Question
In the KNX RF block diagram, what is the correct signal chain of the transmitter?
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)
- A.Information signal -> Modulator -> Output stage -> Antenna✓
- B.Antenna -> Amplifier -> Demodulator -> Information signal
- C.Information signal -> Amplifier -> Modulator -> Antenna
- D.Antenna -> Modulator -> Output stage -> Information signal
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