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PCB track width vs loss

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pcb track width

Assume two 50-Ohm tracks, one is 1mm track width and the other is 5mm track width.

The wider track would get smaller loss.

Can someone advise the theoretical formula for the loss calculation agaist track width?

Thanks.
 

track width pcb

There are at least three loss modes - resistive, dielectric, and radiation.

What frequency ranges are we talking about? That will determine which of the above need to be considered.
 

pcbtrack widthloss

Hello,

Yes, different loss models depending upon the operating Frequency/Substrate parameters...

Here is link with details...
**broken link removed**

Also you have free Transmissionline Calculator from AWR which directly preddics from equations download here...
https://web.awrcorp.com/Usa/Products/Optional-Products/TX-Line/

---manju---
 

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