The RF Link Budget
 Share
The version of the browser you are using is no longer supported. Please upgrade to a supported browser.Dismiss

 
$
%
123
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
|
 
Still loading...
ABCDEFGHIJKLMNOPQRST
1
Link Budget
2
3
Note: independent variables are in bold
4
5
QuantityValueUnits
6
7
Super-CB Transmitter RF Specifications
8
Super-CB Transmit Power Spectral Density14.00dBm/MHz
9
Bandwidth20.00MHz
10
Transmit Power (dBm)27.01dBm
11
Transmit Antenna Gain3.00dB
12
EIRP30.01dBm
13
14
Super-CB Transmitter Encoder Specifications
15
Chip rate20Mcps
16
L8
17
Code Length255
18
Symbol rate / code0.07843137255Mbps
19
20
Super-CB Receiver RF Specifications
21
Receive Antenna Gain3.00dB
22
Noise Spectral Densitty-174dBm / Hz
23
Noise Bandwidth73.01dB Hz
24
Receiver Noise Level-100.99dBm
25
Receiver Noise Figure5.00dBm
26
27
Super-CB Receiver Decoder Specifications
28
Auto-correlation255not dB
29
Worst-case cross-correlation16not dB
30
Processing Gain over other codes12.02420198dB
31
Best case cross-correlation-1not dB
32
33
Required SNR post-spreading (BPSK @ 1% BER)4.00dB
34
Processing Gain over white noise24.07dB
35
Required SNR pre-spreading over white noise-20.0654018dB
36
37
Super-CB RF Propagation
38
Carrier frequency (use mid-point)0.50GHz
39
Wavelength (lambda)0.60m
40
1 meter Freq. Dependent loss26.42
41
Path Loss Exponent3
42
Distance of Transmitter from Reciever1000m
43
Path Loss of Transmitter116.4211723dB
44
Received signal power-86.41087232
45
46
Model of interferers or jammers
47
Interferers or Jammers per square km10/km^2
48
Interferers or Jammers per square meter0.00001/m^2
49
50
Pi4.971498727dB
51
Interferer or Jammer EIRP23dBm
52
Carrier frequency (use mid-point)0.50GHz
53
Wavelength (lambda)0.60m
54
1 meter Freq. Dependent loss26.42
55
Recieved Power at 1m-3.421172273dBm
56
Distance where we start integrating500m
57
Received power of one interferer at this distance-84.3902724dBm
58
Interferer or Jammer Duty Cycle-10dB
59
Recieved power of all interferers (see email)-82.43937359dBm
60
Distance of a single interferer equal to all interferers430.4671786m
61
62
Received signal at receiver (required for successful communication of each code)
63
Received Power-86.41087232dBm
64
Excess Link Margin over Noise (per code)33.64422953dB
65
Excess Link Margin over Interference (per code)8.052703251dB
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
Loading...
 
 
 
New Link Budget
Data Rate vs Distances