Final Lab Building A Communication System

InputInput AmplifierModulatorOscillatorTransmission Amplifier

Input from a 3.5mm jackOp-Amp amplifier with gain of 4.7 V/V

Input / Amplifier

Colpitts Oscillator590kHzTHD of 8.9%

Oscillator

Oscillator

Conventional Amplitude Modulation (Non-Suppressed Carrier)Modulator

Modulator

Common Emitter AmplifierGain of 7 V/VTransmission Amplifier

Transmission Amplifier

Quarter wave monopole58 inch copper tube125 meter loading coilAntenna

Receiver Amplifier

Envelope DetectorOutput AmplifierOutput

Amplifies signal received from antennaTwo cascaded amplifiers for a total 8 V/V gain

Receive Amplifier

Receive Amplifier

Passive Envelope DetectorDC biased

Envelope Detector

Envelope Detector

Op-amp based amplifierGain of 4.5 V/VOutput / Amplifier

Video

Questions??AcknowledgementsRameez for help with receiverDr. Filippas for being awesome