The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 1990
Filed:
Aug. 19, 1988
Risto Vaisanen, Salo, FI;
Nokia-Mobira Oy, Salo, FI;
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).