EMIStream’s EMI Design Rule Check and Plane Resonance Analysis are now available in the Altium Designer environment as Altium Extension application.

1. EMI Design Rule Checker
2. Plane Resonance Analyzer

View Recordings of Our Session at AltiumLive 2022

Eliminate EMI Problems at design stage, Robust EMI Design Rule Check & Plane Resonance Analysis (Altium web)
Finally, very important EMI design rule check and plane resonance analysis are available in the Altium Designer environment. This talk will show you how bad EMI designs cause serious EMI problems and how to mitigate EMI using EMI design rule check and plane resonance analysis. We will explain some of the most important rules with simulation and experiment results.

1. EMI Design Rule Checker

This function provides advice related to scanned components, traces, and plane location. EMIStream’s 15 rule check items are boiled down from a huge amount of historical know-how about EMI suppression countermeasures and have been verified by NEC Laboratory and local and overseas university researchers with a logical background. In this way, EMIStream utilizes the most valuable items for real-world PCB design.

15 Rule Check Items

Trace Check

1. Trace Length
2. Via Count
3. Estimated Radiation
4. Filter
5. Differential Signal
6. XTalk

Narrowing EMI check results down using AI

You can narrow EMI check results down to significant errors using an AI that has learned EMC Experts’ know-how of design review. This function allows you to shorten the review time, and suppress variations in design quality.

Error Filtering Function

This function allows you to filter errors and hone in on critical problems relevant to your design. The Design Rule list lets you look at certain rules of your choice as well as narrow down the frequency range (of the nets). The Error Point list is organized by number of error points, which also gives you the frequency range columns. You can customize the frequency and error point ranges.

EMI Check Report Function

You can export EMI Check results in an Excel format. It displays the error, the location on PCB, and advice on how to fix the problem. This is very useful when sharing results with fellow engineers or an outsourcing design bureau. You can edit comments and customize the report to fit your needs.

Estimated Radiation Value Graph Display

The frequency spectrum chart display of estimated radiated electromagnetic field allows you to see the problematic frequency range at a glance. The Expert Option lets you to set the IC rise time and damping/termination resistor value for individual nets and override the global value that is set in the parameter. By putting in specific parameters for nets, you can get more accurate results.

2. Plane Resonance Analyzer

EMI increases if resonance occurs between the power/ground. The Power/ Ground 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 displays far field horizontal/vertical frequency characteristics and an azimuth pattern. You can adjust the calculation environment, such as the position of the PCB on the turntable, the distance to the antenna, and the antenna height.

Resonance Analysis Report

Resonance analysis results such as analysis conditions, spectrum chart and voltage-distribution color gradation maps are reported collectively in an Excel format.

Two or more analysis results, such as results of before / after adding capacitors or analysis results of all power planes on boards, can be reported collectively. These Reports can be preserved as evidence.

Movie Feature of Resonance Analysis Results

You can display resonance analysis results as a video. By displaying resonance analysis results in the time domain, you can visually understand changes in voltage distribution.

In addition, when resonance occurs, you can see if two hot spots are in phase or if their phases are opposite each other.

EMIStream Extension Operation Environment