Ky Thuat Sieu Cao Tan (Slide GT Hay)

8/13/2019 Ky Thuat Sieu Cao Tan (Slide GT Hay)

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K THUT SIU CAO TN(Microwave Engineering)S

tit : 42 ; LT:28; BT:14

Kim tra: 30% Kim tra vit

gia k

(60')

Bi tp: 20%Bi tp nh

Thi cui k: 50% Thi vit

cui k

(90')


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Ni dung mn hc:

Gii thiu v

k

thut phn tch mch in

tn s

siu cao, khi nim

thng s

phn b

v

ma trn tn x

ca cc phn t

mch in, mt s

mch siu cao tn cbn.Ni dung mn hc gm 3 chng chnh nhsau:

Chng 1: Gii thiu khi nim ng dy truyn sng, h

s

phn x,

h

s

sng ng, tr

khng ng dy.

Chng 2: Cu trc v

ng dng ca

th

Smith trong phn tch v

thit k mch siu cao tn.

Chng 3: Ma trn tn x, cc c tnh v

ng dng.

Sinh vin cn c th tm hiu nhiu khi nim su hn v cc mchchuyn dng siu cao tn mn hc tip theo:Mn Mch siu cao tn.


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Ti liu

Gio trnh:

Vnh Thnh, L thuyt cs

k

thut siu cao tn, NXB KHKT,

1997

Ti liu tham kho:

Devendra K. Misra, Radio Frequency and Microwave Communication

Circuits analysis and design, John Wiley & Sons, 2001

Guilermo Gonzalez, Microwave transistor amplifier analysis and

design, prentice Hall, 1984

Samuel Y. Liao, Microwave Circuits and Devices, Prentice Hall, 1987.

David M. Pozar, Microwave Engineering, Addison-Wesley PublishingCo., 1993.


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Cc di tn s

Theo IEEE Institute of Electrical and Electronics Engineers ngha l "Hc Vin k nghin v in T


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ng dng ca k thutsiu cao tn

Truyn thng

Qung b: TV, radio

H

thng di ng: GSM, CDMA, Wimax,

Thng tin v

tinh

GPS,

Radar

Gim st khng lu

Dn ng cho tn la

Cc lnh vc khc

Sy, nu nng

iu tr

bnh

Truyn dn nng lng Nghin cu thin vn


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Mch khuch i cng sut SCT

(s dng cp ng trc phi hp trkhng)

Mt s mch siu cao tn


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Mch khuch i cng sut SCT, s

dng cng ngh

vi di


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Mch khuch i SCT, s

dng dy chm vi di

phi hp tr

khng


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11/277

Circulator

Port1

Port2

Port3


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Circulator , tn hiu vo port 1

Port1

Port2

Port3


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Port1

Port2

Port3

Circulator , tn hiu vo port 3


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MMIC(Monolithic Microwave Integrated Circuits)


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B

xoay (dch) pha 6 bit


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Phn mm RFSim99 h

tr

thit k

mch RF, SCT

Phn mm

h tr thit k


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Phn mm CST Microwave studio


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Thit bo


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in trng trn dy song hnh (Parallel wire/ twin wire)

Mt sng truyn sng thc t


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Ttrng trn dy song hnh


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Cp ng trc (coaxial cable)


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in trng trn ng truyn vi di (microstrip line)


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Ttrng trn ng truyn vi di


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Coplanar waveguide

Strip line


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ng dn sng (waveguide)


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Mt v

d

Mch ghp vng

4

4

4

1 2

3 4

3

4


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1

ng Day Truyen SongHe So Phan Xa, Tr Khang ng DayHien Tng Song ng, He So Song ng


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2

I.

ng

Day Truyen Song

Phan Tch ng Day Truyen Song

V

f

=


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3


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4

Cac Thong So S Cap Cua ng Day Truyen Song

R (Ohm/m) : ien tr tuyen tnh, ac trng cho ien trthuan cua mot n v chieu dai day dan.

L (H/m) : ien cam tuyen tnh, ac trng cho ien camtng ng cua mot n v chieu dai ng truyen song.

