b39431-b3740-h110 EPCOS AG, b39431-b3740-h110 Datasheet - Page 3

• Manufacturer Part Number: b39431-b3740-h110
• Description: Saw Components Low-loss Filter
• Manufacturer: EPCOS AG

Data Sheet
Characteristics
Reference temperature:
Terminating source impedance:
Terminating load impedance:
Center frequency
(center frequency between 3 dB points)
Minimum insertion attenuation
including loss in matching elements (Q
Pass band (relative to
Relative attenuation (relative to
Impedance for pass band matching
1)
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.
SAW Components
Low-loss Filter
Impedance for passband matching bases on an ideal, perfect matching of the SAW filter to
Input:
Output: Z
1500,00 ...2500,00 MHz
433,74 ... 434,10 MHz
414,00 ... 423,50 MHz
423,50 ... 431,52 MHz
431,52 ... 432,90 MHz
432,90 ... 433,10 MHz
434,92 ... 444,00 MHz
444,00 ... 810,00 MHz
810,00 ...1500,00 MHz
min
Z
10,00 ... 414,00 MHz
IN
OUT
)
= R
= R
min
IN
OUT
1)
)
L
|| C
|| C
= 47)
IN
OUT
T
Z
Z
A
S
L
3
= –45 ... +95˚C
= 50
= 50
f
C
min
rel
Nov 29, 2005
and matching network
and matching network
min.
50
45
35
20
15
15
42
55
50
—
—
—
—
—
390 || 2,1
390 || 2,1
433,92
typ.
2,5
0,8
58
53
40
24
24
19
50
65
60
max.
3,5
3,0
—
—
—
—
—
—
—
—
—
—
—
—
433,92 MHz
B3740
MHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
|| pF
|| pF