The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 19, 1999
Filed:
Apr. 03, 1997
Robert Alfred Kubli, Milford, NJ (US);
Gabriel Lorimer Miller, Westfield, NJ (US);
Eric Richard Wagner, South Plainfield, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
In a capacitor microphone system for directional applications, an array of backplates of microphone cells are formed on a printed circuit (PC) board. A continuous strip of diaphragm is employed to cover each backplate. The diaphragm is stretched to create a uniform tension along its length, contributing to the objective of achieving a uniform gain by each microphone cell. In addition, the diaphragm is separated from the backplates by a relatively large distance such that the percentage deviation from such a distance from cell to cell is relatively small, again contributing to the objective of gain uniformity.