C (F/m) : ien dung tuyen tnh, ac trng cho ien dungtren mot n v chieu dai ng truyen song.

G (S/m) : ien dan tuyen tnh, ac trng ien dan thuan

cua lp ien moi tren mot n v dai ng truyen song.


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5

1) Phng Trnh Truyen Song

T

nh luat Kirchoff ve

ien ap:( , )

( , ) ( , ) . . ( , ) . . i x t

v x t v x x t R x i x t L xt

= + + +

T nh luat Kirchoff ve dong ien: ( , )( , ) ( , ) . . ( , ) . .

v x x t i x t i x x t G x v x x t C x

t

+ = + + + +

( )i


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6

( , )( , ) ( , ) . . ( , ) . .

( , )( , ) ( , ) . . ( , ) . .

i x tv x t v x x t R x i x t L x

t

v x x t i x t i x x t G x v x x t C x

t

= + + +

+ = + + + +

( , ) ( , ) ( ). . ( , )

( , ) ( , ) ( ). . ( , )

V x V x x R j L x I x

I x I x x G j C x V x x

= + + +

= + + + +

Chuyen sang mien tan so:

( , ) ( , )( ). ( , )

( , ) ( , )( ). ( , )

V x x V xR j L I x

xI x x I x

G j C V x xx

+ = +

+ = + +

Suy ra:

( ) ( )V x x V x +


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7

( , ) ( , )( ). ( , )

( , ) ( , ) ( ). ( , )

V x x V xR j L I x

x

I x x I x G j C V x xx

+ = +

+

= + +

Khi: 0x

( , )( ). ( , )

( , ) ( ). ( , )

V xR j L I x

x

I x G j C V xx

= +

= +

2

2

2

2

( , )

( )( ). ( , )

( , )( )( ). ( , )

V x

R j L G j C V xx

I xR j L G j C I x

x

= + +

= + +

2 ( )V x


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8

at: ( ) ( )( )R j L G j C = + +

2

2

2

( , )( )( ). ( , )

( , ) ( )( ). ( , )

V xR j L G j C V x

x

I x R j L G j C I xx

= + +

= + +

22

2

22

2

( , )( ). ( , )

( , )( ). ( , )

V xV x

xI x

I xx

=

=

Moi phng trnh co dang:1 2 1'' . ' . 0 , 0f a f a f a+ + = =

2) N hi C Ph T h T S


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9

2) Nghiem Cua Phng Trnh Truyen Song

22

2

( , )( ). ( , )

V xV x

x

=

( ). ( ).

( , ) . .

x x

V x V e V e

+ = +

Phng trnh:

Nghiem co

dang:

. .( ) . .x xV x V e V e + = +

j = +Vi:

. . . .( ) . . . .x j x x j xV x V e e V e e + = +

j j


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. . . .( ) . . . .x j x x j xV x V e e V e e + = +

. .

. .x j x

V e e

+

Xet thanh phan th

1:

Xet thanh phan th

2:. .

. .

x j x

V e e

(Song ti)

(Song phan xa)


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11

2 2

2

( , ) ( ). ( , )I x I xx

=

Phng trnh song dong ien:

Co nghiem: . .( ) . .x xI x I e I e + = +

0 0

,V V

I IZ Z

+ + = =

Quan he vi song ien ap:

. .

0 0

( ) x xV V

I x e eZ Z

+ =

3) C Th S Th C C D T S


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12

3) Cac Thong So

Th

Cap Cua ng Day Truyen Song

a) He So Truyen Song:( ) ( ) ( ) ( )( )j R j L G j C = + = + +

b) He So Suy Hao: [ ]( ) , /Np m [ ]( ) , /dB m [ / ]

[ / ] 10 10 [ / ]

[ / ]

20.log (20log ).

8,68.

Np m

dB m Np m

Np m

e e

= =

=

V

du:Mot ng truyen song co

he

so

suy hao la1 Np/m, tc la khi song lan truyen qua 1 mchieu dai ng truyen song th

bien o

seb suy hao 8,68 dB (2,7 lan).

