TFS210C_08 Datasheet, PDF (2/2 Pages) Vectron International, Inc – Application Note

Ltp:tft031
version 1.0
18.12.08
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VI TELEFILTER
Application Note
TFS 210C - 2/2
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3. Matching on the PCB
For example: PCB with 50 Ω test circuit 1
L1
7
1
L2
C1
SAW
C2
L1 = 68 nH
C1 = 4.7 pF
2,3,4,5,6,8,9,10,11,12
L2 = 68 nH
C2 = 4.7 pF
The matching on the PCB does slightly differ from the theoretical matching. The reason for that are
parasitics of the PCB.
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.
In case of questions please contact us to
VI TELEFILTER
Potsdamer Straße 18
D 14 513 TELTOW / Germany
Tel: [phone] / Fax: [phone]
E-Mail: [e-mail]
Vectron International, Inc.
267 Lowell Road
Hudson, NH 03051 / USA
Tel: [phone] Fax: [phone]
E-Mail: [e-mail]
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assumed as a result of their use or application. No rights under any patent accompany the sale of any such product(s) or information.