Delta Gap Ports

A delta gap port is located in the interior of a circuit and has its two terminals connected between abutted metal polygons. A delta gap port is illustrated below. Note that delta gap ports by default have their negative terminals on the left or top side of the port depending on how the port is oriented. The polarity is indicated in the project editor window as pictured below. The polarity may be reversed by changing the Terminal Orientation in the Port Properties dialog box. The delta gap ports can be de-embedded by em, however, you may not set a reference plane or calibration length. Delta gap ports are not as accurately de-embedded as co-calibrated internal ports, but they do not require any space between the two polygons as is required for a co-calibrated port.

Delta gap ports are not allowed on the edge of a single polygon because this would leave one terminal of the port unattached. Also, care should be taken in interpreting the results for circuits which use these ports since the ports do not all access a common ground.