JP2697147B2 - Antenna with transmission signal output alarm - Google Patents
Antenna with transmission signal output alarmInfo
- Publication number
- JP2697147B2 JP2697147B2 JP1149162A JP14916289A JP2697147B2 JP 2697147 B2 JP2697147 B2 JP 2697147B2 JP 1149162 A JP1149162 A JP 1149162A JP 14916289 A JP14916289 A JP 14916289A JP 2697147 B2 JP2697147 B2 JP 2697147B2
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- alarm device
- transmission signal
- signal output
- electromagnetic wave
- 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.)
- Expired - Fee Related
Links
Landscapes
- Aerials With Secondary Devices (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は無線通信に用いられ、特に送信機能を有する
アンテナに関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna used for wireless communication and particularly having a transmission function.
従来、送信機能を有する無線通信用アンテナは、送信
電磁波の利用を国が管理していたことから、専用の鉄塔
の上，或いは専用に設けた衛星通信用地球局敷地内等の
限定された場所に設置されていた。ところが、近年にお
ける通信の自由化や衛星通信の利用により、一般のビル
ディングの屋上等のような、不特定の人が近づくことが
できる場所に無線装置を設置し、その送信を行うための
アンテナが設置される状況になっている。Conventionally, since a radio communication antenna having a transmission function is controlled by the government, the use of transmission electromagnetic waves is limited to a limited location such as on a dedicated steel tower or in a site for a dedicated satellite communication earth station. It was installed in. However, due to the recent liberalization of communications and the use of satellite communications, wireless devices have been installed in places where unspecified people can access, such as the rooftops of general buildings, and antennas for transmitting the radio equipment have been installed. It is being set up.
このようにアンテナを自由に設置し得る状況では、一
般の人或いはアンテナの構成に不慣れな人が電磁波を送
信中のアンテナに近づく場合が多くなり、誤って送信電
磁波を伝播路内を横切ったり、該伝播路内に体の一部を
侵入させたりすることがある。これは、単に伝播路の遮
断することによる無線通信回線の障害を引き起こすだけ
ではなく、送信電磁波の人体への影響上も重要な問題と
なっている。In a situation where the antenna can be freely installed in this way, a general person or a person unfamiliar with the configuration of the antenna often approaches the antenna transmitting the electromagnetic wave, and erroneously crosses the transmission electromagnetic wave in the propagation path, Part of the body may enter the propagation path. This not only causes a failure in the wireless communication line by simply blocking the propagation path, but also poses an important problem in the effect of the transmitted electromagnetic waves on the human body.
一般に、人体に対する許容電磁波レベルとしては、５
〜10mW/cm-2が国際的な標準レベルとして推奨されてい
る。このため、従来では、電磁波レベルを測定する測定
器も、許容値をはるかに下回る極微弱電磁波レベル測定
用をはじめとして、各種の測定器が存在するが、上述し
たように不特定の人が近づく可能性がある場合には、こ
の種の測定器をアンテナと共に屋外に設置する必要があ
り、そのための防水，防風対策等の設備が必要となり、
高価格になり、好適な対策とはなり得ない。Generally, the allowable electromagnetic wave level for the human body is 5
~ 10 mW / cm -2 is recommended as an international standard level. For this reason, conventionally, a measuring instrument for measuring the electromagnetic wave level also includes various measuring instruments, including those for measuring an extremely weak electromagnetic wave level far below an allowable value, but an unspecified person approaches as described above. If there is a possibility, it is necessary to install this type of measuring device together with the antenna outdoors, and equipment such as waterproofing and windproof measures will be required.
It becomes expensive and cannot be a suitable measure.
本発明は伝播路内への人の侵入による電磁波の遮断及
び人体への電磁波の悪影響を防止したアンテナを提供す
ることを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide an antenna that blocks electromagnetic waves due to entry of a person into a propagation path and prevents adverse effects of electromagnetic waves on a human body.
本発明のアンテナは、無線電磁波の送受信を行う開口
面の一部またはその近傍に、当該開口面から送信される
電磁波の送信時に警報を発生する送信信号出力警報装置
を配置している。この警報装置は、送信電磁波を受信す
るピックアップアンテナと、この受信信号を検波する検
波器と、検波された信号を増幅する増幅器と、増幅され
た信号により光または音声の警報を出力する警報器とを
備えている。In the antenna of the present invention, a transmission signal output alarm device that generates an alarm when an electromagnetic wave transmitted from the opening is transmitted is disposed at or near a part of the opening that transmits and receives wireless electromagnetic waves. The alarm device includes a pickup antenna that receives a transmission electromagnetic wave, a detector that detects the received signal, an amplifier that amplifies the detected signal, and an alarm device that outputs a light or voice alarm based on the amplified signal. It has.
