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:
Aug. 14, 2018

Filed:

Nov. 23, 2016
Applicant:

Anlotek Limited, London, GB;

Inventors:

Jorgen Staal Nielsen, Calgary, CA;

Richard Nichols, Manhattan Beach, CA (US);

Assignee:

Aniotek Limited, London, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 5/00 (2006.01); H03H 11/12 (2006.01); H03G 3/30 (2006.01);
U.S. Cl.
CPC ...
H03H 11/1208 (2013.01); H03G 3/3042 (2013.01); H03H 2210/015 (2013.01);
Abstract

A variable filter has a signal loop defined between a signal input and a signal output. A plurality of circuit elements connected in the signal loop, the plurality of circuit elements comprising a frequency tunable resonator, and an adjustable scaling block that applies a gain factor that is adjustable in a range that comprises a positive gain and a negative gain. A controller is connected to 1) tune the frequency tunable resonator; and to 2) adjust the gain factor of the adjustable scaling block between a negative gain factor to a positive gain factor providing for variable Q independent of frequency.


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