TFS140A Datasheet, PDF (1/4 Pages) Vectron International, Inc – Filter Specification

tfs 140A.doc
VI TELEFILTER
Filter Specification
Version 2.1
06.11.2000
TFS 140A - 1/4
1. Measurement condition
Ambient temperature TA:
Input power level:
Terminating impedances at fc:
Q-value of matching elements:
23 °C
0 dBm.
for input:
for output:
70
290 Ω  - 13,62 pF.
260 Ω  - 14,35 pF.
2. Characteristics
Remark: Reference level for the relative attenuation arel of the TFS 140A 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 reference frequency fc is the arithmetic mean value of the upper and lower
frequencies at the 20 dB filter attenuation level relative to the insertion loss ae. The temperature coefficient of frequency Tcf is valid both for the
reference frequency fc and the frequency response of the filter in the operating temperature range. The frequency shift of the filter in the operating
temperature range is not included in the production tolerance scheme.
Data
typ. value
tolerance / limit
Insertion loss (Reference level) ae
22,5...22,8 dB
max. 25 dB
Centre frequency fc at ambient temperature TA (fCAT)
140,01 MHz
140,0 ± 0,1 MHz
Pass band at ambient temperature TA:
fC - 1,5 MHz.....fC + 1,5 MHz
Amplitude ripple (p-p):
fC ... fC ± 1,30 MHz
fC ± 1,30 MHz fC ± 1,40 MHz
Bandwidth at ambient temperature:
1 dB - band width
3 dB - band width
20 dB - band width
40 dB - band width
45 dB - band width
0,45 dB
0,7 dB
2,88 MHz
3,13 MHz
3,83 MHz
4,20 MHz
4,24 MHz
max. 0,7 dB
max. 1 dB
min. 2,80 MHz
min. 3,00 MHz
max. 4,25 MHz
max. 4,50 MHz
Relative attenuation
arel
fC
............
fC ± 1,4 MHz .....
fC ± 2,125 MHz .....
fC ± 2,25 MHz .....
fC - 135 MHz .....
fC - 100 MHz .....
fC + 80 MHz .....
fC + 80 MHz .....
fC ± 1,4
fC ± 1,5
fC ± 2,25
fC ± 80
fC - 100
fC - 80
fC + 125
fC + 300
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
Group delay ( mean value in pass band ):
Group delay ripple in pass band (p-p):
Deviation from linear phase in pass band (p-p):
-
-
45...50 dB
48...65 dB
55...70 dB
55...70 dB
35...40 dB
55....70 dB
2,68 µs
80...90 ns
5° (r.m.s. 1°)
max.
max.
min.
min.
min.
min.
min.
min.
1 dB
3 dB
40 dB
45 dB
50 dB
45 dB
32 dB
50 dB
max. 2,8 µs
max. 150 ns
Input VSWR (S11) in PB :
Output VSWR (S22) in PB :
Triple transit attenuation compared to main signal
Crosstalk
1,25 : 1
1,30 : 1
47...49 dB
56...60 dB
Frequency inversion temperature ( To )
Temperature coefficient of frequency ( Tcf )
Frequency deviation of fc over temperature: * )
25° C
-0,045 ppm/K²
∆fc(Hz) = Tcf(ppm/K) x (T - To)² x fTo (MHz)
Operating temperature range
Storage temperature range
-25 °C ... + 80 °C
- 40 °C ... + 85 °C
* ) fTo is reference frequency fc at frequency inversion temperature (To )
Generated:
Dunzow W.P.
Checked/Approved:
Dr. Bert Wall
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]
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