JPH02170599A - Radio wave absorbing wall - Google Patents
Radio wave absorbing wallInfo
- Publication number
- JPH02170599A JPH02170599A JP32376588A JP32376588A JPH02170599A JP H02170599 A JPH02170599 A JP H02170599A JP 32376588 A JP32376588 A JP 32376588A JP 32376588 A JP32376588 A JP 32376588A JP H02170599 A JPH02170599 A JP H02170599A
- Authority
- JP
- Japan
- Prior art keywords
- radio wave
- magnetic
- wall
- wave absorbing
- field component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000463 material Substances 0.000 claims abstract description 24
- 230000005684 electric field Effects 0.000 claims abstract 3
- 238000010521 absorption reaction Methods 0.000 claims description 39
- 239000000696 magnetic material Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000004570 mortar (masonry) Substances 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 239000004566 building material Substances 0.000 claims description 5
- 239000011435 rock Substances 0.000 claims description 4
- 229910052573 porcelain Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 27
- 230000006866 deterioration Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、電波吸収壁に関し特に高層建築物の外壁に用
いられ、ＶＨＦ、ＵＨＦの不要反射電波障害を防止する
電波吸収壁に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a radio wave absorbing wall, and particularly to a radio wave absorbing wall that is used for the outer wall of a high-rise building and prevents unnecessary reflected radio wave interference of VHF and UHF.
（従来の技術）
現在゛、建物や鉄塔等が電波反射体となり、電波を利用
する面での信頼性を高める上で問題化されている。特に
、高層建築物による不要反射電波がテレビ放送電波を乱
し、画面にゴースト障害を生じさせる等、電波公害がク
ローズアップされてきている。この対策として、特公昭
５５−１：１６００号公報および特公昭５５−４９７９
８公報に開示された電波吸収壁が提案されており、電波
吸収特性を有するフェライト等の磁性体を例えば鉄筋、
金属、金属板等の電波反射骨材を埋設させたコンクリー
ト、モルタル等の建築材の表面又は内部に配置し、電波
吸収特性をもたせたカーテンウオール（ＰＣ板）が考え
られている。この電波吸収壁によって高層建築物による
不要反射電波障害防止において大きな効果が得られてい
る。これら電波吸収壁は、従来の技術範囲においては電
波吸収特性を低下させないために、少なくとも複数個の
磁性体、例えば１００ｍｍ Ｘ １１００ａ程度のタイ
ル状フェライトを、到来電波の磁界成分の方向には互い
に密接し固着させる必要があった。具体的には、第３図
〜第６図に示す配列が提案されている。各図のイは正面
から見た斜視図、口は断面図である。(Prior Art) Currently, buildings, steel towers, etc. act as radio wave reflectors, which poses a problem in improving the reliability of radio wave usage. In particular, radio wave pollution has been attracting attention, with unnecessary reflected radio waves from high-rise buildings disturbing television broadcast waves and causing ghost problems on screens. As a countermeasure for this, Japanese Patent Publication No. 55-1:1600 and Special Publication No. 55-4979
A radio wave absorbing wall disclosed in Publication No. 8 has been proposed, in which a magnetic material such as ferrite having radio wave absorbing properties is used, for example, as a reinforcing steel,
A curtain wall (PC board) is being considered in which a radio wave-reflecting aggregate such as a metal or a metal plate is placed on or inside a building material such as concrete or mortar to have radio wave absorption characteristics. These radio wave absorbing walls are highly effective in preventing unnecessary reflected radio wave interference caused by high-rise buildings. These radio wave absorption walls are constructed using at least a plurality of magnetic materials, for example, tile-shaped ferrites of about 100 mm x 1100 mm, closely spaced in the direction of the magnetic field component of the incoming radio waves, in order not to reduce the radio wave absorption characteristics within the conventional technology. It needed to be fixed. Specifically, the arrangements shown in FIGS. 3 to 6 have been proposed. In each figure, A is a perspective view seen from the front, and the opening is a cross-sectional view.
