In the world of Aerospace and Defense compliance, electromagnetic compatibility (EMC) testing is non-negotiable. To achieve precise, repeatable EMC measurements, test engineers must rely on flawlessly calibrated equipment. At the heart of this calibration ecosystem sits a vital standard issued by SAE International: .
SAE ARP958, officially titled is an Aerospace Recommended Practice (ARP) published by SAE International. It is the definitive industry standard that describes a "standardized and economical method for the checkout and calibration of electromagnetic interference measurement antennas."
It establishes standard methods to calculate antenna factors.
SAE ARP958 outlines specific techniques for calibration, most notably the and variations of the Standard Site Method . 1. The Three-Antenna Method sae arp 958pdf free
The use of SAE ARP 958 offers several benefits, including:
Detailing the standard "Three-Antenna Method" used to determine the absolute antenna factors without relying on a pre-calibrated reference antenna. Why is SAE ARP 958 Critical for Aerospace Compliance?
: At 1 meter, antennas are often in the "near field," which can cause measurement errors. In the world of Aerospace and Defense compliance,
While its original intent was focused on mobile radios used in aerospace and automotive contexts, the standard has become a foundational reference for validating any RF test site. Its primary function is to define a method for measuring .
The core of SAE ARP958 is the , often executed as the Three-Antenna Method . When calibrating antennas, you cannot easily separate the characteristics of the transmitting antenna from the receiving antenna.
For detailed technical research, you can often find papers and articles that discuss the implementation of SAE ARP 958 in various testing scenarios. Many of these publications are available for free through academic search engines like Google Scholar. Additionally, for a broader understanding, the SAE committee is responsible for maintaining and updating ARP 958 and other related standards. SAE ARP958, officially titled is an Aerospace Recommended
Three uncalibrated antennas are placed in a specific geometry.
: It provides a standardized method for calibrating antennas at a 1-meter distance