The primary components in an active LPF are:
Operational Amplifier (Op-Amp): The heart of the circuit, amplifying the filtered signal. Resistors: Determine the cutoff frequency and gain.
Capacitor: Blocks high-frequency signals.
Then the operation of an active low-pass filter is verified by analyzing its frequency gain equation, which shows that:
1.Low frequencies: Pass through with minimal attenuation
2.High frequencies: Are significantly attenuated
3. Cutoff frequency: The point at which the gain drops to 70.7% of its maximum value.
引用格式
Marwa Abdelkareem (2025). first-order low pass active filter (https://www.mathworks.com/matlabcentral/fileexchange/172860-first-order-low-pass-active-filter), MATLAB Central File Exchange. 检索时间: .
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