EDGE Power Amplifier ACPR Improvement with Inter-Stage Pre- and Postdistortion Linearization
Konferenz: GeMIC 2008 - German Microwave Conference
10.03.2008 - 12.03.2008 in Hamburg-Harburg, Germany
Tagungsband: GeMIC 2008
Seiten: 4Sprache: EnglischTyp: PDFPersönliche VDE-Mitglieder erhalten auf diesen Artikel 10% Rabatt
Ibrahim, Irfan; Heuermann, Holger (Department of High Frequency Technologies, University of Applied Science Aachen)
This paper presents the design, optimization, and measured performance of linearized EDGE power amplifier. The linearization is obtained with inter-stage postdistortion and interstage predistortion networks implemented in three-stage EDGE power amplifier. Simulations are performed to characterize PA inter-modulation (IM) distortion and their improvements with the proposed linearization network. The proposed linearized PA was fabricated in HBT technology. The measurement results showed a strong influence of linearization network on PA gain flatness and an improvement of 2.5 dB was achieved in the ACPR performance.