Philips Semiconductors
Product specification
SA5205A
Wide-band high-frequency amplifier
1997 Nov 07
11
6
a. Input VSWR vs Frequency
b. Output VSWR vs Frequency
INPUT VSWR
OUTPUT VSWR
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
FREQUENCY—MHz
TA = 25
o
C
VCC = 6V
ZO = 75
Ω
ZO = 50
Ω
.
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
FREQUENCY—MHz
Tamb = 25
o
C
VCC = 6V
ZO = 75
Ω
ZO = 50
Ω
2.0
8
101
2
4
102
2
4
6 8 103
6
8
101
2
4
102
2
4
6 8 103
SR00235
Figure 21. Input/Output VSWR vs Frequency
ADDITIONAL READING ON SCATTERING
PARAMETERS
For more information regarding S-parameters, please refer to
High-Frequency Amplifiers by Ralph S. Carson of the University of
Missouri, Rolla, Copyright 1985; published by John Wiley & Sons,
Inc.
“S-Parameter Techniques for Faster, More Accurate Network Design”,
HP App Note 95-1, Richard W. Anderson, 1967, HP Journal.
“S-Parameter Design”, HP App Note 154, 1972.
-60
-50
-40
-30
-20
-10
0
+10
+20
+30
+40
+30
+20
+10
0
-10
-20
-30
-40
2ND ORDER
INTERCEPT
POINT
2ND ORDER
RESPONSE
3RD ORDER
RESPONSE
INPUT LEVEL dBm
THIRD ORDER
INTERCEPT POINT
1dB
COMPRESSION POINT
FUNDAMENTAL
RESPONSE
OUTPUT LEVEL
dBm
SR00236
Figure 22.
