Microstrip Port

Different configurations using a microstrip port are considered.

The first configuration considered is to define a microstrip port on the full width of the microstrip line. For the second and third configurations, a feed structure is created using polygons to decrease the width of the microstrip port.

Narrow Version

To decrease the width of the microstrip port, a polygon is added to the microstrip line to act as the feed structure. For better accuracy, ensure that the width of the microstrip port is roughly 1 5 of the microstrip line width.

Figure 1. Top view of the partial microstrip line. On the left, the feed structure is indicated in yellow. To the right, the microstrip port is added to the feed structure.