Excitation Source Overview

CST MICROWAVE STUDIO offers several different excitation sources, depending on the specific application and structure types. In the following a short overview list is given, please refer to the respective overview pages to learn more about the corresponding excitation source type.

- Discrete Ports

(lumped elements)

Discrete ports are available as S-Parameter, voltage or current port. They are mainly used to simulate lumped element sources inside the calculation domain and can be used for TEM-like modes.

Input: Knowledge of TEM-mode, line impedance (voltage or current respectively)

Output: Voltage or current

 

- Waveguide Ports

- Multipin Ports

(2D eigenmode solver)

Waveguide ports are used to simulate an infinitely long waveguide, e.g. a rectangular waveguide, a coaxial cable or a microstrip line. They deliver a better match to the mode pattern as well as higher accuracy in S-Parameters.

Input: Area for eigenmode solution

Output: E and H-pattern, line and wave impedance, propagation constant (beta, alpha)

- Plane Waves

Excitation of linear, circular or elliptical plane waves.

 

 

- Farfield Sources

Import of a farfield monitor file calculated with CST MICROWAVE STUDIO

 

- Nearfield Sources

 

Import of near field source data calculated by CST MICROWAVE STUDIO, CST CABLE STUDIO, or CST PCB STUDIO. Also available is the import of Sigrity® NFD radiation data.