== A Perfect Solution for Characterizing Ultra-wideband Antenna Systems ==
[[Image:NEOWEB28.png|thumb|360px|Measuring the fields at the aperture of an ultra-wideband ridge horn antenna at 5GHz.]]
Far-field characterization of ultra-wideband antenna systems is a very challenging task. Whether you use an anechoic chamber or a conventional near-field scanning system for this task, you have to utilize different types of metallic antennas with different sizes at different frequency bands in both cases. [[NeoScan]] is inherently an ultra-wideband field measurement system. Its EO field probes have cutoff frequencies well within the terahertz region. It is primarily the RF processing back end of [[NeoScan]] that currently limits its operational bandwidth.
<table><tr><td>[[NeoScan]] field probes can measure Image:NEOWEB28.png|thumb|left|420px|Measuring the fields at the aperture field distribution of a wideband antenna over a very large frequency range. However, far-field radiation patterns are frequency domain data by nature. They are measured and visualized at a specified frequency. Several radiation pattern plots are typically generated at different frequency bands to characterize an ultra-wideband ridge horn antenna systemat 5GHz. Using a [[NeoScan]] system for this purpose provides the ultimate convenience of using the same measurement setup, the same AUT positioning and the same field probes to perform near-field scanning at multiple frequency bands. All you need to do is vary the frequency of the RF signal generator that feed the antenna under test. </td></tr></table>
[[NeoScan]] field probes can measure the aperture field distribution of a wideband antenna over a very large frequency range. However, far-field radiation patterns are frequency domain data by nature. They are measured and visualized at a specified frequency. Several radiation pattern plots are typically generated at different frequency bands to characterize an ultra-wideband antenna system. Using a [[NeoScan]] system for this purpose provides the ultimate convenience of using the same measurement setup, the same AUT positioning and the same field probes to perform near-field scanning at multiple frequency bands. All you need to do is vary the frequency of the RF signal generator that feed the antenna under test.
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[[Image:NEOWEB29.png|thumb|left|375px|The aperture field distribution of the ridge horn antenna.]]
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[[Image:NEOWEB30.png|thumb|left|345px|The far-field radiation pattern of the ridge horn antenna.]]
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