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:
Mar. 14, 2017

Filed:

May. 12, 2015
Applicant:

Qualcomm Incorporated, San Diego, CA (US);

Inventors:

Amirpouya Kavousian, San Jose, CA (US);

Yashar Rajavi, Mountain View, CA (US);

Alireza Khalili, Sunnyvale, CA (US);

Mohammad Bagher Vahid Far, San Jose, CA (US);

Assignee:

QUALCOMM Incorporated, San Diego, CA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 3/04 (2006.01); H03H 7/01 (2006.01); H03F 1/34 (2006.01); H03F 1/56 (2006.01); H03F 3/24 (2006.01); H03H 7/09 (2006.01); H04B 1/18 (2006.01); H03H 7/06 (2006.01);
U.S. Cl.
CPC ...
H03H 7/0123 (2013.01); H03F 1/347 (2013.01); H03F 1/565 (2013.01); H03F 3/245 (2013.01); H03H 7/06 (2013.01); H03H 7/09 (2013.01); H03H 7/1741 (2013.01); H04B 1/18 (2013.01); H03H 2007/013 (2013.01);
Abstract

A method and apparatus are disclosed for filtering a signal, such as a transmit communication signal with a configurable notch filter. The configurable notch filter may attenuate a set of frequencies near a selected notch frequency. In some embodiments, the configurable notch filter may include a variable resistor, a variable capacitor, a first inductor, and a second inductor. The variable resistor may be configured to compensate for resistive losses within the configurable notch filter. The variable capacitor may be configured to determine the set of frequencies to be attenuated.


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