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Electric field metering device

A measurement and electric field technology, applied in the field of electric field measurement devices, can solve the problems of high price, not equipment, etc.

Inactive Publication Date: 2013-10-23
SUMITOMO OSAKA CEMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, polarization-maintaining fibers are expensive, unlike ordinary fibers such as single-mode fibers, so they are not commonly installed equipment.

Method used

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  • Electric field metering device
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Experimental program
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Embodiment Construction

[0025] Hereinafter, the present invention will be described in detail using preferred examples.

[0026] figure 2 It is a figure which shows the outline|summary of the electric field measuring apparatus of this invention. The electric field intensity of electromagnetic waves generated from a device to be measured (not shown) which is set in an area for detecting electromagnetic waves such as an anechoic chamber is measured.

[0027] The "area for detecting electromagnetic waves" in the present invention is not limited to an anechoic chamber, but refers to a space where the device to be measured is installed on an open side or the like to detect electromagnetic waves generated by the device to be measured.

[0028] In addition, the area other than the "area where electromagnetic waves are detected" refers to an area that does not become an obstacle when measuring electromagnetic waves generated by the device to be measured, and may be outside the anechoic chamber or a place t...

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Abstract

A cheap electric field metering device capable of using existing laid fiber to be fiber introducing light wave from a light source portion to a light intensity modulator without using polarization keeping fiber. The electric field metering device is used for detecting electric field intensity of electromagnetic waves generated by detected devices arranged in an electromagnetic wave detection area; the electromagnetic wave device is characterized in that an antenna and a light intensity modulator (LN modulator) of a mach-zehnder light waveguide in the area, the light intensity modulator can carry out light modulation according to output signals of the antenna; outside the area, the light source portion, a light reception portion receiving the output light from the light intensity modulator, and a recogizer recognizing electric field intensity according to the output of the light reception portion (light receiving portion) are configured; a first fiber is employed to introduce light waves from the light source portion to the light intensity modulator; a second fiber (SMF) is employed to lead out the light waves from the light intensity modulator to the light reception portion; the light source portion is low-phase dry light source (ASE light source); the first fiber employs single mode fiber (SMF).

Description

technical field [0001] The present invention relates to an electric field measurement device, and in particular to an analog light transmission technology used in the field of electromagnetic field measurement such as the measurement of radiated electromagnetic wave noise of electronic equipment, the evaluation of electromagnetic wave measurement equipment such as an anechoic chamber, and the evaluation of antennas. electric field measuring device. Background technique [0002] The measurement of radiated electromagnetic wave noise and the like is performed in a measurement environment in which electromagnetic waves outside the measurement target are suppressed by equipment such as an anechoic chamber. Therefore, the signal received by the receiving antenna in the dark room is transmitted to the adjacent measurement room, and is measured by the measuring device installed there. [0003] In recent years, with the increase in speed of electronic equipment, the frequency of el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R29/08G01R15/24
Inventor 真家泽二牟礼胜仁
Owner SUMITOMO OSAKA CEMENT CO LTD