Final Lab – EGRE 307 Spring 2015 Building a Communication System Jacob Ramey Ryan Littleton Wesley Houk Ritvik Nag
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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
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