JPS5728441A - Monitor device for antenna power - Google Patents
Monitor device for antenna powerInfo
- Publication number
- JPS5728441A JPS5728441A JP10346480A JP10346480A JPS5728441A JP S5728441 A JPS5728441 A JP S5728441A JP 10346480 A JP10346480 A JP 10346480A JP 10346480 A JP10346480 A JP 10346480A JP S5728441 A JPS5728441 A JP S5728441A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- optical signal
- antenna
- electromagnetic wave
- monitor
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
Abstract
PURPOSE:To monitor the antenna power without being subjected to the effect of electric induction such as lightening surge and the like, by transmitting radiated power of an antenna after being converted into an optical signal. CONSTITUTION:Electromagnetic wave energy is detected at a broadband electromagnetic wave detector 21 located near a transmission antenna and the detected energy is converted into an optical signal. This optical signal is transmitted to a monitor main body 23 with an optical cable 22 to convert this optical signal into an electric signal proportional to the electromagnetic wave at a photoelectric signal conversion section 24. Based on this electric signal, an antenna power digitally displayed on a display section 25 is outputted to a level output terminal 27, and if the level is within a permissible range, normal display is made by a comparison discriminating section 26 and if it is outside the permissible range, failure display is made, allowing to output alarm to an alarm output terminal 28. Thus, the signal can be transmitted without being subjected to the effect of electric induction for accurate monitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10346480A JPS5728441A (en) | 1980-07-28 | 1980-07-28 | Monitor device for antenna power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10346480A JPS5728441A (en) | 1980-07-28 | 1980-07-28 | Monitor device for antenna power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5728441A true JPS5728441A (en) | 1982-02-16 |
Family
ID=14354731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10346480A Pending JPS5728441A (en) | 1980-07-28 | 1980-07-28 | Monitor device for antenna power |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5728441A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5548820A (en) * | 1994-07-26 | 1996-08-20 | Telefonaktiebolaget Lm Ericsson | Antenna and feeder cable tester |
| CN101944727A (en) * | 2009-07-06 | 2011-01-12 | 孙巍巍 | Surge protector with detection device |
| CN101943725A (en) * | 2009-07-06 | 2011-01-12 | 孙巍巍 | Online detection device of SPD (Surge Protective Device) |
| CN105302155A (en) * | 2015-11-27 | 2016-02-03 | 国网福建省电力有限公司 | Unmanned plane line patrol method for determining safe distance with power line carrier radiation |
-
1980
- 1980-07-28 JP JP10346480A patent/JPS5728441A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5548820A (en) * | 1994-07-26 | 1996-08-20 | Telefonaktiebolaget Lm Ericsson | Antenna and feeder cable tester |
| CN101944727A (en) * | 2009-07-06 | 2011-01-12 | 孙巍巍 | Surge protector with detection device |
| CN101943725A (en) * | 2009-07-06 | 2011-01-12 | 孙巍巍 | Online detection device of SPD (Surge Protective Device) |
| CN105302155A (en) * | 2015-11-27 | 2016-02-03 | 国网福建省电力有限公司 | Unmanned plane line patrol method for determining safe distance with power line carrier radiation |
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