Investigation of penetration ability of UWB antennas in near-field sensing applications
Paper i proceeding, 2012

Characterization of antennas in far-field applications, both in Line-Of-Sight (LOS) applications (such as in radar systems, point-to-point communications, satellite communications, radio telescopes, etc.) and multipath environment applications (such as mobile communications, indoor communications and indoor geolocations, etc.), is well defined and can be evaluated by well-developed measurement techniques. However, it is still not established how to characterize antennas in near-field sensing applications, where most of the characteristics of antenna in far-field applications are not valid anymore. In this paper, we investigate the characteristics of antennas in near-field sensing applications. The penetration ability, both in time-domain and in frequency-domain is introduced and evaluated. Three UWB antennas, with both simulated and measured results are presented here to demonstrate and evaluate the penetration ability, and the difference from the far-field characteristics, such as the directivity. It is concluded that the higher directivity in far-field does not guarantee a deeper penetration in near-field.

Författare

Aidin Razavi

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

Jian Yang

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Antennsystem

Proceedings of 6th European Conference on Antennas and Propagation, EuCAP 2012. Prague, 26-30 March 2012

791-795

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/EuCAP.2012.6205888

ISBN

978-145770918-0