
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
July 2004
AH215
1 Watt, High Linearity HBT Amplifier
Product Information
The Communications Edge
TM
S-Parameters (V
cc
= +5 V, I
cc
= 450 mA, T = 25
°
C, calibrated to device leads)
Typical Device Data
0
0.5
1
1.5
2
2.5
Frequency (GHz)
Gain and Maximum Stable Gain
-10
-5
0
5
10
15
20
25
30
35
40
G
DB(|S[2,1]|)
DB(GMax)
0
1
1
-
1
10.0
-
5
5.0
-
-
2
20
-
3
3.0
-
4
4.0
0
0
-0.2
0
0
-0.4
0
0
-.
0
0
-8
S11
Swp Max
5.05GHz
Swp Min
0.05GHz
0
1
1
-
1
10.0
-
5
5.0
-
-
2
20
-
3
30
-
4
4.0
0
0
-0.2
0
0
-0.4
0
0
-.
0
0
-8
S22
Swp Max
5.05GHz
Swp Min
0.05GHz
Notes:
The gain for the unmatched device in 50 ohm system is shown as the trace in black color. For a tuned circuit for a particular frequency,
it is expected that actual gain will be higher, up to the maximum stable gain. The maximum stable gain is shown in the dashed red line.
The impedance loss plots are shown from 0.05 – 5.05 GHz, with markers placed in 0.5 GHz increments.
S-Parameters (V
cc
= +5 V, I
cc
= 450 mA, T = 25
°
C, unmatched 50 ohm system, calibrated to device leads)
Freq (MHz)
S11 (dB)
S11 (ang)
S21 (dB)
50
-1.23
-177.95
24.07
100
-1.01
178.17
19.55
200
-1.01
172.63
15.55
400
-1.03
163.72
12.03
600
-1.21
155.20
9.86
800
-1.34
146.17
8.11
1000
-1.52
136.69
6.92
1200
-2.00
126.65
6.13
1400
-2.65
115.04
5.80
1600
-3.86
97.52
6.01
1800
-6.72
86.05
6.17
2000
-14.09
94.99
6.15
2200
-9.98
166.89
4.98
2400
-4.27
157.68
2.52
2600
-2.13
142.95
-0.42
2800
-1.24
130.88
-3.40
3000
-0.82
120.68
-6.09
S21 (ang)
122.55
116.55
112.97
98.68
85.80
73.18
61.43
49.60
37.55
21.48
1.700
-23.83
-52.92
-80.08
-100.8
-116.44
-128.99
S12 (dB)
-40.25
-39.49
-40.13
-38.83
-39.30
-37.70
-37.73
-37.14
-36.23
-36.45
-34.63
-35.91
-36.75
-39.10
-37.80
-38.58
-39.37
S12 (ang)
17.32
10.63
15.98
10.31
-4.249
-2.398
-16.27
-14.34
-28.50
-46.08
-68.99
-100.68
-147.66
171.86
123.26
89.55
67.22
S22 (dB)
-1.26
-1.33
-1.17
-0.93
-0.66
-0.83
-0.95
-1.05
-1.04
-1.11
-1.10
-1.00
-0.77
-0.79
-0.81
-0.84
-0.92
S22 (ang)
-130.4
-155.43
-169.92
179.61
173.43
168.67
166.34
165.13
164.55
166.24
164.44
162.35
158.42
154.12
149.03
144.09
138.4
Application Circuit PC Board Layout
Circuit Board Material: Top RF layer is .014” Getek, 4 total layers (0.062” thick) for mechanical rigidity
1 oz copper, Microstrip line details: width = .026”, spacing = .026”
The silk screen markers ‘A’, ‘B’, ‘C’, etc. and ‘1’, ‘2’, ‘3’, etc. are used as placemarkers for the input and output tuning
shunt capacitors – C8 and C9. The markers and vias are spaced in .050” increments.