A contact-less small antenna characterization through impedance modulation

Konferenz: EuCAP 2009 - 3rd European Conference on Antennas and Propagation
23.03.2009 - 27.03.2009 in Berlin, Germany

Tagungsband: EuCAP 2009

Seiten: 3Sprache: EnglischTyp: PDF

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Monsalve, B.; Blanch, S.; Romeu, J.; Jofre, L. (Antennalab, Signal Theory and Communications department, Universitat Politècnica de Catalunya, Jordi Girona, 1-3 Barcelona)

In smalls antennas S-parameters measurements are highly influenced by the measurement equipment as well as the environment. In order to avoid this inconvenience, a wireless and non-invasive characterization setup is required. In this paper a novel contact-less measurement setup is developed based on the Radar Cross Section (RCS) measurement method using impedance modulation. A small (2x2cm2) autonomous and selfpowered communication device is presented as a system able to change the load impedance of the antenna under test (AUT) to produce impedance modulation. The device contains a microprocessor, a switch able to change between three different load impedances and a 5V battery.