10

Notes:

1. F

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.

ATF-53189 Typical Scattering and Noise Parameters at 25°C, V

Freq.

GHz

S

11

S

21

S

12

S

22

MSG/MAG

dB

Mag.

Ang.

dB

Mag.

Ang.

dB

Mag.

Ang.

Mag.

Ang.

0.1

0.776

-48.1

32.2

40.839

154.1

-38.4

0.012

65.5

0.428

-39.3

35.3

0.2

0.798

-84.7

30.7

34.138

135.6

-34.0

0.02

50.5

0.411

-71.3

32.3

0.3

0.818

-110.2

29.0

28.059

121.7

-32.0

0.025

39.4

0.396

-94.8

30.5

0.4

0.832

-128.2

27.3

23.278

111.2

-31.4

0.027

31.7

0.384

-111.6

29.4

0.5

0.835

-151.9

24.8

17.424

100.1

-31.7

0.026

23.3

0.397

-146.6

28.3

0.6

0.84

-160.3

23.4

14.811

94.8

-31.7

0.026

20.5

0.401

-153.7

27.6

0.7

0.842

-166.9

22.2

12.876

90.2

-31.4

0.027

18.6

0.403

-159

26.8

0.8

0.843

-172.2

21.1

11.394

86.3

-31.4

0.027

17.5

0.402

-163.3

26.3

0.9

0.844

-176.9

20.2

10.225

82.7

-31.1

0.028

16.5

0.4

-166.8

25.6

1.0

0.847

178.8

19.3

9.256

79.3

-31.1

0.028

15.7

0.398

-169.8

25.2

1.5

0.847

161.9

16.0

6.316

64.7

-30.2

0.031

13.4

0.389

178.4

23.1

2.0

0.847

147.6

13.7

4.818

51.4

-29.4

0.034

11

0.377

169.3

21.5

2.5

0.843

133.8

11.9

3.928

38.4

-28.6

0.037

7.6

0.367

160.5

18.9

3.0

0.841

119.8

10.6

3.369

25.2

-28.0

0.04

2.5

0.365

152.5

17.0

3.5

0.851

110

9.6

3.036

14.5

-27.5

0.042

-2.4

0.385

143.8

16.3

4.0

0.862

100.1

8.6

2.702

3.7

-27.3

0.043

-7.3

0.405

135.2

15.5

5.0

0.882

80.4

6.2

2.034

-17.9

-26.9

0.045

-17.2

0.446

117.8

13.5

6.0

0.903

60.7

2.7

1.367

-39.4

-26.4

0.048

-27

0.486

100.5

10.8

7.0

0.939

44

0.2

1.027

-59.4

-27.1

0.044

-37.6

0.544

87.1

10.5

8.0

0.956

31.8

-2.1

0.786

-77.8

-27.7

0.041

-48.7

0.607

72.6

10.0

9.0

0.94

23.2

-4.6

0.586

-94.2

-29.1

0.035

-61.5

0.669

57.9

6.7

10.0

0.948

13.6

-6.8

0.459

-110

-30.8

0.029

-79

0.721

45.5

6.1

11.0

0.942

2.6

-8.7

0.368

-126.9

-34.0

0.02

-117

0.756

35.1

4.8

12.0

0.92

-4.3

-10.3

0.305

-141.2

-38.4

0.012

-172.6

0.784

24.8

2.3

13.0

0.959

-15.4

-12.3

0.244

-161.1

-35.4

0.017

104.4

0.794

15.1

3.7

14.0

0.952

-20.1

-14.3

0.193

-171.7

-35.4

0.017

73.2

0.812

7.6

0.8

15.0

0.943

-21

-15.5

0.168

179.4

-35.9

0.016

82.9

0.847

1.3

-0.3

16.0

0.956

-24.2

-16.2

0.155

169.6

-34.0

0.02

81.5

0.852

-2.9

0.3

17.0

0.959

-31.9

-16.0

0.159

155.5

-31.4

0.027

87

0.865

-7.8

1.5

18.0

0.918

-43.5

-15.7

0.164

137.8

-28.4

0.038

78.1

0.847

-14.7

-2.0

Frequency at 4.0V/180 mA.

FREQUENCY (GHz)

018

24

68

10

12 14

16

40

30

20

10

0

-10

-20

MSG

MAG

S21

Freq

GHz

Fmin

dB

Gamma Opt

Rn/50

Ga

dB

Mag

Ang

0.5

0.9

1.0

1.5

2.0

2.4

3.0

3.5

5.0

5.8

6.0

7.0

8.0

9.0

10.0

0.65

0.76

0.79

0.86

0.94

1.00

1.10

1.17

1.41

1.53

1.56

1.72

1.87

2.03

2.18

0.394

0.417

0.423

0.465

0.509

0.545

0.600

0.645

0.777

0.840

0.855

0.920

0.970

0.993

0.997

163.6

172.4

175.3

-165.4

-147.7

-134.6

-116.7

-103.3

-70.0

-56.1

-52.9

-39.0

-27.5

-19.1

-7.5

0.11

0.09

0.08

0.08

0.06

0.08

0.16

0.28

0.35

0.41

0.42

0.51

0.97

1.88

2.54

25.82

21.83

21.71

18.70

17.63

16.45

14.90

13.53

11.35

10.31

10.38

9.79

7.91

6.11

4.56