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:
Jul. 28, 2009
Filed:
Jun. 19, 2006
Applicant:
Hirad Samavati, Santa Clara, CA (US);
Inventor:
Hirad Samavati, Santa Clara, CA (US);
Assignee:
Atheros Communications, Inc., Santa Clara, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H01P 5/10 (2006.01); H03H 11/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
A quasi-balun circuit for receiving an unbalanced input and providing signals to a balanced-input low noise amplifier (LNA) is provided. Notably, this quasi-balun circuit can provide a phase difference between the positive and the negative terminals of the LNA that is greater than 90 degrees, but less than 180 degrees. In one embodiment, the quasi-balun circuit can provide a phase difference of approximately 135 degrees. To provide this functionality, the quasi-balun circuit includes a passive, reactive network coupled between the unbalanced input and the LNA.