TFS1278A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Vectron International Filter specification

Filename: tfs 1278a.doc
Vectron International
Measurement condition
Ambient temperature:
23
Input power level:
0
Terminating impedance:
Input:
50
Output:
50
Version 3.0
Filter specification
°C
dBm
Ω
Ω
TFS 1278A
03.05.2011
1/5
Characteristics
Remark:
The maximum attenuation in the pass band is defined as the insertion loss ae. The nominal frequency f_N is fixed at 1278,75 MHz without any tolerance or
limit. The values of absolute attenuation aabs are guaranteed for the whole operating temperature range. The frequency shift of the filter in the operating
temperature range is included in the production tolerance scheme.
Data
typ. value
tolerance / limit
Insertion loss in PB
Insertion loss in PB1
Nominal frequency
Passband
Passband
Pass band variation in PB1
Absolute attenuation
0,3
1178
1218
MHz
MHz
MHz
… 1178
… 1218
… 1228
1238,75
MHz
MHz
MHz
MHz
1328
1338
1378
MHz
MHz
MHz
1318,75
… 1338
… 1378
… 3000
MHz
MHz
MHz
MHz
Group delay ripple within PB
Group delay ripple within PB1
VSWR within PB
Input power level in PB
Operating temperature range
Storage temperature range
Temperature coefficient of frequency
ae
f_N
PB
PB1
aabs
OTR
TCf *
2,6 dB
1,5 dB
-
-
-
0,4 dB
40
dB
45
dB
45
dB
35
dB
54
dB
53
dB
51
dB
38
dB
35
ns
11
ns
1,8 : 1
-
-
-
-42
ppm/K
max.
max.
4,0 dB
2,0 dB
1278,75 MHz
f_N ± 15,0 MHz
f_N ± 5,0 MHz
max.
1,0 dB
min.
min.
min.
min.
min.
min.
min.
min.
max.
max.
32 dB
42 dB
32 dB
17 dB**
17 dB***
32 dB
42 dB
32 dB
50 ns
30 ns
max.
2:1
max.
15 dBm
- 45 °C ... + 85°C
- 55 °C ... + 105°C
*) ∆fc(Hz) = Tc_f(ppm/K) x (T - T_o) x f_CAT (MHz).
**) stop band attenuation between 1228,0MHz and 1238,75MHz decreases linearly from 32dB to 17dB
***) stop band attenuation between 1318,75MHz and 1328,0 increases linearly from 17dB to 32dB
Generated:
Checked / Approved:
Vectron International GmbH & Co. KG
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
Vectron International GmbH & Co. KG 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.