2) Find the first 4 modes of cut off frequency for the wave guide WR187.With the help of table given below.

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TABLE 7.1 Some Standard Rectangular Waveguides
Waveguide
designation
a (in)
b (in)
t (in)
fe, (GHz) Frequency range (GHz)
10
WR975
9.750
4.875
0.125
0.605
0.75-1.12
WR650
6.500
3.250
0.080
0.908
1.12–1.70
WR430
4.300
2.150
0.080
1.375
1.70-2.60
WR284
2.840
1.340
0.080
2.08
2.60–3.95
WR187
1.872
0.872
0.064
3.16
3.95-5.85
WR137
1.372
0.622
0.064
4.29
5.85-8.20
WR90
0.900
0.450
0.050
6.56
8.2–12.4
WR62
0.622
0.311
0.040
9.49
12.4–18
Transcribed Image Text:TABLE 7.1 Some Standard Rectangular Waveguides Waveguide designation a (in) b (in) t (in) fe, (GHz) Frequency range (GHz) 10 WR975 9.750 4.875 0.125 0.605 0.75-1.12 WR650 6.500 3.250 0.080 0.908 1.12–1.70 WR430 4.300 2.150 0.080 1.375 1.70-2.60 WR284 2.840 1.340 0.080 2.08 2.60–3.95 WR187 1.872 0.872 0.064 3.16 3.95-5.85 WR137 1.372 0.622 0.064 4.29 5.85-8.20 WR90 0.900 0.450 0.050 6.56 8.2–12.4 WR62 0.622 0.311 0.040 9.49 12.4–18
2) Find the first 4 modes of cut off frequency for the wave guide WR187.With the help of table given
below.
Transcribed Image Text:2) Find the first 4 modes of cut off frequency for the wave guide WR187.With the help of table given below.
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