Title :
A measurement system for determining radiation efficiency of a small antenna
Author :
Kabacik, Pawel ; Byndas, Arkadiusz ; Hossa, Robert ; Bialkowski, Marek
Author_Institution :
Inst. of Telecommun., Wroclaw Univ. of Technol., Warsaw
Abstract :
The paper describes a system for measuring radiation efficiency of a small antenna operating alone or in the presence of objects similar to those as in an actual service. The system applies the direct approach to determining the antenna efficiency by measuring the radiated field over the entire sphere surrounding the tested antenna. In order to overcome problems associated with the conventional measuring equipment, the antenna under test is equipped with a miniature built-in VCO signal generator and supported by a low reflectivity dielectric positioner. The positioner is of sufficient size and strength to hold a human head phantom to investigate changes in radiation characteristics when the antenna operates in the presence of a human operator.
Keywords :
antenna radiation patterns; dielectric resonator antennas; signal generators; voltage-controlled oscillators; antenna efficiency; human head phantom; low reflectivity dielectric positioner; measurement system; miniature built-in VCO signal generator; radiation efficiency; small antenna; Antenna measurements; Dielectric measurements; Humans; Imaging phantoms; Position measurement; Reflectivity; Reflector antennas; Signal generators; System testing; Voltage-controlled oscillators;
Conference_Titel :
Antennas and Propagation, 2006. EuCAP 2006. First European Conference on
Conference_Location :
Nice
Print_ISBN :
978-92-9092-937-6
DOI :
10.1109/EUCAP.2006.4585074
