DESIGN APPLICATION NOTE --- AN022
SGA-9289 Amplifier Application Circuits
Typical Performance - 1930-1990 MHz Application Circuit (V
CE
=3V, I
CQ
=315mA, 25°C)
S-Parameters vs Frequency
15
13
0
26.5
P1dB, OIP3 vs Frequency
42
P1dB
P1dB (dBm)
-6
Gain
25.5
24.5
23.5
22.5
21.5
1.93
41
Isolation (dB)
OIP3 (dBm)
Gain (dB)
11
9
7
5
1.8
-12
-18
-24
-30
40
OIP3 @ 10 dBm/tone
Isolation
39
38
37
1.99
1.9
2.0
2.1
1.95
1.97
Frequency (GHz)
S-Parameters vs Frequency
-5
Frequency (GHz)
Pout, Gain, Ic vs Pin
Pout (dBm), Gain (dB)
30
25
20
Ic
Pout
0
340
330
IRL, ORL (dB)
-10
-15
-20
-25
-30
-35
1.8
ORL
IRL
Ic (mA)
320
310
Gain
15
10
5
300
290
1.9
2.0
2.1
0
5
10
15
20
Frequency (GHz)
OIP3 vs Tone Level
41
Pin (dBm)
Noise Figure vs Frequency
5
Noise Figure (dB)
6
8
10
12
14
16
40
4
3
2
1
0
1.93
OIP3 (dBm)
39
38
37
36
1.95
1.97
1.99
Pout / Tone (dBm)
Frequency (GHz)
Freq
(GHz )
1.93
1.96
1.99
P 1d B
(dBm)
25.9
26.0
26.0
OIP3
(dBm)
39.3
39.3
38.4
Gain
(dB)
11.1
11.0
10.9
S11
(dB)
-16.9
-20.5
-27.4
S 22
(dB)
-15.7
-15.5
-15.9
NF
(dB)
2.8
2.9
2.9
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
8
http://www.stanfordmicro.com
EAN-101535 Rev A
STANFORD [ STANFORD MICRODEVICES ]
