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. 27, 2016
Filed:
Oct. 29, 2013
Nec Corporation, Tokyo, JP;
Kazuaki Kunihiro, Tokyo, JP;
NEC CORPORATION, Tokyo, JP;
Abstract
When frequency allocation for a plurality of frequencies is in an intra-band CA relationship, a first amplifier is operated in class B, a second amplifier is operated in class C, and a power modulator is caused to supply a constant voltage to the first and second amplifiers so as to operate as a Doherty-type power amplifier. In addition, when the frequency allocation for the plurality of frequencies is in an inter-band non-contiguous CA relationship, the first and second amplifiers are operated in class B, and the power modulator is caused to supply a voltage proportional to the amplitude component of an input signal to the first and second amplifiers so as to operate as a power amplifier based on an ET system.