ANALYSIS TYPE / 01

Radiated Emission Prediction

pre-compliance · far-field · EMC chamber correlation

Ansys HFSSAnsys SIwaveAnsys EMC PlusCST Studio Suite

Overview

Radiated Emission Prediction

Predicting radiated emissions from PCBs, cables, and enclosures before the first EMC chamber test — identifying dominant emission sources, frequencies, and antenna structures that drive non-compliance and enabling targeted layout corrections.

Deliverables

Radiated Emission ReportFar-Field Pattern PlotsPre-Compliance AssessmentCorrective Action Plan

Key Aspects

What Radiated Emission Prediction Involves

01

Far-Field Emission Mapping

Computing far-field radiated emission profiles from PCB and system models, comparing predicted emissions against CISPR 22/32, FCC Part 15, and automotive CISPR 25 limits.

02

Emission Source Identification

Tracing dominant emission sources to specific PCB structures — switching regulators, clock lines, high-speed interfaces — quantifying each contributor's share of the total radiated emission budget.

03

Near-to-Far Field Transformation

Performing near-field to far-field transformation from board-level field scans or simulation data, enabling correlation with physical chamber measurements.

04

Pre-Compliance Risk Assessment

Providing a structured pre-compliance risk report identifying emission peaks most likely to fail chamber testing and prioritising corrective actions by impact and implementation effort.

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