Benefits of Coplanar Waveguide Over Ground

"Most RF designers use rules of thumb to space things appropriately. For instance, in microstrip design, many designers use a rule of thumb to keep topside copper away from their microstrip by four times the substrate layer thickness so as to not affect their microstrip impedance. With CPWG you don't have to worry about this since the topside ground is purposefully brought up next to the topside RF trace. But do you have to worry about that close board shield?"

Source: Article Benefits of Coplanar Waveguide Over Ground: Steve Hageman

'via Blog this'