なお、ピックアップアンテナは、送信信号の周波数帯
域に応じて交換可能に構成する。The pickup antenna is configured to be exchangeable according to the frequency band of the transmission signal.
また、開口面を大地に対して垂直に設置したとき、ピ
ックアップアンテナの偏波が大地に対して45度傾斜され
るように構成している。Further, when the aperture surface is installed perpendicular to the ground, the polarization of the pickup antenna is configured to be inclined by 45 degrees with respect to the ground.
この構成では、送信時には、警報装置が送信電磁波を
受信して警報を発生するため、人がアンテナに近づくこ
とが未然に防止され、電磁波の遮断及び人体への電磁波
の照射が防止される。In this configuration, at the time of transmission, the alarm device receives the transmitted electromagnetic wave and generates an alarm, so that a person is prevented from approaching the antenna, and the interruption of the electromagnetic wave and the irradiation of the human body with the electromagnetic wave are prevented.
次に、本発明を図面を参照して説明する。 Next, the present invention will be described with reference to the drawings.
第１図は本発明の第１実施例の斜視図である。無線送
受信装置１の上にアンテナを配置している。このアンテ
ナは、前記無線送受信装置１の上に配設した主反射鏡２
と、この主反射鏡２に対向配置して主反射鏡２を照射す
るための一次放射器３と、この一次放射器３を支持する
アンテナ架台４とを備えている。そして、前記主反射鏡
２の一部に送信信号出力警報装置５を配設している。FIG. 1 is a perspective view of a first embodiment of the present invention. An antenna is arranged on the wireless transmitting / receiving device 1. This antenna includes a main reflecting mirror 2 disposed on the wireless transmitting / receiving device 1.
A primary radiator 3 for irradiating the main reflector 2 with the main radiator 2 facing the main reflector 2; and an antenna mount 4 supporting the primary radiator 3. A transmission signal output alarm device 5 is provided in a part of the main reflecting mirror 2.
この警報装置５は、一次放射器３から放射された電磁
波の一部を受信し、光又は音声により送信出力中である
ことを警報するものである。This alarm device 5 receives a part of the electromagnetic wave radiated from the primary radiator 3 and warns that transmission output is being performed by light or voice.
即ち、この警報装置５は、第４図に示すように、ピッ
クアップアンテナ6,ダイオード検波器7,増幅器8,間欠回
路9,警報器10及び電源（電池）11で構成され、これらを
一体に構成している。That is, as shown in FIG. 4, the alarm device 5 includes a pickup antenna 6, a diode detector 7, an amplifier 8, an intermittent circuit 9, an alarm device 10, and a power supply (battery) 11, which are integrally formed. doing.
前記ピックアップアンテナ６は、第２図に示すよう
に、誘電体基板21の表面に金属パッチ22を形成し、裏面
に地導体23を形成しており、ダイオード検波器７に接続
したものが採用される。あるいは、第３図に示すよう
に、誘電体基板31の各面にそれぞれ1/4波長の導体パタ
ーン32,32を形成し、これらで半波長ダイポールアンテ
ナを構成してもよい。As shown in FIG. 2, the pickup antenna 6 has a metal patch 22 formed on the surface of a dielectric substrate 21 and a ground conductor 23 formed on the back surface, and is connected to the diode detector 7. You. Alternatively, as shown in FIG. 3, quarter-wavelength conductor patterns 32, 32 may be formed on the respective surfaces of the dielectric substrate 31, and these may constitute a half-wavelength dipole antenna.
このピックアップアンテナ６の利得は２〜6dB程度で
あるが、一般に広帯域化が困難なため、モジュール単位
で周波数帯毎に交換するように構成する。また、アンテ
ナの送信波は電磁波の偏波が直線の場合と円偏波の場合
があるため、いずれの偏波に対しても検出ができるよう
に、主反射鏡２の開口面を大地に対して垂直にしたとき
に、ピックアップアンテナ６の偏波が大地に対して45度
傾斜するように取付ている。The gain of the pickup antenna 6 is about 2 to 6 dB, but since it is generally difficult to widen the band, the pickup antenna 6 is configured to be replaced for each frequency band in module units. Also, since the transmission wave of the antenna may be a case where the polarization of the electromagnetic wave is linear or a case where the polarization of the electromagnetic wave is circular, the opening surface of the main reflecting mirror 2 is set to the ground so that any polarization can be detected. The antenna is mounted so that the polarization of the pickup antenna 6 is inclined at 45 degrees with respect to the ground when the antenna is set vertically.