第３図は、金属板等の反射体３２に複数個のフェライト
板３１を直接に固着させた電波吸収壁を示し、第４図は
、鉄筋、金網、金属板等の金属骨材（反射体）４２にコ
ンクリート、又はモルタル４３等の補強材を打込んだ建
築部材の表面に複数個のフェライト板４１を埋込み、貫
通孔４４にナイロン線、鉄線等の芯線４５を挿通させ、
この芯線４５を骨材その他の基部に固定し得るようにし
、剥離に対する安全性を高めた電波吸収壁を示し、第５
図は、複数個のフェライト板５１を金網等の反射板５２
を含むコンクリート、モルタル５３に埋設させた電波吸
収壁を示し、第６図は磁器タイル、岩石等の外装材６６
、フェライト板６１．電波反射体６２を含むコンクリー
ト板６７を埋設させて組合わせた電波吸収壁を示してい
る。いずれも磁界成分の方向には連続して密着させる構
造をとる。これらの電波吸収壁によって高層建築物によ
る不要反射電波障害防止において大きな効果が得られて
いる。FIG. 3 shows a radio wave absorption wall in which a plurality of ferrite plates 31 are directly fixed to a reflector 32 such as a metal plate, and FIG. ) A plurality of ferrite plates 41 are embedded in the surface of a building component in which reinforcing material such as concrete or mortar 43 is poured into 42, and a core wire 45 such as a nylon wire or iron wire is inserted into the through hole 44,
This core wire 45 can be fixed to the base of aggregate or other materials, and shows a radio wave absorbing wall with improved safety against peeling.
In the figure, a plurality of ferrite plates 51 are connected to a reflective plate 52 such as a wire mesh.
Fig. 6 shows a radio wave absorbing wall buried in concrete or mortar 53 containing
, ferrite plate 61. A radio wave absorbing wall is shown in which a concrete plate 67 including a radio wave reflector 62 is embedded. Both have a structure in which they are brought into close contact continuously in the direction of the magnetic field component. These radio wave absorbing walls have been highly effective in preventing unnecessary reflected radio wave interference caused by high-rise buildings.
（発明が解決しようとする課題）
しかしながら、上記ＰＣパネルとして特に最近の大型化
した高層建築物においては、フェライト板の前に配置さ
れる外装材を美観上から岩石や磁器タイルで構成するこ
とが要求され、その場合十分な強度を保持する必要があ
り、そのためには外装材をある程度厚くする必要がある
。尚、フェライト板の前に外装材を装着することにより
、電波吸収特性は大きく変化し劣化する。例えばＷＸ−
２０Ｄ（内径８．６ ｍｍ 外径１９．８ ｍｍ ）
同軸管による測定でコンクリート・フェライト・外装材
の３層構造を積層して形成した試料を用い、外装材の厚
さをθ〜２５ｍｍ迄変化させた場合の評価を行った結果
、第７図のような特性が得られ、電波吸収特性の共振点
が低周波に移動する。さらに例えば２０ｄＢ以上の反射
減衰量の周波数範囲中は、約７００ＭＩＩＺ強から１０
０ＭＨｚ程度に大巾に劣化する。(Problem to be Solved by the Invention) However, in the case of the above-mentioned PC panels, especially in recent large-scale high-rise buildings, the exterior material placed in front of the ferrite board may not be made of rock or porcelain tiles for aesthetic reasons. In this case, it is necessary to maintain sufficient strength, and for this purpose, the exterior material must be thick to a certain extent. Note that by attaching a sheathing material in front of the ferrite plate, the radio wave absorption characteristics are greatly changed and deteriorated. For example, WX-
20D (inner diameter 8.6 mm outer diameter 19.8 mm)
Using a sample formed by laminating a three-layer structure of concrete, ferrite, and exterior material, measurements were conducted using a coaxial tube, and as a result of evaluating the case where the thickness of the exterior material was varied from θ to 25 mm, the results shown in Figure 7. These characteristics are obtained, and the resonance point of the radio wave absorption characteristics moves to lower frequencies. Furthermore, for example, in the frequency range with a return loss of 20 dB or more, from approximately 700 MIIZ to 10
Significant deterioration occurs to around 0MHz.
尚、ＤＩはコンクリートの厚さを表わし、Ｄ２はフェラ
イトの厚さを表わし、Ｄ３は外装材の厚さを表わす。Note that DI represents the thickness of concrete, D2 represents the thickness of ferrite, and D3 represents the thickness of the exterior material.
本発明は、これらの問題を解決するためのもので、例え
ば外装材の厚さが厚い場合の特性劣化を回復させ電波吸
収特性を必要とされる周波数範囲に制御することができ
、優れた電波吸収壁を提供することを目的とする。The present invention is intended to solve these problems. For example, it is possible to recover the characteristic deterioration caused by the thick exterior material, control the radio wave absorption characteristics to the required frequency range, and achieve excellent radio wave absorption characteristics. The purpose is to provide an absorbent wall.
