44 Communications Electronics
(3) CSU Lecture 3 hours.
Recommended Prerequisites: Electronics
6A and B and 8A and B.
Concepts of modulating and demodulating a RF
carrier including AM, SSB, FM, and PM. Study of RF transmitters and
receivers and their sub-circuits, including: RF filters, amplifiers,
oscillators, modulators, mixers, detectors and discriminators. Frequency
multipliers, phase locked loop detectors and synthesizers. TV systems.
Digital Communications: FSK and PSK. Signals in the frequency
and time domains.
45 Communications Electronics
Laboratory (1) CSU Laboratory 3 hours.
Recommended Corequisite: Electronics
Laboratory experience for Electronics 44.
Communications circuits including oscillators, modulators, filters, IF amplifiers,
TV sweep generator, and modem are built and tested. Communications
test equipment usage, including signal generator, scope, FFT spectrum
Electronics 44 - Communications
Electronics Course Outline
- Introduction to Communications Systems, Frequency Division Multiplexing,
Time and Frequency Domain.
- Spectrum Analysis, Fourier Theorem and Analysis.
- Amplitude Modulation: Generation, Detection, Analysis.
- Amplifers: Analysis, Types and Classes of Operation Mixers:
Types and Characteristics.
- AM Transmitters: High and Low Level Modulation.
- Receivers: Superheterodyne theory, design and analysis, local oscillator.
IF filter terminology, image rejection.
- Suppressed Carrier AM Systems: Single and Double Sideband.
- Frequency Modulation, FM Transmitters and Receivers. Subcarriers
and FM Stereo Multiplex.
- Phase Locked Loop FM detector, Frequency Synthesizers.
- Television: Raster Scanning, Baseband generation, bandwidth requirements.
- Television: Channel Allocations, TV receiver, Sound and Color Subcarriers.
- Digital and Data Communications:, Pulse systems, Pulse Code Modulation
- Analog to Digital and Digital to Analog Conversion, Quantization
- Details of Serial and Parallel Communications Systems, Asynchronous
- BPSK, Multilevel Digital Modulation Techniques, Bit Error Rate Comparison.
Electronics 45 - Communications Electronics Lab Course
- Introduction to Radio Frequency (RF) lab equipment.
- Tuned Circuits – Factors affecting selectivity, Computer Analysis and
- Fourier Theorem.
- Amplitude Modulation and Demodulation.
- Tuned and untuned RF amplifiers.
- Radio Frequency Oscillators.
- Balanced Modulator.
- IF filter characteristics – Use of sweep generator.
- Heterodyne Frequency Converter – Shortwave converter.
- Frequency Multiplication.
- Amplifier Efficiency.
- Frequency Modulator.
- TV sweep generation.
- Modem, FSK generation and reception.
- Lab performance exercise.