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FB404

更新时间： 2024-11-24 06:58:47
品牌 Logo 应用领域
智原科技 - FARADAY LTE
页数 文件大小 规格书
2页 90K
描述
SATELLITE IF CHANNEL FILTERS

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FB404 数据手册

 浏览型号FB404的Datasheet PDF文件第2页 
SATELLITE IF CHANNEL FILTERSꢀ  
Features  
• Tight amplitude and group delay specifications  
• Consistent 6 dB Insertion Loss across range  
• Impedance: 75 W  
• Geometrically symmetric response  
• Remote filter identification  
• Passband return loss: > 15 dB  
A range of bandpass filters for use in 70 MHz I.F. stages of satellite links. Designed to meet the  
tight amplitude and group delay characteristics necessary for close channel separation as specified  
in the Eutelsat, Intelsat, Arabsat and Astra templates. A particular feature is the passive logic array  
which can be interrogated electronically to detect the presence and type of filter. Other templates  
and different I.F. frequencies considered on request.  
Table 1 – Amplitude  
See over  
A/3  
A
B
C
D
a
b
c
d
e
MHz  
MHz  
MHz  
MHz  
MHz  
dB  
0.6  
0.3  
0.3  
0.3  
0.5  
0.6  
0.2  
dB  
2.5  
3.0  
2.5  
2.5  
2.5  
2.5  
2.2  
dB  
10.0  
7.0  
6.5  
7.5  
----  
10.0  
8.3  
dB  
25  
25  
25  
25  
----  
25  
25  
dB  
0.3  
0.1  
0.1  
0.1  
0.3  
0.3  
0.0  
FB282 – Eutelsat Full Transponder  
FB281 – Eutelsat Half Transponder  
FB296 – Intelsat 17.5 MHz Carrier  
FB295 – Intelsat 20 MHz Carrier  
FB294 – Intelsat 30 MHz Carrier  
FB552 – Arabsat 32 MHz Carrier  
FB404 – Astra  
9.6  
8.0  
4.2  
4.8  
8.0  
8.6  
6.7  
28.8  
24.0  
12.6  
14.4  
24.0  
25.8  
20.2  
36.0  
30.0  
15.75  
18.0  
30.0  
32.0  
25.2  
45.5  
35.0  
18.0  
20.5  
----  
60.0  
50.0  
26.5  
28.0  
----  
37.0  
28.9  
54.0  
40.0  
Table 2 – Group delay  
A/3  
A
H
f
g
h
See over  
MHz  
9.6  
8.0  
4.2  
4.8  
8.0  
8.6  
6.7  
MHz  
28.8  
24.0  
12.6  
14.4  
24.0  
25.8  
20.2  
MHz  
33.1  
30.0  
14.2  
16.6  
30.0  
32.0  
24.6  
ns  
3
4
6
4
5
2
2
ns  
5
6
6
5
5
3
3
ns  
15  
15  
15  
15  
15  
12  
12  
FB282 – Eutelsat Full Transponder  
FB281 – Eutelsat Half Transponder  
FB296 – Intelsat 17.5 MHz Carrier  
FB295 – Intelsat 20 MHz Carrier  
FB294 – Intelsat 30 MHz Carrier  
FB552 – Arabsat 32 MHz Carrier  
FB404 – Astra  
Filter Type  
Pins 17 18 19 20  
A particular feature is the passive logic array  
which can be interrogated electronically to  
detect the filter type (see table opposite).  
Pins 21 and 22 are linked internally and can  
be used to determine if a filter is present in its  
mounting slot. Pin 16 is connected to a  
voltage representing logic 1 and pins 17 to 20  
are either connected to this or ground.  
FB281  
FB282  
FB294  
0
0
0
0
0
0
0
1
1
1
0
1
FB295  
FB296  
FB404  
FB552  
0
0
0
1
1
1
1
0
0
0
1
1
0
1
0
0
© Faraday Technology. As part of continual product improvement the specifications, details and dimensions shown in this publication are subject to change without notice  
Fara102 Page 1 of 2 May-99(A)  
12

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