Effect of a magnetically coupled resistive loop on antiresonance

The equivalent impedance of two parallel capacitors having different self‐resonant frequencies produces a pole between the two frequencies known as antiresonance. Its peak value reduces with Q factor of the system which increases with inductance and decreases with losses. The effect of a nearby magnetically coupled resistive loop on antiresonance is studied. The value of the resistor in the loop which produces the minimum antiresonance peak, is calculated theoretically. The antiresonance peak under this condition is also derived. The theory is validated with simulation and experimental results. The concepts can be applied to suppress the antiresonance introduced when lines are used to transport power.