Radiotelephones with shielded microphones

Details Radiotelephones with shielded microphones Radiotelephones with shielded microphones

1997-05-09

1999-08-10

Chin, Wellington

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455 90, 455351, H04Q 732

Patent

active

059373610

ABSTRACT:
Radiotelephones with electrically and acoustically shielded microphones which have a conductive elastomer grommet positioned intermediate of the housing and the printed circuit board is disclosed. The grommet is sized and configured to hold the microphone therein. The grommet provides a continuous shield along the receiving signal path defined by the length of the microphone, any associated signal connector, and the printed circuit board.

REFERENCES:
patent: 4187481 (1980-02-01), Boutros
patent: 5613221 (1997-03-01), Hunt
patent: 5621363 (1997-04-01), Ogden et al.
patent: 5682418 (1997-10-01), Ide
patent: 5732361 (1998-03-01), Liu

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