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B7923 Datasheet(PDF) 5 Page - EPCOS

Part # B7923
Description  SAW Duplexer Cellular / WCDMA Band V
PDF  16 Pages
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Manufacturer  EPCOS [EPCOS]
Direct Link  http://www.epcos.com
Logo EPCOS - EPCOS

B7923 Datasheet(HTML) 5 Page - EPCOS

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5
January 26, 2011
B7923
836.50 / 881.50 MHz
SAW Components
SAW Duplexer
Data Sheet
Please read cautions and warnings and
important notes at the end of this document.
Characteristics
Temperature range for specification:
T
= –30 ˚C to +85 ˚C
Antenna terminating impedance:
ZANT=
50
Ω ll 11 nH4)
RX terminating impedance:
ZRX = 100 Ω + 2 nH (balanced)4)
TX terminating impedance:
ZTX =
50
Ω
Characteristics ANT - RX
min.
typ.
@ 25 ˚C
max.
Center frequency
fC
881.5
MHz
Maximum insertion attenuation
α
max
869.0
...
894.0
MHz
1.8
2.7
dB
@fCarrier 871.4 ...
891.6
MHz
α
WCDMA
1)
1) Attenuation of WCDMA signal (“Powertransferfunction”). Please refer to annotation on page (8).
1.8
2.42)
2) Temperature range for this parameter is -20oC to +85oC.
dB
Amplitude ripple (p-p)
∆α
869.0
...
894.0
MHz
0.7
1.5
dB
@fCarrier 871.4 ...
891.6
MHz
α
WCDMA
1)
0.5
1.02)
dB
Input VSWR (ANT port)
869.0
...
894.0
MHz
1.7
2.2
Output VSWR (RX port)
869.0
...
894.0
MHz
1.9
2.3
Common mode rejection ratio
869.0
...
894.0
MHz CMRR
233)
3) A combination of 10o phase balance and 1 dB amplitude balance corresponds to 19.6 dB CMRR
35
a4)
4) Please refer to recommended matching circuit on page (9).
dB



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