[ ] [ ]


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13

c) He

So

Pha: [ ] [ ]( ) , / , /rad m m o

The hien o thay oi pha cua song khi song lan truyentren mot n v chieu dai ng truyen song.Quan he gia he so pha va bc song:2

=

* Trng Hp ng Truyen Khong Ton Hao:0, 0

( ) ( )( )

( ) 0

( )

R G

R j L G j C j LC

LC

= =

= + + =

=

=

d) Tr Khang ac Tnh ( Z ) :


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14

d) Tr

Khang ac Tnh ( Z0 ) :


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15

at:

0 0

1//Z Z x Z

Y x

= +

,Z R j L Y G j C = + = +

Khi: 0x 0Z R j L

ZY G j C

+ = =

+

ng truyen khong ton hao: [ ]0 0 ,L

Z RC

= =


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16


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17

e) Van Toc Truyen Song (Van toc pha):

La

quang ng song lan truyentrong moi n v thi gian.

[ / ], [ / ]

[ / ]

rad sV m s

rad m

= =

EX 3.2 P66, EX 3.3 P67

II. He SoPhan Xa,Tr Khang ng Day


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18

. .( ) . .x xV x V e V e + = +

a) He

So

Phan Xa

ien Ap:

=song phan xa

( )song ti

x

+ +

= = 2( )x

x

V x

V e Vx e

V e V

1) He

So

Phan Xa

b) He So Phan Xa Dong ien


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19

b) He

So

Phan Xa

Dong ien

2 20

0

( ) ( )

x

x xI Vx

V

ZI e Ix e e xVI e I

Z

++ +

= = = =

. .( ) . .x xI x I e I e + = +

. .

0 0

( ) x xV V

I x e e

Z Z

+ =

Thong thng ch quan tam ti he so phan xa

ien ap, quy uc: V =

c) S Phan Xa Cong Suat


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20

( )( ). .. . ,x xP V e I e + +=ti ( )( ). .. .x xP V e I e =phan xa( ) ( ). . . .. . . .x x x xP V e V e I e I e + + = + +t

( ) ( ). .. 1 ( ) . 1 ( )x xV IP V e x I e x + + = + + t

( )2 21 ( ) ( )V VP

P P x P P x= =

phan xa

t ti ti ti

c) S

a a

Co g Suat

d) Tnh He SoPhan Xa Tai mot iem bat kyTh Q H S h X T i T i


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21

Tai tai: 2( ) lVV

l eV

+

=

Tai iem ( ) :x l d= 2 2 ( )

2 2 2

( )

. ( ).

x l dV

l d d

V

V Vx e eV V

V

e e l eV

+ +

+

= =

= =

Thong Qua He

So

phan Xa

Tai Tai:

2( ) ( ) dV Vx l e =


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22

( ) ( ).V Vx l e

Vi: j = +2 2( ) ( ). .d j dV Vx l e e

=


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23

2 2( ) ( ). .d j d

V V

x l e e =

Khi dich chuyen ve

pha nguon mot oanVector se xoay mot goc bao nhieu?

/ 2d =

V

2

=

2 22 2 2 2

2d d

= = =

) H S Ph X T i T i


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24

e) He

So

Phan Xa

Tai Tai:

. .( ) . .l lV l V e V e + = +

. .

0 0

( ) l lV VI l e eZ Z

+ =

. .( ) . .l lV l V e V e + = +


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25

. .

0 0( )

l lV V

I l e eZ Z

+

=

0

( )

( )

l l

L l l

V e V eV l

Z ZI l V e V e

+

+

+= =

0 0

1

1 ( )1 ( )

1

l

l

L l

l

V e

V e lZ Z ZV e l

V e

+

+

+

+ = =

0

0

( ) L

L

Z Zl

Z Z

=

+

f) Mot SoTrng Hp ac Biet:


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26

Trng hp tai phoi hp tr khang:

0

0( ) 0

L

L

Z Z

l Z Z

= =

+2( ) ( ). 0 ,dx l e x = =

Khong co song phan xaTr

khang ac tnh chuan: 50 , 75 , 300 , 600

Trng hp tai noi tat:


