10

ATF-34143 Typical Noise Parameters

Freq.



opt

GHz

dB

Mag.

Ang.

-

dB

0.5

0.11

0.84

15

0.14

24.5

0.9

0.14

0.78

30

0.12

20.7

1.0

0.15

0.77

34

0.12

20.2

1.5

0.20

0.69

53

0.10

18.5

1.8

0.23

0.66

62

0.10

17.7

2.0

0.26

0.62

72

0.09

17.2

2.5

0.33

0.55

91

0.07

16.3

3.0

0.39

0.50

111

0.05

15.4

4.0

0.53

0.43

149

0.03

13.7

5.0

0.67

0.39

-173

0.04

12.3

6.0

0.81

0.39

-137

0.07

11.1

7.0

0.96

0.42

-104

0.14

10.0

8.0

1.10

0.47

-76

0.26

9.2

9.0

1.25

0.54

-53

0.41

8.6

10.0

1.39

0.62

-37

0.60

8.2

Freq.

MSG/MAG

GHz

Mag.

Ang.

dB

Mag.

Ang.

dB

Mag.

Ang.

Mag.

Ang.

dB

0.5

0.95

-41

21.91

12.454

150

-31.06

0.028

68

0.29

-41

26.48

0.8

0.89

-65

21.33

11.654

134

-28.18

0.039

57

0.24

-67

24.75

1.0

0.85

-83

20.46

10.549

123

-26.56

0.047

49

0.23

-84

23.51

1.5

0.78

-111

18.74

8.646

103

-24.44

0.060

38

0.21

-114

21.59

1.8

0.75

-122

17.92

7.873

95

-23.74

0.065

33

0.21

-125

20.83

2.0

0.73

-133

17.16

7.207

87

-23.22

0.069

29

0.20

-136

20.19

2.5

0.69

-151

15.78

6.149

73

-22.38

0.076

22

0.19

-155

19.08

3.0

0.67

-168

14.56

5.345

60

-21.62

0.083

15

0.19

-171

18.09

4.0

0.64

161

12.53

4.232

37

-20.54

0.094

3

0.18

162

16.53

5.0

0.63

134

10.88

3.501

16

-19.58

0.105

-10

0.19

135

15.23

6.0

0.64

111

9.49

2.983

-5

-18.79

0.115

-24

0.21

109

12.89

7.0

0.66

86

8.15

2.557

-26

-18.27

0.122

-38

0.24

84

11.22

8.0

0.69

65

6.92

2.217

-46

-17.79

0.129

-51

0.28

62

10.21

9.0

0.73

46

5.72

1.932

-65

-17.46

0.134

-65

0.33

42

9.36

10.0

0.76

28

4.73

1.723

-84

-16.95

0.142

-79

0.38

25

8.94

11.0

0.78

9

3.70

1.531

-104

-16.71

0.146

-94

0.42

7

8.23

12.0

0.81

-11

2.57

1.344

-124

-16.71

0.146

-111

0.47

-12

7.56

13.0

0.84

-30

1.20

1.148

-143

-17.02

0.141

-126

0.52

-29

6.94

14.0

0.86

-44

-0.12

0.986

-159

-17.46

0.134

-139

0.58

-43

6.37

15.0

0.87

-56

-1.21

0.870

-175

-17.59

0.132

-150

0.62

-58

5.78

16.0

0.86

-72

-2.21

0.775

168

-17.59

0.132

-163

0.65

-71

4.60

17.0

0.86

-88

-3.35

0.680

151

-17.65

0.131

-178

0.68

-86

3.79

18.0

0.89

-101.99

-4.81

0.575

135

-18.42

0.120

169

0.71

-104

3.33

FREQUENCY (GHz)

at 4 V, 60 mA.

04

2

8

14

16

10

12

618

30

25

20

15

10

5

0

-5

-10

MSG

MAG

Notes:

1. Fmin values at 2 GHz and higher are based on measurements while the Fmins below 2 GHz have been extrapolated. The Fmin values are based

on a set of 16 noise figure measurements made at 16 different impedances using an ATN NP5 test system. From these measurements a true Fmin

is calculated. Refer to the noise parameter application section for more information.

2. S and noise parameters are measured on a microstrip line made on 0.025 inch thick alumina carrier. The input reference plane is at the end of the

gate lead. The output reference plane is at the end of the drain lead. The parameters include the effect of four plated through via holes connect-

ing source landing pads on top of the test carrier to the microstrip ground plane on the bottom side of the carrier. Two 0.020 inch diameter via

holes are placed within 0.010 inch from each source lead contact point, one via on each side of that point.