6

Mar 11, 2005

SAW Components

B4956

85,38 MHz

Low-Loss Filter for Mobile Communication

Data Sheet

Figure 1: Matching network for 1570

Ω / 500Ω configuration

Figure 2: Test matching network

(Element values depend on pcb layout)

Published by EPCOS AG

Surface Acoustic Wave Components Division, SAW MC PD

P.O. Box 80 17 09, 81617 Munich, GERMANY

© EPCOS AG 2005. Reproduction, publication and dissemination of this brochure and the informa-

tion contained therein without EPCOS’ prior express consent is prohibited.

Purchase orders are subject to the General Conditions for the Supply of Products and Services of

the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic

Manufacturers’ Association), unless otherwise agreed.

This brochure replaces the previous edition.

For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or

the international Representatives.

Due to technical requirements components may contain dangerous substances. For information on

the type in question please also contact one of our Sales Offices.

10

5

Input

1900Ω

balanced

267 nH

Q=45

261 nH

Q=45

Output

2100Ω

balanced

4

B7104

pins 2,7 GND

balanced input: pins 9,10

balanced output: pins 4,5

not connected: 1,3,6,8

9

B4956

INPUT

1570

Ω

balanced

361 nH

258 nH

OUTPUT

500

Ω

balanced

10

5

2.2 pF

fine tuning cap

180 nH

Q=40

180 nH

Q=40

4.7 pF

50 Ω

2.7 pF

fine tuning cap

4

5.6 pF

4.7 pF

B7104

pins 2,7 GND

balanced input: pins 9,10

balanced output: pins 4,5

not connected: 1,3,6,8

4.7 pF

9

1:4

50 Ω

4:1

8,2 nH

8,2 nH

220 nH

180 nH

12 pF

12 pF

B4956