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Analysis of nonlinear distortion in phased array transmitters

Christian Fager (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; Katharina Hausmair (Institutionen för elektroteknik, Kommunikationssystem) ; Koen Buisman (Institutionen för mikroteknologi och nanovetenskap, Mikrovågselektronik) ; K. Andersson ; E. Sienkiewicz ; D. Gustafsson
Proceedings of the 2017 International Workshop on Integrated Nonlinear Microwave and Millimetre-Wave Circuits, INMMiC 2017 (2017)
[Konferensbidrag, refereegranskat]

This paper investigates nonlinear distortion effects in active antenna phased array transmitters. Using a nonlinear modeling technique, the joint interactions between power amplifiers and antennas are investigated in detail. Numerical simulations based on a 28 GHz GaN MMIC PA and a 64-element antenna array are used to exemplify the use of the proposed technique in a typical 5G application. The results show that the antenna mutual coupling will cause the individual PA compression characteristics and hence the far field distortion to depend significantly on beam steer angle.

Nyckelord: 5G , Active antennas , Nonlinear distortion , Phased array antennas , Power amplifiers



Denna post skapades 2017-07-03.
CPL Pubid: 250319

 

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