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Dec 19, 2008

SAW Components

B30674-D2024-R424

D2024

SAW Frontend Module for Mobile Communication

Data Sheet

Please read cautions and warnings and

important notes at the end of this document.

EPCOS

Application Note

1. Termination of unused port

Termination of unused Rx GSM ports is not required.

Unused WCDMA ports must be terminated with 50

Ω.

■

Variant 1

■

Variant 2

Termination of unused WCDMA ports if WCDMA 1900 port is used for WCDMA 2100 frequencies:

■

Variant 1

■

Variant 2

2. DC blocking

DC blocking capacitors needed only when non-zero DC voltage is present for the following ports:

GSM850 / EGSM Tx, WCDMA 850, WCDMA 1900

DC blocking capacitors at the Rx GSM ports are not required, except the maximum ratings (please

see page 4) are exceeded.

20

21

22

WCDMA 2100

FEM

47

Ω

47

Ω

20

21

22

WCDMA 2100

100

Ω

FEM

100

Ω

100

Ω

100

Ω

20

21

22

WCDMA 2100

FEM

47

Ω

47

Ω

20

21

22

100

Ω

FEM

100

Ω

100

Ω

100

Ω

WCDMA 2100

WCDMA 1900

FEM

≥ 33 pF

≥ 33 pF

WCDMA 850

GSM850 / EGSM Tx

≥ 33 pF

21

22

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