Frequency Bandwidth Calculator

Find bandwidth from center frequency and quality factor.

Bandwidth (Hz) 2,000

Formula: BW = f₀ ÷ Q

Step-by-step with your numbers:
1. Values used:
2. Center frequency = 100,000 Hz
3. Quality factor = 50
4.
5. Bandwidth = Center frequency / Quality factor = 100,000 / 50 = 2,000Hz
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Bandwidth is the frequency range a resonant circuit or filter passes around its center.

The math behind it

BW = f₀ ÷ Q. A higher Q gives a narrower, more selective bandwidth.

Worked example

100 kHz with Q 50 → 2 kHz bandwidth.

FAQ

Narrow or wide bandwidth?

Narrow for selectivity (tuning), wide for carrying more information.