（課題を解決するための手段）
本発明は、前記問題点を解決するために、磁界成分の方
向に複数個のフェライト板等の磁性体が連続して配列し
ている部分に互いのフェライト板を密着させず、わずか
な隙間（スリット）を設けることにより磁気特性を制御
することができ、鉄筋、金網、金属板等の電波反射体を
埋設させてコンクリート、モルタル等建物の外壁となる
建築材料に電波吸収特性を有するフェライト板等の磁性
体板も埋設させ、かつ前記磁性体板の表面に外装材を施
した電波吸収壁において、必要とされる周波数範囲にお
いて電波吸収特性が十分得られるように工夫したことで
ある。従って、本発明は第８図（イ）に示すような磁界
成分の方向に配列された複数個のフェライト板等の磁性
体８１間にわずかな隙間（スリット）８７を設けたこと
に特徴がある。また、複数個の磁性体が一部密着させて
配列され、わずかな隙間（スリット）は部分的に設けら
れてもよい。さらに、第８図（ロ）に示すような複数個
のフェライト板等の磁性体８２間に設けるわずかな隙間
（スリット）８７に塩ビ等のプラスチックや建築材料と
して有効なセラミックス等の薄板８８をはさみ、隙間の
寸法粒度を上げることにも特徴がある。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides an arrangement in which a plurality of magnetic bodies such as ferrite plates are arranged continuously in the direction of a magnetic field component. The magnetic properties can be controlled by creating small gaps (slits) without making them stick together, and by embedding radio wave reflectors such as reinforcing bars, wire mesh, and metal plates, building materials such as concrete and mortar are used as the exterior walls of buildings. In a radio wave absorption wall in which a magnetic plate such as a ferrite plate having radio wave absorption properties is also embedded in the wall, and an exterior material is applied to the surface of the magnetic plate, sufficient radio wave absorption properties can be obtained in the required frequency range. This is something we have devised. Therefore, the present invention is characterized in that a slight gap (slit) 87 is provided between a plurality of magnetic bodies 81 such as ferrite plates arranged in the direction of the magnetic field component as shown in FIG. 8(A). . Alternatively, a plurality of magnetic bodies may be arranged in close contact with each other, with slight gaps (slits) being partially provided. Furthermore, a thin plate 88 of plastic such as PVC or ceramics that is effective as a building material is inserted into a small gap (slit) 87 between a plurality of magnetic bodies 82 such as ferrite plates as shown in FIG. 8(b). , it is also characterized by increasing the dimensional granularity of the gaps.
（作 用）
以上のような構成を有する本発明によれば、到来電波の
磁界成分の方向に配列された複数個のフェライト板等の
磁性体間にわずかな隙間（スリット）を設けることによ
り、例えば第９図に示すように周波数に対する磁気特性
が変化する作用をとらえ、電波吸収特性の周波数依存性
を制御できる。第９図はフェライトの磁気特性である複
素透磁率（μ、＝μ′−ｊμ”、）のＷＸ−２０Ｄ同軸
による測定値であり、隙間を０．１．２ｍｍ設けた時の
変化を示している。したがって、本発明は、前記外装材
が厚くなったときに電波吸収特性が低周波側に移動し必
要周波数で十分な特性が得られない問題点を複数個のフ
ェライト板等の磁性体間にわずかな隙間（スリット）を
あけることにより、磁気特性を制御することにより解決
でき、優れた電波吸収特性を有する電波吸収壁を提供で
きる。(Function) According to the present invention having the above configuration, by providing a slight gap (slit) between the magnetic bodies such as a plurality of ferrite plates arranged in the direction of the magnetic field component of the incoming radio wave, For example, as shown in FIG. 9, it is possible to control the frequency dependence of radio wave absorption characteristics by capturing the effect that magnetic characteristics change with respect to frequency. Figure 9 shows the measured value of the complex magnetic permeability (μ, = μ'-jμ'',), which is the magnetic property of ferrite, using a WX-20D coaxial, and shows the change when a gap of 0.1.2 mm is provided. Therefore, the present invention solves the problem that when the exterior material becomes thick, the radio wave absorption characteristics shift to the lower frequency side and sufficient characteristics cannot be obtained at the required frequency, by combining magnetic materials such as multiple ferrite plates. This can be solved by controlling the magnetic properties by creating a small gap (slit) in the wall, and it is possible to provide a radio wave absorption wall with excellent radio wave absorption properties.
