EIRP & SFD Measurement Methodology for Planar Near-Field Antenna Ranges

Authors: Daniël Janse van Rensburg & Karl Haner

EIRP (Equivalent Isotropically Radiated Power) and SFD (Saturating Flux Density) are two system level parameters often sought during test campaigns. Measurement of these under far-field conditions is well defined and common. Although valid techniques for measuring these parameters on near-field ranges exist, these techniques are not commonly used. This paper presents measurement techniques for both parameters in detail in an attempt to illustrate the process. The techniques presented are also valid if the source (in the EIRP case) or receiver (in the SFD case) ports of the device under test are inaccessible.


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