Rounded CPW

[Hokawa_Ryu]

Hi there,

I currently work on building a PCB for microwave application where chips will be bonded to.

My question is: Is there a recommended way to build a cpw in diptrace? So a way where I get a center conductor and gap width of defined width?
Also, I need two angled CPW with 90 degree. Those should ideally be round. Is there also a nice way to build that?

I am fiddeling around with stuff and the best looking thing I found so far is drawing the route with the 90/Arc mode and then just add a clearance to the copper pour which defines my gap width.
Unfortunately teh resolution of the pouring seems to be lower than the rounding. So while the routed center conductor looks smooth, the ground corner which is created by the pour has visible kinks.

I hope someone can shine a little light on my problem, because after some days I did not find a better solution.

[Alex]

It seems there is no better solution than using an arc trace and copper pour with defined gap.
Did you try to change copper pour properties, for example decreasing the line width in the properties to make the pouring smoother?

[democraticc]

You may consider a hybrid approach with Manual Ground Definition and Higher Resolution Settings. Since DipTrace has limitations with complex RF structures compared to dedicated RF EDA tools, a hybrid approach that leverages its strengths while compensating for its weaknesses is the optimal approach.