An Iterative Technique to Correct Probe Position Errors in Planar Near-Field to Far-Field Transformations (Classic Reprint)

Improve near-field antenna measurements with proven correction techniques.

This report explains how displacement and phase errors in planar near-field scans can distort the far-field pattern, and presents first- and higher-order corrections that help recover accuracy.

The document walks through analytic error expressions, including how to model the effect of probe position errors and how Taylor-series based corrections can be applied. It also covers computer simulations that test convergence and practicality, and outlines a path for implementing these methods at higher frequencies.

• How near-field data is related to the far-field pattern and where errors come from
• First- and second-order phase corrections for displacement errors
• Higher-order corrections and the idea of inverting the data to recover the true spectrum
• Numerical feasibility studies using real antenna data to assess convergence

Ideal for readers of technical reports on antenna measurements, millimeter-wave testing, and signal processing for calibration and verification.