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:
Oct. 05, 2004
Filed:
Sep. 13, 2002
Karen Hovakimyan, Sunnyvale, CA (US);
Allied Telesyn, Inc., Bothell, WA (US);
Abstract
An apparatus for pre-distorting a signal includes input nodes to receive an in-phase input signal and a quadrature input signal. Feedback nodes receive an in-phase feedback signal and a quadrature feedback signal. Output nodes transmit an in-phase pre-distorted signal and a quadrature pre-distorted signal. A Lagrange interpolation digital pre-distortion circuit is connected to the input nodes, the feedback nodes, and the output nodes. The Lagrange interpolation digital pre-distortion circuit is configured to perform a Lagrange interpolation on the in-phase input signal, the quadrature input signal, the in-phase feedback signal, and the quadrature feedback signal to produce the in-phase pre-distorted signal and the quadrature pre-distorted signal.