A Study on Radiated Emissions from Fiber Optical Modules(Special Issue on Recent Progress in Electromagnetic Compatibility Technology)
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概要
- 論文の詳細を見る
Attempts have been made to evaluate and investigate the radiated emissions from fiber optical modules that are currently available in the market.Far electric field strength measurements show that the radiated emission has a peak at a high-order harmonic wave of the fundamental pulse frequency and reaches a level exceeding the limiting values of the CISPR noise specifications. Near magnetic field distribution measurements show that the source of the interference noise lies between a light emitting diode(LED)module and an LED driver.These measurements are compared with those of electromagnetic field calculations based on a high-frequency equivalent circuit.As a result, it was established that both the peaking effects of deformed pulse waves transmitted between an LED module and an LED driver and the radiation characteristics of the optical transmitter circuit act as factors for increasing the radiation level of the peak frequencies in the radiated emission from fiber optical modules.
- 社団法人電子情報通信学会の論文
- 2000-03-25
著者
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Aizawa Takeshi
Electromagnetic Compatibility Research Laboratories Co. Ltd.
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Sato Risaburo
Professors Emeritus Tohoku Univ.
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Sato Risaburo
Electromagnetic Compatibility Research Lab. Co. Ltd
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Sato R
Professors Emeritus Tohoku Univ.
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Yamamoto H
Ntt Corp. Musashino‐shi Jpn
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YAMAMOTO Hidetoshi
Electromagnetic Compatibility Research Laboratories Co., Ltd.
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SHINOHARA Shinichi
Electromagnetic Compatibility Research Laboratories Co., Ltd.
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SHINOHARA Shinichi
Sony Corp.
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Yamamoto Heiichi
Nara Institule Of Science And Technology
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Shinohara S
Sony Corp.
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Shinohara Shinichi
Electromagnetic Compatibility Research Lab.co. Ltd.
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