#325 Query about RF Layout in KLayout Issue created by Ikram-rs22 I have some queries about RF layout in this pdk rule - 1. Like cadence, is the black portion of the screen considered as global p substrate? image 1. About guard rings, is the HBT inside a guard ring? How do we create a guard ring for the resistors as the bulk connection is sub! ? The layers needed for creating a guard ring. Is the layers in the ptap pycell the ones for creating a guard cell? image 1. Regarding the metal shielding in RF designs, is it a problem to have a global metal shielding for the routing paths and pycells or does it need to be chopped ? Is there any layer which will prevent the respective area where it is drawn from being covered in the global metal shielding meaning that part won't be counted in the shielding?? image IHP-GmbH/IHP-Open-PDK