directional coupler with a pcb trace?

[7rots51]

pcb directional coupler

Is it possible to get a sample from 50 ohm RF trace with another pcb trace near it ? how to design it to get 50 ohm impedance (10~20db coupling is good)

 

[kspalla]

directional coupler pcb

Yes its possible.
Use ADS linecalc for finding the trace width and separation after feeding the PCB details and the frequency of interest.

 

[byteptr]

directional coupler design ads

Hi,
here is a tutorial

**broken link removed**

I use qucs its free and seems to work for RF (its free)

 

[7rots51]

20 db coupler pcb

Is there any tutorial for design coupler with ADS LineCalc?