DESIGN APPLICATION NOTE --- AN022
SGA-9289 Amplifier Application Circuits
Typical Performance - 870-960 MHz Application Circuit (V
CE
=5V, I
CQ
=340mA, 25°C)
S-Parameters vs Frequency
20
Gain
P1dB, OIP3 vs Frequency
0
-6
-12
-18
30
29
45
P1dB
18
44
Isolation (dB)
P1dB (dBm)
OIP3 (dBm)
Gain (dB)
16
14
Isolation
28
27
26
25
0.87
OIP3 @ 13 dBm/tone
43
42
41
40
0.96
12
10
0.8
0.85
0.9
0.95
1
-24
-30
0.9
0.93
Frequency (GHz)
S-Parameters vs Frequency
-5
0
Frequency (GHz)
Pout, Gain, Ic vs Pin
Pout (dBm), Gain (dB)
35
30
25
20
15
10
5
-1
2
5
8
11
Gain
Ic
Pout
370
360
IRL, ORL (dB)
-10
-15
-20
-25
-30
-35
0.8
0.85
0.9
ORL
Ic (mA)
350
340
330
320
14
IRL
0.95
1
Frequency (GHz)
OIP3 vs Tone Level
43
Pin (dBm)
Noise Figure vs Frequency
5
Noise Figure (dB)
42
4
3
2
1
0
0.87
OIP3 (dBm)
41
40
39
38
6
8
10
12
14
16
0.9
0.93
0.96
Pout / Tone (dBm)
Frequency (GHz)
Freq
(GHz )
0.880
0.915
0.945
P 1d B
(dBm)
29.2
29.2
29.0
OIP3
(dBm)
41.4
41.3
40.9
Gain
(dB)
18.2
17.9
17.7
S11
(dB)
-17.6
-25.8
-25.2
S 22
(dB)
-16.4
-15.1
-14.3
NF
(dB)
2.8
2.9
2.9
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
6
http://www.stanfordmicro.com
EAN-101535 Rev A
STANFORD [ STANFORD MICRODEVICES ]
