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參數資料
| 型號： | TFS300A |
| 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, 300 MHz, SAW FILTER |
| 文件頁數： | 1/5頁 |
| 文件大小： | 65K |
| 代理商： | TFS300A |
______________________________________________________________________________________________________
______________________________________________________________________________________________________
VI TELEFILTER
Potsdamer Strae 18
D 14 513 TELTOW / Germany
Tel: (+49) 3328 4784-52 / 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.
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: (603) 598-0070 Fax: (603) 598-0075
E-Mail: vti@vtinh.com
1. Measurement condition :
Ambient temperature T
A
:
Input power level:
Terminating impedances in fc:
25 °C
0 dBm
for input:
for output:
50
215
-6,1 pF.
1190
-3,3 pF.
Q-value of matching elements:
2. Characteristics
Remark:
Reference level for the relative attenuation
arel
of the
TFS 300A
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
300 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
.
Data
typ. value
tolerance / limit
Insertion loss
(Reference level)
ae
16,3 dB
max. 20 dB
Nominal frequency
fN
fc
at ambient temperature
(f
CTA
)
-
300 MHz
Centre frequency
300,05 MHz
Pass band ( PB ) :
f
N
- 2,05 MHz ... f
N
+ 2,05 MHz
Amplitude ripple in PB (p-p) :
0,8 dB
max. 1 dB
Bandwidth
at operating temperature range
:
1 dB - band width
3 dB - band width
3 dB - band width
20 dB - band width
40 dB - band width
4,55 MHz
5,25 MHz
5,25 MHz
6,96 MHz
9,30 MHz
min. 4,1 MHz
min. 5,0 MHz
max.5,5 MHz
max. 10 MHz
Relative attenuation
arel
fN ...... fN ± 2,05
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
-
-
-
max. 1 dB
max. 3 dB
min.
min. 40 dB
min. 47 dB
min. 50 dB
fN ± 2,05 MHz .... fN ± 2,5
fN ± 2,75 MHz .... fN ± 5,0
fN ± 5
MHz .... fN ± 7
fN ± 7
MHz .... fN ± 25
fN ± 25
MHz .... fN ± 100
fN - 290
MHz .... fN - 100
fN + 100
MHz .... fN + 700
3 dB
43...45 dB
49...54 dB
55...70 dB
90 dB
90 dB
Group delay ( mean value in PB ):
Group delay ripple (p-p) in :
Deviation from linear phase (p-p)
1,1 μs
70 ns
2° (2,6°)
1,5 μs
fN ... fN ± 2,2 MHz
fN ... fN ± 1,8 (2,5) MHz
max.100 ns
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: * )
39 dB
60...65 dB
Quartz
-20°
-0,0297 ppm/K2
fc(Hz) = Tc
f
(ppm/K) x (T - T
o
)2 x
f
To
(MHz)
Operating temperature range
Storage temperature range
- 20 °C ... + 70 °C
- 40 °C ... + 85 °C
*) f
To
is reference frequency
fc
at frequency inversion temperature (
T
o
)
Generated: Dunzow W.
Checked/Approved: Dr. Bert Wall
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