150 GBd PAM-4 Electrical Signal Generation using SiGe-Based Analog Multiplexer Ic

We present a 2:1 analog multiplexer evaluation board for increasing the analog bandwidth of digital-to-analog converters, based on an integrated circuit in IHP's new 130 nm SiGe BiCMOS technology generation SG13G3. The resulting significant leap in performance of the IC with a signal path 3-dB-bandwidth of more than 110 GHz is used to generate ultra-high bandwidth 4-level pulse-amplitude modulation (PAM) signals at 150 GBd and 120 GBd, as well as 8-level PAM signals at 120 GBd, utilizing advanced digital signal processing.