5b, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained.

  According to the fifth embodiment, since the door 1 and the door frame 2 are not in contact with each other, even when the number of times of opening and closing the door 1 is increased, it is possible to suppress the deterioration of the electromagnetic shielding characteristics in the corner portion.

  Further, according to the fifth embodiment, the frequency band in which the electromagnetic shielding characteristics can be obtained is determined by the frequency at which the conductor pattern 4 having the resonance structure arranged in the resonator-loaded dielectric 3 resonates. Therefore, it is possible to realize effective electromagnetic shielding characteristics in a high frequency band such as a GHz band or a millimeter wave band, which is relatively easy to manufacture.

  Further, according to the fifth embodiment, the Y-direction dimensions La, Lb, Lc, Ld, Le, Lf, Lg, and Lh of the conductor patterns 4a, 4b, 4c, 4d, 4e, 4f, 4g, and 4h are respectively set to frequencies. In fa, 1.5fa, 2fa, 2.5fa, 3.5fa, 4fa, 5fa, and 6.5fa, the frequency fa is obtained by dispersing the frequency to be a quarter wavelength on the resonator-loaded dielectric 3. To 7.5 fa wide electromagnetic shielding characteristics can be realized.

  As mentioned above, according to the electromagnetic shielding door in Embodiment 5 of this invention, the conductive door frame 2, the conductive door 1 arrange | positioned at the door frame 2, and the door in the state which closed the door 1 In the gap between the frame 2 and the door 1, a plurality of resonator-loaded dielectrics 3 are arranged so as to be in non-contact with the facing surface along at least one of the wall surface of the door 1 and the wall surface of the door frame 2. The loading dielectric 3 has a conductor pattern 4 having a predetermined width on the surface and electrically connected to the door 1 or the door frame 2 in the circumferential direction of the door 1 and the door frame 2, and the conductor pattern 4 has a predetermined width. Conductor patterns on the surfaces of the resonator-loaded dielectrics 3c and 3d that are set to a quarter wavelength of the frequency within the band where electromagnetic shielding characteristics are required and are adjacent to each other at the corners of the door 1 and the door frame 2 Since it is configured to electrically connect the four with a conductor, electromagnetic seal Regular maintenance properties not deteriorate is unnecessary, mainly includes an electromagnetic shielding properties in a GHz band or a high frequency band, further, it is possible to obtain an electromagnetic shielding characteristics specific to wide frequency.

Embodiment 6 FIG.
An electromagnetic shield door according to Embodiment 6 of the present invention will be described with reference to FIGS. 1 to 3 and FIG. Since FIG. 1 to FIG. 3 are the same as the electromagnetic shield door according to the first embodiment, description thereof is omitted. FIG. 11 shows a resonator loaded dielectric 3 arranged in plural on the wall surface side of the door 1 in the gap between the door 1 and the door frame 2 in Embodiment 6 of the present invention. It is an enlarged view of the junction part of the resonator loading dielectrics 3c and 3d which adjoin in the direction orthogonal to each other in the corner part in the gap | interval of the door frame 2. FIG. In FIG. 11, the resonator loaded dielectrics 3c and 3d which are adjacent to each other in a direction orthogonal to each other have a short-circuit structure by the conductor pattern 4 and the through-through hole array 5 shown in FIG. Prepare. The copper foil tape 9 is electrically connected between the conductor patterns 4 disposed on the surfaces of the resonator-loaded dielectrics 3c and 3d, and the conductive gasket 10 has a conductive property on the surface. 1 and the door frame 2 are arranged so as to fill a gap between the resonator loaded dielectrics 3c and 3d adjacent to each other in a direction orthogonal to each other at a corner portion in the gap between the door frame 2 and the door frame 2. As described above, the structure of the sixth embodiment is the same as that of the first embodiment except for the joint portion between the resonator-loaded dielectrics 3c and 3d adjacent to each other in the direction orthogonal to each other at the corner portion in the gap between the door 1 and the door frame 2. Have the same structure.

  Next, the operation of the electromagnetic shield door according to the sixth embodiment will be described. The sixth embodiment has the same structure as that of the first embodiment except for the corner portion in the gap between the door 1 and the door frame 2, so that the electromagnetic wave propagating through the portion other than the corner portion in the gap between the door 1 and the door frame 2 is prevented. As in the first embodiment, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained.

