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What does the term conversion gain describe?

  • A.The gain or loss through the mixer stage
  • B.The gain of the audio stage
  • C.The ratio of intermediate to signal frequency
  • D.The improvement from double conversion

Answer: A

It is the gain, or more often the loss, a signal experiences in being translated by the mixer, and a passive diode mixer has a conversion loss of several decibels while an active mixer can show gain. Audio gain is a separate figure. The frequency ratio is not a gain. And the benefit of double conversion is in image rejection and selectivity rather than gain. Knowing where a chain loses signal is what makes a noise budget possible.

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