FIELD: electricity.
SUBSTANCE: circuit module is mounted with integral circuit (IC) which modulates and demodulates the signal with several carriers. Circuit module has multi-layer board which is equipped on the outside with many conducting layers laid with insulating layers between them and IC which is equipped with many earthing outputs which shall be earthed. The conducting layer which is the closest to IC of many conducting layers forms the earthing layer electrically connected to many earthing outputs.
EFFECT: improving reliability and increasing noise protection.
16 cl, 39 dwg
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