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:
Sep. 17, 2013
Filed:
Dec. 17, 2009
Babak Nejati, San Diego, CA (US);
Yu Zhao, San Diego, CA (US);
Nathan M Pletcher, Encinitas, CA (US);
Aristotele Hadjichristos, San Diego, CA (US);
Puay Hoe See, San Diego, CA (US);
Babak Nejati, San Diego, CA (US);
Yu Zhao, San Diego, CA (US);
Nathan M Pletcher, Encinitas, CA (US);
Aristotele Hadjichristos, San Diego, CA (US);
Puay Hoe See, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Exemplary techniques for performing impedance matching are described. In an exemplary embodiment, the apparatus may include an amplifier (e.g., a power amplifier) coupled to first and second matching circuits. The first matching circuit may include multiple stages coupled to a first node and may provide input impedance matching for the amplifier. The second matching circuit may include multiple stages coupled to a second node and may provide output impedance matching for the amplifier. At least one switch may be coupled between the first and second nodes and may bypass or select the amplifier. The first and second nodes may have a common impedance. The apparatus may further include a second amplifier coupled in parallel with the amplifier and further to the matching circuits. The second matching circuit may include a first input stage coupled to the amplifier, a second input stage coupled to the second amplifier, and a second stage coupled to the two input stages via switches.