Double wall baffle for airflow and RFI shielding

Details Double wall baffle for airflow and RFI shielding Double wall baffle for airflow and RFI shielding

1988-07-15

1989-10-03

Envall, Jr., Roy N.

Electricity: electrical systems and devices

Miscellaneous

H05K 900

Patent

active

048720909

ABSTRACT:
The connection and shielding system for modular RF circuits encases modular circuitboards (10) with five-sided enclosures (11). The sixth side of each enclosure is provided by the top ground plane of a base circuitboard (20) that supports and electrically interconnects the components of the modular circuitboards (10). Enclosures (11) are fixed to a grounded metal socket formed by fence strips (22) and metal inserts (23) which form upwardly open slots including yieldable longitudinal gaskets (50). Gaskets (50) yieldably grip the open end of enclosures (11) and seal them against escaping radiation. Further radiation shielding is provided about the base circuitboard (20) by the fact that the conductive signal traces provided in it are sandwiched between two continuous ground planes and run between plated-through vias joining the ground planes. The ends of each enclosure are provided with double wall baffles (17, 18) which provide airflow to the interior and RFI shielding through offset open apertures (13).

REFERENCES:
patent: 2753390 (1956-07-01), Feketics
patent: 4138711 (1979-02-01), Bremenour et al.
patent: 4717216 (1988-01-01), Hornak

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