B4304 Datasheet, PDF (3/8 Pages) EPCOS – SAW Rx filter Automotive telematics

SAW Components
SAW Rx filter
Data sheet
Characteristics
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
B4304
942.50 MHz
T = -20 ˚C to +75 ˚C
Z_S = 50 Ω (unbalanced)
Z_L = 150 Ω || 100 nH (balanced)
Center frequency
Maximum insertion attenuation
925.0 ... 960.0
@f_{Carrier Bd 8 RX} 927.4 ... 957.6
Amplitude ripple (p-p)
925.0 ... 960.0
MHz
MHz
MHz
min.
f_C
—
α_GSM
—
α 1)
WCDMA
—
∆α
—
typ. max.
@ 25 ˚C
942.5 —
1.5
2.7
1.5
2.0
0.9
2.1
MHz
dB
dB
dB
Error Vector Magnitude²⁾
@f_{Carrier Bd 8 RX} 927.4 ... 957.6 MHz EVM
—
3.0
4.5 %
VSWR
Input
925.0 ... 960.0 MHz
—
1.9
2.2
Output
925.0 ... 960.0 MHz
—
1.9
2.2
CMRR (|S₂₁-S₃₁| / |S₂₁+S₃₁|)
925.0 ... 960.0 MHz
20³⁾
25
— dB
Attenuation
α
DC ... 480.0 MHz
45
53
— dB
480.0 ... 835.0 MHz
33
46
— dB
835.0 ... 880.0 MHz
30
34
@f_{Carrier Bd 8 TX} 882.4 ... 912.6 MHz
α 1)
WCDMA
30
34
880.0 ... 915.0 MHz α_GSM
30
33
915.0 ... 922.0 MHz
1.0
2.5
— dB
— dB
— dB
— dB
980.0 ... 982.0 MHz
20
30
— dB
982.0 ... 1000.0 MHz
23
30
— dB
1850.0 ... 1920.0 MHz
40
47
— dB
2775.0 ... 2880.0 MHz
36
41
— dB
3700.0 ... 3840.0 MHz
38
50
— dB
1000.0 ... 1500.0 MHz
23
32
— dB
1500.0 ... 6000.0 MHz
23
34
— dB
1) _{Attenuation of WCDMA signal (“Powertransferfunction”). Please refer to annotation on page (4).}
2) _{Error Vector Magnitude (EVM) based on definition given in 3GPP TS 25.141.}
3) _{A CMRR of 19.6 dB corresponds to a phase imbalance of +10˚ together with an amplitude im-}
balance of +1.0 dB
Please read cautions and warnings and
important notes at the end of this document.
3 March 23, 2011