Describe using a block diagram the amplitude modulation method of achieving the amplitude modulation.

Amplitude Modulation Block Diagram

Input Signal:

- The input signal is the message or baseband signal that carries the information to be transmitted.

Modulator:

- The modulator is a circuit that modifies the amplitude of a carrier signal (a high-frequency signal) in accordance with the input signal.
- The output of the modulator is the amplitude-modulated (AM) signal.

Carrier Signal:

- The carrier signal is a high-frequency sine wave that acts as the "carrier" for the input signal.

Output Signal (AM Signal):

- The AM signal is the output of the modulator.
- Its amplitude varies according to the input signal, carrying the information from the original input.

Demodulator:

- The demodulator is a circuit that extracts the original input signal from the AM signal.
- It does this by detecting and filtering the amplitude variations in the AM signal.

Output Signal (Input Signal Recovered):

- The output of the demodulator is the original input signal recovered from the AM signal.

Additional Components:

- Amplifier: May be used to boost the amplitude of the input signal before modulation.
- Filter: May be used to remove unwanted frequency components from the AM signal before demodulation.

Operation:

- The input signal is amplified (if necessary) and then fed into the modulator.
- The modulator modifies the amplitude of the carrier signal according to the input signal.
- The AM signal is then transmitted through a medium (e.g., air, cable).
- At the receiving end, the AM signal is demodulated to recover the original input signal.