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TFS140G Filter Specificationl
型号:   TFS140G
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描述:   Filter Specificationl
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品牌   VECTRON [ Vectron International, Inc ]
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tfs 140G.doc
Version 1.3
28.11.2000
VI TELEFILTER
Filter Specification
TFS 140G - 1/5
1. Measurement condition
Ambient temperature
T
A
:
Input power level:
Terminating impedances at fc:
Q-value of matching elements:
Source impedance:
Load impedance:
23 °C
0 dBm.
for input:
for output:
70
50
50
180

- 16,5 pF.
200

- 12,0 pF.
2. Characteristics
Remark:
Reference level for the relative attenuation
arel
of the
TFS 140G
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
3 dB
filter attenuation level relative to the insertion loss
ae.
The temperature coefficient of frequency
Tc
f
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
Insertion loss
(Reference level)
Centre frequency
ae
typ. value
18...18,5 dB
140,01 MHz
tolerance / limit
max.
20 dB
fc
at ambient temperature T
A
(f
CAT
)
140 ± 0,06 MHz
f
C
- 0,85 MHz.....f
C
+ 0,85 MHz
Pass band (PB)
at ambient temperature T
A
:
Amplitude ripple (p-p):
Bandwidth
1
3
20
40
45
f
C
..... f
C
± 0,70 MHz
0,5...0,6 dB
max.
1 dB
at ambient temperature:
dB - band width
dB - band width
dB - band width
dB - band width
dB - band width
arel
f
C
±
f
C
±
f
C
±
f
C
±
0,70
0,85
2,30
40
MHz
MHz
MHz
MHz
0,6
2,5
42...55
55....70
dB
dB
dB
dB
max.
max.
min.
min.
1
3
40
45
dB
dB
dB
dB
1,50
1,74
2,29
2,55
2,65...3,10
MHz
MHz
MHz
MHz
MHz
min. 1,40 MHz
min. 1,70 MHz
max. 2,60 MHz
max. 4,60 MHz
Relative attenuation
f
C
f
C
± 0,70
f
C
± 1,30
f
C
± 2,30
............
MHz .....
MHz .....
MHz .....
Group delay ( mean value in PB ):
Group delay ripple in PB (p-p):
Deviation from linear phase in PB (p-p):
Input VSWR (S11) in PB :
Output VSWR (S22) in PB :
Triple transit attenuation compared to main signal
Crosstalk
Substrate material
Frequency inversion temperature ( T
o
)
Temperature coefficient of frequency ( Tc
f
)
Frequency deviation of fc over temperature: * )
Operating temperature range
Storage temperature range
2,54 µs
140...160 ns
2,8°...4,5° ( r.m.s. 0,8° )
(1,6...1,8) : 1
(1,4...1,8) : 1
41...42 dB
55...65 dB
max. 3,0 µs
max. 200 ns
max. 5°
max. 2 : 1
max. 2 : 1
min. 40 dB
Quartz
25°...30° C
-0,036...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 frequence
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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