Antenna testing in anechoic chamber. Required or not?

Far field radiation pattern

Kapteos is introducing a breakthrough in antenna testing with an Artifact-free Near-Field Antenna Test Range (ANFATR).

A classical antenna test range is composed of an anechoic chamber with its multi-axis antenna positioner, a vector network analyzer (VNA) and a reference antenna.

Going without an anechoic chamber would lead to a considerable reduction of maintenance cost for the ANFATR, the suppression of the capital assets related to the classical antenna test range specific room, and markedly reduced costs, installation costs and lead times.

This is made possible by using a non-perturbative near field Electric (E) field probe that allows to map the Antenna Under Test (AUT) near field radiation pattern without inducing measurement artifacts.

A non-perturbative near field electric field probe must exhibit:

  • a low effective permittivity in order not to distort the local electric field,

  • a metal-free composition for the same reason,

  • a low loss-tangent composition to be transparent to electromagnetic waves,

  • a small size to exhibit a high spatial resolution,

  • a vector behavior to permit its use with a VNA.

  • a single E field component sensing with high orthogonal components rejection ratio in order to give precise assessment of co- and cross-polarization contributions.

Thanks to a non-perturbative optical technology, Kapteos near field electric field probes eoProbe™ fulfill all these requirements.

How to characterize an antenna in 3 steps

Antenna testing in anechoic chamber

Testing antennas without anechoic chamber is even simpler and faster!

This is achieved in 3 steps.

Antenna testing in anechoic chamber