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Checking RF Immunity Systems Against the New ISO 61000-4-3 Requirements
Program
Summary: Gone are the days when a RF amplifier could have it’s power-meter needle ‘bouncing against the stop’ to get the necessary test-field strength. The new ISO 61000-4-3 has placed limits on how hard an amplifier can be driven when creating a test field.
17025 EMC Lab accreditation auditors are now trained in checking RF immunity systems against the new requirement and are currently doing so during audit. This presentation explains how to do a self-check on against the new directive and gives practical hints on bringing the system into compliance.
Topics:
- The situation prior to ISO 61000-4-3 Edition 3
- Field calibration power level, Amplifier harmonics
- Test field integrity
- The new situation
- Audit checks for amplifier compression & for harmonic content
- A simple 5-spot method to check compliance
- Upgrading the system
- If field uniformity is the issue
- If system loss is the issue
- If amplifier ‘horse power’ is the issue
- Aiding the 17025 audit process
- Conclusions and summary
- Questions and answers
Our
Speaker: Tom is an RF engineer with experience in leading RF design teams in the design and development of high-power microwave amplifiers for use in defense and commercial applications. Tom received his degree in electrical and electronic engineering from Portsmouth University, England. He has delivered both practical and theoretical presentations to IEEE EMC Society sponsored events including ‘Linearization of an RF Amplifier for Immunity Testing’ at the 2004 Santa Clara EMC Symposium, and has had many technical articles published, including ‘Rating Power Amplifiers for RF Immunity Testing – Evaluation Engineering Magazine , 2003; ‘Selecting antenna/power amplifier combinations for the coming new RF immunity standards’ Interference Technology Magazine 2004; ‘Using radar amplifiers for automotive RF immunity tests’ Evaluation Engineering Magazine, 2005.
(pps, used with permission)
PHOTOS
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