Signals and Measurements (5cr)

Objectives

After completing the course, the student1) understands Ohm's and Kirchhoff's laws and is able to analyze simple DC and AC circuits,1) knows measurement principles and error sources,2) is able to use basic laboratory equipment, a simulation software and a data acquisition device,3) is able to measure current and voltage,4) understands the concept of frequency spectrum and is able to measure and interpret it using a measurement device,5) understands the signal sampling principle and the sampling theorem.

Content

Core contentElectrical quantities and units, the concept of analog signal: Direct and alternating current and voltage. Ohm's law. Active and reactive power. Decibel.Components and circuits:Resistor, capacitor and inductor. Direct and alternating current circuits (Kirchhoff's laws, voltage and current division).Laboratory equipment and measurements. Use of simulation software.Frequency domain analysis, the concept of spectrum. Transfer function and filter.Sampling: A/D and D/A converters, sampling theorem.Complementary knowledgeParasitic circuit elements.Grounding and the properties of metallic cables.Fourier series and Fourier transform. Filter implementations.Digital filters. Convolution.Specialist knowledgeDiode, operational amplifier.

Further information

The course gives an introduction to signals and related concepts. The main focus is on electrical signals which are essential, e.g., in electrical engineering, electronics, communications engineering, and information technology. The introduction to signals happens by doing practical measurements. At the same time we learn how to use typical measurement equipment and we get to know the basic electronic components. The course gives a practical introduction to subjects which are discussed in more detail and in more theoretical manner in later courses.Partial completions of the course must be carried out during the same implementation round. Exceptions must be discussed with the responsible teacher.