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www.ASB.co.kr Mar.. 2004
1) S11 & S22 can be improved, at a specific frequency, by moving
an input shunt capacitor (C2) along an input transmission line.
2) OIP3 is measured with two tones at an output power of +14 dBm/tone
separated by 1 MHz.
50
Ω
C2=1.8 pF
C1= 1.0 pF
R2=1.2 k
Ω
L2= 6.8 nH
C3=100 pF
Vs=8 V
RF IN
RF OUT
4.5 mm
C6=
100 pF
C7=
1000 pF
C8=
1
µF
L3=33 nH
50
Ω
4.5 mm
C5=1
µF
L1= 100 nH
ASG402
C4=2.2 pF
R3=300
Ω
R1=7.5
Ω
Application Circuit: 2000 MHz
Typical Performance
ASG402
Frequency
2000 MHz
Magnitude S21
9 dB
Magnitude S11
1)
-15dB
Magnitude S22
1)
-14 dB
Output P1dB
28 dBm
Output IP3
2)
44 dBm
Noise Figure
5.0 dB
Device Operating Voltage
6 V
Current
275 mA
Supply Voltage
8 V
Schematic
S-parameters
Gain vs. Temperature
1700
1800
1900
2000
2100
2200
2300
-50
-40
-30
-20
-10
0
+ 85
oC
+ 25
oC
- 40
oC
Frequency ( MHz )
1700
1800
1900
2000
2100
2200
2300
-30
-25
-20
-15
-10
-5
+ 85
oC
+ 25
oC
- 40
oC
Frequency ( MHz )
Board Layout (FR4, 40x40 mm
2, 0.8T)
-60
-40
-20
0
20
40
60
80
100
5
6
7
8
9
10
11
12
13
Frequency = 2GHz
Temperature (
oC )
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