CST – Computer Simulation Technology

Microstrip to CPW Transition

Image of the Microstrip to CPW transition Image of the Microstrip to CPW transition

The Microstrip to CPW transition makes use of a grounded-CPW (also known as conductor-backed CPW or CBCPW) section to provide an efficient transformation between a CPW line and a microstrip line. The transition effectively acts as a mode and impedance transformer between the 2 transmission line sections.

The figure below shows the typical reflection response for a transition with a substrate height of 2.9% in the medium, a relative permittivity of 3, an input impedance of 75 Ω and an output impedance of 50 Ω.

Typical reflection coefficient vs frequency Typical reflection coefficient vs frequency

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