electromagneticselearning.kocw.net/contents4/document/lec/2013/mokwo… · · 2014-04-01microwave...
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Electromagnetics
Microwave Engineering CHO, Yong Heui
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Microwave Engineering
EM Wave Lab 2
Introduction
David M. Pozar, “Microwave Engineering,” 2nd ed.,
John Wiley & Sons, 1997.
Robert E. Collin, “Foundations for Microwave
Engineering,” 2nd ed., IEEE Press, 2001.
0. Text
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Microwave Engineering
EM Wave Lab 3
Who is he?
0. Spirit
Oliver Heaviside (1850~1925, England)
![Page 4: Electromagneticselearning.kocw.net/contents4/document/lec/2013/Mokwo… · · 2014-04-01Microwave Engineering 4 EM Wave Lab Who is she? 0. Spirit Hedy Lamarr (1913~2000, Austria)](https://reader033.vdocuments.us/reader033/viewer/2022051320/5abdb09f7f8b9aa3088beee9/html5/thumbnails/4.jpg)
Microwave Engineering
EM Wave Lab 4
Who is she?
0. Spirit
Hedy Lamarr (1913~2000, Austria)
![Page 5: Electromagneticselearning.kocw.net/contents4/document/lec/2013/Mokwo… · · 2014-04-01Microwave Engineering 4 EM Wave Lab Who is she? 0. Spirit Hedy Lamarr (1913~2000, Austria)](https://reader033.vdocuments.us/reader033/viewer/2022051320/5abdb09f7f8b9aa3088beee9/html5/thumbnails/5.jpg)
Microwave Engineering
EM Wave Lab 5
1. Maxwell’s equations
Basic equations (기본방정식)
: Gauss(가우스)’s law
: Faraday(패러데이)’s law
: Biot-Savart(비오-사바르)’s law
: Ampere(앙뻬르)’s law
D
0 B
Bt
E
Dt
JH
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Microwave Engineering
EM Wave Lab 6
2. Explanations
Vector (벡터)
Vector: magnitude + direction
- Coordinate (좌표계):
-
Scalar: magnitude
- Real number (실수)
-
Temperature Velocity
E
),,( zyx
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Microwave Engineering
EM Wave Lab 7
Electric field (전기장)
: electric field [V/m]
- Force:
: electric flux (전속) density [C/m2]
-
: electric potential [V]
- (static) , gradient (경사)
- Energy:
: permittivity (유전율) [F/m]
-
E
D
EqF
CVQED ,
r 0
EqVW
Electricity
2. Explanations
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Microwave Engineering
EM Wave Lab 8
Magnetic field (자기장)
: magnetic field intensity [A/m]
: magnetic flux (자속) density [Wb/m2]
-
- Force:
: vector potential [Wb/m]
- , curl (회전)
- Energy
: permeability (투자율) [H/m]
-
H
B
A
BvqF LIHB ,
r 0
AB
Magnet
2. Explanations
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Microwave Engineering
EM Wave Lab 9
Product (곱)
Dot product, inner product
-
Cross product, outer product
-
zzyyxx BABABABA
zBABABA xyyxˆ)(
Right screw Projection
2. Explanations
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Microwave Engineering
EM Wave Lab 10
Gradient (경사, 구배)
Nabla (del),
-
(static field)
Peak detector
zz
yy
xx
ˆˆˆ
Map
xx
xExˆˆ
E
2. Explanations
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Microwave Engineering
EM Wave Lab 11
Divergence (발산)
Source detector, hole detector
D
0 B
zyx D
zD
yD
x
2. Explanations
Tap
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Microwave Engineering
EM Wave Lab 12
Divergence (발산)
Electric field Magnetic field
2. Explanations
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Microwave Engineering
EM Wave Lab 13
Principle of divergence
2. Explanations
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Microwave Engineering
EM Wave Lab 14
Curl (회전)
Rotation detector
,Bt
E
D
tJH
zBt
zEy
Ex
z
xy
ˆ
ˆ
2. Explanations
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Microwave Engineering
EM Wave Lab 15
Principle of curl
2. Explanations
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Microwave Engineering
EM Wave Lab 16
Maxwell’s equations
2. Explanations
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Microwave Engineering
EM Wave Lab 17
Boundary conditions (경계조건)
: continuity of normal D
: continuity of tangential E
: continuity of normal B
: continuity of tangential H
21ˆˆ DnDn
21ˆˆ BnBn
21ˆˆ EnEn
21ˆˆ HnHn
Sourceless system
2. Explanations
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Microwave Engineering
EM Wave Lab 18
Continuity of fields
: continuity of normal D
: continuity of tangential E
21ˆˆ HnHn
0C LdE
QSdDS
Gauss’ divergence theorem
D
Bt
E
Stokes’ theorem
2. Explanations
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Microwave Engineering
EM Wave Lab 19
RF 부품 산업
3. Industries
RF components for CDMA
출처: 이경남, RF부품 수요 및 산업의 변화, 정보통신정책, 2004
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Microwave Engineering
EM Wave Lab 20
Mobile RF 중장기 부품 수요
3. Industries
출처: 이경남, RF부품 수요 및 산업의 변화, 정보통신정책, 2004
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Microwave Engineering
EM Wave Lab 21
RF 세부부품별 개발동향과 주요업체(1)
3. Industries
출처: 이경남, RF부품 수요 및 산업의 변화, 정보통신정책, 2004
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Microwave Engineering
EM Wave Lab 22
RF 세부부품별 개발동향과 주요업체(2)
3. Industries
출처: 이경남, RF부품 수요 및 산업의 변화, 정보통신정책, 2004
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Microwave Engineering
EM Wave Lab 23
RF 부품 산업의 변화 요인
3. Industries
출처: 이경남, RF부품 수요 및 산업의 변화, 정보통신정책, 2004
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Microwave Engineering
EM Wave Lab 24
국내 RF 부품업체의 SWOT 분석
3. Industries
출처: 이경남, RF부품 수요 및 산업의 변화, 정보통신정책, 2004