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Aperture usage is one of the most important problem in reflector-based compact antenna test range(CATR). Single reflector CATR provides very low aperture usage, normally 30%, because of the effects of edge diffraction. In order to solve this problem, serrated edges and rolled edges are generally chosen along the reflector's edge to reduce the edge diffraction field inside quiet zone(QZ) of the CATR...
A tri-reflector Compact Antenna Test Range (CATR) system which operates at 300GHz is modeled and verified in this work. An efficient Gaussian Beam (GB) analysis method based on point matching expansion technique is proposed to evaluate the predicted quiet zone performance of the CATR system. Experimental result shows that the amplitude ripple within the quiet zone is less than 1.1dB while the phase...
An analytic model with different levels of cross-polarization for Gaussian feed is proposed to facilitate a general investigation of the cross-polarization in CATR's quiet zone. Simulation results based on GRASP are shown how different levels of cross-polarization of Gaussian feed affects the cross-polarization of the quiet zone in the proposed CATR.
The Compact Antenna Test Range (CATR), which generates a pseudo-plane wave in a very short distance, is commonly employed to measure electrically large aperture antennas for the applications in space remote sensing and radio astronomy. With the increasing operating frequencies, the design of a CATR becomes a technical challenge. This paper presents the designs of two tri-reflector CATRs operating...
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