13

ATF-35143 Typical Noise Parameters

Freq.

Γ

opt

GHz

dB

Mag.

Ang.

-

dB

0.5

0.10

0.90

3.5

0.22

20.7

0.9

0.14

0.85

12.5

0.21

19.7

1.0

0.16

0.83

14.7

0.20

19.5

1.5

0.21

0.77

25.9

0.18

18.4

1.8

0.25

0.73

32.6

0.17

17.8

2.0

0.28

0.70

37.1

0.17

17.5

2.5

0.33

0.64

49.1

0.15

16.7

3.0

0.38

0.58

62.0

0.14

16.0

4.0

0.49

0.48

90.3

0.10

14.7

5.0

0.62

0.40

121.2

0.07

13.5

6.0

0.74

0.35

154.0

0.05

12.5

7.0

0.87

0.32

-172.2

0.06

11.5

8.0

0.99

0.31

-138.0

0.09

10.7

9.0

1.11

0.34

-104.2

0.15

10.0

10.0

1.24

0.39

-71.6

0.26

9.5

FREQUENCY (GHz)

Frequency at 4 V, 30 mA.

020

510

15

MSG

MAG

30

25

20

15

10

5

0

-5

Notes:

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

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 connecting 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.

Freq.

MSG/MAG

GHz

Mag.

Ang.

dB

Mag.

Ang.

dB

Mag.

Ang.

Mag.

Ang.

dB

0.50

0.99

-21.11

18.54

8.45

163.20

-33.98

0.020

77.63

0.56

-14.66

26.26

0.75

0.96

-32.57

18.38

8.30

153.72

-30.75

0.029

70.15

0.54

-20.35

24.55

1.00

0.94

-42.70

18.13

8.07

145.56

-28.64

0.037

64.68

0.53

-26.91

23.38

1.50

0.88

-61.55

17.53

7.53

130.19

-25.68

0.052

53.94

0.50

-39.45

21.61

1.75

0.85

-70.46

17.20

7.24

123.00

-24.58

0.059

49.29

0.48

-45.29

20.90

2.00

0.82

-79.07

16.84

6.95

116.04

-23.88

0.064

44.64

0.46

-50.94

20.36

2.50

0.76

-95.78

16.14

6.41

102.91

-22.62

0.074

36.30

0.43

-61.54

19.38

3.00

0.71

-112.14

15.43

5.91

90.63

-21.72

0.082

28.32

0.40

-71.17

18.58

4.00

0.62

-144.46

14.04

5.03

68.03

-20.72

0.092

13.98

0.34

-87.95

17.38

5.00

0.57

-174.93

12.76

4.34

47.35

-20.00

0.100

1.12

0.28

-104.23

16.38

6.00

0.55

157.13

11.61

3.81

28.07

-19.49

0.106

-11.07

0.22

-120.69

15.55

7.00

0.55

129.56

10.54

3.37

9.35

-19.25

0.109

-23.07

0.17

-139.29

14.19

8.00

0.57

104.96

9.55

3.00

-8.62

-18.94

0.113

-33.33

0.13

-160.54

12.47

9.00

0.60

82.47

8.53

2.67

-26.19

-18.79

0.115

-44.34

0.09

169.67

11.33

10.00

0.64

63.23

7.64

2.41

-43.13

-18.49

0.119

-54.44

0.07

128.74

10.70

11.00

0.68

45.01

6.74

2.17

-60.63

-18.27

0.122

-65.68

0.09

78.47

10.10

12.00

0.72

26.69

5.79

1.95

-78.09

-18.13

0.124

-77.35

0.15

47.96

9.40

13.00

0.74

8.00

4.71

1.72

-95.00

-18.27

0.122

-88.59

0.22

28.53

8.47

14.00

0.77

-5.46

3.64

1.52

-110.50

-18.42

0.120

-98.13

0.28

8.38

7.69

15.00

0.82

-16.18

2.65

1.36

-126.04

-18.49

0.119

-108.03

0.34

-8.46

7.76

16.00

0.82

-28.39

1.62

1.21

-142.14

-18.49

0.119

-118.41

0.40

-22.93

6.75

17.00

0.85

-40.51

0.64

1.08

-156.61

-18.49

0.119

-129.54

0.46

-32.29

6.53

18.00

0.86

-56.36

-0.44

0.95

-172.55

-18.86

0.114

-140.19

0.52

-43.97

6.00

88759/05-4.PM6.5J

2001.04.26, 9:16 AM

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