Portland Community College | Portland, Oregon

Course Number:
EET 223
Course Title:
RF Communications Circuits
Credit Hours:
5
Lecture Hours:
40
Lecture/Lab Hours:
0
Lab Hours:
30
Special Fee:
$12.00

Course Description

Surveys amplitude and frequency modulation and demodulation, transmitter and receiver systems and circuits, receiver system noise, transmission lines, wave propagation and antennas, and communication system applications. Includes a 3-hour per week laboratory. Prerequisites: EET 221. Audit available.

Intended Outcomes for the course

Upon completion of the course students should be able to:

  1. Explain the properties of modulation and why it is necessary for practical electronic communication.
  2. Explain the role of noise in determining the quality of reception of a communication receiver.
  3. Specify the component parts of a receiver and a transmitter.
  4. Predict the source end voltage, current and impedance in a transmission line with reflections.

Course Content (Themes, Concepts, Issues and Skills)

1. Introductory Topics.

    1-2 The dB in Communications

    1-3 Noise

    1-4 Noise Designation and Calculation

    1-5 Noise Measurement

    1-6 Information and Bandwidth

2. Amplitude Modulation: Transmission

    2-1 Introduction

    2-2 Amplitude Modulation Fundamentals

    2-3 Percentage Modulation

    2-4 AM Analysis

    2-5 Circuits for AM Generation

    2-6 AM Transmitter Systems

    2-7 Transmitter Measurements.

    2-8 Troubleshooting

    2-9 Troubleshooting with Electronics Workbench Multisim

3. Amplitude Modulation: Reception.

    3-1 Receiver Characteristics

    3-2 AM Detection

    3-3 Superheterodyne Receivers

    3-4 Superheterodyne Tuning

    3-5 Superheterodyne Analysis

    3-6 Automatic Gain Control

    3-7 AM Receiver Systems.

5. Frequency Modulation: Transmission

    5-1 Angle Modulation

    5-2 A Simple FM Generator

    5-3 FM Analysis

    5-4 Noise Suppression

    5-5 Direct FM Generation

    5-6 Indirect FM Generation

    5-7 Phase-Locked Loop FM Transmittor

    5-8 Stereo FM

    5-9 FM Transmission.

6. Frequency Modulation: Reception.

    6-1 Block Diagram

    6-2 RF Amplifiers

    6-3 Limiters

    6-4 Discriminators

    6-5 Phase-Locked Loop

12. Transmission Lines.

    12-1 Introduction

    12-2 Types of Transmission Lines

    12-3 Electrical Characteristics of Transmission Lines

    12-4 Propagation of DC Voltage Down a Line

    12-5 Nonresonant Line

    12-6 Resonant Transmission Line

    12-7 Standing Wave Ratio

    12-8 The Smith Chart

13. Wave Propagation.

    13-1 Electrical to Electromagnetic Conversion

    13-2 Electromagnetic Waves

    13-3 Waves Not in Free Space

    13-4 Ground-and Space-Wave Propagation

    13-5 Sky-Wave Propagation

14. Antennas.

    14-1 Basic Antenna Theory

    14-2 Half-Wave Dipole Antennas