Version 2.0
06.01.02
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tfs341b.doc
VI TELEFILTER
Filiter specification
TFS 341 B
1/4
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Measurement condition
Ambient temperature:
Input power level:
Q-value of matching coils:
terminating impedances
Source:
Load:
25
±
5
5
±
2
25
°C
dBm
630
Ω
|| -5.2 pF
620
Ω
|| -5.0 pF
Construction and pin connection
see page 2
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 341 B 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 fo is the arithmetic mean value of the upper and lower frequencies at the
2 dB filter attenuation level relative to the insertion loss ae. 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 fo 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 fo.
Data
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7,5 dB
±
1 dB
ae = amin
Insertion loss
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-
341,0 MHz
Nominal frequency
fN
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Relative attenuation
f
N
............................. f
N
±
kHz ... f
N
±
f
N
± 100
f
N
f
N
f
N
f
N
f
N
f
N
arel
typ. value
limit
100
200
kHz
kHz
-
-
max.
max.
0,5 dB
0,8 dB
± 600
kHz ... f
N
±
1,8 MHz
-
min.
2,0 dB
±
1,8 MHz ... f
N
±
2,0 MHz
-
min. 30
dB
±
2,0 MHz ... f
N
±
2,4 MHz
-
min. 30
dB
±
2,4 MHz ... f
N
±
4,1 MHz
-
min. 30
dB
±
4,1 MHz ... f
N
±
4,5 MHz
-
min. 30
dB
±
4,5 MHz ... f
N
± 170
MHz
-
min. 30
dB
1000
MHz ...
1050
MHz
-
min. 35
dB
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VSWR ratio
-
max.
2:1
at source and load impedance,f
N
- 200 kHz ... f
N
+ 200 kHz
at 50
Ω,
at f
N
<=14
2)
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Group delay ripple
GD
f
N
- 200 kHz ... f
N
+ 200 kHz
-
max. 50
ns
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Input power level
-
max. + 10
dBm
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Permissible DC voltage
-
max. 10
V
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Operating temperature range
0
°C
... + 85
°C
Storage temperature range
- 30
°C
... + 85
°C
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- 0,036 ppm/K²
1)
TC
Temperature coefficient
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40
°C
-
Frequency inversion temperature
To
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Note 1) -
∆f
(Hz) = TC (ppm/K²) x (T - To)² x F
To
(MHz)
Note 2) Design goal is VSWR
50
Ω
=8; limit is VSWR
50
Ω
= 14 (typical value)
Generated:
Checked / approved:
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VI TELEFILTER
Vectron International, Inc.
Potsdamer Straße 18
267 Lowell Road
D 14 513 TELTOW / Germany
Hudson, NH 03051 / USA
Tel: (+49) 3328 4784-52 / Fax: (+49) 3328 4784-30
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: tft@telefilter.com
E-Mail: vti@vtinh.com
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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.
VECTRON [ Vectron International, Inc ]
