Analysis of the GNSS Smartphone Antennas


With the release of Android N, Google announced the availability of GNSS Raw data from the mobile phone. This opens up to the broader prospective for research, analysis and enhancement of the positioning quality in mobile phones. In order to perform cm level accuracy with the smartphone devices, carrier phase observations must be used. But, cycle slips and missing observations are some of the major issues to be addressed and resolved. The low quality smartphone antenna is the root cause of such anomalies.

In this thesis work, we invite student to perform theoretical research, investigate and analyze the quality of smartphone antennas. The work also involves the performance analysis and comparison of different smartphones.
The important steps for this thesis includes:

•    Understanding the characteristics of smartphone antennas e.g. antenna radiation pattern etc.
•    Understanding and analyzing the effect of other interferences (e.g. Wi-Fi, Bluetooth, and LTE) on  antenna performance and positioning accuracy
•    Analysis of Antenna performance with different smartphone orientations and their comparison
•    Study Antenna calibration, propose and implement one technique for Smartphone calibration (e.g. calibration by tuning, calibration by transmitting signal from a UAV)
•    Discussion and Documentation of the results

What we expect from you:

•    Having a good  knowledge in Antenna theory
•    Basic knowledge about GNSS
•    Work experience with High frequency tools e.g. HFSS or CST microwave

Duration: 4-6 Months

Start Date: Immediately

Contact Person:

M.Sc. Himanshu Sharma
Institute of Space Technology and Space Applications (ISTA)
Faculty of Aerospace Engineering (LRT)
Universität der Bundeswehr München
Werner-Heisenberg-Weg 39, 85577 Neubiberg, Germany
Phone: +49 89-6004-2546, Fax: +49 89-6004-3019
Email:; Building 61, Room 1112