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:
Nov. 13, 2007
Filed:
Jan. 21, 2005
Clark T.-c. Nguyen, Arlington, VA (US);
Sheng-shian LI, Ann Arbor, MI (US);
Clark T.-C. Nguyen, Arlington, VA (US);
Sheng-Shian Li, Ann Arbor, MI (US);
The Regents of the University of Michigan, Ann Arbor, MI (US);
Abstract
High-Q micromechanical resonator devices and filters utilizing same are provided. The devices and filters include a vibrating polysilicon micromechanical 'hollow-disk' ring resonators obtained by removing quadrants of material from solid disk resonators, but purposely leaving intact beams or spokes of material with quarter-wavelength dimensions to non-intrusively support the resonators. The use of notched support attachments closer to actual extensional ring nodal points further raises the Q. Vibrating micromechanical hollow-disk ring filters including mechanically coupled resonators with resonator Q's greater than 10,000 achieve filter Q's on the order of thousands via a low-velocity coupling scheme. A longitudinally mechanical spring is utilized to attach the notched-type, low-velocity coupling locations of the resonators in order to achieve a extremely narrow passband.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile