Course title
EG0020004
Radio Wave Engineering

 HIROSE Kazuhide

TOMA Koji

ISHIKAWA Hiroyasu

YAMAGUCHI Masaki
Course description
　First, we will learn the phenomenon that voltage and current both propagate along a transmission line as a wave. This will help to understand radio waves, also known as electromagnetic waves. In other words, we will learn the basics of radio-wave transmission and acquire common sense of high frequency technologies necessary for telecommunications at the same time.
　Next, design of a wireless communication system will be mentioned. After confirming the importance of the free-space transmission loss and antenna gain in the system, antenna characteristics will be discussed. Multi-antenna technologies would be referred at the end so that one can understand its significance, which is that it can bring broadband communication to the wireless environment just as fiber-optic communication.
Purpose of class
“Electromagnetic waves" supporting mobile networks such as mobile phones and wireless LAN could also be interpreted as "Light" traveling in an optical fiber which is known as the protagonist of broadband communication. In this course, we will learn electromagnetic waves that enable optical and wireless communications. Students will be well grounded in this filed as a student of electrical engineering.
Goals and objectives
  1. At the end of the course, students will be able to
    (1) understand the phenomenon that both voltage and current propagate as a wave along a transmission line, which is the basics of radio-wave transmission,
  2. (2) understand the free-space transmission loss and antenna gain in a wireless communication system,
  3. (3) learn the basics commonly shared in a wide variety of antennas, and
  4. (4) understand the broadband communication using multi-antenna technologies.
Relationship between 'Goals and Objectives' and 'Course Outcomes'

 quizzes Total.
1. 23% 23%
2. 27% 27%
3. 27% 27%
4. 23% 23%
Total. 100% -
Evaluation method and criteria
・Evaluation method
　100％ quizzes

・criteria
　More than 60％ correctly answered questions out of the exercise questions on Reference book (1) is needed.
Language
Japanese
Class schedule

 Class schedule HW assignments (Including preparation and review of the class.) Amount of Time Required
1. Course content and objectives of Radio Wave Engineering Have a look at (1) and (2) of the reference book 190minutes
2. 1. Basics of transmission wave
(1) Outline
(2) Telegrapher's equations and their solutions 		Reference book (1), pp. 8-11. 190minutes
3. 1. Basics of transmission wave
(2) Telegrapher's equations and their solutions
(3) Incident and reflected waves 		Reference book (1), pp. 11-14,20-21 190minutes
4. 1. Basics of transmission wave
(4) Characteristic impedance and reflection coefficient 		Reference book (1), pp. 12,27-28 190minutes
5. 1. Basics of transmission wave
(5)Transmission velocity 		Reference book (1), pp. 16-19 190minutes
6. 1. Basics of transmission wave
(6) Input impedance
(7) Electromagnetic waves 		Reference book (1), pp. 24-25,64-65 190minutes
7. 2. Wireless-communication system design
(1) Example of communication system
(2) Friis transmission formula 		Reference book (2), pp. 115-117 190minutes
8. 3. Antenna characteristics
(1) Effective area 		Reference book (2), pp. 113-115 190minutes
9. 3. Antenna characteristics
(2) Gain 		Reference book (1), pp. 106-110 190minutes
10. 3. Antenna characteristics
(3) Radiation pattern 		Reference book (1), pp. 180-182 190minutes
11. 3. Antenna characteristics
(4) Gain calculation 		Reference book (2), pp. 30-35 190minutes
12. 4. Radio wave propagation and multi-antenna technology
(1) Multi-path fading of radio wave
(2) Antenna diversity 		Reference book (2), pp. 48-53 190minutes
13. 4. Radio wave propagation and multi-antenna technology
(3) Adaptive array antenna
(4) MIMO（Multiple-Input Multiple-Output） 		Reference book (2), pp. 48-53 190minutes
14. Overall review of this course
(1) Basics of transmission wave
(2) Wireless-communication system design
(3) Antenna characteristics
(4) Radio wave propagation and multi-antenna technology 		Use Reference book (1),(2) and revise topics that were covered in this course. 190minutes
Total. - - 2660minutes
Feedback on exams, assignments, etc.
ways of feedback specific contents about "Other"
Feedback in the class
Textbooks and reference materials
References
(1) Matsuda, Miyata, Nanbu (co-authored): Radio Engineering, Corona Pablishing Co., Ltd.
(2) Kyohei Fujimoto: Introduction to radio applications [2nd edition], Kyoritsu Shuppan Co., Ltd.
Prerequisites
It is desired to have finished the following courses:
Electric circuit and Electromagnetism.
Office hours and How to contact professors for questions
  • Lunch break after the class（12:30-13:00) at the lab (12E32)
Regionally-oriented
Non-regionally-oriented course
Development of social and professional independence
  • Course that cultivates an ability for utilizing knowledge
Active-learning course
N/A
Course by professor with work experience
Work experience Work experience and relevance to the course content if applicable
N/A N/A
Education related SDGs:the Sustainable Development Goals
  • 9.INDUSTRY, INNOVATION AND INFRASTRUCTURE
Last modified : Sat Mar 08 04:28:14 JST 2025