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
2025 IEEE International Symposium on Circuits and Systems (ISCAS)
0271-4302 (ISSN) 2158-1525 (eISSN)
2025 IEEE International Symposium on Circuits and Systems (ISCAS)
London, United Kingdom,
London, United Kingdom,
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European Commission (EC) (EC/HE/101092598), 2023-01-01 -- 2025-12-31.
Infrastructure
Kollberg Laboratory
Subject Categories (SSIF 2025)
Other Electrical Engineering, Electronic Engineering, Information Engineering
Telecommunications
DOI
10.1109/ISCAS56072.2025.11043397