CPW feed

Hi!

I have used a CPW to feed an antenna, however, the mismatch introdurced by the SMA was quite large. Then I try to design a balun for that. I come up with using another CPW, so that I can make it as another reference for measurement.

Could you tell me how to calculate the compensation for the introduction of another CPW?

Thanks.

When people connect two different CPWs, they usually use tapered structure. The detailed design strategy can be found in Rainee Simons' book "Coplanar Waveguide Circuits Components & Systems".