Filename: tfs 464a.doc
Version 1.4
13.09.2006
VI
TELEFILTER
Measurement condition
Ambient temperature:
Input power level:
Terminating impedance: *
Input:
Output:
23
0
°C
dBm
Filter specification
TFS 464A
1/5
850
Ω
|| -3,2 pF
920
Ω
|| -3,1 pF
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
Insertion loss
(reference level)
Nominal frequency
Centre frequency
Passband
Pass band ripple
1dB bandwidth
ae = amin
typ. value
8,8
-
464,05
-
0,35
3,40
dB
MHz
MHz
dB
tolerance / limit
max.
13,0
464,00
-
f
N
± 1,575 MHz
max.
min.
max.
1,0
3,15
3,75
dB
MHz
MHz
dB
MHz
f
N
f
C
Relative attenuation
f
N
-
200
96
f
N
-
47
f
N
-
3,5
f
N
+
192
f
N
+
VSWR within PB
Group delay
Group delay ripple
Operating temperature range
Storage temperature range
Frequency inversion temperature
Temperature coefficient of frequency
MHz
MHz
MHz
MHz
MHz
…
…
…
…
…
f
N
f
N
f
N
f
N
f
N
-
-
-
+
+
96
47
3,5
192
200
arel
MHz
MHz
MHz
MHz
MHz
at f
N
70
65
47
44
57
1,5:1
0,640
90
OTR
-
-
30
TCf **
-0,036
°C
ppm/K²
dB
dB
dB
dB
dB
µs
ns
min.
min.
min.
min.
min.
max.
max.
max.
40
50
40
40
30
2:1
0,85
200
dB
dB
dB
dB
dB
µs
ns
- 40 °C ... + 85°C
- 45 °C ... + 85°C
*) 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-T
0
)² x fcat(MHz).
Generated:
Checked / Approved:
Tele Filter GmbH
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
VI TELEFILTER reserves the right to make changes to the product(s) and/or information contained herein without notice. No liability is
assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.
VECTRON [ Vectron International, Inc ]
