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Frage 333

Why is it good to match receiver bandwidth to the bandwidth of the operating mode?

  1. It is required by FCC rules
  2. It minimizes power consumption in the receiver
  3. It improves impedance matching of the antenna
  4. It results in the best signal-to-noise ratioRichtige Antwort

Erklärung

Noise power admitted by a receiver is proportional to its bandwidth, so a filter wider than the signal adds noise without adding signal, while a narrower one discards signal energy. Matching the two maximizes the signal-to-noise ratio.

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Frage 333: Why is it good to match receiver bandwidth to the bandwidth… · FCC General Class (Element 3) · Questena