Measurements of the Radiated Electric Field and the Common Mode Current from the In-house Broadband Power Line Communications in Residential Environment III

ジュウタク　カンキョウ　ニ　オケル　オクナイ　コウタイイキ　デンリョクセン　ハンソウ　ツウシン　カラ　ノ　ロウエイ　デンカイ　ト　コモンモード　デンリュウ　ノ　ソクテイ　Ⅲ

キタガワ, マサヒロ

Kitagawa, Masahiro

大石, 雅寿

オオイシ, マサトシ

Ohishi, Masatoshi

PLC

漏洩電界

周囲雑音

コモンモード電流

ディファレンシャルモード電流

引込線

ブロッキングフィルタ

power line communications

radiated electric field

ambient noise

common-mode current

differential-mode current

aerial service wire

blocking filter

The radiated electric field (REF) of the in-house broadband power line communications (PLC) in Japan is supposed to be below the ambient noise level, but actually exceeds it by more than 30dB. We have measured the REF, common mode current (CMI) and differential mode current (DMI) of the PLC modem and service line and found that the DMI is 40dB larger than the CMI and the major cause of the REF. In-house to service line DMI leakage is 0 to -30dB and almost 100% converted to the CMI, which exceeds that of the modem and contributes to the REF. The blocking filter is required. The REF or DMI must be regulated.

大石, 雅寿