（実施例）
以下、本発明の実施例を図面に基づいて説明する。第１
図は本発明の一実施例の電波吸収壁を示す構造図である
。（イ）は正面から見た斜視図、（ロ）は断面図である
。鉄筋１２を埋設させたコンクリート１３にフェライト
板１１ 、１００ｍｍ ｘ １０１００ｍｍＸ１Ｏを隙
間なし、０．２ｍｍ 、 ０．５ｍｍ 、 １．Ｏｍｍ
。(Example) Hereinafter, an example of the present invention will be described based on the drawings. 1st
The figure is a structural diagram showing a radio wave absorption wall according to an embodiment of the present invention. (A) is a perspective view seen from the front, and (B) is a sectional view. Ferrite plates 11, 100 mm x 10100 mm x 10, are placed in the concrete 13 in which the reinforcing bars 12 are buried, with no gaps, 0.2 mm, 0.5 mm, 1. Omm
.
２．０＋ｎｍ 、 ５．０１１１０１ 、６．０［［１
１１１の磁気的な隙間を設けて配列し各々埋設させ、該
フェライト板の間には非磁性体として塩ビ板１８（塩化
ビニル）をはさんでわずかな磁気的な隙間（スリット）
を形成させており、かつ前記フェライト板の前面に岩石
板１６（話電率ε′＝６）厚ざ２２ｍｍを配設した電波
吸収壁７種類を製作した。これらの電波吸収壁の電波吸
収特性を測定した結果、第２図が得られ、従来の電波吸
収壁スリットなしの場合、約１５０ＭＩｌｚ以上の周波
数で著しく特性が悪くなっているが、スリット１ｍｍで
ＴＶ周波数のＶＨＦ帯で１４ｄＢ以上の反射減衰量が得
られている。Ｄｌはフェライト裏面と反射体部面の間の
コンクリート層の厚さを表し、Ｄ２はフェライト厚さを
表し、Ｄ３は外装材の厚さを表わす。2.0+nm, 5.011101, 6.0[[1
111 magnetic gaps are provided and each is arranged and buried, and a PVC plate 18 (vinyl chloride) as a non-magnetic material is sandwiched between the ferrite plates to form a slight magnetic gap (slit).
Seven types of radio wave absorbing walls were manufactured in which a rock plate 16 (call rate ε'=6) and a thickness of 22 mm was arranged in front of the ferrite plate. As a result of measuring the radio wave absorption characteristics of these radio wave absorption walls, Figure 2 was obtained.In the case of the conventional radio wave absorption wall without slits, the characteristics deteriorate significantly at frequencies above about 150 MIlz, but with a slit of 1 mm, the TV A return loss of 14 dB or more was obtained in the VHF frequency band. Dl represents the thickness of the concrete layer between the back surface of the ferrite and the reflector part surface, D2 represents the ferrite thickness, and D3 represents the thickness of the exterior material.
尚、スリットが０．２ｍｍ未満ではスリットなしと比べ
ほとんど改善されず、またスリット６ｍｍ以上では全て
ｌ０ｄＢ以下の反射減衰量となり有効な電波吸収特性が
得られない。従って、本発明の複数個のフェライト板間
のわずかな隙間は１００ｍｍ長さに対し、０．２〜０．
５ ｍｍで有効であり、望ましくは０．３〜２ ｍｍの
間にある場合に優れた電波吸収性能を発揮する。これら
の隙間寸法について磁性体連続部と隙間の比率で表現す
ると、本発明で言うビニル）が充填される。If the slit is less than 0.2 mm, there will be little improvement compared to the case without a slit, and if the slit is 6 mm or more, the return loss will be less than 10 dB and no effective radio wave absorption characteristics will be obtained. Therefore, the slight gap between the plurality of ferrite plates of the present invention is 0.2 to 0.0 mm for a length of 100 mm.
It is effective when the thickness is 5 mm, and preferably between 0.3 and 2 mm, exhibiting excellent radio wave absorption performance. When expressing these gap dimensions in terms of the ratio of the continuous magnetic material part to the gap, it is filled with vinyl as used in the present invention.
