Reliable Modeling of RF Mixers in I/Q Modulators: Experimental Validation and Parameter Extraction
Journal article, 2025
This article presents an algorithm to effectively model the non-ideal behavior of RF mixers employed within the structure of I/Q modulators. The proposed model is based on the memory polynomial model, which includes nonlinearities and memory effects. To evaluate the accuracy and validity of the algorithm, a comprehensive analysis is conducted using measured data.Furthermore, this study focuses on the analysis and extraction of key parameters associated with I/Q modulators based on the proposed mixer model. Experimental comparisons are performed to assess the agreement between the measured values of each parameter and their corresponding estimated values derived from the model-based analysis. The experimental validation and comparative analysis validate the effectiveness of the proposed model in accurately capturing the intricacies of the mixers’ behavior within the I/Q modulator structure.
Mathematical models
Mixer
Polynomials
Carrier Feed-through
IIP3
I/Q Modulator
I/Q Amplitude Balance
Modulation
Radio frequency
Analytical models
Predictive models
Memory Polynomial
Mixers
Quadrature Phase Error
Conversion Gain
Author
Nima Hajiabdolrahim
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Koen Buisman
University of Surrey
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Siqi Wang
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Sorbonne University
Thomas Eriksson
Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks
Gigahertz-ChaseOn Bridge Center
IEEE Transactions on Communications
00906778 (ISSN) 15580857 (eISSN)
Vol. 73 1 187-199Areas of Advance
Information and Communication Technology
Subject Categories (SSIF 2011)
Communication Systems
Other Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/TCOMM.2024.3435435