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PhD defence by Igor Aleksandrovich Syrytsin


05.11.2019 kl. 12.30 - 16.00


User Effects on Antennas in 5G Mobile Terminals

The main focus of the thesis is to assess, characterize and model the user effects on the 5G mm-wave antennas in the mobile terminals. Furthermore, multiple novel 5G mm-wave antenna designs will be presented in this thesis as well.

However, the proposed antennas/array antennas, for the most part, have been designed for a specific investigation/measurement purpose. Thus, most of the antenna designs presented in this thesis are tailored towards the specific user effect assessment. Multiple novel metrics have also been defined, which include shadowing antenna power ratio (SAPR), shadowing isotropic antenna power ratio (SIAPR), circularly polarized (CP) total scan pattern and CP coverage efficiency, shadowing CDF and 3DSAPR.

With the help of these novel metrics most of the user effects on a 5G mm-wave mobile antenna/antenna array can be characterized. According to the guidelines given in this thesis, a 5G mobile mm-wave antenna array system made from multiple sub-arrays distributed around the chassis can be made relatively immune to the user effects both in data and dual-hand modes. The results from the two measurement campaigns led to a stochastic spatial user shadowing model, which can be directly applied in the link simulator as a 3D radiation pattern.

Assessment Committee
Associate Professor Troels Bundgaard Sørensen, Aalborg University, Denmark (Chairman)
Professor Raj Mittra, University of Central Florida, USA
Professor Quan Xue, South China University of Technology, China

Professor Gert Frølund Pedersen, Aalborg University, Denmark
Associate Professor Shuai Zhang, Aalborg University, Denmark

Associate Professor Ondrej Franek, Aalborg University, Denmark

After the defence there will be a reception at Fredrik Bajers Vej 7A1-112


Free of Charge


Antennas, Propagation and Millimetre-Wave Systems Department of Electronic Systems


Aalborg University, Fredrik Bajers Vej 7B3-104