（発明の効果）
以上説明したように、本発明によれば、電波吸収特性を
有する複数個のフェライト等の磁性体板にわずかな隙間
を設けることにより、磁気特性の周波数分散を制御する
ことができ、その結果電波吸収特性の制御が可能となっ
た。このことにより、例えば外装材の厚さが厚い電波吸
収壁において、従来のフェライト等の磁性体板を密着さ
せて配列した場合、低周波に良好な電波吸収特性となり
、高周波で電波吸収特性の劣化がおこる点を改善し、必
要な周波数に合わせた優れた電波吸収特性が得られる。(Effects of the Invention) As explained above, according to the present invention, it is possible to control the frequency dispersion of magnetic properties by providing a slight gap between a plurality of magnetic plates such as ferrite having radio wave absorption properties. As a result, it became possible to control the radio wave absorption characteristics. As a result, for example, in a radio wave absorption wall with a thick exterior material, if conventional magnetic plates such as ferrite are arranged closely together, the radio wave absorption properties will be good at low frequencies, but the radio wave absorption properties will deteriorate at high frequencies. This improves the problem of radio wave absorption and provides excellent radio wave absorption characteristics tailored to the required frequency.
高層建築物に適した美観、強度共に優れる外装材を有し
、電波吸収特性に優れた電波吸収壁を提供できる。It has an exterior material with excellent appearance and strength suitable for high-rise buildings, and can provide a radio wave absorption wall with excellent radio wave absorption properties.
第１図（イ）及び（ロ）は、本発明の一実施例の電波吸
収壁を示す正面斜視図及び断面図、第２図は本実施例の
電波吸収壁の電波吸収特性を示す図、第３図、第４図、
第５図、第６図は従来の電波吸収壁の正面斜視図及び横
断面図、第７図は外装材の厚さに変化に対する電波吸収
特性の変化を示す図、第８図は磁性体間にわずかな隙間
（スリット）を設けた構造図、第９図は磁性体間にわず
かな隙間を設けた場合の磁気特性の変化を示す図である
。
１１、３１．４１．５１．６１．８１・・・・フェライ
ト１２、３２．４２．５２．６２・・・・電波反射体１
３、４３．５３．６３・・・・コンクリート又はモルタ
ル４４・・・・貫通孔
４５・・・・芯線
１６、６６・・・ 外装材
１７、８７・・・・わずかな隙間（スリット）ｔａ、
ａａ・・・・塩ビ等の薄板FIGS. 1(a) and (b) are a front perspective view and a sectional view showing a radio wave absorption wall according to an embodiment of the present invention, FIG. 2 is a diagram showing radio wave absorption characteristics of the radio wave absorption wall according to this embodiment, Figure 3, Figure 4,
Figures 5 and 6 are a front perspective view and a cross-sectional view of a conventional radio wave absorption wall, Figure 7 is a diagram showing changes in radio wave absorption characteristics due to changes in the thickness of the exterior material, and Figure 8 is a diagram showing the relationship between magnetic materials. FIG. 9 is a diagram showing a structure in which a slight gap (slit) is provided between the magnetic bodies, and a diagram showing changes in magnetic properties when a slight gap is provided between magnetic bodies. 11, 31.41.51.61.81... Ferrite 12, 32.42.52.62... Radio wave reflector 1
3, 43.53.63... Concrete or mortar 44... Through hole 45... Core wire 16, 66... Exterior material 17, 87... Slight gap (slit) ta,
aa... Thin plate such as PVC
Claims (10)
不連続となる如く間隔をあけて配設し、磁界成分の方向
に磁性体各々を１つの磁性体の磁界成分方向の長さの０
．２〜５．０％の磁気的な隙間をあけて結合させたこと
を特徴とする電波吸収壁。(1) A plurality of magnetic bodies are disposed at intervals so as to be discontinuous in the direction of the electric field component of an incoming radio wave, and each magnetic body is placed in the direction of the magnetic field component by the length of one magnetic body in the direction of the magnetic field component. Sano 0
．． A radio wave absorbing wall characterized by being bonded with a magnetic gap of 2 to 5.0%.
材料の上に配設されていることを特徴とする、請求項１
記載の電波吸収壁。(2) Claim 1, wherein the magnetic body is disposed on a radio wave reflective material such as a metal plate, wire mesh, or reinforcing bar.
Radio wave absorption wall as described.
材料を埋没させて、コンクリート，モルタル等の建築部
材の表面、または内部に埋没させていることを特徴とす
る、請求項１記載の電波吸収壁。(3) Claim 1, wherein the magnetic material is embedded in a radio wave reflective material such as a reinforcing bar, a wire mesh, or a metal plate, and is embedded in the surface or inside of a building member such as concrete or mortar. Radio wave absorption wall as described.
