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A novel 32-Gb/s 5.6-Vpp digital-to-analog converter in 100 nm GaN technology for 5G signal generation

 
: Weiß, Markus; Friesicke, Christian; Quay, Rüdiger; Ambacher, Oliver

Institute of Electrical and Electronics Engineers -IEEE-:
IEEE/MTT-S International Microwave Symposium, IMS 2020 : Live Stream Event: 4 - 6 August 2020, Los Angeles
Piscataway, NJ: IEEE, 2020
ISBN: 978-1-7281-6815-9
pp.952-955
International Microwave Symposium (IMS) <2020, Online>
English
Conference Paper
Fraunhofer IAF ()
arbitrary waveform generator (AWG); digital-to-analog converter (DAC); transmitter architecture; 5G mobile communication

Abstract
The RF-power digital-to-analog converter (DAC)presented here provides RF-signals in the gigabit regime with voltage swings up to 8.32 V, suitable to drive subsequent single-stage microwave gallium nitride (GaN) power amplifer for sub-six frequencies. A current-steering architecture is driven by a custom algorithm to provide a programmable high output current, up to 250 mA, to a capacitive load such as the capacitive input impedance of an single-stage GaN power amplifier. This architecture provides data rates up to 32 Gb/s with an custom encoding, while the output voltage swing at the load capacitance is higher than 5 Vpp. Therefore, slew rates of up to 76 V/ns can be established.

: http://publica.fraunhofer.de/documents/N-599904.html