
tfs70H11.doc
VI TELEFILTER
Version 1.2
TFS 70H11
19.11.2002
Filter Specification
1/5
1. Measurement condition :
Ambient temperature T
A
:
Input power level:
Terminating impedances in fc:
2. Characteristics :
Remark:
Reference level for the relative attenuation
arel
of the
TFS 70H11
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 frequency
fc
is the arithmetic mean value of the upper and lower
frequencies at the
20 dB
filter attenuation level relative to the insertion loss
ae.
The temperature coefficient of frequency
Tc
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
25
0
for input:
for output:
°C.
dBm.
50
0 pF.
50
0 pF.
typ. value
tolerance / limit
Insertion loss
(Reference level)
ae
fc
21,5
dB
max. 23
dB
Centre frequency
at ambient temperature
(f
CTA
)
70,0
MHz
70,0 ±0,1
MHz
Pass band :
PB
fc
±3,5
MHz
Amplitude ripple in
fc ± 3 MHz:
0,5
dB
Bandwidth
at ambient temperature T
A
:
BW
1
3
dB
dB
6,7
7,1
MHz
MHz
min.
min.
6,5
7,0
MHz
MHz
10
20
40
dB
dB
dB
8,7
9,1
9,2
MHz
MHz
MHz
max.
MHz
9,7
Relative attenuation
arel
fc
fc ±
fc ±
fc ±
..... fc ±
MHz ..... fc ±
MHz ..... fc ±
MHz ..... fc ±
3,25 MHz
3,5
-
-
max.
max.
1
3
dB
dB
3,25
MHz
4,85
15
15
60
MHz
MHz
47
55
dB
dB
min.
min.
40
50
dB
dB
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase in PB :
1,85
45
3°
μs
ns
max. 100
max.
ns
4 °
Triple transit attenuation compared to main signal
Crosstalk
50
65
dB
dB
Temperature coefficient of frequency ( Tc
f
) :
Frequency deviation of fc over temperature :
Operating temperature range
Storage temperature range
-87
ppm/K2
fc(Hz) = Tc
f
(ppm/K) x (T - T
o
) x f
CTA
(MHz)
- 25 °C ... + 80 °C
- 40 °C ... + 85 °C
Generated:
E.Chilla
Checked/Approved:
B. Wall
VI TELEFILTER
Potsdamer Strae 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
E-Mail:
tft@telefilter.com
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