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TFH70D Filter Specification
型号:   TFH70D
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描述:   Filter Specification
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品牌   VECTRON [ Vectron International, Inc ]
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File name: TFH70D.doc
Version 1.0
09.03.2001
VI TELEFILTER
1. Measurement condition :
Ambient temperature
T
A
:
Input power level:
Terminating impedances at fc:
Q-value of matching elements:
23 °C
0 dBm.
for input:
for output:
>
50
Filter Specification
TFH 70D
1/5
1088
Ω 
- 7,20 pF.
932
Ω 
- 7,92 pF.
2. Characteristics :
Remark: The insertion loss
ae
is defined as the insertion loss at the nominal frequency
f
N
. Reference level for the relative attenuation
arel
of the
TFH 70D
is the insertion loss. The reference 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 temperature coefficient of frequency
Tc
f
is valid both for the centre 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 included in
the production tolerance scheme.
Data
Insertion loss
(Reference level)
ae
typ. value
26
70,01
dB
MHz
tolerance / limit
max.
27
dB
MHz
MHz
MHz
dB
Nominal frequency
f
N
Centre frequency
fc
at ambient temperature T
A
(f
CAT
)
Pass band
at ambient temperature T
A
:
( PB )
Amplitude ripple in O.T.R. (p-p) in :
Bandwidth in O.T.R. :
0,8
1
3
20
40
45
dB - band width
dB - band width
dB - band width
dB - band width
dB - band width
dB - band width
arel
f
N
... f
N
± 1,4 MHz
70
70,0 ± 0,09
f
N
.... f
N
± 1,5
0,5
dB
max.
0,8
3,19
3,22
3,61
4,66
5,21
5,31
MHz
MHz
MHz
MHz
MHz
MHz
min.
min.
min.
max.
2,8
3,0
3,5
5,6
MHz
MHz
MHz
MHz
Relative attenuation
f
N
±
f
N
±
f
N
..... f
N
± 1,4 MHz
1,4 MHz ... f
N
± 1,5 MHz
1,5 MHz ... f
N
± 1,75 MHz
MHz ... f
N
±
MHz ... f
N
±
MHz ... f
N
-
MHz ... f
N
+
MHz ... f
N
+
5,0
20
20
63
200
MHz
MHz
MHz
MHz
MHz
0,5
0,7
2,5
44...53
53...65
75...65
42...45
65...70
dB
dB
dB
dB
dB
dB
dB
dB
max.
max.
max.
min.
min.
0,8
1
3
40
50
dB
dB
dB
dB
dB
f
N
± 2,8
f
N
± 5,0
f
N
- 65
f
N
+ 35
f
N
+ 63
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase in PB band (p-p):
(S11) / (S22) in PB :
Triple transit attenuation compared to main signal
Crosstalk
Frequency inversion temperature ( T
o
)
Temperature coefficient of frequency ( Tc
f
)
Frequency deviation of f
C
over temperature: * )
Operating temperature range ( O.T.R. )
Storage temperature range
2,76 µs
45
ns
2,6° (r.m.s. 0,6°)
3/3
59
52
dB
dB
dB
max.
max.
100
6
ns
°
30
°C
-0,045 ppm/K²
∆f
c(Hz) = Tc
f
(ppm/K) x (T - T
o
)² x
f
To
(MHz)
0 °C ... + 70 °C
-40 °C ... + 85 °C
* ) f
To
is reference frequency
fc
at frequency inversion temperature (T
o
)
Generated:
Dunzow W.P.
Checked/Approved:
Dr. Bert Wall
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-0 / Fax: (+49) 3328 4784-30
e-mail:
tft@telefilter.com
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
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.
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