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Problemas Capitulo 17 tomassi
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N (dBm)= -174 dBm + 10 log (30 x 106)
N=-99,22 dBm
Lp(dB)=92.4+20log(3.4)+20log(20)
Lp(dB)=129.05 dB
Fm=30log(60)+10log((6)x(4)x(0.125)x(6))-10log(1-0.9995)-70
Fm=28.90dB
N=1.38x10-23 x 563.15 x 20x106
N=1.55x10-13 W
N=-128 dBW
C mínima= 30dB + (-115dBm)
C mínima=-85dBm
Pt=120dB+ (-85dBm)
Pt=35dBm
L=10log (1-0,9998)
L=-36.98 dB
L=10log ((6) x (0.25) x (0.125) x (4))
L= -1.249dB
Fm= 30log(50)+10log((6) x (1) x (0.125) x (7.4)) - 10log (1-0.99999) -70
Fm= 38.412 dB
At=Ar=49.8dB
Lp= 92.4 + 20log (7.4) + 20log (50)
Lp = 143.76dB
Lf= 4.7 x 2 (150m +50m)
Lf=9.4
Lb= 3+3 =6dB
B (ancho de banda) = 8284 kHz-564kHz= 7720kHz
N= -174 dBm + 10 log (7720 x 103)
N= -105.12dBm
C mínima = 30dB + (-105.12)
C mínima = -75.12dBm
Gs= 38.412 + 143.76 + 9.4 + 6 – 49.8 -49.8
Gs= 97.972 dB
Pt=97.972 + (-75.12)
Pt=22.85 dBm
NFT= 4 + [(4-1)/10] + [(10-1) / (10x10)] + [(4-1) / (10x10x0.25)]
NFT=4.51
NFT=6.54dB
C mínima/N = 20dB + 4dB
C mínima/N= 24dB
C mínima= 24dB + (-102dBm)
C mínima= -78 dBm