Philips Semiconductors

Product specification

NE/SA/SE5205A

Wide-band high-frequency amplifier

1992 Feb 24

11

6

a. Input VSWR vs Frequency

b. Output VSWR vs Frequency

1.0

1.1

1.2

1.3

1.4

1.5

1.6

1.7

1.8

1.9

FREQUENCY—MHz

TA = 25

VCC = 6V

ZO = 75Ω

ZO = 50Ω

.

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

VCC = 6V

ZO = 75Ω

ZO = 50Ω

2.0

8

1012

4

1022

4

6 8 1036 8

1012

4

1022

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

SR00236

Figure 22.