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:
Oct. 27, 2015
Filed:
Oct. 09, 2013
Applicant:
Analog Devices, Inc., Norwood, MA (US);
Inventors:
Andrew Pye, Somerville, MA (US);
Marc E. Goldfarb, Atkinson, NH (US);
Assignee:
Analog Devices, Inc., Norwood, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03H 7/00 (2006.01); H03B 1/00 (2006.01); H03K 5/00 (2006.01); H03H 11/04 (2006.01); H01F 27/28 (2006.01); H03H 7/01 (2006.01); H03H 7/09 (2006.01);
U.S. Cl.
CPC ...
H03H 11/04 (2013.01); H01F 27/2804 (2013.01); H03H 7/01 (2013.01); H03H 7/0153 (2013.01); H03H 7/09 (2013.01);
Abstract
In one example embodiment, a programmable filter is provided, including a plurality of variable-inductance networks and a plurality of variable-capacitance networks. The programmable filter may be implemented in a classical filter topology, with variable-capacitance networks replacing discrete capacitors and variable-inductance networks replacing discrete inductors. An example variable-inductance network comprises a primary inductor with an intermediate tap, and secondary inductor connected at the intermediate tap, with switches for selecting an inductance.