JPS6385372A - Electromagnetic wave measuring apparatus - Google Patents
Electromagnetic wave measuring apparatusInfo
- Publication number
- JPS6385372A JPS6385372A JP23271586A JP23271586A JPS6385372A JP S6385372 A JPS6385372 A JP S6385372A JP 23271586 A JP23271586 A JP 23271586A JP 23271586 A JP23271586 A JP 23271586A JP S6385372 A JPS6385372 A JP S6385372A
- Authority
- JP
- Japan
- Prior art keywords
- measured
- radio wave
- detection elements
- panels
- measuring device
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000002184 metal Substances 0.000 claims abstract description 5
- 239000006096 absorbing agent Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 abstract description 6
- 239000000843 powder Substances 0.000 abstract description 4
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 4
- 238000005245 sintering Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 230000005855 radiation Effects 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】
〔概要〕
プリント基板又はユニット等の被測定物から放射する電
磁波を測定する装置であって、該測定装置を囲む６面の
うち底側のパネル上に複数個の検出用エレメントで形成
し、他の５面を電波吸収体で形成した箱体内に被測定物
を収容して、該被測定物から放射する電磁波を複数個の
検出用エレメントの出力線（コネクタ）を、周波数分析
器或いはレベルメータ等の外部測定器に接続して、各検
出用エレメントからの電磁波を測定して、妨害電磁波雑
音（以下妨害電波という）の分布が簡易に把握できる。[Detailed Description of the Invention] [Summary] A device for measuring electromagnetic waves emitted from an object to be measured such as a printed circuit board or a unit, which includes a plurality of detection sensors on a bottom panel among six sides surrounding the measuring device. The object to be measured is housed in a box made of a detection element and the other five sides are made of a radio wave absorber, and the electromagnetic waves radiated from the object are connected to the output lines (connectors) of the plurality of detection elements. By connecting to an external measuring device such as a frequency analyzer or a level meter, and measuring the electromagnetic waves from each detection element, the distribution of interfering electromagnetic noise (hereinafter referred to as interfering radio waves) can be easily grasped.
本発明は、プリント基板又はユニット等の被測定物から
放射する妨害電波の分布を簡易に把握できるようにした
電磁波測定装置に関する。The present invention relates to an electromagnetic wave measuring device that makes it possible to easily grasp the distribution of interference waves radiated from an object to be measured such as a printed circuit board or a unit.
近年、電子機器とくに磁気記憶を用いたオフィス機器の
開発が目覚ましく、これらのオフィス機器を同フロ“ア
ーに混在して使用される傾向にあるので、相互機器間の
電磁干渉を防ぐために機器は一般に電気的にシールドさ
れた構造となっている。In recent years, the development of electronic equipment, especially office equipment that uses magnetic memory, has been remarkable, and there is a tendency for these office equipment to be used together on the same floor, so in order to prevent electromagnetic interference between each other, equipment is generally It has an electrically shielded structure.
ところがこのような電気的シールド（電磁遮蔽）を行な
っても他の機器の妨害電波の干渉を受ける恐れがあるの
で、電磁波を放射する機器を完全に電磁遮蔽をしなけれ
ば成らない。この対策として電磁波を放射する機器の電
磁波の分布を簡易に測定できる電磁波測定装置の出現が
要望されている。However, even with such electrical shielding (electromagnetic shielding), there is a risk of interference from other equipment's radio waves, so equipment that emits electromagnetic waves must be completely electromagnetically shielded. As a countermeasure to this problem, there is a demand for an electromagnetic wave measuring device that can easily measure the distribution of electromagnetic waves from devices that emit electromagnetic waves.
従来の電磁波の測定は、電子機器から放射する電磁波を
アンテナで受信して、該受信電波を周波数分析器又はレ
ベルメータ等の測定器で検出するのであるが、これらの
試験場所としては電波密度の少ない土地（山間の凹地等
）に設けられた「測定サイト」又は電波吸収体で囲まれ
た「電波暗室」を設置して測定を行なっている。Conventional electromagnetic wave measurements involve receiving electromagnetic waves emitted from electronic equipment using an antenna, and detecting the received radio waves using a frequency analyzer or a measuring device such as a level meter. Measurements are carried out by setting up a ``measurement site'' in a small amount of land (such as a depression in the mountains) or an ``anechoic chamber'' surrounded by radio wave absorbers.
