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Electromagnetics
Microwave EngineeringMicrowave EngineeringCHO, Yong HeuiCHO, Yong Heui
Microwave Microwave EngineeringEngineering
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Introduction
David M. Pozar, “Microwave Engineering,” 2David M. Pozar, “Microwave Engineering,” 2ndnd ed., ed., John Wiley & Sons, 1997.John Wiley & Sons, 1997.
Robert E. Collin, “Foundations for Microwave Engineering,” 2nd ed., IEEE Press, 2001.
0. Text
Microwave Microwave EngineeringEngineering
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Who is he?
0. Spirit
Oliver Heaviside (1850~1925, England)
Microwave Microwave EngineeringEngineering
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Who is she?
0. Spirit
Hedy Lamarr (1913~2000, Austria)
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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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2. Explanations
Vector ( 벡터 )
Vector: magnitude + direction- Coordinate ( 좌표계 ): -
Scalar: magnitude- Real number ( 실수 )-
Temperature Velocity
E
),,( zyx
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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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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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Product ( 곱 )
Dot product, inner product-
Cross product, outer product-
zzyyxx BABABABA
zBABABA xyyx ˆ)(
Right screwProjection
2. Explanations
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Gradient ( 경사 , 구배 )
Nabla (del), -
(static field)
Peak detector
zz
yy
xx
ˆˆˆ
Map
xx
xEx ˆˆ
E
2. Explanations
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Divergence ( 발산 )
Source detector, hole detector
D
0 B
zyx Dz
Dy
Dx
2. Explanations
Tap
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Divergence ( 발산 )
Electric field Magnetic field
2. Explanations
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Principle of divergence
2. Explanations
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Curl ( 회전 )
Rotation detector
,Bt
E
Dt
JH
zBt
zEy
Ex
z
xy
ˆ
ˆ
2. Explanations
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Principle of curl
2. Explanations
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Maxwell’s equations
2. Explanations
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Boundary conditions ( 경계조건 )
: continuity of normal D
: continuity of tangential E
: continuity of normal B
: continuity of tangential H
21 ˆˆ DnDn
21 ˆˆ BnBn
21 ˆˆ EnEn
21 ˆˆ HnHn
Sourceless system
2. Explanations
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Continuity of fields
: continuity of normal D
: continuity of tangential E
21 ˆˆ HnHn
0C LdE
QSdDS
Gauss’ divergence theorem
D
Bt
E
Stokes’ theorem
2. Explanations
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RF 부품 산업 3. Industries
RF components for CDMA
출처 : 이경남 , RF 부품 수요 및 산업의 변화 , 정보통신정책 , 2004
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Mobile RF 중장기 부품 수요 3. Industries
출처 : 이경남 , RF 부품 수요 및 산업의 변화 , 정보통신정책 , 2004
Microwave Microwave EngineeringEngineering
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RF 세부부품별 개발동향과 주요업체 (1)
3. Industries
출처 : 이경남 , RF 부품 수요 및 산업의 변화 , 정보통신정책 , 2004
Microwave Microwave EngineeringEngineering
EM Wave EM Wave LabLab
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RF 세부부품별 개발동향과 주요업체 (2)
3. Industries
출처 : 이경남 , RF 부품 수요 및 산업의 변화 , 정보통신정책 , 2004
Microwave Microwave EngineeringEngineering
EM Wave EM Wave LabLab
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RF 부품 산업의 변화 요인 3. Industries
출처 : 이경남 , RF 부품 수요 및 산업의 변화 , 정보통신정책 , 2004
Microwave Microwave EngineeringEngineering
EM Wave EM Wave LabLab
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국내 RF 부품업체의 SWOT 분석 3. Industries
출처 : 이경남 , RF 부품 수요 및 산업의 변화 , 정보통신정책 , 2004
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