ECE 4675 Radio Engineering Laboratory | ECE | Virginia Tech

Undergraduate PROGRAMS

Course Information


Wireless circuit design. Laboratory techniques for radio frequencies. 4675: Design of amplifers and oscillators.

Why take this course?

Provides an ability to measure radio frequency circuits and components and to design an amplifier and an oscillator.

Capstone Technical Elective for EE; Technical Elective for CPE


Prerequisites: ECE 3106 Electromagnetic Fields; ECE 3204 Electronics II. Corequisites: ECE 4605 Radio Engineering.

3106, 3204, and senior standing (prerequisite), 4605 (corequisite). The necessary background consists of devices, biasing, and basic low frequency amplifiers concepts, as well as some basic transmission line and Smith chart principles. A student should be able to bias a transistor circuit and analyze its basic low frequency performance. They should also be able to analyze basic networks and their general frequency performance (as covered in 3204). It is critical that they have a basic understanding of 2-port equivalent circuits and related modeling as presented in 3204 and prerequisites. They should also be able to model short sections of transmission line as corresponding inductors and capacitors as well as represent impedance transformations on the Smith chart.

Major Measurable Learning Objectives

  • Design radio frequency amplifiers using both Y- and S-parameter techniques
  • Design a L-C oscillator
  • Predict performance of the design they construct
  • Maintain an engineering notebook

Course Topics


Percentage of Course

Equipment orientation 8%
Component measurement 16%
Transistor biasing 8%
Radio-frequency parameter measurement 12%
Amplifier design/construction 12%
Amplifier optimization 12%
Amplifier measurement 12
Oscillator design/construction 8%
Oscillator measurement 12%