DZ
D.O. Zavoloko
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Estimating the Far-Field Radiation Pattern from Near-Field Measurements using an Automated Robotic Arm
Near-Field to Far-Field Transformation Program for Customizable Scanning Geometry
Bachelor thesis
(2025)
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M. Gillain, D.O. Zavoloko, N. Llombart Juan, D. Lončarević, M. Spirito, D. Cavallo, M.C.R. Fieback
Automated Robotic arms redefine the limits of antenna characterization. This paper presents a method to estimate the far-field radiation pattern of antennas utilizing near-field measurements through the use of a 6-axis robotic arm. The innovation of our project lies in overcoming the current limitation of fixed scanning geometries, by extending them to any possible spatial shape with the support of a 6-axis robotic arm.
The project is built and validated incrementally through a series of MATLAB functions, utilizing the equivalence theorem as a NF to FF transformation method. Each stage builds upon the previous ones and increases in complexity. Validation stages begin by simulating infinitesimal dipoles and progress up to experimental validation of a tilted horn antenna. All the validation steps are successfully met, except for an unexpected phase symmetry. Our work sets a solid foundation for further development of this antenna measurement system. The system will significantly improve antenna characterization by enabling more flexible scanning grids. ...
The project is built and validated incrementally through a series of MATLAB functions, utilizing the equivalence theorem as a NF to FF transformation method. Each stage builds upon the previous ones and increases in complexity. Validation stages begin by simulating infinitesimal dipoles and progress up to experimental validation of a tilted horn antenna. All the validation steps are successfully met, except for an unexpected phase symmetry. Our work sets a solid foundation for further development of this antenna measurement system. The system will significantly improve antenna characterization by enabling more flexible scanning grids. ...
Automated Robotic arms redefine the limits of antenna characterization. This paper presents a method to estimate the far-field radiation pattern of antennas utilizing near-field measurements through the use of a 6-axis robotic arm. The innovation of our project lies in overcoming the current limitation of fixed scanning geometries, by extending them to any possible spatial shape with the support of a 6-axis robotic arm.
The project is built and validated incrementally through a series of MATLAB functions, utilizing the equivalence theorem as a NF to FF transformation method. Each stage builds upon the previous ones and increases in complexity. Validation stages begin by simulating infinitesimal dipoles and progress up to experimental validation of a tilted horn antenna. All the validation steps are successfully met, except for an unexpected phase symmetry. Our work sets a solid foundation for further development of this antenna measurement system. The system will significantly improve antenna characterization by enabling more flexible scanning grids.
The project is built and validated incrementally through a series of MATLAB functions, utilizing the equivalence theorem as a NF to FF transformation method. Each stage builds upon the previous ones and increases in complexity. Validation stages begin by simulating infinitesimal dipoles and progress up to experimental validation of a tilted horn antenna. All the validation steps are successfully met, except for an unexpected phase symmetry. Our work sets a solid foundation for further development of this antenna measurement system. The system will significantly improve antenna characterization by enabling more flexible scanning grids.