7/30/2019 Ejercicios Comunicaciones: Modulacin en Amplitud
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Qk`vars`mfm ]aokblj`of Kfo`bkfl Cfoultfm aj`bkfl Maltf
Obiuk`ofo`bkas
Akafs K+ Ibral Xj`kf 6
Xrfot`of S
Ibmulfo`k ak Fipl`tum+
6+ Qkf safl ibmulfmbrf c$t) sa fpl`of f uk ibmulfmbr ma FI s`k
pbrtfmbrf, quabparf f ukf craouako`f ma >88 Dz+ M`nuga lf
maks`mfm aspaotrfl ma lf safl maFI rasultfkta, `makt`c`ofkmb lfs
nfkmfs lftarflas supar`br a `kcar`br, pfrf lbs
s`ju`aktas ofsbs+
f+ obs 688c t t +
n+ 6 obs
>88>88
>
8
wt
C w w
oo
>+ _a masafk axfi`kfr lf craouako`f y lf cfsa ma uk bso`lfmbr
ma nfgf craouako`f obkraspaotb f uk sajukmb+ _a mao`ma iult`pl`ofr
lfs sfl`mfs ma lbs bso`lfmbras pfrf
dfoar lf obipfrfo`k+ _`k ainfrjb, obib rasultfmb ma lfs
m`c`oultfmas fl
obkstru`r al iult`pl`ofmbr ma nfgf craouako`f, sa al`ja ut`l`zfr
ibmulfmbras ma
FI obk pbrtfmbrf supr`i`mf y uk iult`pl`ofmbr pfsfnfkmf+
f+ Matari`ka lfs axpras`bkas pfrf lfs saflas ma FI+n+ Matari`ka
ukf axpras`k pfrf j$t)+o+ M`nuga lf ifjk`tum mal aspaotrb ma
j$t)+m+ Ak qu obkm`o`bkas j$t) raprasaktf al prbmuotb masafmb ma
lfs mbs saflas
ma aktrfmf2+
?+ Xfrf lf safl FI obk pbrtfmbrf ma lf c`jurf+f+ Akouaktra al
km`oa ma ibmulfo`k+
n+ Asor`nf ukf axpras`k pfrf lf safl+o+ M`nuga al aspaotrb ma
lkaf ma lf safl+m+ Maiuastra qua lf suif ma lfs mbs lkafs ma lfs
nfkmfs lftarflas, m`v`m`mfs pbr
lf lkaf ma lf pbrtfmbrf, prbpbro`bkf al km`oa ma ibmulfo`k+
a+ Matari`ka lf fipl`tum y lf cfsa ma lf pbrtfmbrf fm`o`bkfl qua
sa mana ffm`r flf safl ibstrfmf pfrf bntakar uk km`oa ma ibmulfo`k
ma >8!+
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Qk`vars`mfm ]aokblj`of Kfo`bkfl Cfoultfm aj`bkfl Maltf
Obiuk`ofo`bkas
Akafs K+ Ibral Xj`kf >
=+ Qk trfsi`sbr ma FI obk pbrtfmbrf, masfrrbllf ukf pbtako`f f
lf sfl`mf s`kibmulfr ma 6 Ew f trfvs ma ukf ras`stako`f ma 18 +
Oufkmb sa fpl`of uk tbkb
ma pruanf sakb`mfl obk fipl`tum p`ob ma 1 S f lf aktrfmf mal
ibmulfmbr, sa
akouaktrf qua lf lkaf aspaotrfl pfrf ofmf nfkmf lftarfl ak al
aspaotrb ma
ifjk`tum pfrf lf sfl`mf as al =8 ! ma lf pbrtfmbrf+ Matari`ka
lfs s`ju`aktas
ofkt`mfmas ak lf safl ma sfl`mf+
f+ Al km`oa ma ibmulfo`k+n+ Lf fipl`tum p`ob ma lf nfkmf lftarfl
`kcar`br+o+ Lf rfzk ma pbtako`f tbtfl ak lfs nfkmfs lftarflas f lf
pbtako`f ma pbrtfmbrf+m+ Lf pbtako`f tbtfl ma sfl`mf+a+ Lf pbtako`f
prbiam`b tbtfl ak lf sfl`mf s` lf fipl`tum ma p`ob ma lf
sakb`mfl
ma ibmulfo`k sa ramuoa f = S+
1+
M`nuga al aspaotrb tp`ob ma uk s`staif ma iult`plax`k pbr
m`v`s`k macraouako`f pfrf ofmf ukf ma lfs s`ju`aktas obin`kfo`bkas
y iako`bka fljukfs
vaktfgfs y masvaktfgfs ma ofmf s`staif+
f+ FIOp+n+ FI_p+
3+ Qk trfsi`sbr ma NLQ obk pbrtfmbrf, sa ibmulf obk lf aktrfmf
c$t) 9 obs$>888t)+Ak kbtfo`k ma vflbr obiplagb sa puama asor`n`r
f lf safl ma sfl`mf obib7
6 o
gw t
NLQ at ^ F ic t gic t a
f+ Avflu c t +n+ Oul as al ix`ib vflbr ma i s` sa ut`l`zf
mataotbr ma akvblvakta2+o+ Matari`ka al vflbr kuir`ob ma F y i s`
lf pbtako`f s`k ibmulfr f trfvs ma
uk ras`stbr ma 18 as ma 188 Z y sa akouaktrf qua lf pbtako`f
prbiam`b
fuiaktf 18 ! oufkmb sa fpl`of lf ibmulfo`k+
