Transcript 2PAD Analogue System - Square Kilometre Array

2PAD Analogue System
Tim Ikin
6th November 2009
SKADS - Limelette
Tim Ikin
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
6th November 2009
SKADS - Limelette
Tim Ikin
Front end system
6th November 2009
SKADS - Limelette
Tim Ikin
Analogue Transport
6th November 2009
SKADS - Limelette
Tim Ikin
SCM to DAQ
6th November 2009
SKADS - Limelette
Tim Ikin
Digital 10kW
Trans.Power (log)
Roughly 43km to 2PAD
850MHz
842MHz
63
64
65
690MHz
698MHz
706MHz
714MHz
722MHz
730MHz
738MHz
746MHz
754MHz
762MHz
770MHz
778MHz
786MHz
794MHz
802MHz
810MHz
818MHz
826MHz
834MHz
62
650MHz
682MHz
61
674MHz
60
666MHz
59
658MHz
58
642MHz
57
634MHz
56
626MHz
Local repeat 40W
1MW
68
67
55
Winter Hill Post-DSO
Roughly 43km to 2PAD
Digital 100kW
Trans.Power (log)
Local repeat 250W
Winter Hill Pre-DSO
66
54
47
53
46
52
45
51
44
50
42 43
49
41
48
40
41
42 43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
626MHz
634MHz
642MHz
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
650MHz
40
Tim Ikin
SKADS - Limelette
6th November 2009
Analogue 500kW
1MW
100kW
10kW
1kW
100kW
10kW
1kW
EMC
6th November 2009
SKADS - Limelette
Tim Ikin
Meeting power budget
SKA AA requirement 200mW max. in the analogue
front end, including LNA.
6th November 2009
SKADS - Limelette
Tim Ikin