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TFS840 Filter Specification
型号:   TFS840
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描述:   Filter Specification
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品牌   VECTRON [ Vectron International, Inc ]
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Tfs840.doc
version 1.2
02.09.2002
VI
TELEFILTER
Measurement condition
Ambient temperature:
Input power level:
Terminating impedances
23
0
°C
dBm
Filter Specification
TFS 840
1/5
for input: 195Ω // -0,25 pF
for input: 195Ω // -0,25 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 840 is the minimum of the pass band attenuation amin. The minimum of the pass band
attenuation amin is defined as the insertion loss ae. The centre frequency fc is the arithmetic mean value of the upper and lower frequencies at
the -3 dB filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed on 840,0 MHz without tolerance. The given
values for the relative attenuation arel and for the group delay ripple have to be reached at the frequencies given below also if the centre
frequency fc is shifted due to the temperature coefficient of frequency TCf in the operating temperature range and due to a production tolerance
for the centre frequency fc.
Data
Insertion loss
(Reference level)
Nominal frequency
Centre frequency
2 dB Bandwidth
Pass band ripple
ae = amin
fN
fc
typ. value
3,75
-
840,0
49,50
1,5*
-
50,0
dB
dB
dB
dB
min.
min.
min.
MHz
MHz
dB
dB
tolerance/limit
max.
5,5
840,0
dB
MHz
BW
within
±
20,0 MHz
min.
max.
max.
40,0
2,0
2,0
MHz
dB
dB
Relative attenuation
arel
MHz
f
N
.... f
N
±
20,0
f
N
- 160,0 MHz .... f
N
- 740,0
f
N
+ 120,0 MHz .... f
N
+ 260,0
f
N
+ 260,0 MHz .... f
N
+ 300,0
f
N
+ 300,0 MHz .... f
N
+ 660,0
Operating temperature range
Storage temperature range
*) 1,5 dB over
f
N
±
20 MHz at ambiente temperature (23 °C).
MHz
MHz 50,0
MHz 50,0
MHz 50,0
min.
40,0
dB
30,0
dB
45,0
dB
40,0
dB
- 25
°C
... + 75
°C
- 30 °C ... + 80 °C
Generated:
Checked / approved:
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
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