Question

In the KNX RF block diagram, what is the correct signal chain of the transmitter?

KNX BasicLearnKNX RFMedium
Answer

A — Information signal -> Modulator -> Output stage -> Antenna

Correct: on the transmit side the information signal is modulated, passed through the output stage, and radiated by the antenna.

Source

KNX Basic Course Documentation — 3.1 — p. 143

All proposed choices (exam context)
  1. A.Information signal -> Modulator -> Output stage -> Antenna
  2. B.Antenna -> Amplifier -> Demodulator -> Information signal
  3. C.Information signal -> Amplifier -> Modulator -> Antenna
  4. D.Antenna -> Modulator -> Output stage -> Information signal
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Last updated: 19 May 2026

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