Which of the following is not a challenge to RF/IF conversion stage in military application?(a) Low phase noise(b) Tunable pre-selector(c) Single RF/IF up-down conversion(d) Fast tuning synthesizersThe question was asked in an interview for job.The origin of the question is RF and IF Processing Tradeoffs in portion Technology Tradeoffs in Software Defined Radio of Cognitive Radio

Which of the following is not a challenge to RF/IF conversion stage in

1.	Which of the following is not a challenge to RF/IF conversion stage in military application?(a) Low phase noise(b) Tunable pre-selector(c) Single RF/IF up-down conversion(d) Fast tuning synthesizersThe question was asked in an interview for job.The origin of the question is RF and IF Processing Tradeoffs in portion Technology Tradeoffs in Software Defined Radio of Cognitive Radio
Answer» The CORRECT answer is (c) SINGLE RF/IF up-down conversion To ELABORATE: Tunable pre-selector is required for co-site rejection. Low phase NOISE and fast tuning synthesizers are required for JTIDS and EPLRS. Single RF/IF up-down conversion is a commercial application CHALLENGE.

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