lkatelC.musaviaya.aC.In
Diocle modalen
MODULA ToR -
|.3: SWITCHING AM- &igna.
9eneTate
cîrcuit Used to clreutt dfaqra
a piode Modulator hits
operahon of Swihiog Dç Jan2o1?
Explain te
and wavef osms
u3ed generuk AM Bigna.
Sischng Modulador i8
Cizcuit diaqrd
BPF
D
C(t)
Idea
díode
mt) () V,()
(a)
Sfope1
+1
4 To
(b)
(c)
Frgust 1.3: () Swithiog Modulodox cireuft diaq ran
(6) Idealized fonput (yct) and output V,ct) relation Diede
(c) periodic pulßetrain c)
Explanotion Sitching morulatos onail, of an JdeaJ díode
whtch is Used as a ^witch, followed ty Bars pY FiltercBPFJ
-duned to f'equeoy fo 8 hown o) fiqyoe 1.3 (^).
L> MesBge Signa nct) and Carie} kigna c+) are SimulBane
-oUsly applied as input signa! f fded diode 'D', as sho
tigur 1.3(a).
LVen kate&ha-M, ASsocia pofesßog Dept c ECE SVIT
, ZliRateSNa:A(UsAvayaraGt
": he toteJ inyput yt) do the diode is given by
A
V+)= m(t) t C )
Mct) = mt) +ACosaRft (1)
I 18 asBUmed that |m)k An .hetefoor ON 2oFF of Diode D otolk
by cct).
he output oltag of Diode 'D' (8,
V,+) 3 When c+) >0 ’shown o igur1-36)
When C¢)<o
t-e, The output volteg
te dioce Varí es between o and vt
at a ra equa o Carrie Biqna) peTiod T6=
The Diode output Voltage yi+) depend on the Cortrl
igna
aott) as 8hown 4gut 13 cc).
Herns of periodic pusetrain pt), the outpu VolBeg of The
dio de Cas be Wi He) a8
VyH)= V) ,t)2)
Sub&itut sqyuation () fn equntien (2) we gt,
Vs+)=[m+) + Açcos&n tt pt)
Repre Zudng ptt) by i Fouries >(3)
Series,
tptt)= t Cossn ft t
Vg(+) = m) t Ac os
IRPett cosQrfett
4
y)= m) +m) Cos anfedt
Cosanft+ As +A CoS 4ntt
T5e equired AM Wave (Dc)
Centred a i8 obteined by
6)
paszing (+) through
through on idead BPF havng Grtes fregunny
and BW Qn H2
Diocle modalen
MODULA ToR -
|.3: SWITCHING AM- &igna.
9eneTate
cîrcuit Used to clreutt dfaqra
a piode Modulator hits
operahon of Swihiog Dç Jan2o1?
Explain te
and wavef osms
u3ed generuk AM Bigna.
Sischng Modulador i8
Cizcuit diaqrd
BPF
D
C(t)
Idea
díode
mt) () V,()
(a)
Sfope1
+1
4 To
(b)
(c)
Frgust 1.3: () Swithiog Modulodox cireuft diaq ran
(6) Idealized fonput (yct) and output V,ct) relation Diede
(c) periodic pulßetrain c)
Explanotion Sitching morulatos onail, of an JdeaJ díode
whtch is Used as a ^witch, followed ty Bars pY FiltercBPFJ
-duned to f'equeoy fo 8 hown o) fiqyoe 1.3 (^).
L> MesBge Signa nct) and Carie} kigna c+) are SimulBane
-oUsly applied as input signa! f fded diode 'D', as sho
tigur 1.3(a).
LVen kate&ha-M, ASsocia pofesßog Dept c ECE SVIT
, ZliRateSNa:A(UsAvayaraGt
": he toteJ inyput yt) do the diode is given by
A
V+)= m(t) t C )
Mct) = mt) +ACosaRft (1)
I 18 asBUmed that |m)k An .hetefoor ON 2oFF of Diode D otolk
by cct).
he output oltag of Diode 'D' (8,
V,+) 3 When c+) >0 ’shown o igur1-36)
When C¢)<o
t-e, The output volteg
te dioce Varí es between o and vt
at a ra equa o Carrie Biqna) peTiod T6=
The Diode output Voltage yi+) depend on the Cortrl
igna
aott) as 8hown 4gut 13 cc).
Herns of periodic pusetrain pt), the outpu VolBeg of The
dio de Cas be Wi He) a8
VyH)= V) ,t)2)
Sub&itut sqyuation () fn equntien (2) we gt,
Vs+)=[m+) + Açcos&n tt pt)
Repre Zudng ptt) by i Fouries >(3)
Series,
tptt)= t Cossn ft t
Vg(+) = m) t Ac os
IRPett cosQrfett
4
y)= m) +m) Cos anfedt
Cosanft+ As +A CoS 4ntt
T5e equired AM Wave (Dc)
Centred a i8 obteined by
6)
paszing (+) through
through on idead BPF havng Grtes fregunny
and BW Qn H2
