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Sep 12, 2024
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ELT 475 - Communications Systems Lab Credits: 3 Lecture Hours: 0 Lab Hours: 6 Practicum Hours: 0 Work Experience: 0 Course Type: Voc/Tech Laboratory experiments in radio, television, satellite and microwave systems, including the construction and alignment of a broadcast radio receiver. Prerequisite: ELT 387 , ELT 388 Corequisite: ELT 474 Competencies
- Use Decibel Measurements in radio frequency circuits
- Perform decibel calculations in dB, dBm, and dBv in common radio frequency circuits
- Measure gain and loss is radio frequency circuits
- Assess resonance circuits and how they are used
- Perform resonant frequency calculations and measurements
- Build a radio frequency (RF) oscillator
- Build an AM/FM radio receiver
- Outline basic building blocks of a broadcast receiver
- Demonstrate proper electronic construction techniques
- Perform alignment and calibration of tuned circuits
- Examine Distortion Analyzer operation
- Outline how a distortion analyzer operates
- Perform total harmonic distortion(THD) measurements on sine, triangular and square waves
- Examine spectrum analyzer operation
- Outline how a Spectrum Analyzer operates
- Perform signal strength measurements with a spectrum analyzer
- Perform distortion measurements using a spectrum analyzer
- Distinguish signals in time and frequency domain
- Describe a Fourier Series
- Contrast a square wave in time and frequency domains
- Evaluate mixer operation
- Outline various types of RF mixers
- Build and test a diode ring mixer
- Outline mixer operation in Intermediate Frequency (IF) circuits
- Evaluate noise in the radio spectrum
- Perform signal to noise ratio measurements using a spectrum analyzer
- Outline radio frequency noise types
- Outline Amplitude Modulation waveform measurements
- Measure AM modulation with an oscilloscope
- Measure AM modulation with a spectrum analyzer
- Characterize receiver sensitivity
- Measure receiver sensitivity with a microvolt signal generator
- Contrast AM, FM, Digital, and SSB reception sensitivity
- Describe single sideband transmission and reception
- Outline phase locked loop systems
- Describe a frequency synthesizer
- Build a phase lock loop
- Evaluate FM Modulation Measurements
- Measure frequency modulation with a spectrum analyzer
- Estimate frequency modulation in RF circuits
- Analyze Transmission Lines
- Outline transmission line types
- Measure Characteristic transmission line impedances
- Use a Smith Chart to estimate impedance transformations on a transmission line
Competencies Revised Date: 2019
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