Radio-Frequency and Microwave Measurements

Course Description

Basic measurement methods, techniques and instrumentation for measurement in the radio-frequency and microwave frequency band are introduced. The course is focused on laboratory work - getting experience measuring circuit and system parameters.

General Competencies

The course thoroughly explains the differences between measurement techniques and appropriate instrumentation in classic electronic engineering and those in radio-frequency and microwave engineering, caused by complicated electromagnetic phenomena. It is expected that students will develop practical skills for autonomous measurements of all basic quantities needed in everyday engineering practice in the field of radio-frequency and microwave engineering (power measurements of CW and pulsed signal, spectrum measurements, scattering parameters measurement, noise figure measurement).

Learning Outcomes

  1. Identify the differences between measurements in low-frequency regime and RF and microwave regime.
  2. Identify the basic measuring quantities in RF and microwave regime
  3. Explain construction of standard laboratory instruments in RF and microwave regime (power meter, signal generator, scalar and vector analyzer)
  4. Select appropriate measurement method and measuring instrument for every basic quantity in RF and microwave regime (power, frequency, scattering parameters, spectrum, EM field)
  5. Identify appropriate connectors, measuring cables and other auxiliary equipment for particular measurement..
  6. Develop a simple RF (or microwave) measuring system that comprises several standard instruments

Forms of Teaching

Lectures

Theoretical background of each unit is given in the lectures. This is complemented by in-front-of-class experiments and computer situations that explain physics of particular phenomenon.

Laboratory Work

Four blocks of laboratory exercises. Each exercise is run as a group work of five students.

Experiments

There are 12 in-front-of-class experiments that cover whole syllabus. Each experiment is recorded by camera and projected on the screen. Therefore, each student is able to follow the experiment. Each experiment is also complemented by computer simulation, which enables further discussion and analysis.

Consultations

There are weekly scheduled consultations with a professor and a teaching assistant. For some special problems, the group consultations are also organized occasionally

Structural Exercises

There is optional non-compulsary project, in which the students are expected to design and construct small measuring system. This project bears 10 credits. This 10 credits are summed up to other achieved credits. They also can replace 10 credits from any other component.

Grading Method

Continuous Assessment Exam
Type Threshold Percent of Grade Threshold Percent of Grade
Laboratory Exercises 0 % 20 % 0 % 20 %
Class participation 0 % 3 % 0 % 3 %
Attendance 0 % 2 % 0 % 2 %
Mid Term Exam: Written 0 % 10 % 0 %
Final Exam: Written 0 % 15 %
Final Exam: Oral 50 %
Exam: Written 0 % 25 %
Exam: Oral 50 %

Week by Week Schedule

  1. Introduction - the importance of measurement in the radio-frequency and microwave engineering, examples of everyday engineering problems. Basic measurement quantities in radio-frequency and microwave engineering: power, frequency, scattering parameters, spectrum, noise figure.
  2. Signal generators, free running generator, dynamic generator, synthesized generator
  3. RF and microwave digital frequency counter. RF and microwave power measurement, thermistor, bolometer, diode detector. Power measurement of CW, pulsed and modulated signal.
  4. Laboratory exercise I - power measurement of a laboratory synthesized generator in CW mode and power measurement of a radiocommunication equipment by using bolometer sensor and diode detector.
  5. Scattering parameters measurement: scalar and vector measurements. Scalar network analyzer and scalar calibration.
  6. Measurements in radiocommunication systems based on scalar scattering parameters measurement: antenna mismatch, measurement of transfer characteristic of a radiocommunication system
  7. Laboratory exercise II - measurement of scalar scattering parameters (return loss and insertion loss) of a microwave filter and of a down converter.
  8. Midterm exam
  9. Vector network analyzer. Calibration and vector error correction
  10. Measurement cables, connectors, fixtures, and wafer probes. De-embedding.
  11. Laboratory exercise III - measurement of transistor scattering parameters and reflection coefficient of the antenna.
  12. RF and microwave heterodyne spectrum analyzer
  13. Laboratory exercise IV - measurement of third order intercept point of a microwave amplifier, spectrum measurement, determining modulation parameters
  14. Laboratory noise sources, Y method for noise measurement, noise figure meter
  15. Final exam

Study Programmes

University graduate
Wireless Technologies (profile)
Specialization Course (2. semester)

Literature

G.H Bryiant (1993.), Principle of Microwave Measurements, Pergamon Press
---------- (1997.), RF Fundamental Measurements, Hewlett Packard
---------- (1989.), Vector Measurements of High Frequency Networks, Hewlett Packard

Laboratory exercises

General

ID 127428
  Summer semester
4 ECTS
L2 English Level
L1 e-Learning
30 Lectures
0 Exercises
12 Laboratory exercises
0 Project laboratory

Grading System

90 Excellent
80 Very Good
60 Good
50 Acceptable