Oral Presentation

Precise far-field reconstruction and probe compensation in planar near-field measurement

Author(s): Haoran Kang

Presenter: Kang Haoran (The University of Tokyo)

As a common method, planar near-field measurement is used to characterize the far-field beam pattern of front-end optics and feed horns in millimeter and sub-millimeter wavelength. However, in practical measurements, some approximations are widely used, including far-field reconstruction by Fourier transformation and loose probe compensation. In this study, we did theoretical investigations about these approximations. And simulation and experiment results suggest that, in wide-angular range measurement and cross-polarization measurement, accurate near-field to far-field transformation and probe compensation with clear polarization definition are critical for precise far-field reconstruction.