PC card second generation shielding

Details PC card second generation shielding PC card second generation shielding

1998-09-15

2000-04-11

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

361799, 361752, 361800, 361737, 174 35R, 174 35GC, H05K 900

Patent

active

060494689

ABSTRACT:
A PC card with a circuit board (14) and sheet metal cover parts (16, 17), is provided with a shielded volume (23, 29) where a circuit component (24) is isolated from circuit components outside the shielded volume. An internal shield (18) of electrically conductive material surrounds the shielded volume, and is engaged with a ground trace (28) on the circuit board. The internal shield is flexible so it bends when the sheet metal cover parts bend, to avoid breaking the circuit board. Layers of electrically conductive adhesive (42, 44, 46) couple the internal shield to the circuit board into one of the cover parts. A plate-like shielding device (40) can be provided, that includes a metal foil (41) that is bonded to the internal shield and that lies over the entire shielded volume.

REFERENCES:
patent: 5005106 (1991-04-01), Kiku
patent: 5323299 (1994-06-01), Weber
patent: 5339222 (1994-08-01), Simmons et al.
"Taking a Good Idea into Production" Electronic Engineering, vol. 68, No.830, Feb., 1996, p. EMC 8 XP000556581 *the whole document*.

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