1994 Technical Papers

Efficient Antenna Testing Using Current Antenna Test Systems

Authors: A. Renee Koster, Rodolfo Munoz
Publication: AMTA 1994
Copyright Owner: NSI-MI Technologies

Accurate, fast, and cost effective antenna test equipment is necessary to meet many programs' measurement requirements and schedule and budget constraints. Testing time may be significantly reduced by measuring multiple channels of data simultaneously. Further time savings are realized via the electronic storage of data, which allows easy pattern overlays and changes in the page setup parameters. Electronic storage of data also allows the user to accurately ascertain test parameters. Test data for a dual band, multi-channel antenna measured with the Scientific Atlanta 1590 Pattern Recorder and multi-channel 1795 Microwave Receiver is presented. This antenna has transmit and receive ports, multiple polarization capability, data and tracking channel outputs, and multiple frequency bands. The substantial savings in testing costs are estimated.

 

Cross-Polarized Pattern Measurements on Point-Source Compact Ranges

Author: Doren W. Hess
Publication: AMTA 1994
Copyright Owner: NSI-MI Technologies

Earlier measurement results are reviewed to understand the result that cross-polarized patterns agree well when compared between a point-source compact range and spherical near -field scanning. By taking account of the symmetry of the aperture distribution, one can see how the cross-polarized pattern can be affected only moderately by the classic polarization feature of an offset reflector geometry.

 
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