TFS208C Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter Specification

Tfs208C.doc
VI TELEFILTER
Measurement condition
Ambient temperature TA:
Input power level:
Terminating impedances at fc:
version 1.2
Filter Specification
23 °C
0 dBm
input:
output:
540 Ω  -5.88 pF
578 Ω  -6.6 pF
12.07.2000
TFS 208C
1/5
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 208C is the maximum of the pass band attenuation amax. The maximum of the pass
band attenuation amax 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 dB filter attenuation level relative to the insertion loss ae. The nominal frequency f_N is fixed on 208 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
max. 7,0 dB
min. 5,0 dB
Nominal frequency
f_N
-
208,0 MHz
Centre frequency
f_c
Passband width
Relative attenuation
arel
f_{N .....}
f_N ± 0,15
f_N ± 0,4 MHz f_N ±0,6
f_N ± 0,6 MHz f_N ±1,2
f_N ± 1,2 MHz f_N ±1,8
f_N ± 1,8 MHz f_N ±3,4
f_N ± 3,4 MHz f_N ±9,5
f_N ± 9,5 MHz f_N ±13
f_N ±13 MHz f_N +450
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
208,0 MHz
-
-
-
-
-
-
-
-
min. 300,0 kHz
max. 1,25 dB
min. 2,0 dB
min. 8,0 dB
min. 20,0 dB
min. 25,0 dB
min 30,0 dB
min 43,0 dB
min 55,0 dB
Group delay *)
Group delay rippel *)within ± 150 kHz
VSWR:
IP3 **)
Operating temperature range
Temperature coefficient of frequency ( Tcf ) ***)
Frequency inversion temperature To
Input power level:
*) measured with smoothing; smoothing aperture ≤ 30 KHz
**) modulation signals: fN and fN-28 MHz each of 10 dBm
***) ∆fc(Hz) = Tcf(ppm/K²) x (To - TA) ² x fTo (MHz)
fTo is reference frequence fc at frequency inversion temperature (To)
max 1,7 µs
min. 0,7 µs
max. 150,0 ns
max. 2,3: 1
min. 60,0 dB
- 10 °C ... + 85 °C
-0,029 ppm/ K²
30 C °
max. 10,0 dBm
Generated:
Checked/Approved:
Sabah
VI TELEFILTER
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D 14 513 TELTOW / Germany
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Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
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