ASL21X
Medium Gain, Low Noise GPS Amplifier
Frequency (MHz)
Magnitude S21 (dB)
1575
19.5
-12
-12
0.7
-20
-6
5
3
APPLICATION CIRCUIT
GPS
1575 MHz
+3 V / 5 mA
Without Power ON/OFF
Function
1)
Magnitude S11 (dB)
Magnitude S22 (dB)
Noise Figure (dB)
Input IP3 (dBm)
1)
Output P1dB( dBm)
Supply Current (mA)
Supply Voltage (V)
IIP3 is measured with two tones at an input power of -40 dBm/tone
separated by 1MHz
Schematic
L1=6.8 nH
RF IN
ASL21X
NC
Vsupply
C1=0.5 pF
RF OUT
Board Layout (FR4, 20x20 mm , 0.8T)
2
R1= 330
W
L2=8.2 nH
L3=100 nH
C2=0.1 uF
S-parameters & K-factor
25
0
20
-5
Gain (dB)
S11 (dB)
15
-10
10
-15
5
-20
0
1000
1200
1400
1600
1800
2000
-25
1000
1200
1400
1600
1800
2000
Frequency (MHz)
0
5
Frequency (MHz)
-5
4
Stability Factor
-10
3
S22 (dB)
-15
2
-20
1
-25
1000
0
1200
1400
1600
1800
2000
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
Frequency (MHz)
5/14
ASB Inc.
·
sales@asb.co.kr
·
Tel: +82-42-528-7223
July 2012
ASB [ ADVANCED SEMICONDUCTOR BUSINESS INC. ]
