JPS6048294U

JPS6048294U - Radio wave absorbing plate

Info

Publication number: JPS6048294U
Application number: JP11862784U
Authority: JP
Inventors: 博太田; 水谷　和躬; 財部　毅; 隆成寺川
Original assignee: 株式会社トキメック
Priority date: 1984-07-31
Filing date: 1984-07-31
Publication date: 1985-04-04

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案に係る電波吸収板体の第１実施例を示す
部分平面図、第２図は第１図の■−■線に沿った断面図
、第３図は第２実施例を示す断面図、第４図は第３実施
例を示す断面図、第５図は本考案に係る電波吸収板の応
用例を示す説明図、第６図ないし第８図はそれぞれ従来
技術による電波吸収板を示す断面図、第９図は第８図の
作用を説明するベクトル図である。１・・・一端面を形成する誘電体板、２．　３．　４・
・・他の誘電体板、５・・・他端面を形成する誘電体板
、６・・・誘電体板および他の誘電体板の実施例におけ
る一構成要素である多孔質部材としての発泡ポリスチロ
ール、７・・・発泡ポリスチロールに混入された粒状も
しくは粉末状のカーボンなどの電波減衰部材、８・・・
ポリカーボネートなどの合成樹脂の薄膜、９・・・電波
反射板。Fig. 1 is a partial plan view showing the first embodiment of the radio wave absorbing plate according to the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 shows the second embodiment. 4 is a sectional view showing the third embodiment, FIG. 5 is an explanatory view showing an application example of the radio wave absorbing plate according to the present invention, and FIGS. 6 to 8 are respectively showing radio wave absorption according to the prior art. FIG. 9, which is a sectional view showing the plate, is a vector diagram explaining the action of FIG. 1... A dielectric plate forming one end surface, 2. 3. 4.
. . . Other dielectric plate, 5 . . . Dielectric plate forming the other end surface, 6 . . . Foamed polyester as a porous member that is a component in the embodiment of the dielectric plate and other dielectric plates. Styrofoam, 7... Radio wave attenuating material such as granular or powdered carbon mixed into expanded polystyrene, 8...
Thin film of synthetic resin such as polycarbonate, 9...Radio wave reflecting plate.

Claims

[Scope of utility model registration request]

(1) Consisting of multiple dielectric plates with relatively large dielectric loss and different permittivity, each of these dielectric plates has a dielectric constant that gradually decreases from one side toward the depths. A laminated dielectric plate arranged and laminated such that the dielectric constant is approximately 1 is used for the dielectric plate located on one side, and the dielectric plate on the one side is A radio wave absorbing plate body characterized by integrally covering the entire outer surface of the body plate with a thin film of synthetic resin made of polycarbonate or the like.

(2) Each of the dielectric plates is formed of a porous material such as foamed polystyrene or foamed polyurethane, and an appropriate amount of a radio wave attenuating material such as granular or powdered carbon or ferrite is mixed in advance before molding. According to
The radio wave absorber according to claim 1, wherein the dielectric loss of each dielectric plate is set to a predetermined value.

(3) The radio wave absorbing plate body according to claim 2, which is a registered utility model, characterized in that carbon fiber is used as the radio wave attenuating member.