Patent ID: 11912564
Assignee: KNOWLES ELECTRONICS, LLC
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 9:
10. A sensor package comprising:
a printed circuit board including at least four layers, the at least four layers including a bottom layer and a top layer opposite the bottom layer, the printed circuit board including a sound port comprising an aperture running through all four layers of the printed circuit board;
a microelectromechanical systems transducer mounted on the top layer of the printed circuit board, the microelectromechanical systems transducer comprising a diaphragm and a back plate, the diaphragm acoustically coupled to the sound port; and
an inductor coupled to the microelectromechanical systems transducer, where the inductor is configured as a single layer trace on an inductor layer within the printed circuit board, the inductor layer being one of the at least four layers, the inductor layer comprising a layer closer to the bottom layer than the top layer of the at least four layers,
wherein the microelectromechanical systems transducer comprises a diaphragm and a back plate, and
wherein the sensor package comprises a sound port acoustically coupled to the diaphragm,
wherein no inductor configured as a single layer trace within the printed circuit board and electrically coupled to the microelectromechanical systems transducer overlaps, in a direction perpendicular to a plane of the inductor layer, with any other inductor configured as a single layer trace within the printed circuit board and electrically coupled to the microelectromechanical systems transducer, and
wherein the sound port passes between traces of the inductor.