Filtered 2M Attenuation Characteristics
Note: Below are typical capacitance values. Other capacitance values are available. Please consult Amphenol Aerospace for availability.
TYPICAL INSERTION LOSS
UHF-2 UHF-1
VHF-1
MF-1 HF-1
VHF-2
100
80
All performance between 1000 and 10,000 is greater than 60 dB. Measurements were greater than equipment sensitivity (60 dB).
60
40
20
0
.15
.5
1
3
10
30
100
300
1000
FREQUENCY MHz
Most filter attenuation curves and capacitance values are expressed at 25°C. However, temperature can affect the capacitance of a barium titanate filter element, affecting the insertion loss that the element will cause. In order to assist the user in anticipating the effect of various temperatures, the following charts applicable to Amphenol filter connectors utilizing VHF-1, VHF-2, UHF-1 and UHF-2 filters are provided. Please note that all insertion loss (attenuation) values given were measured with no load applied. The band designations refer to MIL-STD-2120.
TYPICAL INSERTION LOSS (dB) PER MIL-STD-220, 5 ADC, 25°C Capacitance 1MHz 3MHz 10MHz 30MHz 100MHz 300MHz 1000MHz 375 pf UHF 1 0 0 1 8 16 – – 750 pf UHF 2 0 0 3 10 19 – – 2500 pf VHF 2 0 2 8 20 28 – – 7000 pf VHF 1 5 9 17 23 40 – –
VHF-1 Typical Capacitance = 7,000 pf Min. 4,900 pf Max. 12,000 pf Band G, Type Pi
VHF-2 Typical Capacitance = 2,500 pf Min. 1,900 pf Max. 4,000 pf Band E, Type Pi
Temp.
F CO
1MHz 3MHz 10MHz 30MHz 100MHz 300MHz 1000MHz
Temp.
F CO
1MHz 3MHz 10MHz 30MHz 100MHz 300MHz 1000MHz
–55°C –
1 2 8 21 44 61
65 75 64
–55°C –
0 2 7 17 40 58
71
Room 1.27M 1 6 18 42 62 72
Room 3.3M 0 2 8 24 46 61
71
+125°C –
0 2 9 24 45 62
+125°C –
031026 46 63
69
Note: F
= Cut-off Frequency
CO
UHF-2 Typical Capacitance = 750 pf Min. 500 pf Max. 1,100 pf Band C, Type Pi
UHF-1 Typical Capacitance = 375 pf Min. 290 pf Max. 450 pf Band B, Type Pi
Temp.
F CO
1MHz 3MHz 10MHz 30MHz 100MHz 300MHz 1000MHz
Temp.
F CO
1MHz 3MHz 10MHz 30MHz 100MHz 300MHz 1000MHz
–55°C –
0 0 3 9 25 46
61 61 60
–55°C –
0 0 1 6 21 43
58
Room 12.7M 0 0 3 10 28 46
+125°C –
0 0 3 10 24 42
Room 21.9M 0 0 1 8 18 42
56
+125°C –
0 0 1 8 17 38
50
Please consult the Amphenol Circular Interconnects catalog 12-C Edition 4 for full Amphenol EMI/EMP Filter Protection information.
EC H 100
Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com
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