How do you choose sampling frequency?

The sampling frequency should be at least double the maximum frequency. If your measurement is done in the pass-band (2.38 GHz-2.46 GHz), so the maximum frequency is 2.46 GHz which means that the sampling frequency should be at least 2×2. 46 GHz = 4.92 GHz.

How do you choose sampling frequency for data acquisition?

If you are unsure of the frequency range (bandwidth) of your signal, a useful rule of thumb is to choose a sampling rate high enough to allow at least 5 to 20 samples for any transient peaks or recurring waves in the signal.

What is sampling rate in DSP?

Sampling rate (sometimes called sampling frequency or Fs) is the number of data points acquired per second. A sampling rate of 2000 samples/second means that 2000 discrete data points are acquired every second.

What is sampling and aliasing in DSP?

As you already know, sampling of a continuous-time signal results in repeating its spectrum in the frequency domain. When the sampling rate is not large enough (not larger than 2B Hz), then interference among adjacent bands will occur, and this results in the phenomenon of aliasing.

What is sampling rate in data acquisition?

One of the most important specifications of a DAQ device is the sampling rate, which is the speed at which the DAQ device’s ADC takes samples of a signal. Typical sampling rates are either hardware- or software-timed and are up to rates of 2 MS/s.

How do you calculate aliasing frequency?

A simple rule to predict this aliased frequency is: decrement fo by fs enough times to get within the observable frequency range of [−fN , fN ]. The absolute value of this result is the aliased frequency. Sampling at 5.5kHz gives a time step of 0.182 milliseconds.

What is minimum sampling rate is called?

The minimum sampling rate allowed by the sampling theorem (fs = 2W) is called the Nyquist rate.