Apparatus for the suppression of electromagnetic interference in an electronic system
AssigneeEricsson Inc.
InventorsPer-Hakan Persson, Nils Rutger Rydbeck
Life of this patent
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Abstract
A conductive strap configured to attach to a circuit board containing a component sensitive to electronmagnetic interference (EMI) and to slidably contact an enclosure having a conductive internal surface can reduce or eliminate EMI in an electronic device. The strap is positioned on the circuit board to shield the sensitive component from EMI. Slidable contact between the shielding strap and the enclosure internal surface renders the strap suitable for almost any enclosure configuration without any design modification.
Claims18
An electronic system shielded from electromagnetic interference comprising:
- a housing having a conductive surface;
- a circuit board enclosed within said housing having a mounting surface, said circuit board including at least one electronic component sensitive to electromagnetic interference and a first grounding site on said mounting surface, and further including a conductive component housing enclosing said at least one sensitive component and a second grounding site on said mounting surface positioned adjacent said component housing;
- and
- a first conductive shielding unit electrically connected to said first circuit board grounding site and configured for slidable contact with said housing conductive surface, and a second conductive shielding unit electrically connected to said second grounding site and configured for slidable contact with said conductive component housing, said first and second shielding units being positioned on said circuit board to shield said device from electromagnetic radiation.
An electronic package comprising:
- a circuit board having a mounting surface, said circuit board including at least one electronic component sensitive to electromagnetic radiation, a conductive component housing enclosing said at least one sensitive component, and first and second grounding sites on said mounting surface, said second grounding site being adjacent said conductive component housing;
- and
- a first conductive shielding unit attached to said first grounding site and configured for slidable contact with a conductive surface of a circuit board housing, and a second conductive shielding unit attached to said second grounding site and configured for slidable contact with said conductive component housing, said first and second shielding units being positioned on said circuit board to shield said sensitive device from electromagnetic radiation.
An electronic package comprising:
- a circuit board having a mounting surface including a peripheral portion;
- at least one electronic component sensitive to electromagnetic radiation attached to said mounting surface;
- a conductive component housing enclosing said at least one electronic component;
- a plurality of grounding sites positioned on said peripheral portion and configured to receive shielding straps;
- and
- a plurality of grounding sites positioned adjacent said conductive component housing and configured to receive shielding straps.
Dependencies are inferred from the claim text.