b39871-b3572-u310 EPCOS AG, b39871-b3572-u310 Datasheet - Page 4

• Manufacturer Part Number: b39871-b3572-u310
• Description: 868,95 Mhz 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
Pass band (relative to
Relative attenuation (relative to
Impedance for pass band matching
2)
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
868,70 ... 869,20 MHz
868,70 ... 869,20 MHz
868,60 ... 869,30 MHz
700,00 ... 830,00 MHz
830,00 ... 850,60 MHz
850,60 ... 865,62 MHz
871,60 ... 875,10 MHz
875,10 ... 883,60 MHz
883,60 ... 900,00 MHz
900,00 ...1000,00 MHz
min
Z
10,00 ... 700,00 MHz
IN
OUT
)
= R
= R
min
IN
OUT
2)
)
|| C
|| C
IN
OUT
T
Z
Z
A
S
L
4
= –45 ... 90 ˚C
= 50
= 50
f
C
min
rel
Mar 10, 2004
and matching network
and matching network
min.
50
35
32
25
11
22
30
35
—
—
—
—
—
—
200 || 2,40
200 || 2,40
868,95
typ.
2,7
1,0
1,5
55
45
40
30
16
27
35
40
max.
4,7
3,0
6,0
—
—
—
—
—
—
—
—
—
—
—
868,95 MHz
B3572
MHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
|| pF
|| pF