  Further, in the sixth embodiment, the conductor patterns 4 arranged in the resonator loaded dielectrics 3c and 3d adjacent to each other in the direction orthogonal to each other at the corner portion in the gap between the door 1 and the door frame 2 are the same as those in the fifth embodiment. Similarly, the copper foil tape 9 is electrically connected, and the conductor gasket 10 is disposed in the gap between the resonator loaded dielectrics 3c and 3d. Accordingly, there is no electrical gap between the resonator-loaded dielectrics 3c and 3d, and the resonator-loaded dielectrics 3c and 3d adjacent in the direction perpendicular to each other at the corner portion in the gap between the door 1 and the door frame 2 are provided. Also in the electromagnetic wave propagating through the junction between the two, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained.

  Further, in the sixth embodiment, since the conductor gasket 10 is disposed in the gap between the resonator-loaded dielectrics 3c and 3d that are adjacent to each other in the direction orthogonal to each other, the space between the resonator-loaded dielectrics 3c and 3d is spatial. Therefore, it is possible to suppress the displacement of the resonator loaded dielectrics 3c and 3d, which is likely to occur due to repeated door opening and closing operations.

  That is, according to the sixth embodiment, it is possible to suppress the deterioration of the electromagnetic shielding characteristics at the corner portion in the gap between the door 1 and the door frame 2, so that the broadband electromagnetic shielding characteristics similar to those of the first embodiment are obtained, and In addition, an electromagnetic shield door that can suppress the displacement of the resonator loaded dielectric 3 disposed at the corner portion in the gap between the door 1 and the door frame 2 can be realized.

  In the sixth embodiment, the conductor gasket 10 is disposed in the gap between the resonator loaded dielectrics 3c and 3d adjacent to each other in the direction orthogonal to each other at the corner portion in the gap between the door 1 and the door frame 2. The member disposed in the gap between the resonator loaded dielectrics 3c and 3d need not be limited to the conductor gasket 10 as long as the gap between the loaded dielectrics 3c and 3d is spatially and electrically filled. FIG. 12 shows an example in which a dielectric 11 is arranged instead of the conductor gasket 10 in FIG. FIG. 12 differs from FIG. 11 only in that a dielectric 11 is provided instead of the conductor gasket 10, and the other configuration is the same as FIG.

  Moreover, it is good also as a structure which reinforces the electrical connection of the side surface of the resonator loading dielectric material 3, and the conductive gasket 10 by arrange | positioning a conductive paint and a conductor pattern on the side surface of the resonator loading dielectric material 3. FIG.

  As described above, according to the electromagnetically shielded door according to the sixth embodiment of the present invention, the resonator loaded dielectric 3c that is adjacent to each other at the corner portion of the door 1 and the door frame 2 in the gap between the door frame 2 and the door 1 is perpendicular. In addition to the effects of the first embodiment, the corner portions of the door 1 and the door frame 2 in the gap between the door frame 2 and the door 1 are configured. In FIG. 3, there is no spatial gap between the resonator-loaded dielectrics 3c and 3d that are directly adjacent to each other, and the displacement of the resonator-loaded dielectric 3 that is likely to occur due to repeated door opening and closing operations can be suppressed. .

Embodiment 7 FIG.
An electromagnetic shield door according to Embodiment 7 of the present invention will be described with reference to FIGS. 1 to 3 and FIG. Since FIG. 1 to FIG. 3 are the same as the electromagnetic shield door according to the first embodiment, description thereof is omitted. FIG. 13 shows a resonator loaded dielectric 3 arranged on the wall surface side of the door 1 in the gap between the door 1 and the door frame 2 according to Embodiment 7 of the present invention. It is an enlarged view of the junction part of the resonator loading dielectrics 3c and 3d which adjoin in the direction orthogonal to each other in the corner part in the gap | interval of the door frame 2. FIG. In FIG. 13, the resonator loaded dielectrics 3 c and 3 d that are adjacent to each other in a direction orthogonal to each other have the short-circuit structure by the conductor pattern 4 and the through-through hole row 5 shown in FIG.

  The flexible substrate 12 is a dielectric substrate having a foldable characteristic, and a plurality of conductor patterns are arranged on one surface of the flexible substrate 12 in the same manner as the flexible substrate 12 of the third embodiment. The conductor patterns 4 respectively disposed on the resonator loaded dielectrics 3c and 3d are electrically connected. As described above, the seventh embodiment has the same structure as that of the first embodiment except for the joint portion between the resonator-loaded dielectrics 3c and 3d adjacent in the direction perpendicular to each other at the corner portion in the gap between the door 1 and the door frame 2. Have the same structure.

  Next, the operation of the electromagnetic shield door according to the seventh embodiment will be described. Since the structure of the seventh embodiment is the same as that of the first embodiment except for the corner portion in the gap between the door 1 and the door frame 2, the electromagnetic wave propagating through the portion other than the corner portion in the gap between the door 1 and the door frame 2 is prevented. As in the first embodiment, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained.

