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.

Date of Patent:
Sep. 27, 2016

Filed:

Feb. 19, 2010
Applicants:

Johan Lucas Gertenbach, Cambridge, GB;

Timothy John Newton, Suffolk, GB;

Nicolas Sornin, La Tronche, FR;

Michael John Story, Cambridgeshire, GB;

Inventors:

Johan Lucas Gertenbach, Cambridge, GB;

Timothy John Newton, Suffolk, GB;

Nicolas Sornin, La Tronche, FR;

Oliver George Hylton Madge, Cambridge, GB;

Michael John Story, Cambridgeshire, GB;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 21/12 (2006.01); H01F 21/10 (2006.01); H01F 30/14 (2006.01); H03B 5/08 (2006.01); H03B 5/18 (2006.01); H03B 11/08 (2006.01); H03J 3/20 (2006.01);
U.S. Cl.
CPC ...
H03J 3/20 (2013.01); H03J 2200/15 (2013.01);
Abstract

A variable inductor structure for varying an inductance responsive to a digital tuning signal, comprising: a first inductor; a second, adjustable, inductor; and a digital control mechanism configured to receive the digital tuning signal and to adjust the effective inductance of the second inductor in response to the digital tuning signal; wherein the second inductor is positioned sufficiently close to the first inductor so as to be capable of altering by mutual inductance the effective inductance of the first inductor in dependence on the digital tuning signal.


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