PCB - trace antenna width (coplanar)

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Joined: 21 Aug 2016, 03:47

PCB - trace antenna width (coplanar)

#1 Post by JeroenDeBuffel » 19 Mar 2020, 03:51


I am working on a PCB design (FR4, 1.6mm, 2-layer). On the PCB there is a pad to which an external antenna is connected (helical, 868 MHz). From the component (RF antenna output) to the antenna pad a trace is placed.

For this trace I intend to use coplanar trace. I try to determine the width of this path and the clearance.
I am not sure what the optimum is between trace width and clearance and how to find it.
Tips or suggestions are welcome :-)

Thanks in advance

Posts: 1523
Joined: 20 Jun 2015, 14:39

Re: PCB - trace antenna width (coplanar)

#2 Post by Tomg » 19 Mar 2020, 18:40

I'm not familiar with the technique, but after a quick search I found the following two websites that might be of some help to you...
Sierra Circuits - https://www.protoexpress.com/blog/pcb-t ... sion-line/
Chemandy Electronics - https://chemandy.com/calculators/coplan ... ulator.htm

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