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

Page 3 of 4

May 2007

WJA1500

+5V Active-Bias InGaP HBT Gain Block

Application Circuit

Recommended Component Values

(1)

Ref. Name

Value / Type

Size

L1

470 nH wire wound inductor

1008

C1, C2

1000 pF chip capacitor

0603

C3

0.018

μF chip capacitor

0603

R1, R2, R4

0

0603

C4, C5, C6,

R3, R5, R6,

R7, R8

1. The listed values are contained on the evaluation board to achieve optimal broadband performance

2. Place holders for the 0

Ω resistors and “Do Not Place” references are not needed for final design.

Typical Device Data

Freq (MHz)

S11 (dB)

S11 (ang)

S21 (dB)

S21 (ang)

S12 (dB)

S12 (ang)

S22 (dB)

S22 (ang)

10

-14.15

-52.86

22.00

170.08

-25.19

15.22

-9.71

-31.55

50

-18.32

-126.19

20.13

169.50

-23.41

5.94

-17.39

-60.21

100

-18.70

-143.66

19.85

168.15

-23.19

3.89

-18.34

-70.20

150

-18.29

-147.03

19.75

165.11

-23.17

3.40

-17.53

-77.53

200

-17.58

-147.87

19.69

161.73

-23.09

3.09

-16.26

-85.04

250

-16.88

-148.53

19.62

157.86

-22.95

3.15

-15.03

-91.71

300

-16.17

-148.90

19.51

153.85

-22.87

3.10

-13.88

-97.78

350

-15.51

-150.67

19.43

150.10

-22.76

2.73

-12.81

-102.88

400

-14.99

-151.56

19.29

146.51

-22.67

2.88

-11.81

-106.53

450

-14.37

-154.33

19.21

142.46

-22.49

2.70

-10.85

-111.66

500

-13.86

-155.73

19.09

138.21

-22.36

1.90

-10.11

-116.08

550

-13.41

-160.18

18.93

134.40

-22.28

0.80

-9.39

-120.61

600

-12.82

-161.87

18.85

131.46

-22.14

1.38

-8.85

-123.18

650

-12.34

-165.23

18.73

127.60

-22.06

0.50

-8.24

-126.93

700

-11.82

-168.77

18.68

123.23

-21.80

-0.24

-7.70

-130.47

750

-11.51

-172.69

18.47

119.55

-21.74

-1.53

-7.39

-134.46

800

-11.00

-175.98

18.29

115.92

-21.70

-2.95

-7.05

-138.38

850

-10.68

-178.16

18.13

112.76

-21.66

-3.21

-6.80

-141.31

900

-10.23

178.91

17.98

109.49

-21.54

-4.35

-6.54

-143.85

950

-10.03

175.93

17.80

106.27

-21.44

-5.24

-6.27

-147.85

1000

-9.59

172.06

17.71

102.31

-21.40

-6.48

-6.06

-151.29

1050

-9.30

169.80

17.54

99.33

-21.35

-7.19

-5.85

-154.63

1100

-8.92

166.58

17.35

95.43

-21.24

-8.16

-5.60

-158.70

1150

-8.82

163.74

17.09

92.60

-21.16

-9.76

-5.53

-161.69

1200

-8.51

160.75

17.00

89.44

-21.16

-10.80

-5.34

-165.40

C1

Blocking

Capacitor

RF OUT

L1

RF Choke

C3

Bypass

Capacitor

R4

0

Ω

RF IN

C2

Blocking

Capacitor

Vcc=+5V

Icc = 87 mA

WJA1500

R1

0

Ω

R2

0

Ω