Year: 2023
Type: article
Abstract: High-bandwidth signals are needed in many applications like radar, sensing, measurement and communications. Especially in optical networks, the sampling rate and analog bandwidth of digital-to-analog converters (DACs) is a bottleneck for further increasing data rates. To circumvent the sampling rate and bandwidth problem of electronic DACs, we demonstrate the generation of wide-band signals with low-bandwidth electronics. This generation is based on orthogonal sampling with sinc-pulse sequences in N parallel branches. The method not only reduces the sampling rate and bandwidth, at the same time the effective number of bits (ENOB) is improved, dramatically reducing the requirements on the electronic signal processing. In proof of concept experiments the generation of analog signals, as well as Nyquist shaped and normal data will be shown. In simulations we investigate the performance of 60 GHz data generation by 20 and 12 GHz electronics. The method can easily be integrated together with already existing electronic DAC designs and would be of great interest for all high-bandwidth applications.
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,157
Awards: PONyDAC II (Präziser Optischer NyquistPulsSynthesizer DAC), A1: Genauigkeit von Messsystemen für die THzKommunikation, Ultrabreitbandige Abtastung, Aktive THz Transceiver Komponenten, SilicononInsulator basierte Integrierte Optische Frequenzkämme für Mikrowellen, THz und Optische Anwendungen, A3: Metrologie von Abtastsystemen mit hoher Bandbreite, G6679332301, Der Agnostische Abtast Transceiver (AgSaTrans), FOR 2863: Metrologie für die THz Kommunikation
OpenAlex ID: W4387681972