  Further, in the seventh embodiment, the conductor patterns 4 arranged in the resonator loaded dielectrics 3c and 3d adjacent to each other in the direction orthogonal to each other at the corner portion in the gap between the door 1 and the door frame 2 are formed on the flexible substrate 12. Similar to the fifth embodiment, they are electrically connected by the arranged conductor pattern. Therefore, there is no electrical gap between the resonator-loaded dielectrics 3c and 3d, and the electromagnetic wave propagating through the corner portion of the gap between the door 1 and the door frame 2 is also a broadband electromagnetic shield shown in FIG. Characteristics are obtained.

  Further, in the seventh embodiment, since one flexible substrate is used at one place where the resonator-loaded dielectrics 3c and 3d are adjacent to each other in a direction orthogonal to each other, they are arranged on the resonator-loaded dielectrics 3c and 3d, respectively. Electrical connection of the conductor pattern 4 can be easily performed. That is, according to the seventh embodiment, the resonator-loaded dielectric having broadband electromagnetic shielding characteristics similar to those of the first embodiment and adjacent in the direction perpendicular to each other at the corner portion in the gap between the door 1 and the door frame 2 An electromagnetic shield door with a simple structure of the joint portion between 3c and 3d can be realized.

  As described above, according to the electromagnetically shielded door according to the seventh embodiment of the present invention, the resonator loaded dielectric 3c that is adjacent to each other at the corner portion of the door 1 and the door frame 2 in the gap between the door frame 2 and the door 1 is perpendicular. In addition to the effects of the first embodiment, the conductors that electrically connect the conductor patterns 4 on the respective surfaces 3d and 3d are arranged on the flexible substrate 12, so that the door frame 2 and the door 1 Electrical connection of the conductor patterns 4 respectively disposed in the resonator loaded dielectrics 3c and 3d that are adjacent to each other at the corners of the door 1 and the door frame 2 in the gap can be easily performed.

Embodiment 8 FIG.
An electromagnetic shield door according to an eighth embodiment of the present invention will be described with reference to FIGS. 1 to 3 and FIG. Since FIG. 1 to FIG. 3 are the same as the electromagnetic shield door according to the first embodiment, description thereof is omitted. FIG. 14 shows a resonator loaded dielectric 3 arranged in plural on the wall surface side of the door 1 in the gap between the door 1 and the door frame 2 in Embodiment 8 of the present invention. It is an enlarged view of the junction part of the resonator loading dielectrics 3c and 3d which adjoin in the direction orthogonal to each other in the corner part in the gap | interval of the door frame 2. FIG. In FIG. 14, the gap between the resonator-loaded dielectrics 3c and 3d is d, and d is a half wavelength dimension of the upper limit frequency f _max of the frequency band in which electromagnetic shielding characteristics are required. Thus, in the eighth embodiment, the structure other than the joint portion between the resonator-loaded dielectrics 3c and 3d adjacent in the direction orthogonal to each other at the corner portion in the gap between the door 1 and the door frame 2 is the same as that of the first embodiment. Have the same structure.

  Next, the operation of the electromagnetic shield door according to the eighth embodiment will be described. In the eighth embodiment, since the structure other than the corner portion in the gap between the door 1 and the door frame 2 is the same as that in the first embodiment, the electromagnetic wave propagating through the portion other than the corner portion in the gap between the door 1 and the door frame 2 is prevented. As in the first embodiment, the broadband electromagnetic shielding characteristics shown in FIG. 5 can be obtained.

Further, as shown in FIG. 14, in the corner portion in the gap between the door 1 and the door frame 2, the gap between the resonator loaded dielectrics 3c and 3d is d, so that the electromagnetic wave having a frequency of f _max or less. Is exponentially attenuated when propagating through the gap between the resonator loaded dielectrics 3c and 3d. Therefore, even in the electromagnetic wave propagating through the gap between the resonator loaded dielectrics 3c and 3d at the corner portion in the gap between the door 1 and the door frame 2, it has a broadband electromagnetic shielding characteristic at a frequency of f _max or less, and An electromagnetic shield door having a simple structure of the joint portion between the adjacent resonator-loaded dielectrics 3c and 3d can be realized.

  According to the eighth embodiment, since the door 1 and the door frame 2 are not in contact with each other, even when the number of times of opening and closing the door 1 increases, the electromagnetic shielding characteristics do not deteriorate, and periodic maintenance is not necessary. .

