Partners: SP Swedish National Testing and Research Institute, Sony Ericsson Mobile Communications
Ph.D student: Kristian Karlsson (SP AB)
Supervisor: Per-Simon Kildal, Chalmers and Ilja Belov, Jönköping University
Industrial mentor: Jan Carlsson, SP Swedish National Testing and Research Institute
Status: Ongoing
Description:
A mobile phone is not only a device for making phone calls; it also offers a number of other functions such as a digital camera, MP3 player, Bluethooth, diversity and MIMO antennas. All these sub-systems compete about the already limited space inside the shell of the mobile. From an antenna engineer’s point of view, this is a problem: at one hand the antenna is affected by its nearby environment in the phone and, on the other hand, the antenna might interfere with other sub-systems in the phone, i.e. EMC problems.
In this project a general method for describing how the antenna is affected by nearby objects and how the antenna might interact with other objects is developed. The purpose is to use the method for guidance and optimization of the geometrical layout and for studying and improving the antenna robustness in a given environment.
The most important parameters to investigate are the antenna efficiency and impedance, and for EMC problems, the transfer function (S21). These parameters will during the project be estimated as function of geometry, materials etc. These parameters will be studied both with full wave solvers, measurements and circuit simulators.