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. 08, 2020
Filed:
Sep. 24, 2019
Sercomm Corporation, Taipei, TW;
Kun-Lin Chiang, Taipei, TW;
Jia-Ming Chen, Taipei, TW;
Sercomm Corporation, Taipei, TW;
Abstract
A digital pre-distortion circuit and a digital pre-distortion method are provided. In the method, pre-distortion, digital-to-analog conversion and an amplifying process are performed on an input signal in sequence, to generate an output signal. A first bandwidth of the input signal after the pre-distortion is greater than a second bandwidth of the input signal after the digital-to-analog conversion. Signals outside the second bandwidth are filtered out from the output signal, to generate a second output signal. A third output signal, which is a signal after a pre-distorted signal is amplified, is estimated according to the pre-distorted signal and the second output signal. The pre-distorted signal is a signal after the pre-distortion is performed on the input signal. A third bandwidth of the third output signal is greater than the second bandwidth. Parameters of the pre-distortion can be determined according to the third output signal and the pre-distorted signal.