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:
Feb. 05, 2013
Filed:
Jun. 12, 2009
Arthur Ballato, Oceanport, NJ (US);
Arthur Ballato, Oceanport, NJ (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
Though the initial concept of the face-mounted resonator was ahead of fabrication technology, the solidly-mounted resonator (SMR) is now a practical resonator design yielding high Qs in a space-efficient and robust mounting configuration. An agile tunable piezoelectric SMR is now provided with a resonator and alternating stacks of high mechanical impedance and low mechanical impedance, piezoelectric layers advantageously stacked on a substrate with the piezoelectric layers connected to an adaptive circuit that alternates with an external electrical impedance having values anywhere between an open circuit and a short circuit. The piezoelectric Bragg stacks with alternating layers of high and low mechanical impedance and properties made variable via the additional piezoelectric properties of the stack materials overcomes difficulties caused by the limitations of manufacturing techniques, acoustic power leakage and inability to meet the single-frequency, quarter-wavelength criterion due to manufacturing deviations.