Kavli Affiliate: Zeeshan Ahmed
| First 5 Authors: Chao Liu, Zeeshan Ahmed, Shawn W. Henderson, Ryan Herbst, Larry Ruckman
| Summary:
From generation to generation, the maximum RF frequency and sampling rate of
the integrated data converters in RF system-on-chip (RFSoC) family devices from
Xilinx increases significantly. With the integrated digital mixers and up and
down conversion blocks in the datapaths of the data converters, those RFSoC
devices offer the capability for implementing a full readout system of ground
and space-based telescopes and detectors across the electromagnetic spectrum
within the devices with minimum or no analog mixing circuit. In this paper, we
present the characterization results for the the data converters sampling at
higher orders of Nyquist zones to extend the frequency range covered for our
targeted readout systems of microwave-frequency resonator-based cryogenic
detector and multiplexer systems and other astronomical and high-energy physics
instrumentation applications, such as, axion search and dark matter detection.
The initial evaluation of the data converters operating higher order Nyquist
zones covers two-tones and comb of tones tests to address the concerns in the
RF inter-modulation distortion, which is the key performance index for our
targeted applications. The characterization of the data converters is performed
in the bandwidth of 4-6 GHz and results meet our requirements. The settings and
operating strategies of the data converters for our targeted applications will
be summarised.
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