3

May 09, 2001

SAW Components

B3571

868,60 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

—

868,69

—

MHz

(center frequency between 3 dB points)

Minimum insertion attenuation

α

min

868,00 ... 869,38 MHz

—

3,1

4,6

dB

Pass band (relative to

α

868,00 ... 869,38 MHz

—

1,5

3,0

dB

867,92 ... 869,46 MHz

—

2,0

6,0

dB

Relative attenuation (relative to

α

α

rel

10,00 ... 700,00 MHz

50

55

—

dB

700,00 ... 830,00 MHz

33

38

—

dB

830,00 ... 858,00 MHz

30

35

—

dB

858,00 ... 866,40 MHz

20

25

—

dB

871,00 ... 880,00 MHz

17

22

—

dB

880,00 ... 910,00 MHz

30

35

—

dB

910,00 ...1000,00 MHz

33

38

—

dB

Input:

=

||

—

226 || 2,30

—

Ω || pF

Output:

—

222 || 2,20

—

Ω || pF

—

–0,03

—

Frequency inversion point

—25

—

°C