Electro-magnetic wave shielding structure

Details Electro-magnetic wave shielding structure Electro-magnetic wave shielding structure

1993-07-08

1994-12-20

Picard, Leo P.

Electricity: conductors and insulators

Anti-inductive structures

Conductor transposition

174 35MS, 331 67, H05K 900

Patent

active

053747798

ABSTRACT:
For sufficiently shielding an undesired electro-magnetic wave from penetrating into a communication apparatus, for instance, a car telephone through stray coupling, or leaks therefrom, an electronic circuit substrate and a case of the communication apparatus are formed of flat plates which consist of insulating material comprising magnetic material. One side surface of the flat plates are covered with conductive films. The communication apparatus itself is accommodated in the case and an electric power source connecting cable is wrapped by a similar arrangement, so as to remarkably reduce obstructions caused by undesired waves and other communications in comparison with the conventional arrangement.

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patent: 5260128 (1993-11-01), Ishii et al.
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