Which of the following is not used in antialiasing filters?(a) Single stage RC or LC circuits(b) Multistage LC circuits(c) RC active filter(d) High order switched capacitor filter circuitsThe question was asked in semester exam.My question is taken from Data Conversion topic in chapter Digital Communication Techniques of Avionics

Which of the following is not used in antialiasing filters?(a) Single

1.	Which of the following is not used in antialiasing filters?(a) Single stage RC or LC circuits(b) Multistage LC circuits(c) RC active filter(d) High order switched capacitor filter circuitsThe question was asked in semester exam.My question is taken from Data Conversion topic in chapter Digital Communication Techniques of Avionics
Answer» The correct choice is (a) Single stage RC or LC circuits For EXPLANATION I WOULD say: An antialiasing filter MUST have good selective characteristics. The roll off rate of a single stage RC or LC circuit is too LOW and hence Multistage LC circuits, RC active filter and High order switched capacitor filter circuits are used.

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