
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 2 of 7 May 2005
The Communications Edge
TM
Product Information
AH115 / ECP050G
Watt, High Linearity InGaP HBT Amplifier
Typical Device Data
S-Parameters (V
cc
= +5 V, I
cc
= 250 mA, T = 25 C, unmatched 50 ohm system)
0
0.5
1
Frequency (GHz)
1.5
2
2.5
Gain and Maximum Stable Gain
0
5
10
15
20
25
30
35
G
DB(GMax)
DB(|S[2,1]|)
0
1
1
-
1
10.0
-
5
5.0
-
-
2
2.0
-
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
3.0
-
4
4.0
0
0
-0.2
0
0
-0.4
0
0
-.
0
0
-8
S22
Swp Max
5.05GHz
Swp Mn
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 return loss plots are shown from 50
– 5050 MHz, with markers placed at 0.5 – 5.05 GHz in 0.5 GHz increments.
S-Parameters (V
cc
= +5 V, I
cc
= 250 mA, T = 25 C, unmatched 50 ohm system, calibrated to device leads)
S11 (dB)
S11 (ang)
S21 (dB)
S21 (ang)
-2.11
-172.90
25.10
133.84
-1.59
-178.94
21.15
126.67
-1.51
173.71
17.75
124.19
-1.45
163.84
15.23
111.50
-1.58
153.68
13.69
98.94
-1.78
144.31
12.77
84.57
-1.96
134.21
11.94
69.70
-2.46
123.44
11.36
55.57
-3.30
111.21
11.17
40.93
-4.70
92.57
11.39
22.80
-8.15
78.58
11.64
1.64
-19.01
93.29
11.51
-25.24
-9.59
177.56
10.35
-55.97
-4.09
159.30
7.87
-83.78
-1.99
141.65
4.95
-105.90
-1.12
127.57
1.97
-122.86
-0.72
116.11
-0.88
-136.93
Application Circuit PC Board Layout
Freq (MHz)
50
100
200
400
600
800
1000
1200
1400
1600
1800
2000
2200
2400
2600
2800
3000
S12 (dB)
-36.03
-35.22
-34.29
-34.45
-33.58
-32.84
-32.77
-31.79
-31.12
-30.30
-29.47
-29.31
-30.51
-32.59
-33.96
-34.68
-35.64
S12 (ang)
31.44
15.04
7.30
-2.16
-2.99
-12.80
-18.76
-30.73
-45.14
-61.92
-83.99
-112.79
-150.45
177.62
137.14
109.27
81.83
S22 (dB)
-2.06
-2.73
-2.80
-2.73
-1.96
-1.68
-1.85
-2.14
-2.30
-2.52
-2.43
-1.84
-1.22
-1.06
-1.07
-1.19
-1.44
S22 (ang)
-105.55
-138.75
-160.44
-174.00
-179.13
172.00
166.98
164.05
163.07
164.84
164.25
162.38
155.68
147.58
139.74
132.15
125.05
Circuit Board Material: .014” Getek, 4 - layer, 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.