File name: TFH70E.doc
Version 1.2
09.03.2001
VI TELEFILTER
Filter Specification
TFH 70E
1/5
1. Measurement condition :
Ambient temperature TA:
23 °C
Input power level:
Terminating impedances at f :
0 dBm.
for input:
for output:
> 50
1287 Ω - 6,97 pF.
1227 Ω - 7,18 pF.
c
Q-value of matching elements:
2. Characteristics :
Remark: The insertion loss a is defined as the insertion loss at the nominal frequency fN . Reference level for the relative attenuation a
of the
e
rel
TFH 70E is the insertion loss. The reference frequency f is the arithmetic mean value of the upper and lower frequencies at the 3 dB filter
c
attenuation level relative to the insertion loss a . The temperature coefficient of frequency Tcf is valid both for the reference frequency f and the
e
c
frequency response of the filter in the operating temperature range. The frequency shift of the filter in the operating temperature range is included in
the production tolerance scheme.
Data
typ. value
25 dB
tolerance / limit
Insertion loss (Reference level)
a
max.
27
dB
e
Nominal frequency
Centre frequency
f
70
MHz
MHz
N
f
at ambient temperature TA (fCAT
)
70,01 MHz
70,0 ± 0,09
fN .... fN ± 1,5
c
Pass band at ambient temperature TA: ( PB )
MHz
dB
Amplitude ripple in O.T.R. (p-p) in : fN ... fN ± 1,4 MHz
0,5
dB
max.
0,8
Bandwidth in O.T.R. :
0,8 dB - band width
3,19 MHz
3,22 MHz
3,61 MHz
4,66 MHz
5,21 MHz
5,31 MHz
min.
min.
min.
2,8
3,0
3,5
MHz
MHz
MHz
1
3
dB - band width
dB - band width
dB - band width
dB - band width
dB - band width
20
40
45
max.
5,6
MHz
Relative attenuation
fN
a
rel
fN
±
1,4 MHz
0,5
0,7
2,5
dB
dB
dB
max.
max.
max.
0,8
1
3
dB
dB
dB
.....
fN
fN
±
±
1,4 MHz ... fN ± 1,5 MHz
1,5 MHz ... fN ± 1,75 MHz
fN
fN
±
±
2,8 MHz ... fN ± 5,0 MHz
44...53
dB
dB
dB
dB
dB
min.
min.
40
50
dB
dB
5,0 MHz ... fN ± 20
MHz
MHz
MHz
53...65
75...65
42...45
65...70
fN - 65
fN + 35
fN + 63
MHz ... fN
-
20
MHz ... fN + 63
MHz ... fN + 200 MHz
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase in PB band (p-p):
2,76 µs
45
ns
max. 100
max.
ns
°
2,6° (r.m.s. 0,6°)
6
(S11) / (S22) in PB :
Triple transit attenuation compared to main signal
Crosstalk
3 / 3
59
52
dB
dB
dB
Frequency inversion temperature ( To )
30
° C
Temperature coefficient of frequency ( Tcf )
-0,045 ppm/K²
∆f (Hz) = Tcf(ppm/K) x (T - To)² x fTo (MHz)
Frequency deviation of f over temperature: * )
C
c
Operating temperature range ( O.T.R. )
Storage temperature range
0 °C ... + 70 °C
-40 °C ... + 85 °C
* ) fTo is reference frequency f at frequency inversion temperature (To )
c
Generated:
Checked/Approved:
VI TELEFILTER
Vectron International, Inc.
Potsdamer Straße 18
267 Lowell Road
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
e-mail: tft@telefilter.com
e-mail: vti@vtinh.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.