材料を埋没させて、コンクリート，モルタル等の建物外
壁となる建築材料内部、または表面に埋没させて、かつ
前記磁性体の表面に岩石、磁器タイル等の表面外壁材を
施したことを特徴とする、請求項１記載の電波吸収壁。(4) The magnetic material is buried inside or on the surface of a building material such as concrete or mortar, which becomes the outer wall of the building, by burying a radio wave reflective material such as a reinforcing bar, a wire mesh, or a metal plate, and the surface of the magnetic material is 2. The radio wave absorbing wall according to claim 1, wherein a surface outer wall material such as rock or porcelain tile is applied to the wall.
とする請求項１記載の電波吸収壁。(5) The radio wave absorbing wall according to claim 1, wherein the gap is filled with a non-magnetic material.
不連続となる如く間隔をあけて配設し、磁界成分の方向
に一部は連続して結合し、一部は磁性体連続部の長さの
０．２〜５．０％の磁気的な隙間をあけて結合させたこ
とを特徴とする電波吸収壁。(6) A plurality of magnetic bodies are disposed at intervals so as to be discontinuous in the direction of the electric field component of the incoming radio wave, some are connected continuously in the direction of the magnetic field component, and some are magnetic A radio wave absorbing wall characterized in that the continuous portions are bonded with a magnetic gap of 0.2 to 5.0% of the length.
材料の上に配設されていることを特徴とする、請求項２
記載の電波吸収壁。(7) Claim 2, wherein the magnetic body is disposed on a radio wave reflective material such as a metal plate, wire mesh, or reinforcing bar.
Radio wave absorption wall as described.
材料を埋没させて、コンクリート，モルタル等の建築部
材の表面、又は内部に埋没させていることを特徴とする
、請求項２記載の電波吸収壁。(8) Claim 2, wherein the magnetic material is embedded in a radio wave reflecting material such as a reinforcing bar, a wire mesh, or a metal plate, and is embedded in the surface or inside of a building member such as concrete or mortar. Radio wave absorption wall as described.
材料を埋没させて、コンクリート，モルタル等の建物外
壁となる建築材料内部、又は表面に埋没させて、かつ前
記磁性体の表面に岩石，磁器タイル等の表面外壁材を施
したことを特徴とする、請求項２記載の電波吸収壁。(9) The magnetic material is buried inside or on the surface of a building material such as concrete or mortar that becomes the outer wall of the building by burying a radio wave reflective material such as a reinforcing bar, a wire mesh, or a metal plate, and the surface of the magnetic material is 3. The radio wave absorbing wall according to claim 2, wherein a surface outer wall material such as rock or porcelain tile is applied to the wall.
徴とする請求項２記載の電波吸収壁。(10) The radio wave absorbing wall according to claim 2, wherein the gap is filled with a non-magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63323765A JP2582632B2 (en) | 1988-12-23 | 1988-12-23 | Radio wave absorption wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63323765A JP2582632B2 (en) | 1988-12-23 | 1988-12-23 | Radio wave absorption wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02170599A true JPH02170599A (en) | 1990-07-02 |
| JP2582632B2 JP2582632B2 (en) | 1997-02-19 |
Family
ID=18158375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63323765A Expired - Lifetime JP2582632B2 (en) | 1988-12-23 | 1988-12-23 | Radio wave absorption wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2582632B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0485792U (en) * | 1990-11-29 | 1992-07-24 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52112746U (en) * | 1976-02-20 | 1977-08-26 | ||
| JPS5513600A (en) * | 1978-06-22 | 1980-01-30 | Bose Corp | Acoustic amplifier |
| JPS6366998A (en) * | 1986-09-08 | 1988-03-25 | フジタ工業株式会社 | Shaped ferrite member for absorbing electric wave |
| JPH0230200A (en) * | 1988-07-20 | 1990-01-31 | Inax Corp | Wave-absorbing wall body |
-
1988
- 1988-12-23 JP JP63323765A patent/JP2582632B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52112746U (en) * | 1976-02-20 | 1977-08-26 | ||
| JPS5513600A (en) * | 1978-06-22 | 1980-01-30 | Bose Corp | Acoustic amplifier |
| JPS6366998A (en) * | 1986-09-08 | 1988-03-25 | フジタ工業株式会社 | Shaped ferrite member for absorbing electric wave |
| JPH0230200A (en) * | 1988-07-20 | 1990-01-31 | Inax Corp | Wave-absorbing wall body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0485792U (en) * | 1990-11-29 | 1992-07-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2582632B2 (en) | 1997-02-19 |
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