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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 4 of 6 July 2005
AG302-63
InGaP HBT Gain Block
Product Information
Application Circuit
Recommended Component Values
Reference
Designator
L1
C1, C2, C4
1. The proper values for the components are dependent upon the intended frequency of operation.
2. The following values are contained on the evaluation board to achieve optimal broadband performance:
Ref. Desig.
Value / Type
L1
39 nH wirewound inductor
C1, C2
56 pF chip capacitor
C3
0.018
μ
F chip capacitor
C4
Do Not Place
R1
22.1
1% tolerance
Frequency (MHz)
900
1900
68 nH
27 nH
100 pF
50
500
220 nH
1000 pF
2200
22 nH
68 pF
2500
18 nH
56 pF
3500
15 nH
39 pF
820 nH
.018 μF
68 pF
Size
0603
0603
0603
0805
Recommended Bias Resistor Values
Supply
Voltage
5 V
22.1 ohms
6 V
51 ohms
7 V
80 ohms
8 V
108 ohms
9 V
137 ohms
10 V
166 ohms
12 V
223 ohms
R1 value
Size
0603
0805
1206
1210
1210
1210
2010
The proper value for R1 is dependent upon the supply
voltage and allows for bias stability over temperature.
WJ recommends a minimum supply bias of +5 V. A
1% tolerance resistor is recommended.
Typical Device Data
S-Parameters (V
device
= +4.23 V, I
CC
= 35 mA, T = 25
°
C, calibrated to device leads)
S11 (ang)
S21 (dB)
S21 (ang)
-177.05
15.79
177.89
175.72
15.72
170.42
168.09
15.61
160.75
161.31
15.46
151.46
155.28
15.23
142.64
151.47
15.04
133.43
151.02
14.72
124.92
148.77
14.42
116.42
143.58
14.09
108.45
113.17
13.77
100.67
111.03
13.52
95.18
123.77
13.23
87.31
129.86
12.90
79.66
131.49
12.55
72.44
129.32
12.20
64.86
123.22
11.76
57.50
119.37
11.34
49.91
115.92
10.89
43.03
112.56
10.41
36.71
109.83
9.99
30.18
106.48
9.64
24.37
105.44
9.33
19.39
104.94
9.06
14.78
106.52
8.93
9.92
105.88
8.77
4.74
Device S-parameters are available for download on the website at:
http://www.wj.com
Freq (MHz)
50
250
500
750
1000
1250
1500
1750
2000
2250
2500
2750
3000
3250
3500
3750
4000
4250
4500
4750
5000
5250
5500
5750
6000
S11 (dB)
-19.85
-19.98
-18.01
-18.03
-18.40
-18.41
-18.66
-19.00
-19.53
-20.76
-20.87
-19.68
-19.28
-17.79
-15.90
-14.24
-12.67
-11.41
-10.59
-10.10
-9.85
-10.24
-10.79
-11.50
-12.41
S12 (dB)
-19.50
-19.97
-19.89
-19.75
-20.03
-19.57
-19.70
-19.61
-19.21
-19.05
-19.25
-18.88
-18.52
-18.46
-18.38
-18.15
-17.95
-17.83
-17.67
-17.43
-17.45
-17.45
-16.94
-16.70
-16.46
S12 (ang)
1.85
1.77
-1.49
-0.83
-5.40
-3.15
-3.55
-2.45
-4.88
-5.29
-9.57
-8.74
-7.78
-10.45
-12.94
-16.94
-17.17
-21.16
-22.91
-25.99
-26.81
-29.65
-30.74
-31.15
-33.40
S22 (dB)
-22.57
-22.62
-25.70
-23.67
-21.92
-20.29
-19.00
-17.99
-17.12
-15.05
-15.35
-15.64
-15.96
-15.54
-14.38
-12.52
-10.93
-9.42
-8.57
-7.86
-7.45
-7.63
-7.77
-8.37
-9.03
S22 (ang)
-9.39
-20.70
-57.42
-81.31
-97.33
-113.22
-123.83
-133.36
-142.08
-130.60
-142.08
-156.85
-175.61
163.89
142.50
126.50
117.72
109.93
104.82
102.35
102.33
102.18
103.04
104.38
103.86
C1
Blocking
Capacitor
RF OUT
L1
RF Choke
C3
0.018 μF
R1
Bias
Resistor
RF IN
C4
Bypass
Capacitor
C2
Blocking
Capacitor
Vcc
Icc = 35 mA
AG302-63