Noncontiguous LTE channel amplification using a multilevel outphasing transmitter

Conference: GeMiC 2014 - German Microwave Conference
03/10/2014 - 03/12/2014 at Aachen, Germany

Proceedings: ITG-Fb. 246: GeMiC 2014

Pages: 4Language: englishTyp: PDF

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Authors:
Hone, Thomas M.; Aref, Ahmed F.; Guan, Junqing; Negra, Renato (Mixed-Signal CMOS Circuits, UMIC Research Centre, RWTH Aachen University, Aachen, Germany)

Abstract:
This paper presents a multilevel outphasing transmitter that is capable of amplifying noncontiguous LTE channels. Two 1.4 MHz LTE signals separated by 5 MHz are amplified concurrently using a multilevel outphasing transmitter that is implemented using 10 W GaN devices at 2.1 GHz. An ACPR performance better than -53 dBc is obtained for both 1.4 MHz LTE channels, while delivering 1 W average output power without requiring any form of predistortion.