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:
Aug. 17, 2010
Filed:
Apr. 14, 2008
Applicants:
Hamid Reza Salehi, Wallingford, CT (US);
Teppo M. Lukkarila, Wallingford, CT (US);
Inventors:
Hamid Reza Salehi, Wallingford, CT (US);
Teppo M. Lukkarila, Wallingford, CT (US);
Assignee:
Radio Frequency Systems, Inc., Meriden, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P 1/20 (2006.01); H01P 7/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A combline filter has a ceramic resonator disposed inside at least one cavity wall. Because the resonator is implemented as a hollow rod, a tuning element may be inserted into an opening on the top of the rod to tune its frequency. A mounting element, inserted into an opening on the bottom of the rod secures its position inside a cavity resonator. Instead of soldering the resonator to the filter's walls, the resonator is supported above a bottom or side wall of the cavity resonator.