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SAW Components
B3932
SAW filter
434.17 MHz
Data sheet
Characteristics
Temperature range for specification:
T
= –40 ?C to +110 ?C
Terminating source impedance:
Terminating load impedance:
Z S =
Z L =
50 ? and matching network
50 ? and matching network
min.
typ.
@ 25 ?C
max.
Center frequency
f C
—
434.17
—
MHz
Minimum insertion attenuation
α min
incl. loss in matching elements (Q L = 48)
—
2.4
3.0
dB
excl. loss in matching elements
—
1.6
2.2
dB
Pass band (relative to α min )
433.80 ... 434.54 MHz
433.76 ... 434.54 MHz
—
—
1.5
2.0
2.5
3.5
dB
dB
Relative attenuation (relative to α min )
α rel
10.00 ... 360.00 MHz
360.00 ... 415.00 MHz
415.00 ... 425.00 MHz
425.00 ... 431.00 MHz
431.00 ... 432.50 MHz
432.50 ... 433.20 MHz
435.10 ... 435.50 MHz
435.50 ... 437.00 MHz
437.00 ... 445.00 MHz
445.00 ... 460.00 MHz
460.00 ... 550.00 MHz
550.00 ... 1000.00 MHz
1000.00 ... 2500.00 MHz
55
50
45
33
20
10
10
20
21
40
50
60
50
60
56
53
40
24
13
14
25
26
49
60
65
55
—
—
—
—
—
—
—
—
—
—
—
—
—
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
Impedance for pass band matching 1)
Input:
Z IN
= R IN
|| C IN
—
570 || 2.0
—
? || pF
Output: Z OUT = R OUT || C OUT
—
540 || 2.0
—
? || pF
1)
Impedance for passband matching bases on an ideal, perfect matching of the SAW filter to source- and to load
impedance (here 50 Ohm). After removal of the SAW filter the input impedance of the input and output match-
ing network is calculated. The conjugate complex value of these characteristic impedances are the input and
output impedances for flat passband. For more details we refer to EPCOS application note #18.
Please read cautions and warnings and
important notes at the end of this document.
3
November 06, 2013
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