1. 전자장 일정표 9월 일 월 화 수 목 금 토 1 2
Lect. 1 3 4 5 6 7
Lect. 2, 3 8 9
Lect. 4 10 11
Lect. 5, 6
(11-1, B039) 12 13
Tutorial
6-7, B039 14
Lect. 7, 8 15 16
Lect. 9 17 18 19 20
Tutorial
6-7, B039 21
Lect. 10,11 22
23 Q/A
Test#1
7-9 at C040 24 25 26 27 추 28 석 29 30
Test #1
Solutions

2. Yonsei Univ. High-speed information transmission Lab.
Lect. 4 Polarization
Time varying characteristics of E-field direction
Consider
How does E-field direct change in time at Z=0? (What is its polarization?)
1) E1=0 and E2= not(0) 이면  y
※ E-field 는 y축 방향으로 왕복운동
Linear polarization
(Animation) x
What if E1 = E2?
Yonsei Univ. High-speed information transmission Lab.

3. Yonsei Univ. High-speed information transmission Lab.
Lect. 4 Polarization
2) E2 = j E1 and E1 real y
※ E-field traces a circle: See Animation x
Circular polarization (RHCP)
What if E2 = -jE1 and E1 real ? LHCP
Take the propagation direction (-z in this case) as reference:
Right Hand Circular Polarization (RHCP) or
Left Hand Circular Polarization (LHCP)
Yonsei Univ. High-speed information transmission Lab.

4. Yonsei Univ. High-speed information transmission Lab.
Lect. 4 Polarization
3) In general, y
In elliptical polarization,
both magnitude and direction change.
Can be right-handed or left-handed
Depending on sign of x
※ HW) Prob. 1-b in 1999 test 1
Yonsei Univ. High-speed information transmission Lab.