Microwave and RF Technology (SS)

 

 Lab Registration

Important information

Register here

Lecturer

Prof. Dr.-Ing. Klaus Solbach / M.Sc. Le Chen

Volume

4 semester hours (L2, E1, Lab1), Auxiliary Seminar (S2)

Dates

  Lecture Exercise Seminar Lab *  **
Date: Monday
12:00 - 14:00
Monday
14:00 - 15:00
 

Monday
15:00 - 16:00

See current items, lab results
Place: BA 026 BA 026 BA 026 BB 1013
Begin: 11.04.2016 18.04.2016 18.04.2016 26.04.2016

*: Online registration required. Open from 11th to 22nd April (Only for ISE-students)!

**: EIT-students will have a different lab "Elektronik und Hochfrequenztechnik Praktikum" in the 5th semester (WS 2016/2017)!

Further information will be shown under the category News!

Contents

  1. Introduction
  2. Passive Linear Circuit Elements
  3. Passive Linear Circuits
  4. Electronic (active) Circuits
  5. Transmission Lines
  6. Smith Chart
  7. Special Types of Transmission Lines
  8. Pulses on Transmission Lines

Description

Chapter 1 - Introduction

The lectures starts with a short history of Radio Frequency (RF) engineering. After a short introduction of the alternating current phasor notation, used in the lectures, the frequency dependency of the three important network elements R, L and C is described briefly as a repetition of the lectures "Fundamentals of Electrical Engineering".

Chapter 2 - Passive Linear Circuit Elements

The behavior of technical RF-components is discussed, in particular the resistor R, the inductor L and the capacitor C. At high frequencies impedance differs from that at low frequencies, because of loss, capacitive or inductive effects, the so-called parasitic elements. The skin effect is introduced which becomes important by increasing the resistance of conductors.

Chapter 3 - Passive Linear Circuits

Linear circuits based on L- and C-elements are presented which are used to realize impedance transformers, reactive compensation and frequency filters.

Chapter 4 - Electronic (active) Circuits

Active circuits are discussed using RF amplifiers as an example; the principle characteristics of gain, noise, stability and impedance match are derived based on the transistor equivalent circuit representation.

Chapter 5 - Transmission Lines

From an equivalent circuit representation the waves on transmission lines are derived and concepts of charcteristic impedance, reflection coefficient and impedance transformation are presented. Current and voltage on a transmission line are described by the transmission line equations.

Chapter 6 - Smith Chart

With the help of the complex reflection coefficient, transmission line transformations can be visualized by a grafical tool, the so-called Smith Chart: Normalized impedances or admittances on a transmission line are linked with the positve or negative reflection coefficient in the Smith Chart.

Chapter 7 - Special Types of Transmission Lines

Various types of practically important transmission lines are analyzed. Parameters as the characteristic impedance or the propagation constant are calculated from the geometry and the material properties.

Chapter 8 - Pulses on Transmission Lines

The propagation of non-sinusoidal signals on transmission lines are investigated through the spectral functions of the signals (Fourier-Transformation) using the results of the transmission line theory for harmonic oscillations.

Download

Lecture script, exercises, seminar problems and additional aids can be downloaded here.

 

Recommended literature

    • Steer, M. B.: Microwave and RF Design: A Systems Approach
      Beta ed.. - Raleigh, NC: SciTech Publ., 2009
      Uni Library Signature: YFD 4794
    • Pozar, D. M.: Microwave and RF Design of Wireless Systems
      1st Edition, John Wiley & Sons 2000
      Uni Library Signature: YDA 1612
    • Ludwig, R. ; Bretchko, P.: RF Circuit Design - Theory and Applications
      New Jersey: Printice-Hall 2000
      Uni Library - n/a
    • White J. F.: High Frequency Techniques - An Introduction to RF and Microwave Engineering
      1st Edition, John Wiley & Sons 2004
      Uni Library Signature: YDA 1727
    • Meinke, H.H.; Gundlach, F.W.: Taschenbuch der Hochfrequenztechnik
      5. überarbeitete Auflage, Berlin: Springer 1992
      Uni Library Signature: YDA 1052
    • Zinke, O.; Brunswig, H.: Hochfrequenztechnik,
      • Band 1 (Hochfrequenzfilter, Leitungen, Antennen)
        6. Auflage, Berlin: Springer 2000
        Uni Library Signature: YDA 1125-1
      • Band 2 (Elektronik und Signalverarbeitung)
        5.Auflage, Berlin: Springer, 1999
        Uni Library Signature: YDA 1125-2
    • Voges, E.: Hochfrequenztechnik: Bauelemente, Schaltungen, Anwendungen
      3., völlig neu bearb. und erw. Aufl.. - Bonn: Hüthig, 2004
      Uni Library Signature: YDA 1353

Helpful links to the lecture

    • Theorie der Hochfrequenzleitungen (Teilskript), Prof. Dr.-Ing. A. Ziermann, Aachen
    • Dämpfungsmaße und Pegel, Prof. Dr.-Ing. A. Ziermann, Aachen
    • Empire XCcel, Finite Difference Time Domain (FDTD) Simulation Software introduced in the lecture and exercise. Send the license request for a student license to Simon Otto
    • Amanogawa, Various JAVA™-applets for learning transmission lines and electromagnetic waves
    • Smith V3.01 Setup, Smith Chart Tool from Berne University of Applied Sciences
    • Ansoft, Employer of RF- und Microwave-CAD-software - free student version of "Ansoft Designer SV" is available
    • Aplac, Microwave-circuit simulation - free student version of "Aplac
    • Educator's Corner, Electrical engineering insight, pre-written and interactive experiments, lecture assistance, reference materials, lab exercises, teaching tools, engineering student resources and various research materials
    • High Frequency Sites, Home pages of research facilities and groups whos main interests are concentrated in the area of high frequency and electromagnetic research and technologies
    • Sonnet, Modern microwave-EM-simulator in order to develop 2D und 3D-structures - free SONNET-Lite-version for testing