Subsequent to Radio Wave Engineering I, in this course we will learn the fundamental items of radio waves in depth.
At first, students will be able to understand that the true carrier of information in communication is, in fact, an electromagnetic wave not a voltage-current wave. Next, skin effects will be discussed as common sense among communications engineers dealing with radio frequencies (RF). Ways of handling RF resistance in transmission lines will be discussed consequently. At the end, we will refer to higher-order modes in a parallel-plate transmission line, which leads to a deep understanding of a waveguide, together with a circular polarizer.
At first, students will be able to understand that the true carrier of information in communication is, in fact, an electromagnetic wave not a voltage-current wave. Next, skin effects will be discussed as common sense among communications engineers dealing with radio frequencies (RF). Ways of handling RF resistance in transmission lines will be discussed consequently. At the end, we will refer to higher-order modes in a parallel-plate transmission line, which leads to a deep understanding of a waveguide, together with a circular polarizer.
“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 communications engineering.
- At the end of the course, students will be able to
(1) understand that the voltage and current of a transmission line are in fact integrated amount of electromagnetic fields propagating along the line, - (2) understand why the capacitance and inductance derived for static fields in a transmission line can be used in analysis of the line for dynamic fields,
- (3) understand that we can evaluate the resistance of a transmission line, taking into account skin effect, and
- (4) acquire the characteristics of a waveguide and a polarizer on the basis of higher-order modes of a parallel-plate transmission line.
| Class schedule | HW assignments (Including preparation and review of the class.) | Amount of Time Required | |
|---|---|---|---|
| 1. | Course content and objectives of Radio Wave Engineering II | Look through the syllabus. | 190minutes |
| 2. | 1. Voltage-current and electromagnetic waves (1) Telegrapher´s equations and electromagnetic wave equations |
Reference book (2) pp. 329-332 Reference book (2) pp. 364-373 |
190minutes |
| 3. | 1. Voltage-current and electromagnetic waves (2) Telegrapher's equations derived from electromagnetic wave equations |
Reference book (2), pp.364-373 | 190minutes |
| 4. | 1. Voltage-current and electromagnetic waves (3) Poynting vector |
Reference book (2), pp.364-373 | 190minutes |
| 5. | 2. TEM waves (1) Definition (2) Transmission line analysis and circuit theory (3) Transverse mode of electromagnetic field distribution and static field distribution |
Reference book (2), pp.364-373 | 190minutes |
| 6. | 3. Radio wave propagation in conducting media (1) Overview |
Reference book (2), pp.311-315 | 190minutes |
| 7. | 3. Radio wave propagation in conducting media (2) Skin effect and resistance at radio frequencies |
Reference book (2), pp.311-315 | 190minutes |
| 8. | 3. Radio wave propagation in conducting media (3) Diffusion equations and their solutions (4) Propagation velocity |
Reference book (2), pp.311-315 | 190minutes |
| 9. | 3. Radio wave propagation in conducting media (5) Resistance at radio frequencies |
Reference book (2), pp.311-315 | 190minutes |
| 10. | 4. Higher-order modes of transmission waves (1) Overview |
Reference book (2), pp.141-149 | 190minutes |
| 11. | 4. Higher-order modes of transmission waves (2) Circular polarizer based on gratings ・polarization |
Reference book (2), pp.141-149 | 190minutes |
| 12. | 4. Higher-order modes of transmission waves (2) Circular polarizer based on gratings ・conversion manners ・operating conditions ・velocity and wavelength |
Reference book (1), pp.141-149 | 190minutes |
| 13. | 4. Higher-order modes of transmission waves (3) Higher-order mode analysis of a parallel-plate line ・analysis summery ・Interpretation of the final formula ・cutoff wavelength |
Reference book (1), pp.141-149 | 190minutes |
| 14. | Overall review of this course (1) Voltage-current and electromagnetic waves (2) TEM waves (3) Radio wave propagation in conducting media (4) Higher-order modes of transmission waves |
Have a further understanding of the overall topics that were covered using the Reference books (1),(2). | 190minutes |
| Total. | - | - | 2660minutes |
| examination | report | Total. | |
|---|---|---|---|
| 1. | 22% | 1% | 23% |
| 2. | 22% | 3% | 25% |
| 3. | 23% | 3% | 26% |
| 4. | 23% | 3% | 26% |
| Total. | 90% | 10% | - |
・Evaluation method
10％ assignment, 90％ final exam
・criteria
More than 60％ correctly answered questions out of the exercise questions on Reference book (1) is needed.
10％ assignment, 90％ final exam
・criteria
More than 60％ correctly answered questions out of the exercise questions on Reference book (1) is needed.
References
(1) Kohei Hongo: Basics in Radio Engineering, Jikkyo Shuppan Co., Ltd.
(2) Nobuaki Kumagai: Foundations of electromagnetism, Ohmsha Ltd.
(1) Kohei Hongo: Basics in Radio Engineering, Jikkyo Shuppan Co., Ltd.
(2) Nobuaki Kumagai: Foundations of electromagnetism, Ohmsha Ltd.
The following subjects should be fulfilled.
Radio wave engineering 1, Electromagnetism 1・2・3, and Vector calculus.
Radio wave engineering 1, Electromagnetism 1・2・3, and Vector calculus.
- Lunch break after the class（12:30-13:00) at the lab (12E32)
- Course that cultivates an ability for utilizing knowledge
| Work experience | Work experience and relevance to the course content if applicatable |
|---|---|
| Applicatable | He worked for a company as an antenna engineer during the period 1984-1987. |
Last modified : Sun Aug 30 04:04:15 JST 2020