Electromagnetic Interference Analysis Based on Total Harmonic Distortion Measurement in 900 MHz Cordless Telephones

被引：0
|
作者：
Park, Jeung Geun [1 ]
Kim, Che Young [1 ]
机构：
[1] Kyungpook Natl Univ, Sch Elect Engn, Taegu 702701, South Korea
来源：
IEICE TRANSACTIONS ON COMMUNICATIONS | 2010年 / E93B卷 / 09期
关键词：
total harmonic distortion; electromagnetic intelference; cordless telephone (CT-l); low power radio device; THD measurement;
D O I：
10.1587/transcom.E93.B.2348
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper a new electromagnetic (EM) interference analysis is proposed using the total harmonic distortion (THD) measurement of the audio signal by the 900 MHz cordless telephones. The cordless telephone network in 900 MHz was built up to be weak in EM interference. 400 and 800 Hz of the sine-wave signal were used in transmitter (TX) system, and the receiver (RX) system was exposed to the EM interference. The THD value varies as the level of the exposed EM interference changes. The model of the cordless telephone also affects the THD value. By using fluctuation of the THD value depending on the amount of the exposure, the threshold value of the interference electric field strength was derived. Based on the derived threshold value of the electric field strength, validity of the regulation value for low power radio devices by CISPR 22 [CLASS B] and FCC is discussed.
引用
收藏
页码：2348 / 2353
页数：6
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