WJA1035
+5V Active-Bias InGaP HBT Gain Block
Vcc = 5.00V
Icc = 65 mA
Application Circuit
R4
0 Ω
C3
Bypass
Capacitor
L1
RF Choke
RF IN
RF OUT
WJA1035
R1
0 Ω
R2
0 Ω
C2
Blocking
Capacitor
C1
Blocking
Capacitor
Recommended Component Values(1)
Ref. Name Value / Type
L1
Size
470 nH ferrite core wire wound inductor(2) 0805
C1, C2
C3
R1, R2, R4
1000 pF NPO chip capacitor
0.018 μF chip capacitor
0 Ω(3)
0603
0603
0603
C4, C5, C6, Do Not Place(3)
R3, R5, R6,
R7, R8
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 0Ω resistors and “Do Not Place” references are not needed for final design.
Typical Device Data
S-Parameters (Vdevice = +5.00 V, ICC = 64 mA, T = 25 °C, calibrated to device leads)
Freq (MHz)
S11 (dB)
S11 (ang)
S21 (dB)
S21 (ang)
162.82
162.81
166.27
159.56
148.45
136.92
125.59
113.73
101.06
89.00
76.10
62.82
49.54
35.08
19.31
4.52
-10.36
-26.30
-40.96
-54.49
-67.28
-79.14
-90.54
-101.60
-111.29
S12 (dB)
S12 (ang)
25.76
S22 (dB)
-6.92
S22 (ang)
-45.51
10
50
100
300
500
-10.17
-62.05
19.42
-22.42
-12.26
-12.52
-12.54
-12.50
-12.62
-13.08
-13.58
-14.52
-15.46
-16.75
-19.42
-25.75
-26.52
-17.99
-13.57
-10.56
-8.37
-6.60
-5.39
-4.69
-4.14
-3.67
-3.13
-2.77
-143.28
-162.17
-177.90
177.96
175.16
170.88
163.68
156.10
149.91
146.80
146.77
160.04
-105.22
-91.58
15.43
14.83
14.56
14.56
14.54
14.50
14.54
14.63
14.66
14.69
14.77
14.82
14.67
14.54
14.26
13.76
13.29
12.41
11.46
10.43
9.53
-19.09
-18.88
-18.78
-18.69
-18.76
-18.64
-18.59
-18.50
-18.49
-18.35
-18.31
-18.30
-18.40
-18.45
-18.70
-18.96
-19.33
-19.69
-20.18
-20.55
-20.80
-20.98
-21.23
-21.55
8.25
3.06
-4.07
-8.32
-13.97
-15.94
-17.23
-18.02
-18.75
-19.49
-19.55
-18.79
-17.99
-16.95
-15.71
-13.77
-11.78
-9.93
-8.64
-7.77
-7.10
-6.57
-6.12
-5.88
-5.83
-5.94
-117.48
-143.89
-169.98
-178.40
178.73
-179.14
-169.53
-158.21
-148.44
-140.24
-136.15
-136.39
-142.64
-150.42
-157.92
-166.68
-177.36
170.51
160.46
152.12
145.87
138.78
129.66
118.08
700
900
-12.86
-17.42
-22.37
-26.52
-31.10
-36.02
-41.17
-46.76
-52.76
-58.43
-64.51
-70.20
-75.81
-80.92
-84.47
-88.49
-91.02
-94.42
-97.85
-100.66
1100
1300
1500
1700
1900
2100
2300
2500
2700
2900
3100
3300
3500
3700
3900
4100
4300
4500
-98.92
-108.76
-119.89
-130.10
-139.36
-149.24
-160.46
-171.17
-179.86
175.28
8.50
7.44
6.36
-6.32
-6.32
Specifications and information are subject to change without notice
Page 3 of 4 Aug 2007
WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: 408-577-6621 • e-mail: sales@wj.com • Web site: www.wj.com
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