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Characterization of quasi-optical focusing systems at w-band frequencies

 
: Klenner, M.; Zech, C.; Hülsmann, A.; Schlechtweg, M.; Ambacher, O.

45th European Microwave Conference, EuMC 2015. Proceedings : 7-10 September 2015, Paris, France
London: Horizon House, 2015
ISBN: 978-2-8748-7039-2
S.311-314
European Microwave Conference (EuMC) <45, 2015, Paris>
Englisch
Konferenzbeitrag
Fraunhofer IAF ()

Abstract
In this paper we present an experimental method to investigate the imaging properties of quasi-optical focusing sys-tems at frequencies between 75 GHz and 110 GHz. Therefore, a millimeter wave beam which is focused by parabolic mirrors is scanned in 3D by a movable Rx horn antenna. The beam can then be visualized and analyzed using a Gaus-sian beam model. In order to characterize the performance of the quasi-optical system, the minimal spot diameter of the millimeter wave beam at the target is determined. Furthermore, the influence of the Rx horn antenna used for scan-ning the signal is investigated and a calibration method is presented for adequate compensation.

: http://publica.fraunhofer.de/dokumente/N-366329.html