この構成のアンテナによれば、送受信装置１から出力
された送信信号は、一次放射器３から主反射鏡２を照射
し、ここで反射されて通信の相手局に向かって略平行に
放射される。したがって、光学的には主反射鏡２の直径
Ｄの円筒内では放射電磁波エネルギが集束された領域で
あり、この範囲内を電波の障害物が通れば、アンテナの
性能に影響を及ぼし、人体にも悪影響を与えることにな
る。According to the antenna having this configuration, the transmission signal output from the transmission / reception device 1 irradiates the main reflecting mirror 2 from the primary radiator 3 and is reflected here and radiated substantially parallel to the communication partner station. . Therefore, optically, in a cylinder having a diameter D of the main reflecting mirror 2, a radiated electromagnetic wave energy is a focused region. If an obstacle of a radio wave passes through this range, the performance of the antenna is affected and the human body is affected. Will also have a negative effect.
しかしながら、この構成では、一次放射器３から放射
される電磁波の一部をピックアップアンテナ６で検出
し、この検出電力に基づいて警報装置５が動作される。
すなわち、警報装置５では、ピックアップアンテナ６に
より数mW程度の出力を得、これをダイオード検波器７で
直接検波を行った後、増幅器８で増幅し、間欠回路９を
介して警報器10を動作させ、間欠的な警報音を発生させ
る。However, in this configuration, a part of the electromagnetic wave radiated from the primary radiator 3 is detected by the pickup antenna 6, and the alarm device 5 is operated based on the detected power.
That is, in the alarm device 5, an output of about several mW is obtained by the pickup antenna 6, which is directly detected by the diode detector 7, amplified by the amplifier 8, and operates the alarm 10 through the intermittent circuit 9. And generate an intermittent alarm sound.
これにより、アンテナが送信の状態にあるときに、警
報装置９から警報音が間欠的に発生されるため、一般の
人はアンテナが送信中であることを認識し、アンテナに
近づくことを未然に回避し、通信の遮断や人体への悪影
響を防止する。Accordingly, when the antenna is in the transmission state, the alarm sound is intermittently generated from the alarm device 9, so that a general person recognizes that the antenna is transmitting, and precedes approaching the antenna. Avoid and prevent communication interruption and adverse effects on the human body.
第５図は本発明の第２実施例の側面図であり、第１実
施例と対応する部分には同一符号を付してある。FIG. 5 is a side view of a second embodiment of the present invention, in which parts corresponding to those of the first embodiment are denoted by the same reference numerals.
ここでは、副反射鏡12を備えるアンテナに適した例を
示しており、警報装置５は副反射鏡12の外周部に配設し
ている。Here, an example suitable for an antenna having the sub-reflector 12 is shown, and the alarm device 5 is provided on the outer peripheral portion of the sub-reflector 12.
また、この実施例では警報装置５を主反射鏡２の開口
直径Ｄ内に配置しているため、送信出力電磁波のピック
アップは主反射鏡で反射後の電磁波を検出することにな
るが、警報装置５を副反射鏡12の他の箇所に配置して一
次放射器３からの直接波を検出するようにしてもよい。Further, in this embodiment, since the alarm device 5 is arranged within the opening diameter D of the main reflecting mirror 2, the pickup of the transmission output electromagnetic wave detects the electromagnetic wave reflected by the main reflecting mirror. The direct wave from the primary radiator 3 may be detected by disposing the 5 at another position of the sub-reflecting mirror 12.
なお、警報装置５の電源には、商用のAC電源を用いる
ことも可能である。Note that a commercial AC power supply can be used as the power supply for the alarm device 5.
以上説明したように本発明は、電磁波の送信時に警報
を発生する送信信号出力警報装置を備えているので、ア
ンテナが送信を行っているときには警報装置から警報が
出されるため、人がアンテナに近づくことを未然に回避
し、通信の遮断及び人体への悪影響を防止することがで
きる効果がある。As described above, the present invention includes the transmission signal output alarm device that generates an alarm when an electromagnetic wave is transmitted. Therefore, when the antenna is transmitting, an alarm is issued from the alarm device, so that a person approaches the antenna. This has the effect of avoiding this in advance and preventing communication interruption and adverse effects on the human body.
