Shielded microphone for mobile communications device

摘要

A shielded microphone, and method for shielding a microphone, are provided for use in a communications device having a circuit board and a microphone. The microphone is provided in an electromagnetic shield and a resilient separator is provided over the shield. The device housing is stacked over the separator and shield, while the latter are stacked over the circuit board so that the separator and shield, with microphone there under, are sandwiched between the housing and the circuit board. By this sandwiching the separator is loaded onto the shield to drive the shield directly against the circuit board to make an electrical ground connection therewith, the microphone also being electrically connected to the printed circuit board. The resilience of the separator accommodates the variation in the stacking of the components.

主权项

1. A microphone shielding assembly for use in a communications device, the assembly comprising:
a conductive shield configured to cooperate with a circuit board of the device to enclose a microphone of the device; and a resilient separator positioned to be compressed between the conductive shield and a housing of the device, the separator providing electrical insulation between the conductive shield and the housing; wherein the separator and the shield are configured to cause electrical contact between the circuit board and each of the conductive shield and the microphone, when the housing is positioned to house the assembly and the microphone is enclosed between the circuit board and the conductive shield.