JPS5585258A - Measuring apparatus for digital electric field intensity - Google Patents
Measuring apparatus for digital electric field intensityInfo
- Publication number
- JPS5585258A JPS5585258A JP16555078A JP16555078A JPS5585258A JP S5585258 A JPS5585258 A JP S5585258A JP 16555078 A JP16555078 A JP 16555078A JP 16555078 A JP16555078 A JP 16555078A JP S5585258 A JPS5585258 A JP S5585258A
- Authority
- JP
- Japan
- Prior art keywords
- electric field
- intermediate frequency
- field intensity
- level
- attenuator
- 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
Landscapes
- Control Of Amplification And Gain Control (AREA)
Abstract
PURPOSE: To improve the linearity and temperature stability by means of a digital automatic gain adjusting circuit employing a programmable attenuator.
CONSTITUTION: An intermediate frequency signal proportional to an input wireless frequency level of an intermediate frequency band filter 6 is attenuated with a programable attenuator 21, amplified with an intermediate frequency amplifier 7 and detected with a detector 8. A voltage comparator 21 compares the output voltage of the detector with the set value and then, by discrimination signal an up/down counter 23 performs an up/down counting to control the attenuation level of the programable attenuator 20. The output of the counter 23 presents an input level of the wireless frequency, serving as measured value of the electric field intensity.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16555078A JPS5585258A (en) | 1978-12-21 | 1978-12-21 | Measuring apparatus for digital electric field intensity |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16555078A JPS5585258A (en) | 1978-12-21 | 1978-12-21 | Measuring apparatus for digital electric field intensity |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5585258A true JPS5585258A (en) | 1980-06-27 |
Family
ID=15814493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16555078A Pending JPS5585258A (en) | 1978-12-21 | 1978-12-21 | Measuring apparatus for digital electric field intensity |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5585258A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102879650A (en) * | 2012-09-29 | 2013-01-16 | 兰州大学 | Intelligent range-adjustable sandstorm electric field measuring system based on shielded probe |
-
1978
- 1978-12-21 JP JP16555078A patent/JPS5585258A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102879650A (en) * | 2012-09-29 | 2013-01-16 | 兰州大学 | Intelligent range-adjustable sandstorm electric field measuring system based on shielded probe |
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