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US 2011/0254111 A1Published application
Packaged acoustic transducer device with shielding from electromagnetic interference
AssigneeAvago Technologies Wireless IP (Singapore) Pte. Ltd.
InventorsTimothy LECLAIR, Steve MARTIN
Life of this patent
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Abstract
A device includes: a housing structure; lid configured together with the housing structure to define a cavity therein; and at least one acoustic transducer disposed within the cavity, wherein the lid shields the at least one acoustic transducer from exposure to electromagnetic interference from electromagnetic radiation originating outside the device. In some embodiments, the housing structure includes some electrically conductive leads, including a ground lead, and the lid is directly connected to the ground lead.
Claims20
A device, comprising:
- an electrically conductive lead frame having an aperture therethrough, the electrically conductive lead frame including a plurality of leads including at least one ground lead configured to be connected to an electrical ground;
- a semiconductor die including at least one acoustic transducer disposed above the aperture in the electrically conductive lead frame, the at least one acoustic transducer being configured to convert between acoustic energy and an electrical signal;
- an acoustic horn integrally connected to the lead frame, the horn extending from the lead frame and comprising a throat positioned adjacent to the acoustic transducer and a mouth opening at an opposite end of the acoustic horn from the throat;
- an electrically conductive and acoustically transmissive screen disposed over the mouth of the acoustic horn;
- and
- an electrically conductive lid configured together with the base portion of the housing to define a cavity, wherein the acoustic transducer is positioned within the cavity, and wherein the electrically conductive lid is directly connected to the ground lead.
3 more elements
A device, comprising:
- a housing structure including having a base portion integrated with a plurality of electrically conductive leads including at least one ground lead, the housing structure including an aperture extending through a first side thereof;
- an electrically conductive lid configured together with the housing structure to define a cavity therein;
- and
- at least one acoustic transducer disposed within the cavity and disposed above the aperture in the housing structure,
- wherein the electrically conductive lid is directly connected to the ground lead.
2 more elements
A device, comprising:
- a housing structure;
- a lid configured together with the housing structure to define a cavity therein;
- and
- at least one acoustic transducer disposed within the cavity,
- wherein the lid shields the at least one acoustic transducer from exposure to electromagnetic interference from electromagnetic radiation originating outside the device.
2 more elements
Dependencies are inferred from the claim text.