上記従来の電磁波の測定にあっては、設備が高価であり
設置場所及び設置数が限定されるので、簡単に使用出来
ず、しかも使用時間の制限等により、開発過程における
実験等が支障を来すという問題点があった。In the conventional electromagnetic wave measurement mentioned above, the equipment is expensive and the installation location and number of installations are limited, so it is not easy to use, and furthermore, due to limitations on usage time, etc., experiments in the development process are hindered. There was a problem with this.
〔問題点を解決するための手段〕
本発明は、上記の問題点を解決して被測定物から放射す
る電磁波を簡易に測定できるようにした電磁波測定装置
を提供するものである。[Means for Solving the Problems] The present invention solves the above problems and provides an electromagnetic wave measuring device that can easily measure electromagnetic waves radiated from an object to be measured.
すなわち、被測定物から放射する電磁波を測定する装置
を、前記被測定物を囲む１面以上複数面のパネル上に金
属電極板又はコイルからなる複数個の検出用エレメント
を配置し、この検出用エレメント以外の他の全面を電波
吸収体で形成して、前記それぞれの検出用エレメントの
出力線を、外部測定器に接続して、前記被測定物から放
射する電磁波の分布を測定するようにしたことによって
解決される。That is, a device for measuring electromagnetic waves emitted from an object to be measured is constructed by arranging a plurality of detection elements made of metal electrode plates or coils on one or more panels surrounding the object to be measured. The entire surface other than the element is made of a radio wave absorber, and the output lines of each of the detection elements are connected to an external measuring device to measure the distribution of electromagnetic waves radiated from the object to be measured. This is solved by
上記電磁波測定装置は、電磁波を放射する被測定物を収
容する箱体の底側のパネル上に複数個の検出用エレメン
トで構成し、他の５面を金属電極板又はコイルからなる
電波吸収体で囲った簡易な構造で、しかも複数個の検出
用エレメントを用いたことにより、放射する電磁波分布
を簡易に把握することができる。The electromagnetic wave measuring device described above consists of a plurality of detection elements on the bottom panel of a box that houses an object to be measured that emits electromagnetic waves, and the other five sides are covered with radio wave absorbers made of metal electrode plates or coils. By using a simple structure surrounded by , and using a plurality of detection elements, it is possible to easily understand the distribution of emitted electromagnetic waves.
第１図は、本発明の一実施例を説明する模式的斜視図で
ある。FIG. 1 is a schematic perspective view illustrating an embodiment of the present invention.
プリント基板又はユニット等の被測定物１から放射する
電磁波を測定する測定装置を、該被測定物１の収容可能
な箱体で形成し、該箱体の底側のパネル３上に金属電極
板又はコイル等からなる複数個（図面では４ａ〜４ｒの
６個）の検出用エレメント４を密着するよう配置し、他
の全面をたとえばフェライト粉末を板状に焼結したタイ
ル又はフェライト粉末を含浸させたクサビ状のスポンジ
等の電波吸収体６で構成したものであるが、被測定物１
を出し入れするために電波吸収体６の上面板（天井Ｆｉ
）は取外し可能な構成とする。A measuring device for measuring electromagnetic waves emitted from an object to be measured 1 such as a printed circuit board or a unit is formed of a box that can accommodate the object to be measured 1, and a metal electrode plate is placed on a panel 3 on the bottom side of the box. Alternatively, a plurality of detection elements 4 (six elements 4a to 4r in the drawing) consisting of coils or the like are arranged in close contact with each other, and the other entire surface is impregnated with, for example, a tile made of ferrite powder sintered into a plate shape or ferrite powder. It is composed of a radio wave absorber 6 such as a wedge-shaped sponge, and the object to be measured 1
The top plate of the radio wave absorber 6 (ceiling Fi
) shall be removable.
そうして、前記検出用エレメント４（４ａ〜４ｆ）から
はそれぞれコネクタ等の出力線５ （５ａ〜５ｆ）が引
き出されている。Output lines 5 (5a to 5f) such as connectors are drawn out from the detection elements 4 (4a to 4f), respectively.
このような構成の電磁波測定装置の前記取外し可能な上
面板（天井板）を取り外して、図示しない電源、信号線
で駆動される被測定物１ （図面ではプリント基板を示
す）を収容して動作せしめた状態で、検出用エレメント
６の出力線５ａ〜５ｆを順次外部測定器２に接続して、
被測定物１の各部から放射される電磁波を測定する。The removable top plate (ceiling plate) of the electromagnetic wave measurement device having such a configuration is removed, and the device to be measured 1 (the drawing shows a printed circuit board) driven by a power supply and signal line (not shown) is operated. In this state, connect the output lines 5a to 5f of the detection element 6 to the external measuring device 2 in sequence,
Electromagnetic waves radiated from each part of the object to be measured 1 are measured.
