Specifications and information are subject to change without notice

Page 3 of 4

Dec 2007

WJA1030

+5V Active-Bias InGaP HBT Gain Block

Application Circuit

Recommended Component Values

(1)

Ref. Name

Value / Type

Size

L1

470 nH ferrite core wire wound inductor

(2)

0805

C1, C2

1000 pF NPO chip capacitor

0603

C3

0.018

µF chip capacitor

0603

R1, R2, R4

0

Ω

(3)

0603

C4, C5, C6,

R3, R5, R6,

R7, R8

Do Not Place

(3)

1.

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

2.

For lower cost and performance (500 – 4000 MHz) option use 18 nH air core wire wound inductor.

3.

Place holders for the 0

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

Typical Device Data

Freq (GHz)

S11 (dB)

S11 (ang)

S21 (dB)

S21 (ang)

S12 (dB)

S12 (ang)

S22 (dB)

S22 (ang)

10

-10.83

-58.08

19.46

164.89

-22.65

22.89

-7.78

-42.25

50

-12.23

-141.31

15.67

162.49

-19.17

8.66

-13.74

-117.02

100

-12.34

-161.16

14.97

166.07

-18.94

3.19

-15.40

-144.57

200

-12.35

-173.41

14.68

163.99

-18.79

-1.22

-16.18

-163.35

400

-12.20

178.57

14.70

155.01

-18.77

-6.50

-16.66

-176.66

600

-11.88

173.95

14.68

144.15

-18.79

-11.24

-16.93

174.89

800

-11.82

169.03

14.66

133.15

-18.73

-15.56

-17.11

171.49

1000

-11.96

160.89

14.73

122.08

-18.71

-19.47

-16.77

172.56

1200

-12.09

151.00

14.71

109.83

-18.72

-23.66

-16.57

175.62

1400

-12.00

141.47

14.72

98.56

-18.56

-28.45

-16.37

178.74

1600

-12.08

132.47

14.81

86.09

-18.56

-33.24

-16.52

179.44

1800

-12.41

124.96

14.89

73.48

-18.41

-37.07

-16.66

179.88

2000

-13.68

114.29

14.98

61.01

-18.32

-42.56

-16.10

-177.54

2200

-15.85

96.26

14.98

47.36

-18.25

-47.72

-14.74

-177.03

2400

-18.90

65.65

14.84

33.24

-18.25

-53.56

-12.91

-177.60

2600

-21.35

20.69

14.76

18.24

-18.22

-59.41

-11.52

-179.71

2800

-20.80

-41.45

14.49

3.96

-18.35

-66.15

-10.38

176.84

3000

-16.35

-85.03

14.02

-12.00

-18.44

-72.34

-9.38

170.50

3200

-12.38

-108.85

13.47

-27.18

-18.79

-78.26

-8.30

162.73

3400

-9.61

-124.63

12.65

-42.43

-19.07

-84.90

-7.42

153.42

3600

-7.75

-139.93

11.69

-56.65

-19.52

-89.74

-6.60

145.55

3800

-6.55

-155.31

10.76

-69.84

-19.79

-93.89

-6.01

140.59

4000

-5.60

-170.19

9.64

-82.81

-20.16

-98.32

-5.79

134.97

Device S-parameters are available for Download from the website at: http://www.wj.com

C1

Blocking

Capacitor

RF OUT

L1

RF Choke

C3

Bypass

Capacitor

R4

RF IN

C2

Blocking

Capacitor

Vcc = 5.00V

Icc = 80 mA

WJA1030

R1

R2