Condenser microphone

Details Condenser microphone Condenser microphone

2008-07-08

2011-11-15

Tran, Long (Department: 2829)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Housed microphone

C162S163000, C162S184000, C162S186000, C162S398000

Reexamination Certificate

active

08059850

ABSTRACT:
An exemplary condenser microphone includes a printed circuit board, a first via, a second via, and a number of through holes. The first and second vias are formed in the printed circuit board for the signal line and ground line respectively passing therethrough. The through holes are formed surrounding the first and second vias. Inner walls of the through holes are coated with a conductive material.

REFERENCES:
patent: 2009/0257613 (2009-10-01), Khamashta et al.

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