I am currently redesigning a PCB utilizing the Xbee 868 Mhz module with external antenna connection on the pad ( https://www.digi.com/products/embedded-systems/digi-xbee/rf-modules/sub-1-ghz-modules/digi-xbee-sx-868 ). I have followed the rules from the datasheet and calculated the proper antenna trace width and distances for 50 ohm impedance. From Xbee SX 868 User guide:
In my application the question is, either it is OK to place the SMA antenna connector not in the exact corner of the PCB:
As you can see from the screenshots, the connector is on the edge of the PCB, but only horizontal. Vertical wise it is closer to the middle. The bigger issue is that in close proximity to the connector (counter side of the PCB to the antenna trace) there are traces and components placed. Even though there is going to be solid ground and shielding between the connector (GND polygon not poured on the screenshot) and the rest of the traces, I fear that the signal quality might get altered by the digital circuitry in the close proximity.
Are there any rules I can follow and a way I could check what is the desired minimum distance of other circuitry to the antenna trace?