VVZ API is not affiliated with ETH Zurich. Data might be outdated or incorrect. Please view the official ETHZ Vorlesungsverzeichnis for binding information.

227-0468-00L 6 Credits MSC D-HEST , D-MAVT , D-PHYS , D-ITET
You're viewing possible stale or outdated data. Please check the latest semester for more up-to-date information.

Analog Signal Processing and Filtering

Lecturers & Examiners: Prof. Dr. Hanspeter Schmid
Suitable for Master Students as well as Doctoral Students.
VVZ CR n/a

Last Updated: 2026-02-05 16:15:35

Abstract

This lecture provides a wide overview over analog filters (continuous-time and discrete-time), signal-processing systems, and sigma-delta conversion, and gives examples with sensor interfaces and class-D audio drivers. All systems and circuits are treated using a signal-flow view. The lecture is suitable for both analog and digital designers.

Objective

This lecture provides a wide overview over analog filters (continuous-time and discrete-time), signal-processing systems, and sigma-delta conversion, and gives examples with sensor interfaces and class-D audio drivers. All systems and circuits are treated using a signal-flow view. The lecture is suitable for both analog and digital designers. The way the exam is done allows for the different interests of the two groups. The learning goal is that the students can apply signal-flow graphs and can understand the signal flow in such circuits and systems (including non-ideal effects) well enough to gain an understanding of further circuits and systems by themselves.

Content

At the beginning, signal-flow graphs in general and driving-point signal-flow graphs in particular are introduced. We will use them during the whole term to analyze circuits on a system level (analog continuous-time, analog discrete-time, mixed-signal and digital) and understand how signals propagate through them. The theory and CMOS implementation of active Filters is then discussed in detail using the example of Gm-C filters and active-RC filters. The ideal and nonideal behaviour of opamps, current conveyors, and inductor simulators follows. The link to the practical design of circuits and systems is done with an overview over different quality measures and figures of merit used in scientific literature and datasheets. Finally, an introduction to discrete-time and mixed-domain filters and circuits is given, including sensor read-out amplifiers, correlated double sampling, and chopping, and an introduction to sigma-delta A/D and D/A conversion on a system level. This lecture does not go down to the details of transistor implementations. The lecture "227-0166-00L Analog Integrated Circuits" complements This lecture very well in that respect.

Resources

Lecture Notes

The base for these lectures are lecture notes and two or three published scientific papers. From these papers we will together develop the technical content.Details:https://people.ee.ethz.ch/~haschmid/asfwiki/The graph methods are also supported with teaching videos:https://tube.switch.ch/channels/d206c96c?order=episodes, and a Python-based open-source tool to manipulate graphs is available onhttps://github.com/hanspi42/signalflowgrapherSome material is protected by password; students from ETHZ who are interested can write [email protected] ask for the password even if they do not attend the lecture.

Learning Materials (Links)

General Information

Language
English
Levels
MSC
Frequency
Yearly recurring

Examination

Type
session examination
Mode
oral 30 minutes
Auf Wunsch kann die Prüfung auch auf Deutsch gemacht werden.

Course Components

Type Title Time & Place Hours
lecture Analog Signal Processing and Filtering
  • Wed 08:15-10:00 (CHN E 42)
2 h weekly
exercise Analog Signal Processing and Filtering
  • Wed 10:15-12:00 (CHN E 42)
2 h weekly

Offered In