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What are the main characteristics of Anti aliasing filter?
- a)Ensures that bandwidth of signal to be sampled is limited to frequency range
- b)To limit the additive noise spectrum and other interference, which corrupts the signal
- c)All of the mentioned
- d)None
Correct answer is option 'C'. Can you explain this answer?
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What are the main characteristics of Anti aliasing filter?a)Ensures th...
Explanation: T he anti aliasing filter is an analog filter which has a twofold purpose. First, it ensures that the bandwidth of the signal to be sampled is limited to the desired frequency range. Using an anti aliasing filter is to limit the additive noise spectrum and other interference, which often corrupts the desired signal. Usually, additive noise is wide band and exceeds the bandwidth of the desired signal.
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What are the main characteristics of Anti aliasing filter?a)Ensures th...
The main characteristics of an anti-aliasing filter are as follows:
Ensures that bandwidth of signal to be sampled is limited to frequency range:
- The primary purpose of an anti-aliasing filter is to limit the bandwidth of the signal that is going to be sampled. This is necessary because when a continuous-time signal is sampled and then reconstructed, any frequency content above the Nyquist frequency will cause aliasing, leading to distortion and loss of information. By limiting the bandwidth of the signal, the anti-aliasing filter prevents high-frequency components from being folded back into the desired frequency range.
To limit the additive noise spectrum and other interference, which corrupts the signal:
- Another important characteristic of an anti-aliasing filter is to attenuate any noise or interference outside the desired frequency range. This helps in reducing the impact of noise on the signal during the sampling process. The filter removes any unwanted frequency components that can corrupt the signal and degrade its quality.
All of the mentioned:
- Both of the above characteristics are essential for effective anti-aliasing. The anti-aliasing filter not only limits the bandwidth of the signal to prevent aliasing but also reduces the impact of noise and interference, ensuring a clean and accurate representation of the original signal.
In conclusion, the main characteristics of an anti-aliasing filter include limiting the bandwidth of the signal to be sampled and attenuating noise and interference. By performing these functions, the anti-aliasing filter ensures accurate and high-quality signal sampling, preventing aliasing and preserving the integrity of the original signal.
Ensures that bandwidth of signal to be sampled is limited to frequency range:
- The primary purpose of an anti-aliasing filter is to limit the bandwidth of the signal that is going to be sampled. This is necessary because when a continuous-time signal is sampled and then reconstructed, any frequency content above the Nyquist frequency will cause aliasing, leading to distortion and loss of information. By limiting the bandwidth of the signal, the anti-aliasing filter prevents high-frequency components from being folded back into the desired frequency range.
To limit the additive noise spectrum and other interference, which corrupts the signal:
- Another important characteristic of an anti-aliasing filter is to attenuate any noise or interference outside the desired frequency range. This helps in reducing the impact of noise on the signal during the sampling process. The filter removes any unwanted frequency components that can corrupt the signal and degrade its quality.
All of the mentioned:
- Both of the above characteristics are essential for effective anti-aliasing. The anti-aliasing filter not only limits the bandwidth of the signal to prevent aliasing but also reduces the impact of noise and interference, ensuring a clean and accurate representation of the original signal.
In conclusion, the main characteristics of an anti-aliasing filter include limiting the bandwidth of the signal to be sampled and attenuating noise and interference. By performing these functions, the anti-aliasing filter ensures accurate and high-quality signal sampling, preventing aliasing and preserving the integrity of the original signal.
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