EDGE Power Amplifier ACPR Improvement with Inter-Stage Pre- and Postdistortion Linearization
Conference: GeMIC 2008 - German Microwave Conference
03/10/2008 - 03/12/2008 at Hamburg-Harburg, Germany
Proceedings: GeMIC 2008
Pages: 4Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
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.