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27

0

0

( ) 1L

L

Z Zl

Z Z

= =

+Phan xa

toan bo

( )

l

l ll

V el V e V e

V e

+

+ = =

Tai tai, song ti va

song phan xa

ngc pha nhau ( ) 0V l =

Trng hp tai H mach:


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28

0

0

( ) 1 ( ) 1LI

L

Z Zl l

Z Z

= = =

+

Phan xa

toan bo

( ) 0

l l

I e I e I l

+ = =

Tai tai, song dong ien ti va

phan xa

triet tieu nhau

Trng hp tai Thuan khang:


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29

0

0

( ) L

L

jX Rl

jX R

=

+Phan xa

toan bo

( ) 1l =

2) Tr Khang ng Day


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30

= ( )( ) ( )V xZ x I x

. .( ) . . (1)x xV x V e V e + = +


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31

. .

0 0

( ) (2)x xV VI x e eZ Z

+ =

. .

0 . .

. .

( ) . .

x x

x

V e V e

Z x Z V e V e

+

+

+

=

Tai Tai:

. .. ( ) ( ) . .l lL

Z I l V l V e V e

+ = = +

( )( )

( )L

V lZ l Z

I l

= =

T

(2) ta co: . .0. ( ) . .

x x

Z I x V e V e

+ =

. .

0. ( ) . .l lZ I l V e V e

+ =

. .. ( ) . .l lLZ I l V e V e

+ = +


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32

. .0

( )

. ( ) . .

L

l lZ I l V e V e

+

+

=

.

0

.

0

( )( )

2( )

( )2

l

L

l

L

I lV Z Z e

I lV Z Z e

+

= +

=

. .

0 . .

. .( )

. .

x x

x x

V e V eZ x Z

V e V e

+

+

+=

Thay vao :

( ) ( )0 0

0 ( ) ( )

0 0

( ) ( )( )

( ) ( )

l x l xL L

l x l x

L L

Z Z e Z Z eZ x Z

Z Z e Z Z e

+ + =+

Ta co: = ( )d l x


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33

00

0

( ) ( )( )( ) ( )

d d d d

Ld d d d

L

Z e e Z e eZ x ZZ e e Z e e

+ + = + +

Ap dung:

+ = =( ) , ( )2 2

u u u ue e e ech u sh u

00

0

. ( ) . ( )( )

. ( ) . ( )

L

L

Z ch d Z sh dZ x Z

Z sh d Z ch d

+ =

+

= =

+

( )( )

( )

u u

u u

sh u e eth u

ch u e eVa:

00

0

. ( )( )

. ( )

L

L

Z Z th dZ x Z

Z Z th d

+ =

+

Trng hp ng day khong ton hao:

j


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34

=

= 0 0 , So thcj

Z R

Khi o:

= = +( ) ( )

j d j d

d j d

e e

th d th j d e e

Ap dung: = +cos( ) sin( )jue u j u

= =

2 sin( )( ) . ( )

2 cos( )j d

th j d j tg d d

00

0

. . ( )( )

. . ( )

L

L

Z j R tg dZ x R

R j Z tg d

+ =+

Mot So Trng Hp ac Biet:


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35

Trng hp tai phoi hp tr

khang

= 0 , So thcLZ R

00 0

0

. . ( )( ) ,

. . ( )

L

L

Z j R tg dZ x R R d x

R j Z tg d

+ = =

+hoac

Trng hp tai noi tat:


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36

g p

= 0LZ

0

0 00

. . ( )

( ) . . ( ). . ( )

L

L

Z j R tg d

Z x R j R tg dR j Z tg d

+ = =

+

( ) . ( ) ,Z x j X d = thuan khang

0( ) . . ( ) . ( ) ,Z x j R tg d j X d= = thuan khang


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37

Noi tat

H

Mach

ng dung ng day truyen song e

thay the

cac phan tien cam, ien dung (

1 tan so

nhat nh)

Trng hp tai h mach:


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38

= LZ0 0

00

0

. . ( )

( ) . . ( ) . ( )

. .cotg( )

L

L

Z j R tg d R

Z x R R j Z tg d j tg d

j R d

+ = =

+=

( ) . ( ) ,Z x j X d = thuan khang

0( ) . .cotg( ) . ( ) ,Z x j R d j X d= = thuan khang


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39

Noi tat

H

Mach

Trng hp tai Thuan khang:


