Title :
FM-CW Measuring Technique for Testing Wideband Anechoic Chambers
Author_Institution :
Delft University of Technology, Dept. of Electrical Engineering, Microwave Laboratory, Mekelweg 4, 2628 CD Delft, The Netherlands
Abstract :
The Voltage Standing Wave Ratio and the Antenna Pattern Comparison methods are widely used for the determination of the reflectivity in anechoic chambers. In this paper a reflectivity measuring technique is described based on a transmitted signal with a linear frequency modulation over a large bandwidth. The main advantages of the technique described are the possibility to obtain the spatial distribution of the reflectivities inside the chamber, the quasi-real-time signal processing using existing Fast Fourier Techniques and the visual presentation on a quick-look monitor.
Keywords :
Anechoic chambers; Antenna measurements; Bandwidth; Chirp modulation; Frequency measurement; Reflectivity; Reflector antennas; Testing; Voltage; Wideband;
Conference_Titel :
Microwave Conference, 1981. 11th European
Conference_Location :
Amsterdam, Netherlands
DOI :
10.1109/EUMA.1981.333007