Minimum sampling frequency - (Nyquist frequency)
By DarthVader
Date: 2024-12-14
Topic: 218 see comments
Post views: 297
Nyquist frequency: (fs > 2f)
The Nyquist frequency is the minimum sampling frequency needed to accurately represent a signal. The minimum sampling frequency must be greater than twice the highest signal frequency (fs > 2f).
Formulas:
(1 / 2Ts ) ≥ (1 / T )
One half the sampling frequency must be greater than or equal to the signal frequency.
(1 / Ts) ≥ (2 / T)
The sampling frequency must be greater than or equal to twice the signal frequency.
(fs) ≥ (2B)
Sampling frequency must be greater than or equal to twice the signal frequency (Bandwidth)
- fs = sampling frequency
- Ts = sampling period
- 1 / 2Ts = half the sampling frequency
- B = bandwidth = f = 1/T
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