2PAD Analogue System

1
2PAD Analogue System

• Tim Ikin

2
Freq Balun LNA Filter Gain Gain chain cable splitter Signal Conditioning
500 -0.15dB 20.3dB -42.7dB 45.1dB 4.7dB
875 -0.42dB 18.8dB 17.2dB 39.5dB 2.76dB
3
Front end system
4
Analogue Transport
5
SCM to DAQ
6
Analogue 500kW
Digital 10kW
Trans.Power (log)
Winter Hill Pre-DSO Roughly 43km to 2PAD
Local repeat 250W
1MW
100kW
10kW
1kW
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
43
44
45
46
47
40
41
42
626MHz
634MHz
642MHz
650MHz
658MHz
666MHz
674MHz
682MHz
690MHz
698MHz
706MHz
714MHz
722MHz
730MHz
738MHz
746MHz
754MHz
762MHz
770MHz
778MHz
786MHz
794MHz
802MHz
810MHz
818MHz
826MHz
834MHz
842MHz
850MHz
Trans.Power (log)
Winter Hill Post-DSO Roughly 43km to 2PAD
Digital 100kW
Local repeat 40W
1MW
100kW
10kW
1kW
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
43
44
45
46
47
40
41
42
626MHz
634MHz
642MHz
650MHz
658MHz
666MHz
674MHz
682MHz
690MHz
698MHz
706MHz
714MHz
722MHz
730MHz
738MHz
746MHz
754MHz
762MHz
770MHz
778MHz
786MHz
794MHz
802MHz
810MHz
818MHz
826MHz
834MHz
842MHz
850MHz
7
EMC
8
Meeting power budget

• SKA AA requirement 200mW max. in the analogue
  front end, including LNA.