PCB desing at high frequency (type of PCB and track size)

[pankaj.patil]

Hello Sir

What should be the Track size and Type of PCB used for circuit design at high frequency (RF about 1Ghz) ?

Thank you

 

[volker_muehlhaus]

A typical configuration is microstrip": one signal trace over ground plane.
The track width depends on the dielectric material and thickness.

 

[enjunear]

The type of PCB material depends on other factors in your design... power handling, cost, weight, trace width, etc. Rogers is a big name in PCB materials, so take a look at their High Frequency Laminates. For a simple design, you can probably get away with FR4 to keep the cost down.

If by Track size, you mean trace width, that is a function of several parameters... type of transmission line, substrate thickness and dielectric constant. Microwaves101.com is a great resource for fundamental RF circuit theory.

Here is a link to their microstrip calculator: **broken link removed**

If you want a stripline structure, there are other calculators available to compute those numbers, too.

 

[pankaj.patil]

Hello sir
Thank You for reply
I am using FR4 sheet for PCB design with Er = 4.35 . What should be track width ? 6 mils track width is ok ?

Thank You

 

[volker_muehlhaus]

I am using FR4 sheet for PCB design with Er = 4.35

What is the FR4 thickness between the track and the ground below?

 

[jiboune256]

You can use online calculators to find the right width, like this one for example: **broken link removed**
I would advise to use the AppCAD freeware from Agilent: AppCAD