AG203-63
InGaP HBT Gain Block
Vcc
Icc = 20 mA
The Communications Edge
TM
Product Information
Application Circuit
R1
Bias
Resistor
C4
Bypass
Capacitor
C3
0.018 µF
L1
RF Choke
RF IN
AG203-63
C1
Blocking
Capacitor
C2
Blocking
Capacitor
RF OUT
Recommended Component Values
Reference
Designator
50
500
L1
820 nH
220 nH
C1, C2, C4
.018 µF
1000 pF
2.
2.
Frequency (MHz)
900
1900
2200
68 nH
27 nH
22 nH
100 pF
68 pF
68 pF
Size
0603
0603
0603
0603
2500
18 nH
56 pF
3500
15 nH
39 pF
The proper values for the components are dependent upon the intended frequency of operation.
The following values are contained on the evaluation board to achieve optimal broadband performance:
Ref. Desig.
L1
C1, C2
C3
C4
R1
Value / Type
39 nH wirewound inductor
56 pF chip capacitor
0.018
μF
chip capacitor
Do Not Place
47.5
Ω
1% tolerance
Recommended Bias Resistor Values
S upply
R1 value
S ize
Voltage
5V
47.5 ohms
0603
6V
98 ohms
0603
7V
148 ohms
0805
8V
198 ohms
0805
9V
248 ohms
1206
10 V
298 ohms
1210
12 V
398 ohms
1210
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.
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)
-25.17
-25.43
-26.52
-23.65
-22.07
-20.63
-19.78
-19.32
-18.82
-15.68
-16.33
-16.81
-17.51
-18.69
-19.88
-20.81
-21.48
-21.14
-19.74
-19.01
-18.41
-19.09
-20.88
-23.32
-27.64
S-Parameters (V
device
= +4.05 V, I
CC
= 20 mA, T = 25
°C,
calibrated to device leads)
S11 (ang)
S21 (dB)
S21 (ang)
S12 (dB)
S12 (ang)
S22 (dB)
2.44
20.58
177.54
-23.20
1.82
-14.17
19.92
20.51
168.67
-23.93
4.61
-14.24
51.29
20.37
157.36
-23.52
3.76
-16.44
49.78
20.03
146.65
-23.46
5.05
-16.98
40.71
19.64
136.55
-23.56
2.97
-17.77
39.53
19.22
126.53
-23.03
6.36
-18.33
35.18
18.75
117.55
-22.67
6.26
-18.95
28.81
18.25
108.83
-22.55
8.11
-19.10
22.65
17.69
100.49
-22.09
7.05
-19.08
16.21
17.13
93.38
-21.84
7.56
-15.66
9.66
16.75
88.14
-21.92
3.19
-16.65
6.23
16.32
80.77
-21.04
4.47
-17.53
4.58
15.86
74.01
-20.83
5.19
-19.10
6.09
15.43
67.67
-20.59
5.81
-20.58
9.58
15.01
61.27
-20.34
3.51
-22.15
20.17
14.56
54.88
-19.86
1.07
-21.67
40.62
14.14
48.38
-19.12
0.00
-19.12
57.36
13.76
42.54
-19.02
-1.99
-16.77
72.23
13.30
36.58
-18.70
-6.17
-14.99
82.70
12.91
30.19
-18.67
-7.40
-14.02
89.08
12.54
24.69
-18.26
-10.48
-13.28
94.75
12.18
19.42
-18.05
-12.75
-13.13
99.20
11.82
14.41
-17.84
-14.26
-13.43
109.55
11.60
9.32
-17.44
-17.25
-14.24
125.83
11.35
4.32
-17.10
-20.45
-14.82
Device S-parameters are available for download on the website at: http://www.wj.com
Typical Device Data
S22 (ang)
-3.37
-8.75
-18.23
-30.04
-41.16
-55.53
-69.93
-85.56
-98.01
-96.28
-105.75
-113.94
-128.07
-142.56
-171.10
154.83
134.30
118.64
108.52
104.45
102.92
100.56
100.66
103.15
106.42
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 5
April 2006
WJCI [ WJ COMMUNICATION. INC. ]