第１図は本発明の第１実施例の斜視図、第２図はピック
アップアンテナの１つの例の断面図、第３図はピックア
ップアンテナの他の例の斜視図、第４図は警報装置の回
路図、第５図は本発明の第２実施例の側面図である。 １……無線送受信装置、２……主反射鏡、３……一次放
射器、４……アンテナ架台、５……送受信出力警報装
置、６……ピックアップアンテナ、７……ダイオード検
波器、８……増幅器、９……間欠回路、10……警報器、
11……電源、12……副反射鏡、21……誘電体基板、22…
…金属パッチ、23……地導体、31……誘電体基板、32…
…導体パターン。FIG. 1 is a perspective view of a first embodiment of the present invention, FIG. 2 is a sectional view of one example of a pickup antenna, FIG. 3 is a perspective view of another example of a pickup antenna, and FIG. FIG. 5 is a circuit diagram, and FIG. 5 is a side view of a second embodiment of the present invention. DESCRIPTION OF SYMBOLS 1 ... Wireless transmission / reception apparatus, 2 ... Main reflector, 3 ... Primary radiator, 4 ... Antenna mount, 5 ... Transmission / reception output alarm device, 6 ... Pickup antenna, 7 ... Diode detector, 8 ... ... Amplifier, 9 ... Intermittent circuit, 10 ... Alarm,
11 ... Power supply, 12 ... Sub-reflector, 21 ... Dielectric substrate, 22 ...
... metal patch, 23 ... ground conductor, 31 ... dielectric substrate, 32 ...
... conductor pattern.
Claims (3)
アンテナにおいて、前記開口面の一部またはその近傍に
は、前記開口面から送信される電磁波を受信したときに
警報を発生する送信信号出力警報装置を配置しており、
この警報装置は、前記開口面から送信される電磁波を受
信するピックアップアンテナと、この受信信号を検波す
る検波器と、検波された信号を増幅する増幅器と、増幅
された信号により光または音声の警報を出力する警報器
とを備えることを特徴とする送信信号出力警報装置付ア
ンテナ。1. An antenna having an opening for transmitting and receiving radio electromagnetic waves, wherein a transmission signal output for generating an alarm when receiving an electromagnetic wave transmitted from the opening is provided in a part of or near the opening. There is an alarm device,
The alarm device includes a pickup antenna that receives an electromagnetic wave transmitted from the aperture surface, a detector that detects the received signal, an amplifier that amplifies the detected signal, and an optical or audio alarm based on the amplified signal. An antenna with a transmission signal output alarm device, comprising:
数帯域に応じて交換可能に構成してなる特許請求の範囲
第１項記載の送信信号出力警報装置付アンテナ。2. The antenna with a transmission signal output alarm device according to claim 1, wherein the pickup antenna is configured to be exchangeable according to a frequency band of a transmission signal.
き、ピックアップアンテナの偏波が大地に対して45度傾
斜されるように構成してなる特許請求の範囲第１項又は
第２項に記載の送信信号出力警報装置付アンテナ。3. The pickup antenna according to claim 1, wherein the polarization of the pickup antenna is inclined by 45 degrees with respect to the ground when the aperture is installed perpendicular to the ground. An antenna with a transmission signal output alarm device according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1149162A JP2697147B2 (en) | 1989-06-12 | 1989-06-12 | Antenna with transmission signal output alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1149162A JP2697147B2 (en) | 1989-06-12 | 1989-06-12 | Antenna with transmission signal output alarm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0313104A JPH0313104A (en) | 1991-01-22 |
| JP2697147B2 true JP2697147B2 (en) | 1998-01-14 |
Family
ID=15469150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1149162A Expired - Fee Related JP2697147B2 (en) | 1989-06-12 | 1989-06-12 | Antenna with transmission signal output alarm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2697147B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008039705A (en) * | 2006-08-09 | 2008-02-21 | Nec Corp | Device and method of caculating lateral distance detection rate curve, and program for calculating lateral distance detection rate curve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5242311A (en) * | 1975-09-30 | 1977-04-01 | Kyushu Electric Power Co Inc | Output supervisory system for transmission electromagnetic wave |
| JPS6178402U (en) * | 1984-10-29 | 1986-05-26 |
-
1989
- 1989-06-12 JP JP1149162A patent/JP2697147B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0313104A (en) | 1991-01-22 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |