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The polarization purity of an antenna system is an important performance parameter, particularly in dual-polarized systems, where depolarization can prevent operating objectives from being achieved. Accurace polarisation testing, requires a significantly higher polarisation purity of the test system than the test object. The Compact Antenna Test Range (CATR) is widely used for antenna system testing...
An elegant P-band ground station antenna for Galileosat application has been designed, manufactured, and has undergone acceptance testing as reported in. This paper summarizes the initial antenna design considerations, acceptance testing results and reports on the preliminary results of the in-orbit tests performed using this antenna and the MSG-2 satellite, which has onboard a SAR transponder.
A feed for a compact antenna test range operating in P-band in single polarization has been manufactured and tested in the SATIMO SG-64 multiprobe spherical near field test range in Paris. The feed consist of an array of 4 high gain log-periodic elements. This paper briefly describes the consideration on antenna design and manufacturing and report on the final testing including considerations on the...
This communication presents a novel technique to deal with undesired interaction of the AUT with cables and other nearby disturbances. Its key features are: i) it allows removal of the effect of disturbances on antenna pattern, ii) it requires only approximate geometrical knowledge of the AUT and disturbing objects and iii) it is a fast data post-processing step that puts no special requirements on...
Recent advances in the design of orthomode junctions (OMJs) have created new devices capable of achieving as much as a 1:4 bandwidth, while maintaining the high performance of traditional OMJ designs. The new OMJ technology is based on an inverted-ridge structure, with four symmetrical feeding points for external balanced feeding, stabilizing the frequency dependence of the OMJ. This paper discusses...
A single polarized P-band feed, consisting of an array of 4 high gain log-periodic elements has been designed, manufactured and tested for use as illuminator in a compact antenna test range. This paper briefly describes the antenna design trade-off activity, selection of the candidate antenna technology, manufacturing and final testing including considerations on the associated measurement uncertainty...
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