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:
Nov. 12, 2013

Filed:

Nov. 11, 2011
Applicants:

Swarna L. Navubothu, San Diego, CA (US);

Cheng Zhong, San Diego, CA (US);

Nam V. Dang, San Diego, CA (US);

Xiaohua Kong, San Diego, CA (US);

Inventors:

Swarna L. Navubothu, San Diego, CA (US);

Cheng Zhong, San Diego, CA (US);

Nam V. Dang, San Diego, CA (US);

Xiaohua Kong, San Diego, CA (US);

Assignee:

QUALCOMM Incorporated, San Diego, CA (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H03K 3/03 (2006.01); H03L 7/10 (2006.01);
U.S. Cl.
CPC ...
Abstract

A circuit includes a first path including a first transistor and a first current source. The first transistor is responsive to a tuning voltage. The circuit also includes a tuning voltage range extension circuit responsive to the tuning voltage. The tuning voltage range extension circuit is configured to selectively change current supplied by the first path as the tuning voltage exceeds a capacity threshold of the first transistor.


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