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We present a novel 2-channel arbitrary waveform generator (AWG) prototype, generating complex signal constellations with 6-bit digital-to-analog conversion (DAC) of up to 72 GS/s at a 6-dB bandwidth of 23 GHz. We generate a 55-GBd root-raised cosine shaped single-carrier 64-QAM signal.
This paper reports on the status of the design and expected performance of high speed AD and DA converters in SiGe bipolar technology for future 100 Gbit/s Ethernet systems.
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