Basically the antenna needs to have 2 ports for feeding (a SMD one at the beginning of the loop and a tru hole one to connect-it to bottom layer). Now, I find no way to manage the DRC on the PCB editor to use the new part, so the solution was to make the entire loop a pad that assign to both SMD and th pad the same number 1.
On the schematic to allow routing I need to short the 2 pins for the connector to make the design “routable”.
Which is expected because now the antenna had only one pin…
There are other complex designs where is required multiple feed points that connect basically to the same net, as in RF a short is not always a short…
Do you know a better way to do-it? The new KiCAD versions will have an answer to those cases?
You can design it as a “net tie”. A net tie is a PCB footprint with different pads and usually used to make a split in a net. For example a high current track to a shunt resistor, and a sense wire feedback for voltage measurement over that shunt resistor.
Recently I read you can put the pad number in a “text box”, and then you can control it’s size, so it does not get blown up t the full size of your antenna.
Another small refinement is to use SMT pads (and possibly disable the solder mask layer) instead of a THT pad for the connection.
The solution is Net Ties property of the footprint.
You just have to draw the antenna and then group the nets that belong to the same signal and get no errors:
