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

August 2004

ECP052

½ Watt, High Linearity InGaP HBT Amplifier

Product Information

The Communications Edge

TM

Typical Device Data

0

0.2

0.4

0.6

0.8

1

Frequency (GHz)

Gain / Maximum Stable Gain

0

5

10

15

20

25

30

35

40

DB(|S[2,1]|)

DB(GMax)

10.0

5.

0

3.

0

4.

0

-0

.2

-

0

.

4

S11

Swp Max

1GHz

Swp Min

0.05GHz

10.0

5.

0

3.

0

4.

0

-0

.2

-

0

.

4

S22

Swp Max

1GHz

Swp Min

0.05GHz

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 – 1000 MHz, with markers placed at 0.2 – 1 GHz in 0.1 GHz increments.

Freq (MHz)

S11 (dB)

S21 (dB)

S21 (ang)

S12 (dB)

S12 (ang)

S22 (dB)

S22 (ang)

50

-2.72

24.16

133.35

-36.72

29.75

-2.23

-102.97

100

-2.25

20.33

124.95

-35.31

13.96

-3.08

-137.03

200

-2.31

17.23

119.37

-34.90

2.32

-3.32

-159.63

400

-3.08

15.63

98.28

-33.62

-16.36

-3.48

-172.70

600

-5.79

15.58

69.70

-32.10

-37.73

-2.87

-176.25

800

-19.72

15.22

25.60

-31.19

-78.95

-2.27

-179.74

1000

-6.06

11.91

-22.67

-33.26

-129.67

-1.40

173.15

1200

-2.34

6.92

-56.59

-38.16

176.95

-1.49

165.12

1400

-1.28

2.28

-78.59

-41.14

132.98

-1.96

160.84

1600

-0.91

-1.17

-96.56

-42.62

113.65

-2.53

160.80

1800

-0.71

-4.40

-112.20

-40.78

98.57

-2.92

157.57

2000

-0.60

-6.78

-128.36

-40.27

74.44

-3.29

155.77

2200

-0.58

-8.70

-146.80

-37.79

53.03

-3.72

155.24

2400

-0.55

-9.87

-169.80

-39.90

53.88

-3.96

158.19

2600

-0.51

-10.59

160.74

-37.66

41.18

-3.25

160.80

2800

-0.51

-11.66

128.82

-35.78

31.88

-1.97

158.05

3000

-0.54

-13.08

95.01

-35.88

27.61

-1.09

149.64

Application Circuit PC Board Layout

Circuit Board Material: .014” Getek, 4 - layer, 1 oz copper, Microstrip line details: width = .026”, spacing = .026”

The silk screen markers ‘A’, ‘B’, ‘C’, etc. and ‘1’, ‘2’, ‘3’, etc. are used as placemarkers for the input and output tuning

Shunt capacitors – C8 and C9. The markers and vias are spaced in .050” increments.