An FM modulator that expressed as: SEM = 50 cos [2n 10®t + 2n x 12 × 103 5cos(20000nt dt)] 1) Calculate the frequency deviation (Af), the modulation index B, specify the type of this FM signal, and evaluate the bandwidth using Carson's rule.
An FM modulator that expressed as: SEM = 50 cos [2n 10®t + 2n x 12 × 103 5cos(20000nt dt)] 1) Calculate the frequency deviation (Af), the modulation index B, specify the type of this FM signal, and evaluate the bandwidth using Carson's rule.
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![An FM modulator that expressed as:
SEM = 50 cos [2n 10®t + 2n × 12 × 103
5cos(20000nt dt)]
1) Calculate the frequency deviation (Af), the modulation index B, specify the
type of this FM signal, and evaluate the bandwidth using Carson's rule.
2) Using the attached Bessel function table, determine the amplitude and
frequency of all signal components that have a power level of at least 80%
of the unmodulated carrier power and draw clearly the spectrum of these
selected components.
3) Compare between AM and FM modulations taking into account the
difference between them in the aspects of noise and interference of the
adjacent channels effects, bandwidth, the range of frequencies, the coverage
area, and the signal quality.
(1)"r
J„(2)
0.7652
J(3)
J.(4)
J(5)
J(6)
JK7)
J(8)
J(9)
J(10)
0.2239
-0.2601
-0.3971
-0.1776
0.1506
0.3001
0.1717
-0.0903
-0.2459
1
0.4401
0.5767
0.3391
-0.0660
-0.3276
-0.2767
-0.0047
0.2346
0.2453
0.0435
0.1149
0.3528
0.4861
0.3641
0.0466
-0.2429
-0.3014
-0.1130
0.1448
0.2546
3
0.0196
0.1289
0.3091
0.4302
0.3648
0.1148
-0.1676
-0.2911
-0.1809
0.0584
0.0340
0.1320
0.2811
0.3912
0.3567
0.1578
--0,1054
-0.2655
-0.2196
0.0430
0.1321
0.2611
0.3621
0.3479
0.1858
-0.0550
-0.2341
6
0.0114
0.0491
0.1310
0.2458
0.3392
0.3376
0.2043
-0.0145
7
0.0152
0.0534
0.1296
0.2336
0.3206
0.3275
0.2167
8
0.0184
0.0565
0.1280
0.2235
0.3051
0.3179
9.
0.0212
0.0589
0.1263
0.2149
0.2919
10
0.0235
0.0608
0.1247
0.2075
11
0.0256
0.0622
0.1231
12
0.0274
0.0634
13
0.0108
0.0290
14
0.0119](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2cf2c6bd-2da1-43bd-8c78-076827692e72%2Fd341971d-2267-4a65-9695-3fdd2451a834%2F6reiiuh_processed.jpeg&w=3840&q=75)
Transcribed Image Text:An FM modulator that expressed as:
SEM = 50 cos [2n 10®t + 2n × 12 × 103
5cos(20000nt dt)]
1) Calculate the frequency deviation (Af), the modulation index B, specify the
type of this FM signal, and evaluate the bandwidth using Carson's rule.
2) Using the attached Bessel function table, determine the amplitude and
frequency of all signal components that have a power level of at least 80%
of the unmodulated carrier power and draw clearly the spectrum of these
selected components.
3) Compare between AM and FM modulations taking into account the
difference between them in the aspects of noise and interference of the
adjacent channels effects, bandwidth, the range of frequencies, the coverage
area, and the signal quality.
(1)"r
J„(2)
0.7652
J(3)
J.(4)
J(5)
J(6)
JK7)
J(8)
J(9)
J(10)
0.2239
-0.2601
-0.3971
-0.1776
0.1506
0.3001
0.1717
-0.0903
-0.2459
1
0.4401
0.5767
0.3391
-0.0660
-0.3276
-0.2767
-0.0047
0.2346
0.2453
0.0435
0.1149
0.3528
0.4861
0.3641
0.0466
-0.2429
-0.3014
-0.1130
0.1448
0.2546
3
0.0196
0.1289
0.3091
0.4302
0.3648
0.1148
-0.1676
-0.2911
-0.1809
0.0584
0.0340
0.1320
0.2811
0.3912
0.3567
0.1578
--0,1054
-0.2655
-0.2196
0.0430
0.1321
0.2611
0.3621
0.3479
0.1858
-0.0550
-0.2341
6
0.0114
0.0491
0.1310
0.2458
0.3392
0.3376
0.2043
-0.0145
7
0.0152
0.0534
0.1296
0.2336
0.3206
0.3275
0.2167
8
0.0184
0.0565
0.1280
0.2235
0.3051
0.3179
9.
0.0212
0.0589
0.1263
0.2149
0.2919
10
0.0235
0.0608
0.1247
0.2075
11
0.0256
0.0622
0.1231
12
0.0274
0.0634
13
0.0108
0.0290
14
0.0119
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