AST163_17 Datasheet, PDF (3/9 Pages) Advanced Semiconductor Business Inc. – High Gain, Low Noise Amplifier

APPLICATION CIRCUIT
GPS
1575 MHz
+3 V
Schematic
AST163
High Gain, Low Noise Amplifier
Frequency (MHz)
1575
1575²⁾
Magnitude S21 (dB)
13.5
14
Magnitude S11 (dB)
-10
-12
Magnitude S22 (dB)
-10
-14
Output P1dB (dBm)
10
10
Output IP3¹⁾ (dBm)
16
18
Noise Figure (dB)
1.10
0.95
Supply Voltage (V)
+3
+3
Current (mA)
3.7
6.0
1) OIP3 is measured with two tones at an output power of -5 dBm/tone
separated by 1MHz.
2) It is the test result when the R1 value is 1.1 kohm. A user can easily increase
an operating current by choosing R1 value.
Board Layout (FR4, 15.3x12 mm², 0.8T)
Top
Bottom
Note: 1) The length of the strip line P1 is given as below at
the PCB with Er = 4.5 and T = 0.8 mm.
P1 Length: 3.5 mm, Width: 0.3 mm
2) Gain and S11 are in trade-off and varied with the length of P1
S-parameters & Noise Figure
20
5
15
0
-40^oc
25^oc
85^oc
-5
10
-10
-40^oc
5
25^oc
85^oc
-15
0
1400
0
1450
1500
1550 1600 1650
Frequency (MHz)
1700
1750
1800
-20
1400
5
1450
1500
1550 1600 1650
Frequency (MHz)
1700
1750
1800
-5
4
-10
3
-15
-40^oc
2
25^oc
85^oc
-20
1
-25
1400
1450
1500
1550 1600 1650
Frequency (MHz)
1700
1750
1800
0
0
500
1000
1500
2000
2500
3000
3500
Frequency (MHz)
3/9
ASB Inc.  [e-mail]  Tel: [phone]
February 2017