D1007UK

Prelim. 6/00

Website: http://www.semelab.co.uk

Figure 1

Power Output and efficiency vs. Power Input.

Figure 2

Power Output and Gain vs. Power Input.

Figure 3

IMD Vs. Output Power.

OPTIMUM SOURCE AND LOAD IMPEDANCE

Frequency

ZS

ZL

MHz

W

W

W

W

W

W

W

W

400MHZ

10.7 - j35.4

13.8 - j22.2

0

2

4

6

8

10

12

P in W

0

10

20

30

40

50

60

P out

W

20

30

40

50

60

70

80

D r ai n E f f i ci en cy

%

Po u t

D r ai n E f f i ci en cy

f

= 4 0 0 M H z

Idq = 0 .4 A

V ds = 28V

0

2

4

6

8

10

12

P in W

0

10

20

30

40

50

60

P out

W

6

8

10

12

14

16

18

Ga i n

dB

Po u t

Ga i n

f

= 4 0 0 M H z

Idq = 0 .4 A

V ds = 28V

0

10

20

30

40

50

60

P out W PEP

- 60

- 50

- 40

- 30

- 20

- 10

0

IM D 3

dBc

IM D 3

f 1

= 4 0 0 M H z

f 2

= 4 0 0 . 1 M H z

Idq = 0 .4 A

V ds = 28V

!Freq

S11

S21

S12

S22

!MHz

mag

ang

mag

ang

mag

ang

mag

ang

100

0.767

-135

22.646

88

0.0155

9

0.531

-103

200

0.813

-153

10.116

57

0.0099

4

0.692

-131

300

0.841

-161

5.623

39

0.0076

49

0.794

-143

400

0.861

-169

3.548

25

79

0.841

-151

500

0.882

-175

20

78

0.875

-156

600

0.902

180

2.093

14

0.0285

78

-161

700

0.923

174

1.365

9

0.0376

77

0.944

-166

800

0.912

170

1.096

2

0.0457

66

0.944

-170

900

0.923

164

0.902

-3

0.0484

66

0.933

-176

1000

0.923

161

0.724

-4

0.0596

64

0.944

-177

#

MHZ

S MA R 50

Typical S Parameters