3

Dec 22, 2004

SAW Components

B3780

433,92 MHz

Low-loss Filter

Data Sheet

Characteristics

Reference temperature:

Terminating source impedance:

Terminating load impedance:

istic impedance is provided by the 50 Ohm environment and a wideband matching network at input

and output. After removing the SAW filter, the conjugate complex impedance values of the input

and output matching network including the 50 Ohm environment are calculated.

For more details, we refer to EPCOS application note #4.

min.

typ.

max.

Center frequency

—

433,92

—

MHz

(center frequency between 3 dB points)

Minimum insertion attenuation

α

min

including loss in matching elements

—

2,0

2,8

dB

excluding loss in matching elements

—

1,6

2,4

dB

Pass band (relative to

α

433,645 ... 434,195 MHz

—

0,9

3,0

dB

Filter bandwidth

α

780

850

920

kHz

Relative attenuation (relative to

α

α

rel

10,00 ... 414,00 MHz

48

53

—

dB

414,00 ... 425,00 MHz

42

47

—

dB

425,00 ... 431,50 MHz

28

33

—

dB

431,50 ... 433,00 MHz

18

21

—

dB

434,92 ... 443,00 MHz

14

18

—

dB

443,00 ... 530,00 MHz

36

41

—

dB

530,00 ... 670,00 MHz

55

60

—

dB

670,00 ... 830,00 MHz

45

50

—

dB

830,00 ...1000,00 MHz

60

65

—

dB

1000,00 ...2500,00 MHz

43

48

—

dB

Input:

=

||

—

330 || 1,9

—

Ω || pF

Output:

—

330 || 1,9

—

Ω || pF