Microphone coupler for a communication device
View Patent ↗The invention provides a communication device comprising: a cover; a printed circuit board; a microphone on the printed circuit board; an antenna located at least in part within the cover; and a RF shield can shaped to fit over the microphone about the PCB. In the device, the cover is shaped to enclose the PCB and the RF shield can. The cover provides pressure on the RF shield can to press inward on the microphone to fixedly attach it to the PCB.
1. A communication device comprising:
a printed circuit board (PCB) having a conductive pad;
a microphone having a cylindrical body;
a RF shield can shaped to fit over the cylindrical body of the microphone having an opening for sound to reach the microphone; and
a cover shaped to enclose the PCB and the RF shield can, the cover positioned to press on the microphone to fix the microphone in position on the conductive pad on the PCB and having an internal cavity defined by a set of walls, the cavity shaped to receive the RF shield can to hold the RF shield can in place over the microphone.
2. The communication device as claimed in claim 1 , wherein the cavity defined in the cover is shaped to snugly receive the cylindrical body.
3. The communication device as claimed in claim 1 , wherein the set of walls are lined with a metallized material making contact with the RF shield can.
4. The communication device as claimed in claim 1 , further comprising:
a RF gasket shaped to contact a bottom edge of the RF shield can, the gasket being located between the PCB and the RF shield can; and
an electrical connection in the PCB contacting the RF gasket to complete a ground path for the RF shield can to a ground connection in the PCB.
5. The communication device as claimed in claim 1 , further comprising:
a microphone boot fitted to cover one of the microphone and the RF shield can.
6. The communication device as claimed in claim 5 , further comprising a gasket located in the space between the cover and the boot.
7. The communication device as claimed in claim 1 , further comprising:
a Helmholtz cavity located above the microphone.
8. The communication device as claimed in claim 7 , wherein the Helmholtz cavity is defined by a space located immediately underneath the cover.
9. The communication device as claimed in claim 1 , further comprising a gasket located on a surface of the microphone having the opening and between the surface and the RF shield.
10. A communication device comprising:
a printed circuit board (PCB) having a conductive pad;
a microphone having an oblong body located on the printed circuit board;
a RF shield can providing an RF shield, the RF shield can shaped to fit snugly over the oblong body of the microphone having an opening for sound to reach the microphone;
a cover shaped to enclose the PCB and the RF shield can, the cover positioned to press on the microphone to fix the microphone in position on the conductive pad on the PCB and having an internal cavity defined by a set of walls, the cavity shaped to receive the RF shield can to hold the RF shield can in place over the microphone; and
an antenna located at least in part within the cover.
11. The communication device as claimed in claim 10 , wherein the cover further comprises:
an internal cavity defined by a set of walls, the cavity shaped to snugly receive the RF shield can.
12. The communication device as claimed in claim 11 , wherein the set of walls are lined with a metallized material.
13. The communication device as claimed in claim 10 , further comprising:
a RF gasket shaped to contact a bottom edge of the RF shield can, the gasket being located between the PCB and the RF shield can; and
an electrical connection in the PCB contacting the RF gasket to complete a ground path for the RF shield can to a ground connection in the PCB.
14. The communication device as claimed in claim 13 , further comprising:
a microphone boot fitted to cover one of the microphone and the RF shield can.
15. The communication device as claimed in claim 14 , further comprising a gasket located in the space between the cover and the boot.
16. The communication device as claimed in claim 10 , further comprising:
a Helmholtz cavity located in a space located immediately below the cover.
17. The communication device as claimed in claim 10 , wherein the RF shield can is metallic.
18. The communication device as claimed in claim 10 , further comprising a gasket located on a surface of the microphone having the opening and between the surface and the RF shield.