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:
Aug. 13, 1996
Filed:
Oct. 27, 1994
Ljubisa Ristic, Paradise Valley, AZ (US);
Daniel N Koury, Mesa, AZ (US);
John E Schmiesing, Tempe, AZ (US);
Ronald J Gutteridge, Paradise Valley, AZ (US);
Henry G Hughes, Scottsdale, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
An enclosure (8) for an electronic device (26) such as, for example, an accelerometer. The enclosure (8) includes a conductive semiconductor substrate (12) underlying the electronic device (26), a conductive cap (16) overlying the electronic device (26), and a power supply (25) having one or more outputs (27, 29) each with a substantially fixed potential wherein one output is electrically coupled to the conductive semiconductor substrate (12) and another output to the conductive cap (16). In a preferred embodiment, substrate ( 12 ) and cap (16) are coupled to the same power supply output (27). This coupling substantially eliminates the adverse effects of parasitic capacitances of the substrate (12) and cap (16) to reduce measurement error and EMI when a capacitive accelerometer is used as the electronic device (26).