Parallel resonant band-pass filter

Transfer function: $H(j\omega )=\frac{2m.j{\displaystyle \frac{\omega }{{\omega }_0}}}{1+2m.j{\displaystyle \frac{\omega }{{\omega }_0}}+{\left(j{\displaystyle \frac{\omega }{{\omega }_0}}\right)}^2}$

Center frequency: $f_0=\frac{1}{2\mathrm{\pi }\sqrt{\mathrm{LC}}}$

Damping coefficient: $m=\frac{L}{2\mathrm{R}\sqrt{\mathrm{LC}}}$

Band width: $∆\omega =2m.{\omega }_0=\frac{1}{\mathrm{RC}}$