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40

= .L LZ j X

0

0

0

. . ( )

( ) ,. ( )

L

L

jX j R tg d

Z x R R X tg d

+

= Thuan ao

( ) :Z x thuan khang

Xc nh tr

khng c tnh , tr

khng ti , v

h

s

truyn sng qua vic

o c thc t: p77, Ex 3.9

ng Truyen Mot phan t

bc song


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41

4l

=

inZ

0R LZ

0L inZ Z=

Neu tai h mach:

20

in

L

RZ

Z =

0L inZ Z =

Neu tai ngan mach:

ng dung lam mach bien oi tr

khang

2

0in

L

RZZ

= 0 .L inR Z Z =

00

0

. . (

)(0)

. . ( )

L

L

Z j R tg lZ R

R j Z tg l

+=

+T:

Ex 3.5 p71

ng Truyen Na bc song


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42

2l =

inZ

0Z LZ

in LZ Z=

3) Quan he gia tr khang ng day va he sophan xa:


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43

.

. . .

0 0 .. .

.

.1

. . .( )

.. . 1.

x

x x x

xx x

x

V e

V e V e V eZ x Z Z

V eV e V eV e

+ +

+ +

++

= =

0

1 ( )

( ) 1 ( )

x

Z x Z x

+

=

0

0

( )( ) ( )

Z x Zx Z x Z

= +

Ex: 3.11 p78, (cch 2 p80)

4) Dan Nap ng Day:1


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44

= = +

1( ) ( ) ( )( )Y x G x jB xZ x

00

0

. ( )( )

. ( )

L

L

Z Z th dZ x Z

Z Z th d

+=

+

T:

0

0 0

. ( )1( ) .

. ( )

L

L

Z Z th dY x

Z Z Z th d

+ =

+0

0

0

1/ 1/ . ( )( ) .

1/ 1/ . ( )

L

L

Y Y th d Y x Y

Y Y th d

+ =

+

00

0

. ( )( ) .

. ( )

L

L

Y Y th d Y x Y

Y Y th d

+ =

+

5) Tr Khang Chuan Hoa, Dan Nap Chuan Hoa


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45

0

( )( )

Z xz x

Z=

Tr khang chuan hoa:

Dan nap chuan hoa:

0

( )( )

Y xy x

Y=

III. Hien Tng Song ng, He So Song ng1) Hien Tng Song ng


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46

1) Hien Tng Song ng

Song ti va

song phan xa

giao thoa tao ra caciem bung song va nut song.

t = 0t = T/8t = T/4t = 3T/8t = T/2


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47

x

xSongTong

Song ti,song phan xa

2

4

MaxV

MinV

2) He

So

Song ng

Ap dung oi vi ng day khong ton hao


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48

Max

Min

VS VSWR

V= =

( ) . .j x j x

V x V e V e

+ = +Ta co:

MinV = Bien o song ti bien o song phan xa

,Max MinV V V V V V + + = + =

1

1S

+ =

V V V V S

V V V V

+ + +

+ + +

+ + = =

MaxV = +Bien o song ti bien o song phan xa

Ex. 3.13 p86

Bung ien ap ~ Nut dong ien


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49

~Max MinV I

0 01 .1

MaxMax

Min

VR R R SI

+ = = =

Tai o

tr

khang ng day la

so

thc, cc ai

( )0

1Min

VI

R

+ =

MinI I I I I+ + += =

.MaxV V V V V + + += + = + Va :

Nut ien ap ~ Bung dong ien


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50

Tai o

tr

khang ng day la

so

thc, cc tieu

00

1

1

MinMin

Max

V RR R

I S = = =+

~Min MaxV I

MaxI I I I I+ + += + = +

( )0

1Max VIR

+ = +

.MinV V V V V + + += = Va :

Xc nh tr

khng ng dy bng cch o h

s

sng ng, p86

Ex3.14


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52

TOM TAT CHNG 1

I. ng Day Truyen Song


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54

Cac Thong So S Cap Cua ng Day R (Ohm/m) : ien tr tuyen tnh L (H/m) : ien cam tuyen tnh C (F/m) : ien dung tuyen tnh

