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:
Jul. 09, 2002
Filed:
Dec. 20, 2000
The Board of Trustees of the University of Illinois, Urbana, IL (US);
Abstract
A MEM capacitor having a capacitance plate nearer a movable plate than a separate bias plate. Voltage potential between the bias plate and movable plate determines the value of capacitance between the movable plate and the capacitance plate. In a preferred MEM capacitor, the movable plate is suspended over two fixed plates, a bias plate and a capacitance plate. The movable plate is disposed opposite both the bias plate and the capacitance plate. A distance between opposing surfaces of the capacitance plate and the movable plate is less than a distance between the bias plate and the capacitance plate. Preferably, the relative difference in distances between the plates is accomplished by a mechanically suspended movable plate that is shaped to have portions in at least two separate planes.