  Further, according to the eighth embodiment, the frequency band in which electromagnetic shielding characteristics can be obtained is determined by the frequency at which the conductor pattern 4 having the resonance structure arranged in the resonator-loaded dielectric 3 resonates. Therefore, it is possible to realize effective electromagnetic shielding characteristics in a high frequency band such as a GHz band or a millimeter wave band, which is relatively easy to manufacture.

  Further, according to the eighth embodiment, the Y-direction dimensions La, Lb, Lc, Ld, Le, Lf, Lg, and Lh of the conductor patterns 4a, 4b, 4c, 4d, 4e, 4f, 4g, and 4h are respectively set to frequencies. In fa, 1.5fa, 2fa, 2.5fa, 3.5fa, 4fa, 5fa, and 6.5fa, the frequency fa is obtained by dispersing the frequency to be a quarter wavelength on the resonator-loaded dielectric 3. To 7.5 fa wide electromagnetic shielding characteristics can be realized.

As described above, according to the electromagnetically shielded door according to the eighth embodiment of the present invention, the conductive door 1, the conductive door 1 disposed on the door frame 2, and the door frame in a state in which the door 1 is closed. In the gap between the door 2 and the door 1, a plurality of resonator-loaded dielectrics 3 are arranged so as to be in non-contact with the opposite surface along at least one of the wall surface of the door 1 and the wall surface of the door frame 2. The dielectric 3 has a conductor pattern 4 having a predetermined width on the surface and electrically connected to the door 1 or the door frame 2 in the circumferential direction of the door 1 and the door frame 2. The gap dimension between the resonator-loaded dielectrics 3c and 3d, which are set to a quarter wavelength of the frequency within the band where the shield characteristic is required and is adjacent to each other at the corners of the door 1 and the door frame 2, is electromagnetic Configured so that the shield characteristic is less than half the wavelength of the upper limit frequency required Were so, routine maintenance electromagnetic shielding characteristics do not deteriorate is unnecessary, mainly have electromagnetic shielding properties in a GHz band or a high frequency band, further, specializing in wide frequency at frequencies below f _max Electromagnetic shielding characteristics can be obtained, and the structure of the joint portion between the resonator-loaded dielectrics 3c and 3d that are adjacent to each other at the corner portions of the door 1 and the door frame 2 is simplified.

  In the present invention, within the scope of the invention, any combination of the embodiments, or any modification of any component in each embodiment, or omission of any component in each embodiment is possible. .

  DESCRIPTION OF SYMBOLS 1 Door, 2 Door frame, 3, 3a-3d Resonator loading dielectric, 4, 4a-4h Conductor pattern, 5, 5a-5d Through-through hole row, 6 Conductive gasket, 7 Hinge, 8 Opening / closing lever, 9 Copper Foil tape, 10 conductor gasket, 11 dielectric, 12 flexible substrate.

Claims (5)

A conductive door frame;
A conductive door disposed on the door frame;
In the gap between the door frame and the door when the door is closed, a plurality of dielectrics are arranged so as to be in non-contact with the opposing surface along at least one of the wall surface of the door and the wall surface of the door frame. And
The dielectric has a predetermined width on the surface and a conductive pattern electrically connected to the door or the door frame in the circumferential direction of the door and the door frame,
The predetermined width of the conductor pattern is set to a quarter wavelength of a frequency within a band where electromagnetic shielding characteristics are required;
An electromagnetic shield door, wherein conductor patterns on the surfaces of adjacent dielectrics are electrically connected by a conductor. The electromagnetic shield door according to claim 1, wherein a conductor or a dielectric is disposed in a gap between adjacent dielectrics. Conductive paint or conductor pattern is disposed on the side surface of the dielectric, and the conductive paint or conductor pattern disposed on the side surface of the dielectric and the conductor or dielectric disposed in the gap between the dielectrics are electrically connected. The electromagnetic shielding door according to claim 2, wherein the electromagnetic shielding door is connected. The electromagnetic shield door according to any one of claims 1 to 3, wherein a conductor that electrically connects the conductor patterns is disposed on a flexible substrate. A conductive door frame;
A conductive door disposed on the door frame;
In the gap between the door frame and the door when the door is closed, a plurality of dielectrics are arranged so as to be in non-contact with the opposing surface along at least one of the wall surface of the door and the wall surface of the door frame. And
The dielectric has a predetermined width on the surface and a conductive pattern electrically connected to the door or the door frame in the circumferential direction of the door and the door frame,
The predetermined width of the conductor pattern is set to a quarter wavelength of a frequency within a band where electromagnetic shielding characteristics are required;
The electromagnetic shielding door, wherein a gap between adjacent dielectrics has a half wavelength or less of an upper limit frequency at which the electromagnetic shielding characteristics are required.

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