TFS71C_05 Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 71c.doc
VI TELEFILTER
Version 1.3
Filter specification
TFS 71C
02.02.2005
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
Q-value of matching elements:
23
°C
0
dBm
440 Ω || -13,8 pF
380 Ω || -14,2 pF
>50
Characteristics
Remark:
The reference level for the relative attenuation arel of TFS 71C is the minimum of the pass band attenuation amin. This value is defined as the insertion
loss ae. The centre frequency 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 given values for the relative attenuation arel and the group delay ripple have to be reached at the frequencies given below, even 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
6,6 dB
max.
7,6 dB
Nominal frequency
Centre frequency
Passband
f_N
f_C
71,0 MHz
PB
71,0 MHz
71±0,015 MHz
f_C ± 80 kHz
Bandwidth
BW
1 dB
1,5 dB
3 dB
4 dB
20 dB
25 dB
35 dB
Relative attenuation
arel
f_C ± 65
f_C ± 200
f_C ± 400
f_C ± 800
f_C ± 1200
… f_C ±
kHz … f_C ±
65
82,5
kHz … f_C ± 400
kHz … f_C ± 800
kHz … f_C ± 1200
kHz … f_C ± 10
kHz
kHz
kHz
kHz
kHz
MHz
Group delay
mean value in PB
170
kHz
215
kHz
300
kHz
350
kHz
700
kHz
740
kHz
2000
kHz
0,7 dB
1
dB
5
dB
25
dB
28…35 dB
40…50 dB
2,05 µs
min.
130 kHz
min.
165 kHz
-
max. 400 kHz
max. 800 kHz
max. 1200 kHz
max. 3200 kHz
max.
max.
min.
min.
min.
min.
max.
1,0 dB
1,5 dB
4 dB
20 dB
25 dB
35 dB
2,5 µs
Group delay ripple in PB
150
ns
max. 300 ns
Deviation from linear phase in PB
2° p-p .. (0,5°r.m.s.)
-
Triple transit response suppression
35…40 dB
-
Crosstalk
>40
dB
Input power level
-
max.
10 dB
Operating temperature range
OTR
-
- 25 °C ... + 80°C
Storage temperature range
-
- 40 °C ... + 85°C
Frequency inversion temperature
Temperature coefficient of frequency
TCf **
22
°C
-0,045ppm/K²
*) 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:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
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