2025 (Current Year) Faculty Courses School of Engineering Undergraduate major in Information and Communications Engineering
Linear Circuits
- Academic unit or major
- Undergraduate major in Information and Communications Engineering
- Instructor(s)
- Mahfuzul Islam A K M
- Class Format
- Lecture (Face-to-face)
- Media-enhanced courses
- -
- Day of week/Period
(Classrooms) - 5-6 Mon (S4-201(S421)) / 5-6 Thu (S4-201(S421))
- Class
- -
- Course Code
- ICT.I207
- Number of credits
- 200
- Course offered
- 2025
- Offered quarter
- 2Q
- Syllabus updated
- Jun 12, 2025
- Language
- Japanese
Syllabus
Course overview and goals
This course focuses on analysis methods in both time and frequency domains, indispensable for circuit analysis. The topics include Fourier and Laplace transforms, linearity and time-invariant circuits, frequency response of linear time-invariant circuits, nodal and mesh analyses, and two-port circuit networks. Furthermore, this course includes both distributed constant circuits and lumped constant circuits, as well as the concept of impedance matching. Students will be able to understand the analysis methods of lumped constant and distributed constant circuits, both in the time and frequency domains, and obtain a fundamental knowledge of linear circuits.
Knowledge of linear circuits is required for designing electronic circuits, which is indispensable for realizing a modernized information system. Moreover, its concept is widely applicable to designs of various linear systems beyond circuit fields.
Course description and aims
By the end of this course, students will be able to
1) analyze circuits using Fourier and Laplace transforms.
2) analyze linear time-invariant circuits.
3) understand impulse and step responses.
4) analyze two-port networks.
5) understand distributed-constant circuits and utilize them.
6) understand the concept of impedance matching and consider it for circuit designs.
Keywords
Linear time-invariant circuit, Laplace transform, Impulse response, Convolution integral, Distributed-constant circuit, Impedance matching
Competencies
- Specialist skills
- Intercultural skills
- Communication skills
- Critical thinking skills
- Practical and/or problem-solving skills
Class flow
Review the content of previous class, explain the content of each class using many examples and then describe the advanced content. Students are sometimes given exercise problems at the end of class.
Course schedule/Objectives
| Course schedule | Objectives | |
|---|---|---|
| Class 1 | Basic mathmatics and linear circuits | Explain the concepts of number, complex number, base function, linearity of circuit components, linear differential equation, etc. |
| Class 2 | Fourier series and Fourier transform | Explain the expansion method of periodic and aperiodic functions, such as the Fourier series and the Fourier transform. |
| Class 3 | Laplace transform and its properties | Explain the use of the Laplace transform to represent the transfer characteristic of a linear system. |
| Class 4 | Convolution integral | Explain the concept of convolution integral. |
| Class 5 | Linear circuit analysis by Laplace transform and frequency response of linear time-invariant circuit | Explain methods of linear circuit analysis and frequency response of linear circuit. |
| Class 6 | Nodal analysis and mesh analysis | Explain methods of nodal analysis and mesh analysis using example circuits. |
| Class 7 | Stability and temporal response of linear time-invariant circuit (basics) | Explain the stability of a linear time-invariant circuit, its impulse response, and its step response. |
| Class 8 | Midterm exam | Midterm exam |
| Class 9 | Stability and temporal response of linear time-invariant circuit (advanced) | Evaluate and analyse the stability and response of different linear circuits. |
| Class 10 | Two-port networks (Z matrix, Y matrix, F matrix, S matrix, Combination of 2-port networks) | Explain Z, Y, F, and S matrices using examples. |
| Class 11 | Properties of two-port networks | Explain the two-port networks. |
| Class 12 | Distributed-constant circuits and lumped-constant circuits | Derive the differential equations of distributed constant circuits. |
| Class 13 | Reflection and transmission of distributed-constant circuits, standing wave | Explain the reflection and transmission of distributed-constant circuits and their analogies with other physical phenomena. |
| Class 14 | Maximum power transfer theorem and impedance matching | Explain the concept of impedance matching and its applications to other physical phenomena. |
Study advice (preparation and review)
To enhance effective learning, students are encouraged to spend approximately 100 minutes preparing for class and another 100 minutes reviewing class content afterwards (including assignments) for each class.
They should do so by referring to textbooks and other course material.
Textbook(s)
Upload course materials before classes.
Reference books, course materials, etc.
Linear circuit theory, Shigetaka Takagi, Asakura shoten, ISBN 978-4-254-22163-3 C3055(Japanese)
Fundamentals of circuit theory, Ken Yanagisawa, Denki gakkai, ISBN4-88686-204-7 C3054(Japanese)
Evaluation methods and criteria
Assignments, a midterm, and a final examination will evaluate students' grades.
The weights for the assignment, midterm, and final examination are 20%, 40%, and 40%, respectively.
Related courses
- ICT.I203 ： Electric Circuits
- ICT.I312 ： Linear Electronic Circuits
Prerequisites
Students must have successfully completed Electric circuits (ICT .I203) or have equivalent knowledge.
Contact information (e-mail and phone) Notice : Please replace from ”[at]” to ”@”(half-width character).
Contacts should be made by email.
Office hours
Contact by e-mail or phone in advance to sckedule an appointment.