TFS464A Datasheet, PDF (1/5 Pages) Vectron International, Inc – Filter specification

Filename: tfs 464a.doc
VI TELEFILTER
Version 1.4
Filter specification
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
°C
0
dBm
850 Ω || -3,2 pF
920 Ω || -3,1 pF
TFS 464A
13.09.2006
1/5
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 464A 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 centre frequency f_C is the arithmetic mean value of the upper and lower frequencies at the 1dB
filter attenuation level relative to the insertion loss ae. The nominal frequency fN is fixed at 464,0 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 even if the centre frequency f_C 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 f_C.
Data
typ. value
tolerance / limit
Insertion loss
(reference level)
Nominal frequency
Centre frequency
Passband
Pass band ripple
1dB bandwidth
ae = amin
f_N
f_C
8,8 dB
-
464,05
-
0,35
3,40
MHz
dB
MHz
max.
13,0 dB
max.
min.
max.
464,00 MHz
-
f ± 1,575 MHz
N
1,0 dB
3,15 MHz
3,75 MHz
Relative attenuation
f_N -
f_N -
f_N -
f_N +
f+
N
200
96
47
3,5
192
MHz … f_N -
MHz … f_N -
MHz … f_N -
MHz … f_N +
MHz … f +
N
VSWR within PB
96
47
3,5
192
200
arel
MHz
MHz
MHz
MHz
MHz
70
dB
65
dB
47
dB
44
dB
57
dB
1,5:1
min.
min.
min.
min.
min.
max.
40 dB
50 dB
40 dB
40 dB
30 dB
2:1
Group delay
Group delay ripple
at f_N
0,640 µs
90
ns
max.
max.
0,85 µs
200 ns
Operating temperature range
OTR
-
- 40 °C ... + 85°C
Storage temperature range
-
- 45 °C ... + 85°C
Frequency inversion temperature
30
°C
Temperature coefficient of frequency
TCf **
-0,036 ppm/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 fcat(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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