Dissertationen (eigene und begutachtete):
"Thermographische Untersuchung elektrischer Nahfelder kompakter und integrierter Antennen";
Betreuer/in(nen), Begutachter/in(nen): G. Magerl, E. Bonek;
Institut für Elektrische Mess- und Schaltungstechnik,
The thesis describes the investigation of a new measurement method fulfilling the actual needs of the industrial and mobile communication engineering and having impact to the design of especially integrated antennas. Here, the electrical fieldstrength’s near-field components of resonant and radiating structures are of major importance, determining e.g. efficiency and background noise. The new method developed utilizes dielectric power dissipation due to orientational polarizability in detector materials. Inserted into the near-field region close to the antenna structure, the detector material causes losses and is warmed up. This temperatur is detected by thermophotography showing the local field-strength as temperature. In order to get more than qualitative results the detector materials have been investigated and a calibration method was found and verified, the impact of measurement to the measurand was evaluated. To employ the method for actual demands, a demonstrator setup was built and tested. As an example for usage the design of antennas for mobile communication devices was shown by means of this new measurement technology. These and further results give evidence to the impact of the new method to the actual needs of the engineers designing communication devices.
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.