Invention Grant
- Patent Title: Filter circuit for an electret microphone
- Patent Title (中): 驻极体麦克风滤波电路
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Application No.: US11956615Application Date: 2007-12-14
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Publication No.: US08085956B2Publication Date: 2011-12-27
- Inventor: Michael Jennings
- Applicant: Michael Jennings
- Applicant Address: US IL Itasca
- Assignee: Knowles Electronics, LLC
- Current Assignee: Knowles Electronics, LLC
- Current Assignee Address: US IL Itasca
- Agency: Fitch, Even, Tabin & Flannery
- Main IPC: H04R25/00
- IPC: H04R25/00 ; H01L27/06
Abstract:
A miniature electret microphone includes an input buffer circuit. The input buffer circuit includes an integrated circuit including a floating ground substrate and a p-n junction. The p-n junction is coupled as a capacitor to a filter circuit of the input buffer circuit.
Public/Granted literature
- US20090154729A1 Filter Circuit for an Electret Microphone Public/Granted day:2009-06-18
Information query
