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7.7.2. The receive level and the distance
In a point-to-point system, the receiving level at clear sky and the distance are related as shown in
Figure 7-41.
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
Transmission level (QPSK)
Frequency
Antenna gain[TX+RX]
TX WT Antenna Gain:31dBiTYP
RX WT Antenna Gain:31dBi
Maximum receiving level
Minimum receiving level
1
10
Figure 7-41 Receiving Level and Distance (QPSK)
14 [dBm]
26 [GHｚ]
62 [dBi]
TYP
Receiving level
100
1000
Distance[m]
Free space loss Lp[dB]
λ
m
Lp
7-134
10000
c
m
f
Hz
π d
4
20
log
λ
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