
EBK THE ANALYSIS AND DESIGN OF LINEAR C
8th Edition
ISBN: 9781119228226
Author: Toussaint
Publisher: YUZU
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DUC
1. Is the waveform on VT out terminal an ASK modulated signal?
TS
PROD
2. Is the waveform on VT out terminal an OOK modulated signal?
ASK Modulator/Demodulator
U1
VD Signal in
VT out
X1
W
R1
VC Carrier in
w
x2
100K
3
Y1
4
Y2 AD633 Z
VR1
10K
VR1
Multiplier(1)
I
U2
Vx out
X1
W
R3
2
w
x2
In2
100K
3
۲۱
I
Y2 AD633
Z
VR2
R2
10K
C4
100K
VR2
Multiplier(2)
+5V
200p
R5
R6
R101K
ww w
2.7K
22K
1N4148
D1
559
VE out
D+
In(ac)
6 0H
200p
HH
6
VLP out
Vo out
U3
VR
0.01
0.1u
R8
VR3
ww
50K
Envelope Detector
10K
U3
LF356
VR3
LPF
U4Σ
LM311
Comparator
U5
PLL in CS
HH
14 SIGN IN
PC1OUT 2
0.1u
6 CIA
PULSES
PHASE(2)
COMPARATOR
OUT 13
C10
HT
150p R16
ww
R12
VSO
18K
C6
200p
VCO OUT 4
IK
in
R14
C9
10 O
w
H
VLO out
6
7 Cle
15K
VCO
150p
06
11 R1
CD4046
VCO IN 9
VR5
1K
12 R2
0.0047u
C7
I
Demod
C8 out
10
SOURCE
FOLLOWER
R11
100K
INH
COMP IN
5
3
VR4
+5V+12V GND-12V
о
HTO
0.1u
R13
10K
I
PL
Figure 18-10 KL-94005 module
VR5
R15
U6Σ
OP37
BPF
h
e
6. Discuss the relationship between Vx out and VLP out signals.
7. Describe the function of comparator.
ASK Modulator/Demodulator
U1
VD Signal in
VT out
X1
W
R1
VC Carrier in
w
x2
100K
3
Y1
4
Y2 AD633 Z
VR1
10K
VR1
Multiplier(1)
I
U2
Vx out
X1
W
R3
2
w
x2
In2
100K
3
۲۱
I
Y2 AD633
Z
VR2
R2
10K
C4
100K
VR2
Multiplier(2)
+5V
200p
R5
R6
R101K
ww w
2.7K
22K
1N4148
D1
559
VE out
D+
In(ac)
6 0H
200p
HH
6
VLP out
Vo out
U3
VR
0.01
0.1u
R8
VR3
ww
50K
Envelope Detector
10K
U3
LF356
VR3
LPF
U4Σ
LM311
Comparator
U5
PLL in CS
HH
14 SIGN IN
0.1u
6 CIA
PC1OUT 2
PULSES
PHASE(2)
COMPARATOR OUT 13.
C10
HT
150p R16
ww
R12
VSO
C6
200p
VCO OUT 4
IK
in
R14
C9
18K
10 O
w
7 Cle
H
VLO out
6
15K
VCO
150p
06
11 R1
CD4046
VCO IN 9
VR5
1K
12 R2
0.0047u
C7
I
Demod
C8 out
10
SOURCE
FOLLOWER
R11
100K
INH
COMP IN
5
3
VR4
+5V+12V GND-12V
о
HTO
0.1u
R13
10K
I
PL
VR5
Figure 18-10 KL-94005 module
R15
U6Σ
OP37
BPF
Choose one of the choices indicated in the parentheses such as the following sentences have correct
messing
What is the main purpose of a communication system? a) To transmit information from one point
to another b) To amplify signals for better reception c) To filter out unwanted noise dy To generate
carrier waves for modulation
2. What the purpose of the modulator in a communication system? a) To generate the cares wave
for modulation b) To convert the information signal to a modulated signal c) To filter out unwanted
noise d) To amplify the modulated signal for transmission
Which component in an FM transmitter is responsible for generating the carrier signal? a) Mixer b)
Modulator c) Demodulator d) Oscillator
4 For a FM signal v(t) 25 cos (15
deviation
10
(3456 4 24669, 7321 7.21284) 117
10 sm 15501). Maximum frequency
5. In an AM receiver, which component is responsible for separating the modulating signal from the
received AM signal? a) Mixer b) Modulator c) Demodulator dy…
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