001 introduccion a los sistemas de telecomunicacion_18-35

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18 8. Ancho de banda 2 =f 2 – f 1 = Ancho de banda de un canal . bandas laterales, ancho de banda de un canal Click here to buy A B B Y Y P D F T r a n s f o r m e r 3 . 0 w w w . A B B Y Y . c o m Click here to buy A B B Y Y P D F T r a n s f o r m e r 3 . 0 w w w . A B B Y Y . c o m

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18

8. Ancho de banda

2

=f2 – f1 =

Ancho de banda de un canal

.

bandas laterales,

ancho de banda de un canal

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La necesidad de las altas frecuencias

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20

Análisis en el dominio del tiempo y en dominio de la frecuencia

dominio del tiempo frecuencia.

armónica

4. 1 1 1( ) sin sin 3 sin 5 sin 7 ...3 5 7

Vf t t t t t

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4.( ) sinVf t t

4. 1( ) sin sin 33

Vf t t t

4. 1 1( ) sin sin 3 sin 53 5

Vf t t t t

4. 1 1 1( ) sin sin 3 sin 5 sin 73 5 7

Vf t t t t t

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9. Administración del espectro electromagnético

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26

10. La unidad de los sistemas de comunicaciones: El dB

10.log OUT

IN

PdBP

2

2

( )10.log 10.log 20.log 10.log( )

OUT OUT OUT OUT IN

IN IN IN IN OUT

P V R V RdBP V R V R

20.log OUT

IN

VdBV

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27

Antilogaritmos

antilogaritmo.

10.log log log10 10

OUT OUT OUT

IN IN IN

P P PdB dBdB antiP P P

20.log log log20 20

OUT OUT OUT

IN IN IN

V V VdB dBdB antiV V V

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28

µ

Valores absolutos

dBm

10.log1

OUTPdBmmW

dBW

10.log1OUTPdBWW

dBµV

20.log1

VdB VV

dBmV

20.log1

VdBmVmV

µ

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P

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11. Preguntas de repaso

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32

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33

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