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29 Sep 2020
b) Figure Q1b shows an AM modulator. The audio input (I/P) is set at 300 mV amplitude and 1 kHz sine wave frequency. The carrier signal is set at to be 300 mV amplitude and 100 kHz sine wave frequency. i. Sketch the output at TP1 and TP2 by showing the phase different. [4 marks] ii. Analyse the circuit and write the expression for output at M1 and output of the modulator.
b) Figure Q1b shows an AM modulator. The audio input (I/P) is set at 300 mV amplitude and 1 kHz sine wave frequency. The carrier signal is set at to be 300 mV amplitude and 100 kHz sine wave frequency. i. Sketch the output at TP1 and TP2 by showing the phase different. [4 marks] ii. Analyse the circuit and write the expression for output at M1 and output of the modulator.
arunkumarakLv4
15 Dec 2022