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參數資料
| 型號： | TFS840 |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | Filter Specification |
| 中文描述： | 1 FUNCTIONS, 840 MHz, SAW FILTER |
| 文件頁數： | 1/5頁 |
| 文件大小： | 134K |
| 代理商： | TFS840 |
Tfs840.doc
VI
TELEFILTER
version 1.2
02.09.2002
Filter Specification
TFS 840
1/5
Measurement condition
Ambient temperature:
Input power level:
Terminating impedances
23
0
°
C
dBm
for input: 195
// -0,25 pF
for input: 195
// -0,25 pF
Characteristics
Remark:
Reference level for the relative attenuation arel of the TFS 840 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 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 nominal frequency fN is fixed on 840,0 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 also if the centre
frequency fc 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 fc.
D a t a
typ. value
tolerance/limit
Insertion loss
(Reference level)
ae = amin
3,75
dB
max.
5,5
dB
Nominal frequency
fN
fc
-
840,0
MHz
Centre frequency
840,0
MHz
2 dB Bandwidth
BW
49,50
MHz
min.
40,0
MHz
Pass band ripple
within
±
20,0 MHz
1,5*
dB
max.
2,0
dB
Relative attenuation
f
N
.... f
N
±
20,0
f
N
- 160,0 MHz .... f
N
- 740,0 MHz
f
N
+ 120,0 MHz .... f
N
+ 260,0 MHz 50,0
f
N
+ 260,0 MHz .... f
N
+ 300,0 MHz 50,0
f
N
+ 300,0 MHz .... f
N
+ 660,0 MHz 50,0
Operating temperature range
arel
MHz
-
max.
2,0
dB
50,0
dB
dB
dB
dB
min.
min.
min.
min.
30,0
45,0
40,0
- 25
°
C ... + 75
°
C
40,0
dB
dB
dB
dB
Storage temperature range
- 30 °C ... + 80 °C
*) 1,5 dB over
f
N
±
20 MHz at ambiente temperature (23 °C).
Generated:
Checked / approved:
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
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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