TFS140C Datasheet, PDF (1/4 Pages) Vectron International, Inc – Filter Specification

tfs140 C.doc
VI TELEFILTER
Filter Specification
Version 3.1
04.07.2000.
TFS 140C - 1/4
1. Measurement condition
Ambient temperature TA:
Input power level:
Terminating impedances in fc:
Q-value of matching elements:
25 °C.
0 dBm.
for input:
for output:
30
833,5 Ω  - 7,879 pF. (typical value)
941,3 Ω  - 8,379 pF. (typical value)
2. Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 140C 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 frequence fc is the arithmetic mean value of the upper and lower frequencies at
the 3 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
Centre frequency fc at ambient temperature (fCTA)
Pass band ( PB ) :
Amplitude ripple in PB (p-p):
21 dB
140,01 MHz
0,3..0,4 dB
max. 23 dB
140 ± 0,1MHz
fc - 2,35 MHz ... fc + 2,35 MHz
max. 0,7 dB
Bandwidth :
0,7 dB - band width
3 dB - band width
20 dB - band width
40 dB - band width
45 dB - band width
at ambient temperature TA
4,73 MHz
5,23 MHz
6,29 MHz
6,80 MHz
6,88 MHz
min. 4,7 MHz
min. 5,0 MHz
max. 7,0 MHz
max. 9,0 MHz
Relative attenuation
arel
fc ± 2,35
fc ± 3,50
fc - 135
fc + 4,50
fc ..... fc ± 2,35 MHz
MHz ..... fc ± 2,50 MHz
MHz ..... fc ± 4,50 MHz
MHz ..... fc - 4,50 MHz
MHz ..... fc + 400 MHz
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase in fc ... fc ± 2,5 MHz
Triple transit attenuation compared to main signal
Crosstalk
-
-
48 dB
70...55 dB
55...70 dB
2,14 µs
60...80 ns
5 ° (r.m.s. 1,3 °)
44..47 dB
60...65 dB
max. 0,7 dB
max. 3 dB
min. 40 dB
min. 45 dB
min. 45 dB
max. 2,2 µs
max. 120 ns
Substrate material
Frequency inversion temperature ( To ) :
Temperature coefficient of frequency ( Tcf ) :
Frequency deviation of fc over temperature :
Operating temperature range
Storage temperature range
Quartz
20 °C.
-0.036 ppm/K²
∆fc(Hz) = Tcf(ppm/K) x (T - To)² x fCTA (MHz)
- 25 °C ... + 80 °C
- 40 °C ... + 85 °C
*) fO = fTo is reference frequence fc at frequency inversion temperature (To )
Generated:
Checked/Approved:
Wadim Dunzow
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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