Which circuit is used to produce the IF for better selection and filtering?(a) Downconverter(b) Modulator(c) RC circuit(d) Gating circuitThis question was addressed to me in my homework.The question is from Data Conversion topic in chapter Digital Communication Techniques of Avionics

Which circuit is used to produce the IF for better selection and filte

1.	Which circuit is used to produce the IF for better selection and filtering?(a) Downconverter(b) Modulator(c) RC circuit(d) Gating circuitThis question was addressed to me in my homework.The question is from Data Conversion topic in chapter Digital Communication Techniques of Avionics
Answer» RIGHT option is (a) Downconverter The explanation: In radio receivers, a high-frequency signal is converted to a lower mixed frequency CALLED an INTERMEDIATE frequency (IF) where it can be more adequately filtered for improved frequency selection. A downconverter is a CIRCUIT that performs this equivalent of ALIASING.

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Which circuit is used to produce the IF for better selection and filtering?(a) Downconverter(b) Modulator(c) RC circuit(d) Gating circuitThis question was addressed to me in my homework.The question is from Data Conversion topic in chapter Digital Communication Techniques of Avionics

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