G (S/m) : ien dan tuyen tnh

1) Phng Trnh Truyen Song


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55

22

2

2

22

( , )( ). ( , )

( , ) ( ). ( , )

V xV x

x

I x I xx

=

=

22

2

22

2

( ). ( )

( ). ( )

V xV x

x

I xI x

x

=

=

Ch

xet

mot tan so:

2) Nghiem Phng Trnh Truyen Song


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56

. .( ) . .x xV x V e V e + = +

Song Phan XaSong Ti

. .( ) . .x xI x I e I e + = +

0 0,

V V

I IZ Z

+

+ = =

3) Cac Thong So

Th

Cap


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57

He So Truyen Song: ( ) ( ) ( )j = +He

So

Suy Hao: [ ]( ) , /Np m [ ]( ) , /dB m

He

So

Pha: [ ] [ ]( ) , / , /rad m m o

2=

Tr

Khang ac Tnh :

[ ]0,Z

ng truyen khong ton hao

:0 0Z R

II. He So Phan Xa, Tr Khang ng Day


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58

1) He

So

Phan Xa: = Song Phan Xa

Song Ti

He

So

Phan Xa

Tai Tai :

0

0

( ) LZlZ

= =+

L

L

ZZ

V I =

Tnh He So Phan XaTai iem x thong qua :L 2( ) . dLx e =

2) Tr Khang ng Day:


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59

3) Dan nap ng day :

ng truyenkhong ton hao:

00

0

. ( )( )

. ( )

L

L

Z Z th dZ x Z

Z Z th d

+=+

00

0

. ( )( ) .

. ( )

L

L

Y Y th d Y x Y

Y Y th d

+=

+

00

0

. . ( )( )

. . ( )

L

L

Z j R tg dZ x R

R j Z tg d

+=

+

4) Quan He

Gia Tr

Khang ng Day Va

He

So

Phan Xa


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60

5) Tr Khang Chuan Hoa:

01 ( )( )1 ( )

xZ x Zx

+ =

0

0

( )( )( )

Z x ZxZ x Z

=+

0

( )( ) Z xz xZ

=

0

( )( ) Y xy xY

=Dan Nap Chuan Hoa:

III. Hien Tng Song ng, He So Song ng1) Hien Tng Song ng


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61

Song ti va

song phan xa

giao thoa tao ra cac

iem bung song va nut song.

2) He

So

Song ng

1


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62

11

S VSWR+ = =

Bung ien ap ~ Nut dong ien

0 0

1.

1

Max

MaxMin

VR R R S

I

+ = = =

Nut ien ap ~ Bung dong ien

00

1

1

MinMin

Max

V RR R

I S

= = =

+

Chng 2: O TH SMITH


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1

I. Gii Thieu

l

SZ

0Z LZS

E

0x

x

d

( ), ( )x Z x

SZ

0Z LZS

E


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2

l0

x

xd

0

1

1Z Z

+ =

Z


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3

0

1

1

Zz r jx

Z

+ = = = +

Re( ) Im( )j = +

Ch

Xet Tr

Khang a chuan hoa

theo 0Z


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4

1r


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5

1, 0 ,1 1

r

r r =

+ + Tam : Ban knh


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1) Mo Ta o Th Smith

II. o Th Smith


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8

1) Mo Ta o Th Smith

Phoi hp

tr khang

Vong Tronn V 1, 0r = =Cac ng

tron ang rIm( )


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9

tr khang0, 1, 0r x = = =

1, z = = H MachNoi tat

1, 00, 0

zr x

= =

= =

Cac ngtron ang x

Re( )


