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. 10, 2010
Filed:
Jul. 31, 2006
Applicant:
Stephen B. Einbinder, Plantation, FL (US);
Inventor:
Stephen B. Einbinder, Plantation, FL (US);
Assignee:
Motorola, Inc., Schaumburg, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/10 (2006.01); H04H 5/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
A tunable narrow band radio frequency (RF) filter () includes an RF input (), an RF output (), a capacitive network (-) for coupling the RF input () with the RF output () and an inductive network (-) for resonating the filter at a predetermined center frequency. A number of semiconductor devices such as varactor diodes () are used for tuning respective capacitors in the capacitive network (-). A single voltage source (V) is used for tuning each one of the respective varactor diodes for moving the resonant frequency of the filter over a substantially wide frequency range.