19=6 Ee - ECED Mansoura · G 14. Comptete the following link budget: UP-LINK PARAMETERS t. Earth...
18
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Transcript of 19=6 Ee - ECED Mansoura · G 14. Comptete the following link budget: UP-LINK PARAMETERS t. Earth...
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complete the link budget for 1 satetlil.l -system
with the following
pa-rameters.
uP-lint<
1.
2.3.4.
Earth station transmitter output power at
Earth station back-off loss
Earth Station branching and feeder losses
Earth station transmit antenna gain(from.Figure 10.19, 15 m at L4 GHz,)
Additional up-link atmospheric losses
Free-space path loss
33 dBW v"3dB /4dts u
64 dB0.6 dB /
t,'
v0dB120 Mbps8 PSK
t0 dBw0.1 dB0.5 dB
30.8 dB0.4 dB -t;Jl.--, a 7?
205.6 dB E-/;t D.L i
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tEr l rr\ u'L' -tJ
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5.
6
)3.4.
:) at 14 Ghz)
7. Satetlite riceiver G/T" ratia8. Sateltite krranctrirtg and feed,er losses
9. Bit rate10. Modulation sclteme
Down-link1. Satellite transmitter outptrt porYer
at saturation 10 WSatellite back-off Ioss
Satellite branching and feecler losses
Satellite transmit antenna gain(from Figure 10.[9, 0.37 rn at 12 GHz)
5. Additional dor+'nlink atrnospheric losses
6. Free-space path loss
, at2'). Ghz)7. Earth station receivc antenna gain
(15 m, 12 Ghz)8. Earth station branching and feeder-losses
9. Earth station eqtrivalent noise ternperature10. Earth. station G/Tn ratio11. Bit rate12.Modulation schertre
v,tote- 1* fb-* D.L.+ u.r, -r,* (r, *Esl
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15
20
25
30
35.
40
70
65
60
55
50 ;45E
o!E
Icg.,gU
45
50
55
60
65
70
75
80
85
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G14. Comptete the following link budget:
UP-LINK PARAMETERS
t. Earth station transmitter output power at saturation, 1 kW2. Earth station back-olT loss, 3 dB.3. Earth station total branching and feeder losses, 3 dB4. Earth station transmit antenna gain for a 10-m parabolic dish at 14
GHz5. Free-space path loss for 14 GHz6. Additional up-link losses due to the earth's atmosphere, 0.8 dB7. Satellite transponder G/T", -4.6 dBK8. Transmission bit rate, 90 Mtrps, I PSK
DO'W.LTNK PARAMETERq1. Satcllite transmitter output power at serturation, l0 W2. Satellite transmit :rntenna gaiu for a 0.5-m parabolic dish at 12 GHz3. Satellite rnodulation track-off loss, 0.8 dB4. Free-space path loss for 12 Gl[r5. Additional down-link losses due to enrth's atmosphere, 0.6 dB6. Earth station receive antcnna gain for a I0-rn parabolic dish at 12
GHz7. Earth station equivalent noise tenrperature, 200 K8. liarth statiom ]-rranehing and fi:eiler fiosses. 0 rtl]9. Transmissiocr bit rate, 90 ivli:ps, I tr'SK
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