The impedances $Z=jX,$ for all $X$ in the range $\left ( -\infty ,\infty \right )$, map to the Smith chart as
- a circle of radius $1$ with centre at $(0, 0)$.
- a point at the centre of the chart.
- a line passing through the centre of the chart.
- a circle of radius $0.5$ with centre at $(0.5, 0)$.