Specifications and information are subject to change without notice

WJ Communications, Inc

Phone 1-800-WJ1-4401 FAX: 408-577-6621

e-mail: sales@wj.com

Web site: www.wj.com

December 2004

EC1089

¼ Watt, High Linearity InGaP HBT Amplifier

Product Information

Typical Device Data

0

0.5

1

1.5

2

2.5

Frequency (GHz)

Gain / Maximum Stable Gain

0

5

10

15

20

25

30

DB(|S[2,1]|)

DB(GMax)

10.0

5.0

3.

0

4.

0

-0.

2

-0

.4

S11

Swp Max

6GHz

Swp Min

0.1GHz

10.0

5.0

3.

0

4.

0

-0.

2

-0

.4

S22

Swp Max

6GHz

Swp Min

0.1GHz

Notes:

The gain for the unmatched device in 50 ohm system is shown as the trace in black color. For a tuned circuit for a particular frequency,

it is expected that actual gain will be higher, up to the maximum stable gain. The maximum stable gain is shown in the dashed red line.

The return loss plots are shown from 50 – 3000 MHz, with markers placed at 0.5 – 3.0 GHz in 0.5 GHz increments.

Freq (MHz)

S11 (dB)

S11 (ang)

S21 (dB)

S21 (ang)

S12 (dB)

S12 (ang)

S22 (dB)

S22 (ang)

50

-3.61

-169.14

23.08

149.67

-30.46

17.14

-7.74

-128.38

100

-3.31

-173.35

21.93

148.90

-29.57

14.05

-7.80

-143.29

200

-2.62

179.12

19.02

146.43

-27.97

9.40

-6.40

-169.43

400

-2.62

173.23

17.74

136.11

-27.96

10.86

-6.33

-179.95

600

-2.54

168.30

16.69

123.77

-27.96

10.86

-6.09

173.78

800

-2.39

163.31

15.62

111.53

-27.96

10.62

-5.86

168.37

1000

-2.27

158.06

14.57

101.13

-26.02

9.88

-5.68

163.12

1200

-2.21

152.89

13.55

91.40

-26.02

8.87

-5.58

157.73

1400

-2.16

147.55

12.54

82.69

-26.02

7.57

-5.37

152.46

1600

-2.05

142.54

11.65

74.35

-26.02

5.95

-5.20

147.09

1800

-1.99

137.85

10.70

66.99

-25.08

4.22

-5.20

141.71

2000

-1.84

133.47

9.91

59.96

-24.44

2.37

-5.05

136.43

2200

-1.68

129.41

9.13

53.84

-24.44

0.24

-5.01

131.29

2400

-1.46

125.20

8.46

47.68

-24.44

-2.39

-4.89

126.16

2600

-1.33

120.48

7.85

41.30

-23.27

-5.53

-4.88

121.19

2800

-1.20

115.03

7.22

34.74

-23.10

-9.13

-4.73

116.28

3000

-1.17

109.05

6.62

27.78

-23.10

-12.86

-4.66

111.40

Device S-parameters are available for download off of the website at: http://www.wj.com

Application Circuit PC Board Layout

Circuit Board Material: .014” Getek, 4 layers (other layers added for rigidity), .062” total thickness, 1 oz copper

Microstrip line details: width = .026”, spacing = .026”