Patent ID: 6643380
Filing Date: 2003-11-04
Classification: H04R

Abstract:
A microphone module having a microphone capsule, a printed circuit board comprising a preamplifier, to which circuit board a lateral edge of the microphone capsule is attached, and a shield device for the circuit board,characterised in that the printed circuit board (4) contains components (8) and their connection conductors on one side only, while its other side is provided with a continuous metal lamination coating (12), and that the shield device, in the form of a trough or tub (6), closed on at least one side thereof, is formed by a shielding metal sheet, and is arranged above the component fitting side of the printed circuit board (4) in such a way that the opposite side of the trough is closed off by the microphone capsule (2), and that the shielding trough (6) is soldered at its edge to the lamination coating (12) of the printed circuit board in a manner which is tight against interference scatter (soldered seams 18, 20).