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Bandpass Sampling Calculator

Find alias-free sampling windows for a band-limited signal and check where a proposed sample rate lands.

fL; signal energy starts here
fH; must be above fL
checked against every sampling zone
same unit for all three inputs

Sampling results

—Enter the band edges and sample rate above.

Alias-free windows

For a real signal with no energy outside fL–fH. Zone n uses 2fH/n < fs < 2fL/(n−1); zone 1 is fs > 2fH. Stay inside the ideal bounds to allow filter and clock margin. Even-numbered zones invert the spectrum. This checks ideal spectral overlap only; it does not select an ADC, analogue filter or clock.