A vehicular door handle system includes a door handle assembly for a door of a vehicle. The door handle assembly includes a door handle portion that is graspable by a user to open the vehicle door. The door handle assembly includes an antenna circuit for a passive entry system of the vehicle. The antenna circuit includes at least an inductor in series electrical connection with a capacitor. The antenna circuit includes a resistor in series electrical connection with the inductor of the antenna circuit and the capacitor of the antenna circuit. The series electrical connection includes one of (i) the resistor being disposed between the inductor and the capacitor of the antenna circuit and (ii) the resistor not being disposed between the inductor and the capacitor of the antenna circuit. The resistor functions to reduce the Q factor of the antenna circuit.