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. 07, 2009
Filed:
Dec. 20, 2006
Applicants:
Tsung-yuan Hsu, Westlake Village, CA (US);
Randall L. Kubena, Oak Park, CA (US);
Inventors:
Tsung-Yuan Hsu, Westlake Village, CA (US);
Randall L. Kubena, Oak Park, CA (US);
Assignee:
HRL Laboratories, LLC, Malibu, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 9/13 (2006.01); H03H 9/205 (2006.01); H03H 9/56 (2006.01); H03H 3/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
In one embodiment, a cascaded monolithic crystal filter is provided. A first filter includes two resonators having a pair of electrodes with the monolithic crystal between. At least one electrode has a periphery which includes a feature capable of shifting a frequency associated with an anharmonic mode in the filter. The filter has a second resonator acoustically coupled to the first resonator. A second filter is cascaded with the first filter. The second filter includes a pair of acoustically coupled resonators.