E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

● Teaching Staff

- Lecturer: Prof. Woo-Young Choi (최우영)Office: B625, Tel: 02-2123-2874, Email: wchoi@yonsei.ac.krtera.yonsei.ac.kr

● Class Hours- Lecture: Tue. 1:00-1:50 pm and Thur. 2:00-3:50 pm at B031

- T.A.’s: Myung Jin Shin (신명진) slyier55@gmail.com, 010-7159-4418Minkyu Kim (김민규) minkyu226@gmail.com, 010-9265-9226Office: B629, Tel: 02-2123-7709

● Goals: - Understand what EM waves are- Learn how they behave in various media

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

Brief History of Electromagnetics

Charles-Augustin de Coulomb (1736 – 1806)

Coulomb's Law (1785)

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

Alessandro Volta (1745 – 1827)Voltaic Pile: First battery (1800)

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

Andre-Marie Ampère (1775 – 1836)

Ampère's Law (1826)

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

Michael Faraday (1791 – 1867)

Faraday's Law (1831)

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

(Gauss’s Law)

(Faraday’s Law)

(Ampere’s Law + DisplacementCurrent )

(1865)

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

Heinrich Hertz (1857 – 1894)

Experimental demonstration of EM waves (1888)

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

Invention of wireless transmission

Guglielmo Marconi (1874-1937)

Trans-Atlantic transmission (1902)Nobel Prize in Physics (1909)

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

Radio Room in the movie Titanic (1912)

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

First public radio broadcast: 1910 in New York City

First TV broadcast: 1928

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

First satellite in space: Sputnik 1 (Soviet Union) in 1957

First commercial cell phone:Motorola Dyna TAC in 1973(Inventor: Martin Cooper)

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

First commercial optical fiber communication in 1977

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

EM waves have long history of

- Serious scientific investigation

- Very important applications

One of the most important and (hopefully) most exciting subject to learn

E&M 2 (16/1) W.-Y. Choi

Lect. 1: Introduction

● Textbook: “Field and Wave Electromagnetics" by D.K. Cheng

● Grades

- Quizzes: Total 25 points. Roughly once in two weeks starting on March 17, Total of 6 - Tests: Mid-term and Final, each 25 points - Project: 15 points

- Attendance: 10 pointsAbsent: -0.5 point, Late: -0.25 point

● Class web page: tera.yonsei.ac.kr (Click Classes) - Lecture notes available in PDF files

● Prerequite: E&M 1 (전자기1)

E&M 2 (16/1) W.-Y. Choi

Lect. 1: IntroductionLect. 1: Introduction

● Lunch Meeting:

Students are encouraged to participate in lunch meetings with fellow students and theprofessor for informal discussion on the course, future career plans, etc. Lunch meetingswill be held on Thursdays from 12:00 - 12:50 in B625. Sign-up sheets will be available.Sandwiches and drinks will be provided.

● Project

Each student group will select a topic of his/her interest in the area of electromagneticwaves technology, investigate the selected topic and make a poster presentation at theend of semester. Selected students will make in-class oral presentations in English.Further details will be given later in the course.

E&M 2 (16/1) W.-Y. Choi

Lect. 1: IntroductionLect. 1: Introduction

● Class Schedule (Tentative and Subject to changes)

Part I. Introduction and ReviewLect. 1: Introduction Lect. 2: Electric fieldsLect. 3: Magnetic fields Lect. 4: Time-varying fields

Part II. Plane Electromagnetic Waves

Lect. 5: Wave equationsLect. 6: Plane wavesLect. 7: PolarizationLect. 8: Plane waves in lossy media Lect. 9: Propagation through plasmaLect. 10: EM waves incident at conductorLect. 11: Oblique incidence at conductorLect. 12: Normal incidence at dielectric interface

E&M 2 (16/1) W.-Y. Choi

Lect. 1: IntroductionLect. 1: Introduction

● Class Schedule (Tentative and Subject to changes)

Part II. Plane Electromagnetic Waves (cont.)

Lect. 13: Oblique incidence at dielectric interface ILect. 14: Oblique incidence at dielectric interface IILect. 15: Total internal reflection

Part III. Transmission Lines

Lect. 15: Transmission linesLect. 16: Finite transmission linesLect. 17: Reflection in transmission linesLect. 18: Transients on transmission linesLect. 19: Transients with reactive load Lect. 20: Smith chartLect. 21: Impedance matching

E&M 2 (16/1) W.-Y. Choi

Lect. 1: IntroductionLect. 1: Introduction

● Class Schedule (Tentative and Subject to changes)

Part IV. Waveguides

Lect. 22: Solutions of EM wave Eq. in waveguidesLect. 23: TM wavesLect. 24: TE wavesLect. 25: Rectangular waveguides

If time allows, Circular waveguides, Dispersion in waveguides, Dielectric waveguides

Last week of class : Student Presentations (Poster, Oral)