4th-Order LC Bandpass Filter.
Fo = 1/[2π√(L·C)]
Fo = 1/[2π√(10 µH · 0.1 µF)]
Fo = 159.155 kHz
Dip in the pass band intensifies as R increases. The magnitude response becomes smooth when R = 10/√2 = 7.071 Ω. In the circuit a quick way to do this is to adjust the total value of R to 10 Ω while keeping the position at 70.71%.
Roll-off rate is ±40 dB/decade asymptotic slope.
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