
Filename: tfs 1405.doc
Version 1.2
06.04.2005
VI TELEFILTER
Filter specification
TFS 1405
1/5
Tele Filter GmbH
Potsdamer Strae 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.
Measurement condition
Ambient temperature:
23
°C
Input power level:
0
dBm
Terminating impedance: *
Input:
185 || -0,95 pF
Output:
200 || -0,95 pF
Characteristics
Remark:
The maximum attenuation in the pass band is defined as the insertion loss ae. The nominal frequency fN is fixed at 1405 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.
D a t a
typ. value
tolerance / limit
Insertion loss
ae
3,8
dB
max.
5,0
dB
Nominal frequency
fN
-
1405
MHz
Passband
PB
-
fN
±
150
kHz
Pass band ripple
0,7
dB
max.
± 1,1
dB
Bandwidth
3
dB
1,65
MHz
min.
1,0
MHz
Absolute attenuation
aabs
0,3
MHz
… 1375
MHz
29
dB
min.
24
dB
1375
MHz
… 1401,5
MHz
25
dB
min.
18
dB
1408
MHz
… 1420
MHz
25
dB
min.
18
dB
1420
MHz
… 1750
MHz
28
dB
min.
24
dB
VSWR within PB
1,4 : 1
max.
1,7 : 1
Input power level
-
max.
20
dBm
Operating temperature range
OTR
-
- 45 °C ... + 70°C
Storage temperature range
-
- 45 °C ... + 85°C
Frequency inversion temperature
40
°C
-
Temperature coefficient of frequency
TCf **
-0,051
ppm/K
-
*) The terminating impedances depend on parasitics and q-values of matching elements and the board used, and are to be understood as reference
values only. Should there be additional questions do not hesitate to ask for an application note or contact our design team.
**)
f(Hz) = TCf(ppm/K) x (T-T0) x fTo(MHz).
Generated:
Checked / Approved: