Title :
Phase-hologram-based compact RCS test range at 310 GHz for scale models
Author :
Lönnqvist, Anne ; Mallat, Juha ; Räisänen, Antti V.
Author_Institution :
MilliLab Radio Laboratory, Helsinki University of Technology
fDate :
6/1/2006 12:00:00 AM
Abstract :
A compact radar cross section (RCS) test range based on a phase hologram has been developed for scale-model measurements. The phase hologram converts the feed-horn radiation to a plane wave needed for RCS determination. The measurements are performed at 310 GHz using continuous-wave operation. A monostatic configuration is realized using a dielectric slab as a directional coupler. The main advantage of a scale-model RCS range is that the dimensions of radar targets are scaled down in proportion to the wavelength. Therefore, RCS data of originally large objects can be measured indoors in a controlled environment. Test objects such as metal cylinders and simplified targets have been measured. The feasibility of the phase-hologram RCS range has been verified. The operation and measurement results of the monostatic measurement range are reported here. A comparison with simulated results is also included
Keywords :
CW radar; directional couplers; holography; radar cross-sections; 310 GHz; compact radar cross section test range; continuous wave operation; dielectric slab; directional coupler; feed-horn radiation; metal cylinders; monostatic configuration; phase hologram; plane wave; radar targets; scale-model measurements; Antenna measurements; Computational modeling; Computer simulation; Dielectric measurements; Phase measurement; Predictive models; Radar cross section; Submillimeter wave propagation; Testing; Wavelength measurement; Compact range; hologram; quiet zone; radar cross section (RCS); scale-model measurements;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2006.875296
