Analog Crosstalk Cancellation for High Data Rate Communication Links
Paper in proceeding, 2025
In this work, a design of an analog I/Q crosstalk compensation circuit in 130 nm SiGe BiCMOS is proposed. The circuit consists of four baseband variable gain amplifiers based on Gilbert cells. As a proof of concept, a 20 Gbps QPSK input signal with high bidirectional crosstalk (20% and 30 %), equal to an error vector magnitude (EVM) of 25.1 % and signal-to-noise ratio (SNR) of 12.0 dB, was improved to EVM=16.1 % and SNR= 15.9 dB at the output. Unidirectional cross-talk up to 50%, was investigated, and at 50 % the EVM improved from 25.9 % to 18.6 %, and the SNR from 11.7 to 14.6 dB.
Author
Frida Strömbeck
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Herbert Zirath
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Proceedings - IEEE International Symposium on Circuits and Systems
02714310 (ISSN)
9798350356830 (ISBN)
2025 IEEE International Symposium on Circuits and Systems (ISCAS)
London, United Kingdom,
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Infrastructure
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Subject Categories (SSIF 2025)
Other Electrical Engineering, Electronic Engineering, Information Engineering
Telecommunications
DOI
10.1109/ISCAS56072.2025.11043397