Oberseminar Schaltungstechnik

Because of the current pandemic, If you are interested in this course for Winter semester 2020/2021, please contact us by email so that we can plan online lectures for you!

Contact: Dr. Bahman K. Boroujeni; or Dr. Mahdi Khafaji, or Dr. P.V. Testa, BAR 256
Location: Online course due to the current pandemic
Time: Winter-semester 2020/2021; Thursdays, 4.DS=13:00--14:300
Leistungspunkte: 2 S 2 PL
Target groups: Diplom students in the 7th to 10th semester, and Master students of Nanoelectronic Systems.
Note for Master students of Nanoelectronic Systems: you can take this as an elective course, but you should first talk to Frau Uta Strempel (BAR 177a) for administrative details.

In this course you will learn about the technical aspects related to the design of: a) practical discrete circuits, and b) analog integrated circuits. In addition, you will learn how to present and publish your work. The course consists of:

Eight weeks of lectures (one lecture per week) at the beginning of semester.
A practical work in which you will design a circuit. Here you have two options: (a) you can use LTspice which is a freeware circuit simulator widely-used in the industry for designing discrete circuits and can be easily installed on your laptop, or (b) you can use Cadence if you want to work on analog integrated circuits.
You will make a presentation about your practical work.
You will also deliver a written final report about the topic of your practical circuit design work.
There is no written exam.

LECTURES

Different types/frequency-responses/materials/applications of commercially existing capacitors, resistors, diodes, and loudspeakers.
Examples of different commercially-available op-amp ICs; and designing circuits with them.
Pulse circuits, switching power converters, and rectifier circuits. Examples of widely-used signal transistors and power transistors, their electrical characteristics and datasheets.
Basics of op-amp design, gain, speed. swing, bandwidth, power dissipation.
Study and analysis of simple one-stage and two-stage op-amps.
Introduction to distributed amplifiers and their application in future 6G systems
Distributed amplifiers design examples

PRACTICAL WORK

You choose just one topic from all options below. Please contact the supervisors if you want to suggest new topics.

Circuit design using LTspice:

Design of an audio filter and amplifier for compensating the imperfections in the frequency response of a piezoelectric loudspeaker.
Design of a RFID energy harvesting circuit, including a coil and a rectifier circuit, for AC/DC energy conversion from a magnetic field at 13.56 MHz.
Design of an energy-efficient switching DC/DC converter, e.g. 12 V to 5 V for automotive applicaions.

Circuit design using Cadence:

Design of a folded-cascode OTA in 250 nm CMOS process, including bias network and common-mode-feedback.
Design of a recycling folded-cascode OTA in 250 nm CMOS process, including bias network and common-mode-feedback.
Design of a two-stage OTA with pole-splitting compensation in 250 nm CMOS process.
Design of a Distributed Amplifier in 250 nm CMOS technology

Notes

Instructions for registration in the network (required for Cadence usage)

You need to sign the technology NDA in BAR256, to get access to the technology and Cadence.