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PDF B4874 Data sheet ( Hoja de datos )
| Número de pieza | B4874 | |
| Descripción | SAW Components | |
| Fabricantes | EPCOS | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de B4874 (archivo pdf) en la parte inferior de esta página. Total 7 Páginas | ||
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IF Filters for Narrowband Cellular Phones
Series/Type:
B4874
The following products presented in this data sheet are being withdrawn.
Ordering Code
Substitute Product
B39860B4874Z710
Date of
Withdrawal
2003-03-07
Deadline Last
Orders
2003-07-31
Last Shipments
2003-09-30
For further information please contact your nearest EPCOS sales office, which will also support
you in selecting a suitable substitute. The addresses of our worldwide sales network are
presented at www.epcos.com/sales.
1 page  
SAW Components
Low Loss Filter for Mobile Communication
Data Sheet
Test matching networks to 50 Ω (element values depend on pcb layout)
a) Unbalanced - unbalanced matching network
B4874
85,38 MHz
b) Balanced - balanced matching network
Input: Pin 10
Output: Pin 5
Ls1 =
Cp2 =
Cp3 =
Ls4 =
390 nH
4,7 pF
4,7 pF
390 nH
Input: Pins 10 and 9
Output: Pins 5 and 4
Cs1 = 8,2 pF
Cs2 = 8,2 pF
Lp1 = 680 nH
Lp2 = 680 nH
Cs3 = 10 pF
Cs4 = 8,2 pF
Note :
The balanced - balanced network is realized using M/A-COM 1:4 baluns TP-103. The insertion
attenuation of each balun is 0,4 dB at fN. The loss of the baluns is not included in the specified
filter insertion attenuation. S-Parameters of the M/A-COM 1:4 baluns TP-103 are available on re-
quest.
The level of ultimate suppression may be limited by electromagnetic feedthrough depending on
the layout of the pcb and the arrangement of the matching components.
The above mentioned characteristics can be realized either in balanced or in unbalanced mode
of operation.
For more details see our application note PCB Layout for Highly Selective IF Filters.
4 May 08, 2001
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet B4874.PDF ] | |
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