Reliable Modeling of RF Mixers in I/Q Modulators: Experimental Validation and Parameter Extraction
Journal article, 2024

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.

Predictive models

I/Q Amplitude Balance

I/Q Modulator

Polynomials

Modulation

Memory Polynomial

Mathematical models

IIP3

Conversion Gain

Mixers

Analytical models

Mixer

Carrier Feed-through

Quadrature Phase Error

Radio frequency

Author

Nima Hajiabdolrahim

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Koen Buisman

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Siqi Wang

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

Thomas Eriksson

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

IEEE Transactions on Communications

00906778 (ISSN) 15580857 (eISSN)

Vol. In Press

Subject Categories

Communication Systems

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TCOMM.2024.3435435

More information

Latest update

8/9/2024 6