# Bluetooth antenna

**URL:** <https://forum.fritzing.org/t/bluetooth-antenna/830>\
**Category:** parts help\
**Created:** [March 20, 2016, 4:33pm UTC](https://forum.fritzing.org/t/bluetooth-antenna/830 "2016-03-20T16:33:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![uaneme](https://forum.fritzing.org/user_avatar/forum.fritzing.org/uaneme/32/423_2.png) [@uaneme](https://forum.fritzing.org/u/uaneme)\
**Post date:** [March 20, 2016, 4:33pm UTC](https://forum.fritzing.org/t/bluetooth-antenna/830/1 "2016-03-20T16:33:47Z")

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I’m going to make a Bluetooth antenna based on this layout

[https://devzone.nordicsemi.com/question/13806/pcb-antenna-in-20mm-circle-pcb/](https://devzone.nordicsemi.com/question/13806/pcb-antenna-in-20mm-circle-pcb/)

I will do this in a non scientific manner to explore the possibillities with Inkscape to draw this up while using the least amount of brainpower. So watch this space and have fun. Please keep in mind that i’m not doing any math on this antenna, i just use the info provided on that website to slap this thing together…

First i copy this image into an Inkscape layer  
[https://devzone.nordicsemi.com/attachment/6279b16ee3e6ead6ab0e9a2ecdc70967](https://devzone.nordicsemi.com/attachment/6279b16ee3e6ead6ab0e9a2ecdc70967)  
Move the image to the 0 , 0 origin (bottom left corner)  
Then in Document properties I resize to selection  
Note that this image is not to scale (i will resize this later on)

now i trace the antenna blocks (remember i’m doing this very straight forward) and give them the copper1 layer color #f7bd13  
same for the ground plane and there i use the more orange color #f28a0f

note that there is a via between the left ‘leg’ and the ground layer. So lets make a via  
make a little circle (this will also be on the copper layer) after rescaling this circle has to be resized to 0.4mm (the standard size of a via)

This is what i have so far:

[inkscape svg](http://forum.fritzing.org/uploads/default/original/1X/ffc9223c388e72371a8b4800d3237e59c9200777.svg)

Now i can delete the bitmap layer as i nolonger need it to trace anything

i open inkscapes XML editor Edit\>XML Editor  
and here i name the rectangles into something that makes a little bit more sense to me. (not really essential but i try to minimise the confusion to something that i can work with) and place all in a logical order

i rename the vector layer to copper1  
made a new layer copper0 and move the ground plane to this layer  
and i fixed a few details  
locked the copper layers  
made a silkscreen layer  
moved the “outline”  
to the silkscreen and locked it  
Saved as plain SVG

and now I have:

[plain svg](http://forum.fritzing.org/uploads/default/original/1X/3279f98c166f18d6d371f19ce3682a9fa7d440f7.svg)

After rescaling ans some cosmetic adjustments:  
 ![](https://forum.fritzing.org/uploads/default/original/1X/5262a858b8276123f3e9e92f7e330b076fa81dab.png)  
[download plain svg](http://forum.fritzing.org/uploads/default/original/1X/0c81db181e2c45951b1e64fbd37e4b31ead5b83c.svg)

At this stage I could use some suggestions for the PCB part design  
the connector stuff for the copper layers where should i put the ground connections on this?  
can the whole ground plane be a connector

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**Author:** ![AlanChen](https://forum.fritzing.org/user_avatar/forum.fritzing.org/alanchen/32/2797_2.png) [@AlanChen](https://forum.fritzing.org/u/AlanChen)\
**Post date:** [February 2, 2019, 5:14pm UTC](https://forum.fritzing.org/t/bluetooth-antenna/830/2 "2019-02-02T17:14:27Z")

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Hello,  
I am also working on 2.4Ghz meandered PIFA now, and still finding data  
did you successfully complete the design? can you share your findings?  
Thank you ~