Electricity: electrical systems and devices – Miscellaneous
Patent
1988-08-19
1990-03-27
Tolin, Gerald P.
Electricity: electrical systems and devices
Miscellaneous
206328, 361220, 361395, H05K 900
Patent
active
049126040
ABSTRACT:
The invention relates to an RF-shielded hybrid circuit which comprises a printed circuit board (1) of an insulating material, with foils on both sides, components placed on one side of the printed circuit board, and an RF-shield housing (5) made of metal sheet and fitted around at least part of the circuit. It is the object of the invention to provide an RF-shield which can be manufactured automatically and which at the same time ensures a relatively simple and compact structure. In order to achieve this, the RF-shield for the circuit is made up on the one hand of a cup-like cover (5) the peripheral area of which extends substantially around the edge of the printed circuit board (1), with the exception of the area of the connectors (2) of the printed circuit board, and which is placed over the components, and on the other hand of an earth foil (2a) which faces away from the components of the printed circuit board and is soldered by its edge to the peripheral area (5a) of the cover (5).
REFERENCES:
patent: 4386388 (1983-05-01), Beun
patent: 4401351 (1983-08-01), Record
patent: 4415983 (1983-11-01), Lachmann
patent: 4494095 (1985-01-01), Noji
patent: 4739453 (1988-04-01), Kurokawa
patent: 4811165 (1989-03-01), Currier
Nokia-Mobira Oy
Tolin Gerald P.
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