4

May 09, 2001

SAW Components

B3570

868,30 MHz

Low-loss Filter

Data Sheet

Characteristics

Reference temperature:

Terminating source impedance:

Terminating load impedance:

source- and to load impedance (here 50 Ohm). After the SAW filter is removed and input imped-

ance into the input matching / output matching network is calculated.

The conjugate complex value of these characteristic impedances are the input and output imped-

ances for flat passband. For more details, we refer to EPCOS application note #4.

min.

typ.

max.

Center frequency

—

868,30

—

MHz

(center frequency between 3 dB points)

Minimum insertion attenuation

α

min

868,00 ... 868,78 MHz

—

2,7

4,7

dB

Pass band (relative to

α

868,00 ... 868,60 MHz

—

1,0

3,0

dB

867,90 ... 868,70 MHz

—

1,5

6,0

dB

Relative attenuation (relative to

α

α

rel

10,00 ... 700,00 MHz

50

55

—

dB

700,00 ... 830,00 MHz

35

45

—

dB

830,00 ... 850,00 MHz

32

40

—

dB

850,00 ... 865,02 MHz

25

30

—

dB

871,00 ... 874,50 MHz

11

16

—

dB

874,50 ... 883,00 MHz

22

27

—

dB

883,00 ... 900,00 MHz

30

35

—

dB

900,00 ...1000,00 MHz

35

40

—

dB

Input:

=

||

—

216 || 2,20

—

Ω || pF

Output:

—

222 || 2,20

—

Ω || pF