IP Library › Patent Application 16030626
Patent Application
App. No. 16/030,626

SYSTEMS AND METHODS FOR MEASURING AND CHARACTERIZING ANTENNA PERFORMANCE

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Quick Facts
Patent No.
US None
App. No.
16/030,626
Abstract

A ground filtering source reconstruction method and system, for a near field measurement system comprising a scanner board with an array of integrated probes that are backed by a ground plane and at least one coupled RF receiver that captures near-field data from an antenna-under-test (AUT) or device-under-test (DUT).

Claims (15)

1 . A ground filtering source reconstruction method for a near field measurement system comprising a scanner board with an array of integrated probes that are backed by a ground plane and at least one coupled RF receiver that captures near-field data from an antenna-under-test (AUT), the method comprising of the steps of:

(a) making near field measurements of electric and/or magnetic fields over a measurement aperture;

(b) using the near field measurement to solve for an equivalent source over a selected antenna surface as well as over a ground plane in the opposite direction;

(c) spatial filtering of reconstructed source components at the ground plane to represent the AUT in free space; and

(d) transforming the spatially filtered reconstructed source components to the far field.

2 . The method of claim 1 wherein the methods to solve for an equivalent source comprises using electric and magnetic field integral equations.

3 . The method of claim 2 wherein the measurement aperture and the AUT is separated by a media having non-vacuum properties comprising:

(a) electric and magnetic conductivity or loss;

(b) anisotropy; and/or

(c) inhomogeneity.

4 . A near field measurement system comprising:

(a) a scanner board having an array of integrated probes backed by a ground plane and coupled to at least one RF receiver, configured to measure magnetic and/or electric fields over a measurement aperture in the near field;

(b) a module configured to solve for an equivalent source, using the near field magnetic and/or electric field measurements, over a selected antenna surface as well as over a ground plane in the opposite direction;

(c) a module to spatially filter the reconstructed source components at the ground plane to represent the AUT in free space; and

(d) a module configured to transform the spatially filtered reconstructed source components to the far field.