WJA1021
+5V Active-Bias InGaP HBT Gain Block
Application Circuit
Vcc =+5.00V
Icc = 90 mA
R4
0
Ω
C3
Bypass
Capacitor
RF IN
L1
RF Choke
RF OUT
WJA1021
C1
Blocking
Capacitor
C2
Blocking
Capacitor
For optimal OIP3 performance, the ground plane to the left and right side around the backside paddle of the WJA1021 should be removed as shown in the above PCB layout.
.
Recommended Component Values
(1)
Ref. Name
Value / Type
L1
470 nH ferrite core wire wound inductor
(2)
C1, C2
1000 pF NPO chip capacitor
C3
0.018
µF
chip capacitor
R4
0
Ω
(3)
C4, C5, C6, Do Not Place
(3)
R3, R5, R6,
R7, R8
1.
2.
3.
Size
0805
0603
0603
0603
The listed values are contained on the evaluation board to achieve optimal broadband performance
For lower cost and performance (500 – 2000 MHz) option use 39 nH ceramic core wire wound inductor.
Place holders for the 0Ω resistors and “Do Not Place” references are not needed for final design.
Typical Device Data
S-Parameters (V
device
= +5 V, I
CC
= 90 mA, T = 25
°C,
calibrated to device leads)
Freq (GHz)
S11 (dB)
S11(ang)
S21 (dB)
S21 (ang)
10
-15.27
-76.97
22.78
168.92
50
-13.47
-152.73
20.29
167.37
100
-13.32
-167.56
19.92
167.89
200
-13.32
-176.11
19.69
162.64
400
-12.94
178.15
19.56
149.53
600
-12.38
175.26
19.41
135.79
800
-12.32
168.40
19.13
122.10
1000
-12.56
158.65
18.92
108.57
1200
-12.94
146.78
18.58
94.17
1400
-12.96
137.52
18.24
81.46
1590
-13.24
130.56
17.96
68.23
1600
-13.26
130.42
17.95
67.69
1800
-14.12
124.89
17.61
54.09
2000
-16.59
115.57
17.26
40.63
2200
-21.32
95.97
16.79
27.03
2400
-29.00
44.53
16.18
13.53
2600
-31.47
-55.07
15.66
0.14
2800
-22.56
-119.27
15.05
-13.34
3000
-16.22
-137.02
14.35
-27.33
3200
-12.35
-143.92
13.50
-40.56
3400
-10.00
-148.38
12.51
-53.24
3600
-8.71
-155.84
11.58
-65.24
3800
-7.94
-168.09
10.79
-76.83
4000
-7.03
175.94
9.72
-89.13
S12(dB)
-25.80
-23.38
-23.14
-23.15
-23.10
-23.07
-23.01
-22.96
-23.04
-22.89
-22.87
-22.87
-22.79
-22.96
-22.94
-23.04
-23.06
-23.06
-23.15
-23.27
-23.47
-23.53
-23.40
-23.29
S12 (ang)
14.54
5.70
2.35
-0.19
-3.54
-6.98
-10.41
-12.83
-16.41
-20.13
-23.01
-22.74
-25.91
-29.81
-33.39
-36.47
-39.44
-42.87
-46.10
-49.30
-51.83
-54.62
-57.36
-61.41
S22 (dB)
-10.81
-17.02
-18.91
-19.27
-19.05
-18.22
-16.64
-14.40
-12.71
-11.63
-11.35
-11.36
-11.04
-10.18
-8.81
-7.80
-7.42
-7.44
-7.52
-7.26
-6.61
-5.87
-5.50
-5.62
S22 (ang)
-41.48
-114.67
-138.72
-150.77
-153.38
-155.49
-155.88
-155.90
-156.76
-159.26
-165.00
-165.60
-173.55
178.28
171.50
167.47
162.95
157.56
149.16
140.55
132.18
127.43
124.79
120.23
Device S-parameters are available for download from the website at: http://www.wj.com
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, www.TriQuint.com
Page 3 of 4
April 2008
WJCI [ WJ COMMUNICATION. INC. ]
