B7844 datasheet(3/6 Pages) EPCOS

Part #	B7844

Description	Low-Loss Filter for Mobile Communication

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3

Mar 22, 2004

SAW Components

B7844

1842,5 MHz

Low-Loss Filter for Mobile Communication

Data Sheet

Characteristics

Operating temperature range:

T

= 25˚C

± 2 ˚C

Terminating source impedance:

ZS =50 Ω

Terminating load impedance:

ZL = 150 Ω || 15 nH (balanced)

min.

typ.

max.

Center frequency

fC

—

1842,5

—

MHz

Maximum insertion attenuation

α

max

1805,0

... 1880,0

MHz

—

1,9

2,1

dB

Amplitude ripple (p-p)

∆α

1805,0

... 1880,0

MHz

—

0,6

1,0

dB

Input VSWR

1805,0

... 1880,0

MHz

—

2,1

2,6

Output VSWR

1805,0

... 1880,0

MHz

—

2,0

2,6

Output amplitude balance

(|S31/S21|)

1805,0

...1880,0

MHz

-1,0

-0,5 / +0,5

1,0

dB

Output phase balance (

φ(S31)−φ(S21)+180˚)

1805,0

...1880,0

MHz

-10

-1 / +3

10

˚

Attenuation

α

0,0

... 902,0

MHz

30

50

—

dB

902,0

... 940,0

MHz

45

50

—

dB

940,0

... 1705,0

MHz

28

33

—

dB

1705,0

... 1785,0

MHz

12

16

—

dB

1920,0

... 1980,0

MHz

15

18

—

dB

1980,0

... 2030,0

MHz

24

28

—

dB

2030,0

... 2400,0

MHz

28

32

—

dB

2400,0

... 2500,0

MHz

32

37

—

dB

2500,0

... 2775,0

MHz

27

30

—

dB

2775,0

... 2880,0 MHz

40

47

—

dB

2880,0

... 3610,0

MHz

28

46

—

dB

3610,0

... 3760,0

MHz

40

46

—

dB

3760,0

... 5415,0

MHz

28

47

—

dB

5415,0

... 5640,0

MHz

35

44

—

dB

5640,0

... 6000,0

MHz

28

44

—

dB

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