なお、本実施例では検出用エレメント４を６個用いた説
明をしたが、６個に限らず複数個であっても構わないが
、電磁波の精密な放射分布を必要とする場合は個数が多
いのが好ましい。また被測定物１の出し入れのために箱
体の上面板（天井板）を取外す説明をしたが、上面板に
限らず側面板であっても良い。また検出用エレメント４
は箱体の底側に用いた説明をしたが、目的に応じ１面以
上複数面（箱体の前面）であっても良い。In this embodiment, six detection elements 4 are used, but the number is not limited to six, and a plurality of detection elements 4 may be used, but if a precise radiation distribution of electromagnetic waves is required, a large number of detection elements 4 may be used. is preferable. Furthermore, although the explanation has been given for removing the top plate (ceiling plate) of the box in order to take in and take out the object 1 to be measured, the present invention is not limited to the top plate, and may be a side plate. Also, the detection element 4
Although it has been explained that it is used on the bottom side of the box, it may be used on one or more surfaces (the front of the box) depending on the purpose.
以上の説明から明らかなように、本発明によれば放射す
る電磁波の測定が簡易に行なえ、その分布が正確に把握
できるので、開発過程の機器の電磁波測定に適用して極
めて有効である。As is clear from the above description, according to the present invention, radiated electromagnetic waves can be easily measured and their distribution can be accurately grasped, so that the present invention is extremely effective when applied to electromagnetic wave measurements of equipment in the development process.
第１図は、本発明の一実施例を説明する模式的斜視図で
ある。
図において、１は被測定物、２は外部測定器、３はパネ
ル、４．４ａ〜４ｆは検出用エレメント、５．５ａ〜５
ｆは出力線、６は電波吸収体、をそれぞれ示す。
本発明の一父施例
第１図FIG. 1 is a schematic perspective view illustrating an embodiment of the present invention. In the figure, 1 is an object to be measured, 2 is an external measuring device, 3 is a panel, 4.4a to 4f are detection elements, and 5.5a to 5
f indicates an output line, and 6 indicates a radio wave absorber. First embodiment of the present invention Fig. 1
Claims (1)
って、 前記被測定物（１）を囲む１面以上複数面のパネル（３
）上に金属電極板又はコイルからなる複数個の検出用エ
レメント（４）を配置し、該検出用エレメント（４）以
外の箱体全面を電波吸収体（６）で形成して、前記それ
ぞれの検出用エレメント（４）の出力線（５）を、外部
測定器（２）に接続して、前記被測定物（１）から放射
する電磁波の分布を測定するようにしたことを特徴とす
る電磁波測定装置。[Claims] A device for measuring electromagnetic waves radiated from an object to be measured (1), comprising one or more panels (3) surrounding the object to be measured (1).
), a plurality of detection elements (4) consisting of metal electrode plates or coils are arranged, and the entire surface of the box other than the detection elements (4) is formed with a radio wave absorber (6), and each of the above-mentioned An electromagnetic wave characterized in that the output line (5) of the detection element (4) is connected to an external measuring device (2) to measure the distribution of electromagnetic waves radiated from the object to be measured (1). measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23271586A JPS6385372A (en) | 1986-09-29 | 1986-09-29 | Electromagnetic wave measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23271586A JPS6385372A (en) | 1986-09-29 | 1986-09-29 | Electromagnetic wave measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6385372A true JPS6385372A (en) | 1988-04-15 |
Family
ID=16943649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23271586A Pending JPS6385372A (en) | 1986-09-29 | 1986-09-29 | Electromagnetic wave measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6385372A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020022141A (en) * | 2018-08-03 | 2020-02-06 | アンリツ株式会社 | Planar antenna device, wireless terminal measuring device including the same, and wireless terminal measuring method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919874A (en) * | 1982-07-26 | 1984-02-01 | Mitsubishi Electric Corp | Testing device of radiation interference sensitivity |
| JPS60122377A (en) * | 1983-12-05 | 1985-06-29 | Nec Corp | Emi/rfi measuring device |
-
1986
- 1986-09-29 JP JP23271586A patent/JPS6385372A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5919874A (en) * | 1982-07-26 | 1984-02-01 | Mitsubishi Electric Corp | Testing device of radiation interference sensitivity |
| JPS60122377A (en) * | 1983-12-05 | 1985-06-29 | Nec Corp | Emi/rfi measuring device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020022141A (en) * | 2018-08-03 | 2020-02-06 | アンリツ株式会社 | Planar antenna device, wireless terminal measuring device including the same, and wireless terminal measuring method |
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