Antenna Array for Data Communication in High Speed Machine Tools
Carsten H. Schmidt, Wolfgang K.J. Mahler, and Marcel D. Blech
Institute of Radio Frequency Technology, Universitat Stuttgart
The antenna design for a data communication system operating in a high speed machine tool with up to 40 000 revolutions per minute is presented. Energy is supplied to the sensor and the transmitting unit of the rotor via a low frequency inductive coupling. The sensor data is transmitted at 2.4 GHz utilizing a loop antenna on the rotor. The reception on the stator side is implemented using an antenna array consisting of three dipole antennas, whose receive signals are phase shifted by appropriate microstrip lines first. Then they are combined by a resistive lumped element network. This results in a rotational symmetric receiving characteristic required for continuous data transmission. The antenna system is designed using the electromagnetic field simulation software FEKO and a prototype with a negligible bit error rate for the data transmission is shown.
25th Annual Review of Progress in Applied Computational Electromagnetics
2009
March
259-263