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10


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11


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12

Vong Tron ang

( )l

2( ) ( ). dx l e =


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13

2 d

( )l

( )x


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14


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15


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16


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17


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18

2) ac Tnh

a) Bieu dien dan nap tren o th smith


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19

) p

1

1z

+ =

1

1

z

z

=

+

1

1 1

1 11

yy

y

y

= = ++

Quan he

gia vi z, giong quan he

gia vi y

y g jb= +

z r jx= +

ang b


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20

1y g jb

z= = +

ang g

b) iem bung song va

nut song tren o

th Smith

11

S + =Vong Tron ang


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21

1 Vong Tron angVong Tron ang S

iem nut song ap

minr

maxr

iem bung song ap

1) Tnh He Sophan Xa, Tr Khang ng Day,He So Song ng

III. ng Dung o Th Smith


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22

p g g yHe

So

Song ng

d

0R LZ

, Z

0

L

L L L

Z

z r jxR= = +

Lz

L L Lz r jx= +


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23

( )l

d

L

z

0.z Z z R =

maxdLz


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24

( )l

L

mind

maxVminV


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25


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26Ex. 35 p.104

2) Ve Vector ap va

dong tren o

th Smith

V V V+ = +


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27

(1 ).V

eV+

= +

Chuan hoa

theo vector V+

(1 ).I

eI+

=

Tng t

cho vector dong I

I+

(1 ).V

eV+

= +


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28

1

V

V+

maxV

minV

(1 ).I

eI+

=


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29

1

I

I+

maxI

minI


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30

3) Tnh Tr

Khang Mach Phc Hp

L


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31

C110p

R50

22.5nH

C212p

Z910 ( / )rad s=

1

1

0

1/1 2

RC

R j Cz j

R

+= =

50 ( )= 0chon : R

10.2 0.4RCy j= +

1 20.2 1

RC Cy j= +

C

2

2

0

0.2

0.6 ,1/

C

gj C

b yR

=

= =

L


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32

11 2RCz j=

A

B

1 2

0.2 0.95RC Cz j=

D

0. 10 25 ( )Z R z j = =

C1

10p

R50

L

22.5nH

C212p

E

0.2 0.5z j= 0

0.2

0.45 , L

r

j Lx z

R

=

= =

4) Phoi Hp Tr

Khang ng Truyen Song

( ) 2 21P

P P P P= =

t ti ti ti


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33

o Khi co phoi hp tr khang, toan bo cong suat t nguon se ca en tai tieu thu.o

Khi khong phoi hp tr

khang, cong suat phan xa

ve

co

the

lam hong nguon phat.o


khang, tieu hao tren ng day tang.o


khang, xuat hien cac iem bung song,

gay qua ap hoac qua dong

Pphan xa

a) Phoi hp tr

khang bang mach ien

thong so

tap trung

Machh i


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34

0R LZphoi

hp tr

khang1X

2X LZ0R

Mang 2 ca hnh

1X

2X LZ0R

Mang 2 ca hnh

1jx

VD: 90 50 ( ), 10 40 ( ) , 10 ( / )LR Z j rad s= = =


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35

1j

2

2

1jbjx

=

0

0.2 0.8LL

Zz jR

= =

Lz1

1

t L

t

t

z z jx

yz

= +

=

2

0 0

1

1/ 1

.

ty y jb

z y

Z R z R

= + = = =

= =

C

1 2ty j= +

2 2 2 2

2

2 , 1/ 0.525( )

b b jx jb xL nH

= = = = =Cam khang :


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36

0.2 0.8Lz j=

A

D

B

C

0.2 0.4tz j=

1

1

0.4 0

20( )

x x

L nH

= = >

=Cam khang :


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1jx

VD: 90 50 ( ), 10 40 ( ) , 10 ( / )LR Z j rad s= = =


126/277

38

2jb

0

0.2 0.8LL

Zz jR

= =

10.3 1.18

L

L

L

z

y jz

= = +

2

1

t L

t

t

y y jb

zy

= +

=

1

0 0

1

.

tz z jx

Z R z R

= + = = =


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D

1 1 55z j= +

2 2 2 2

2

1.64 , 1/ 0.6130.5( )

b b jx jb xL nH

= = = = =Cam khang : B

0.3 1.18Ly j= +


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40

0.2 0.8Lz j= A

C0.3 0.46ty j=

1 1.55tz j= +

1

1

1.55 0

13( )

x x

C pF

= =

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Ky Thuat Sieu Cao Tan (Slide GT Hay)