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參數(shù)資料
| 型號： | TFS471A |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | 聲表面波濾波器 |
| 英文描述： | VI SAW濾波器(VI SAW Filter) |
| 中文描述： | 1 FUNCTIONS, 471.55 MHz, SAW FILTER |
| 文件頁數(shù)： | 2/2頁 |
| 文件大?。?/td> | 13K |
| 代理商： | TFS471A |
Ltp: tft028
______________________________________________________________________________________________________
VI TELEFILTER
Application note
______________________________________________________________________________________________________
Version 1.0
01.11.00
TFS471A
2
/
2
3. Matching on the PCB
The following matching elements have been used at the PCB:
L1
______________________________________________________________________________________________________
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
SAW
1,2,3,6,7,8
5
10
L2
Output
50 Ohm
C2
Input
50 Ohm
C1
L1=L2=33nH
C1,C2 can be left
Addition to that some 0
jumpers have been used.
The stray capacitance of the PCB is comparable to the theoretical values of the shunt capacitors. So
they can be left. The matching on the PCB does slightly differ from the theoretical matching. The
reason for that are parasitics of the PCB.
But if the parasitics on the customer board (mentioned parasitics, additional parasitics of active parts)
are different to this PCB the matching elements have to be slightly adjusted. Both in line and shunt
elements change both passband tilt and passband ripple. But
- the in line coils mainly influences the pass band tilt
- the shunt capacitors mainly influences the pass band ripple
an increase of the capacity value will decrease the passband ripple and will change a flat
characteristic to a round one
相關PDF資料 |
PDF描述 |
|---|---|
| TFS52 | Minimum of the pass band attenuation |
| TFS57 | Filter specification |
| TFS60A | Filter specification |
| TFS622 | Filter Specification |
| TFS65 | Filter specification |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TFS471A1 | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter Specification |
| TFS471B | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
| TFS471C | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter Specification |
| TFS471D | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
| TFS482 | 制造商:VECTRON 制造商全稱:Vectron International, Inc 功能描述:Filter specification |
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