Agilent Technologies has rolled out a wideband digital down-converter option on its M9703A AXIe eight-channel high-speed digitiser. The new DDC functionality enables faster, more flexible measurements in high-channel-count applications.
In many multi-antenna applications such as radar, direction finding and satellite beam forming, phase coherent acquisition channels are critical for accurate data acquisition, whether for antenna calibration or channel sounding. Traditional test platforms are generally limited to measurements involving sinusoids, which preclude testing with broader band signals, such as multitone or live signals.
For such complex signals, the real-time processing algorithm of Agilent’s new DDC functionality enables phase coherent measurements across eight input channels.
With a frequency range of DC to 2 GHz and a sampling rate of 1,6 GSps, the M9703A-DDC digitiser option provides tuning and zooming capabilities to analyse these signals of interest. The DDC programmable decimation ratio and fine IF tuning allow users to set the bandwidth and centre frequency to match the analysed signal.
Real-time decimation allows users to analyse bandwidth from 300 MHz down to less than 1 kHz, reduces the noise level, improves the dynamic range by 3 dB per decimation step, and extends the capture time.
For advanced measurement analysis, the digitiser is compatible with Agilent’s 89600 Vector Signal Analysis software.
The M9703A AXIe digitiser, combined with an Agilent two-slot or five-slot AXIe chassis, allows users to easily scale up the number of parallel acquisition channels without the use of switches, reaching up to 40 channels in only 4U of rack-mount space using five digitisers.
The M9703A with the DDC option is useful in electronic warfare and MIMO applications that need simultaneous wide-bandwidth and high dynamic-range measurements on multiple channels.
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