Reading up GPS testing using a simulator and came across several articles which suggest requiring a DC block capacitor in the RF path between the GPS Simulator+Attenuators & Active Antenna.
Some explain, the 50 ohm load seen by the receiver is too high making it draw excess DC current from the circuit through the active antenna and pass through ground, which may damage the Simulator Front End or Attenuators, and also some passive components in the Receiver circuit DC current path which may not be rated for that high DC current.
My question is isn't the active antenna 50 ohm itself? Does this apply to just GPS?