TFS121B Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 121b.doc
VI TELEFILTER
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance:
Input:
Output:
Version 1.5
Filter specification
23
°C
0
dBm
50 Ω
50 Ω
TFS 121B
21.02.2006
1/5
Characteristics
Remark:
The reference level for the relative attenuation arel of the TFS 121B 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 dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 121,5 MHz without any tolerance. The given values for both the
relative attenuation arel and the group delay ripple have to be achieved at the frequencies given below even 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
ae
(reference level)
Nominal frequency
f_N
Passband
PB
Pass band ripple
Bandwidth
BW
1 dB
3 dB
Relative attenuation
f_N ±
f_N ±
f±
N
f±
N
2,20
3,00
5,00
8,00
MHz … f_N ±
MHz … f_N ±
MHz … f ±
N
MHz … f ±
N
Input power level
3,00
5,00
8,00
20,00
arel
MHz
MHz
MHz
MHz
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
*) ∆f(Hz) = TCf(ppm/K) x (T-T₀) x fcat(MHz).
OTR
TCf *
typ. value
1,25 dB
-
-
-
2,8 MHz
22
dB
35
dB
53
dB
-
-
-
-32
ppm/K
tolerance / limit
max.
2,5 dB
121,5
f ± 25
N
max.
±0,5
MHz
kHz
dB
min. ± 25 KHz
-
min.
min.
min.
min.
max.
5 dB
15 dB
20 dB
40 dB
15 dBm
- 40 °C ... + 85°C
- 45 °C ... + 90°C
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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