
September 22
nd 2003
70; 7
SAW BANDPASS FILTER – GPS – RX RF
Preliminary Specification (Rev. 2)
1
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Operating Temperature range : [-30°C ; +85°C]
Electrical Parameters
Unit
Minimum
Typical
(1)
Maximum
Source Impedance (single ended)
-
50
(2)
-
Load Impedance (balanced)
-
100
(2)
-
Center Frequency fo
MHz
-
1575.42
-
Absolute Attenuation
500 kHz to 950 MHz
dB
45
50
-
950 MHz to 1475 MHz
dB
25
33
-
1475 MHz to 1525 MHz
dB
15
18
-
1625 MHz to 1675 MHz
dB
15
23
-
1675 MHz to 1900 MHz
dB
25
28
-
1900 MHz to 2600 MHz
dB
30
38
-
2600 MHz to 3155 MHz
dB
40
48
-
3155 MHz to 4000 MHz
dB
40
45
-
Maximum Insertion Loss in 1574.42 MHz-1576.42 MHz
dB
-
1.6
2.2
Amplitude Variation in 1574.42 MHz-1576.42 MHz
(3)
dB
-
0.3
1.0
Input VSWR in 1574.42 MHz-1576.42 MHz
-
1.6:1
2.0 :1
Output VSWR in 1574.42 MHz-1576.42 MHz
-
1.6:1
2.0 :1
Amplitude Imbalance
(4) in 1574.42 MHz-1576.42 MHz
dB
-
-0.28 / -0.38
±1.4
Phase Imbalance
(4) in 1574.42 MHz-1576.42 MHz
deg
-
-1.9 / -2.15
±15.0
Power capacity in 1574.42 MHz-1576.42 MHz
dBm
-
15
Package type & size
Length x Width
mm
-
2.0 x 1.4
-
Height
mm
-
0.75
0.82
Pin Out
Input
1
Output
3,4
Case Ground
2,5
To Be Grounded
2,5
Notes :
(1)
Typical values are nominal performances at room temperature
(2)
No external matching circuit is required
(3)
The amplitude variation is defined as the maximum level – minimum level over the given bandwidth
(4)
The output balance is defined as the S parameters ratio
21
31
S
where the port 1 is the input port and the ports 2 and 3 are the
balanced outputs
50
/ 100 Configuration
Input
50
Single
Output
100
Balanced
GND