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:
May. 04, 2021
Filed:
Dec. 27, 2017
Nec Corporation, Tokyo, JP;
Yoshiaki Doi, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
In an amplification apparatus according to the present disclosure, a combining unit combines an output signal of a first amplifier provided at a first branch with an output signal of a second amplifier provided at a second branch and outputs the combined signal. A non-linearity compensation unit multiplies an input baseband signal by a non-linearity compensation coefficient for compensating non-linearity of the entire apparatus, a first deviation compensation unit multiplies a first branch signal by a first deviation compensation coefficient for compensating an inter-branch deviation, and a second deviation compensation unit multiplies a second branch signal by a second deviation compensation coefficient for compensating the inter-branch deviation. A compensation coefficient calculation unit calculates the non-linearity compensation coefficient, the first deviation compensation coefficient, and the second deviation compensation coefficient based on the input baseband signal and a feedback baseband signal obtained by feeding back the combined signal.