EMIStream is an EMI suppression support tool developed by NEC that can decrease undesirable EMI generated from PCB at an early design stage. EMI Design Rule Check scans your board against 13 rules and lists errors in order of priority allowing time efficient noise countermeasures. Power Plane Resonance Analysis shows you the hot spots on the board enabling optimized capacitor placement to reduce resonance.
Major electronics manufacturers worldwide including NASA are using EMIStream to significantly decrease time and cost spent on the design and evaluation process.
13 Rule Check Items
Return Current Path Discontinuity Check
- Reference Change
- Return Current Path Discontinuity
- Traces Near Plane Edge
- SG Trace
- SG Via Spacing
Power Plane Check
- Grounding Vias Along Plane Outline
- Decoupling Capacitor
- Trace Length
- Via Count
- Estimated Radiation
- Differential Signal
Plane Resonance Analysis
EMI increases if resonance occurs between the power/ground planes. The Plane Resonance Analysis Function takes into account plane shapes, capacitors, and distance between the power/ground planes to analyze resonance based on the PEEC (Partial Element Equivalent Circuit) method.
Far Field EMI Calculation
Far Field EMI is calculated by plane edge voltage (one pair of ground and power). It will display far field horizontal/vertical frequency characteristics and azimuth pattern. You can adjust calculation environment such as the position of the PCB on the turn table, distance to antenna, and antenna height.
Multi-layer Resoance Analysis
You can analyze multiple layers at a time. Not only will you be able to reduce resoancne by changing capacitor placement, now EMIStream will allow you take via placement into account and change/add location as needed.