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:checkered_flag: EEE 118 - Module 9 :checkered_flag: - Coggle Diagram
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EEE 118 - Module 9
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Communication System
when info is safely transmitted
Information Source
Transmitter
Channel
Receiver
Destination
reverses transmission
medium of travel
noise
ext. interference
power loss
mess. signal to compatible form
generation of message signal (what we transmit)
to lessen filters out more (minimize)
Amplitude Modulation
varying periodic waveforms for transmission etc. (higher freq.)
Equation Part!
distortionless transmission (modulation index ≤ 1)
follows the wave
so it MUST NOT overlap
u < 1 undermodulated; u = 1 perfectly modulated
Amplitude Demodulation
reverse of amp modulation
returns mod signal to original form
Envelope Detector
Rectification
Wave ==> No more NEGATIVE CYCLE
goes to FILTERING (resistor-capacitor) LOW/HIGH PASS FILTERS
Filtering
gets mesage (small capacitors filter out values more)