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:
Jan. 27, 2015
Filed:
Mar. 01, 2012
Applicant:
Robert Newgard, Central City, IA (US);
Inventor:
Robert Newgard, Central City, IA (US);
Assignee:
Rockwell Collins, Inc., Cedar Rapids, IA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 3/282 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cavity filter having a piezoelectric tuning element is tuned by determining a desired oscillating frequency for the piezoelectric tuning element and applying that frequency through a phase-locked loop. The phase-locked loop maintains the piezoelectric tuning element at the desired frequency.