NDLI: Electro-optical-sensor for near-field measurements of large antennas

Content Provider	IEEE Xplore Digital Library
Author	Thiele, L. Geise, R. Spieker, H. Schüür, J. Enders, A.
Copyright Year	2010
Description	Author affiliation: Institut für Elektromagnetische Verträglichkeit, Technische Universität Braunschweig Braunschweig, Schleinitzstraße 23, 38106 Braunschweig, Germany (Thiele, L.; Geise, R.; Spieker, H.; Schüür, J.; Enders, A.)
Abstract	Near-field measurements are an effective tool for determining antenna far-field patterns. Small electro-optical E-field sensors offer good possibilities for these kinds of measurements, because of their small size and their little influence on the antenna under test. In this paper we present a lithiumniobate-based electro-optical field sensor with a minimum sensitivity down to 20 mV/m, which is suitable not only for antenna measurements but also for small devices, where testing power is limited, such as small enclosures like laptops or electronic control units. The functionality and accuracy of the sensor system is demonstrated with an aperture scan of a large pyramidal horn antenna. Measurements correspond well to the known theoretical description of the electric field. Additionally, far-field transforms of the measured data between 300 MHz and 3 GHz show a good agreement with direct far-field measurements at an open area test site (OATS).
Starting Page	1
Ending Page	5
File Size	515093
Page Count	5
File Format	PDF
ISBN	9781424464319
e-ISBN	9788476534724
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-04-12
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	EurAAP
Subject Keyword	Antenna measurements Power measurement Portable computers Area measurement Electronic equipment testing Apertures Size measurement Sensor systems Electrooptic devices Open area test sites
Content Type	Text
Resource Type	Article

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