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Electromagnetic radiation regulations of many countries have become more rigorous due to the rapid growth of the number of electronic devices in the market. To find low-noise solutions, many development sites employ the build-and-try approach using prototype devices, and these development sites are now faced with new problems of longer time-to-market and higher product development costs.

    
                     
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    HOW DOES EMI Stream WORK?
At the placement design stage (pre-routing), EMI Stream examines optimal placement locations for parts by using imaginary routing and verifies the effects of the proposed EMI solution. EMI Stream also can suppress resonance which occurs between the power and ground (GND) planes by analyzing the resonance which occurs by changing the locations of capacitors.		      
   
By eliminating the causes of unnecessary electromagnetic radiation from the initial design stage, EMI Stream substantially reduces the time and costs needed for revision after the prototype is developed and enables rapid time-to-market. 		 
    PARTS PLACEMENT ANALYSIS
If an error is found in the post-routing check, any remedy for correcting that error, including repositioning parts and changing routing paths, becomes difficult. 		   
    Since two of the main factors that affect EMI are trace length and placement positions, EMI Stream predicts and checks the routing before any actual routing takes place. If errors occur repeatedly in a net that connects parts, generally the number of errors can be reduced by placing those parts closer together. EMI Stream supports What-If analysis, which lets you change placement positions and analyze how close together parts should be placed.  
 
   
    CORRECTION PRIORITY DISPLAY
After executing the various check items, EMI Stream adds numerical values to each net based on the severity of the detected errors, color codes the nets in the order they should be corrected, and lists the nets along with the detected errors. Effective corrections can be made in a shorter period of time by correcting the nets sequentially from those with the highest error score. Depending on the check item, EMI Stream also displays explanations of the error causes and advice on how to correct the errors.

RESONANCE OVERLAP DISPLAY
By showing the results of resonance analysis between the circuit operating frequency and the harmonic frequency components in an overlap display, EMI Stream lets you visually check resonance conditions when capacitors are repositioned, added, or deleted. Even if a capacitor for suppressing resonance at a certain frequency is placed at a location having a high resonance voltage amplitude, the overall amount of EMI will not be suppressed if resonance occurs at a different harmonic frequency. This overlap display lets you check whether all resonance, including resonance involving harmonic frequencies, is being suppressed. Consequently, suppression of EMI becomes possible during actual operation of the product.

   
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Please Contact Us For More Information
Contact us at: jstimad@amtflorida.com
or reply to this e-mail

John Stimadorakis  727- 864-6054

AMT Corp.  
St. Petersburg, Florida
www.AMTFlorida.com 
 

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