Ideal

Ideal BandPass Filter

Ideal BandPass Filter
  1. What is an ideal bandpass filter?
  2. What makes an ideal filter?
  3. What is ideal bandwidth of high-pass filter?

What is an ideal bandpass filter?

An ideal bandpass filter would have a completely flat passband: all frequencies within the passband would be passed to the output without amplification or attenuation, and would completely attenuate all frequencies outside the passband.

What makes an ideal filter?

An ideal filter is considered to have a specified, nonzero magnitude for one or more bands of frequencies and is considered to have zero magnitude for one or more bands of frequencies. On the other hand, practical implementation constraints require that a filter be causal.

What is ideal bandwidth of high-pass filter?

The gain-bandwidth product of the op-amp starts from around 100kHz for small signal amplifiers up to about 1GHz for high-speed digital video amplifiers and op-amp based active filters can achieve very good accuracy and performance provided that low tolerance resistors and capacitors are used.

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