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:
Dec. 03, 2013
Filed:
Nov. 25, 2008
Sankaran Aniruddhan, San Diego, CA (US);
Chiewcharn Narathong, Laguna Niguel, CA (US);
Ravi Sridhara, San Diego, CA (US);
Babak Nejati, San Diego, CA (US);
Sankaran Aniruddhan, San Diego, CA (US);
Chiewcharn Narathong, Laguna Niguel, CA (US);
Ravi Sridhara, San Diego, CA (US);
Babak Nejati, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
Method and apparatus for configuring a transmitter circuit to support linear or polar mode. In the linear mode, a baseband signal is specified by adjusting the amplitudes of in-phase (I) and quadrature (Q) signals, while in the polar mode, the information signal is specified by adjusting the phase of a local oscillator (LO) signal and the amplitude of either an I or a Q signal. In an exemplary embodiment, two mixers are provided for both linear and polar mode, with a set of switches selecting the appropriate input signals provided to one of the mixers based on whether the device is operating in linear or polar mode. In an exemplary embodiment, each mixer may be implemented using a scalable architecture that efficiently adjusts mixer size based on required transmit power.