TFS141 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

Tfs141.doc
VI TELEFILTER
version 3.0
Filter Specification
TFS 141
09.04.2002
1/5
Measurement condition
Ambient temperature T_A:
Input power level:
Terminating impedances at fc *
input:
output:
23 °C
0 dBm
1,07 kΩ || -13,2 pF
1,10 kΩ || -12,4 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 141 is the minimum of the pass band attenuation amin. It is defined as the insertion
loss ae. The centre frequence fc is the arithmetic mean value of the upper and lower frequencies at the 1,5 dB filter attenuation level relative to
the insertion loss ae. The nominal frequency f_N is fixed on 141,700 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
typ. value
tolerance / limit
Insertion loss (Reference level) ae
Nominal frequency
f_N
Centre frequency
f_c
1,5 dB Passband
Relative attenuation arel
f_N ± 1,1 MHz
f_N ± 2,0 MHz... f_N ± 10,0 MHz
f_N ± 10,0 MHz... f_N ± 100 MHz
VSWR:
12,5 dB
-
141,700 MHz
2,6 MHz
1,0 dB
47
dB
60
dB
13
dB
max. 15,0
141,7
dB
MHz
min. 2,2 MHz
max. 1,5 dB
min. 40,0 dB
min. 35,0 dB
Input power level:
min 10
dBm
Operating temperature range
0 °C ... + 70 °C
Temperature coefficient of frequency
Frequency inversion temperature
Tc_f **
To
-0,036 ppm/ K²
25 °C
*) 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/K²) x (T-T₀)² x fTo(MHz)
Generated:
Checked/Approved:
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
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