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Dual Polarized Wideband Feed with Cross-Polarization Reduction and Compensation Proprieties for Compact Antenna Test Range

Technical Publications
11/14/2014

Measurement applications in a Compact Antenna Test Range (CATR) often require low cross-polarization or high polarization purity of the Quiet Zone (QZ). This requirement is often the main motivation for choosing the more complex and thus expensive compensated dual reflector system as opposed to the simpler and cheaper single reflector system.

Uncertainty Analysis of Spherical Near Field Antenna Measurement System at VHF

Technical Publications
11/14/2014

This paper presents parts of investigations done in a VHF spherical Near-Field system in order to estimate measurement uncertainties. First is briefly presented the monoprobe Near-Field system and uncertainties estimations challenges due to low frequencies. Then are described the specific and appropriated approaches for the considered errors terms. Classical pattern comparison is used.

Investigation of Echo Suppression Efficiency in Spacecraft Near Field Measurement Scenarios

Technical Publications
11/14/2014

Measurement post-processing techniques based on spatial filtering have been presented as promising tools for the mitigation of echo’s deriving from the measurement environment in regular Near Field (NF) measurement scenarios [1]-[2].

Verification of Complex Excitation Coefficients from Measured Space Array Antenna by the Equivalent Current Technique

Technical Publications
11/14/2014

In this paper the inverse-source technique or source reconstruction technique has been applied as diagnostic tool to determine the complex excitation at sub array and single element level of a measured array antenna [1]-[5].

The Missing Link between Numerical Simulation and Antenna Measurements with Application to Flush Mounted Antennas

Technical Publications
11/14/2014

Computational Electromagnetics (CEM) solvers are important engineering tools for supporting the evaluation and optimization of antenna placement on larger complex platforms. Due to the conclusiveness and high reliability of actual measured data, antenna measurements are required for the final validation of most systems containing an antenna.

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