E/M shielded RF circuit board

Details E/M shielded RF circuit board E/M shielded RF circuit board

1990-09-19

1994-03-22

Picard, Leo P.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

174252, 174 35R, 174 35GC, 361711, 361712, 361714, 361760, 361816, 361818, H05K 900

Patent

active

052970078

ABSTRACT:
An improved circuit board having a variety of electronic components mounted thereon and having disposed to the autumn side of the circuit board a backing plate having a variety of thicknesses wherein a thicker portion of the backing plate is disposed near portions of the circuit board or components on the circuit board which are of a higher heat generating nature, the circuit board further having a slot extending through the circuit board and inserted in the slot is a metallic shielding cover which contacts the backing plate. Also disclosed is a method for manufacturing the circuit board.

REFERENCES:
patent: 4306275 (1981-12-01), Miura
patent: 4370515 (1983-01-01), Donaldson
patent: 4385202 (1983-05-01), Spinelli et al.
patent: 4472762 (1984-09-01), Spinelli et al.
patent: 4612566 (1986-09-01), Kowata et al.
patent: 4675784 (1987-06-01), Dahlberg et al.
patent: 4771294 (1988-09-01), Wasilovsky
patent: 4993148 (1991-02-01), Adachi et al.
patent: 5006667 (1991-04-01), Lonka
IBM Disclosure Bulletin, "Heat Sink Assembly for TAB-Mounted Devices", vol. 31, No. 6, Nov. 1988.

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