ECP200G 查看數據表（PDF） - Unspecified
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ECP200G Datasheet PDF : 7 Pages
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AH312
2 Watt, High Linearity InGaP HBT Amplifier
The Communications Edge TM
Product Information
Application Note: Reduced Bias Configurations
The AH312 can be configured to be operated with lower bias current by varying the bias-adjust resistor – R1. The
recommended circuit configurations shown previously in this datasheet have the device operating in Class A operation.
Lowering the current has little effect on the gain, OIP3, and P1dB performance of the device, but will slightly lower the
ACLR/ACPR performance of the device as shown below. An example of the measured data below represents the AH312
measured and configured for 2.14 GHz applications. It is expected that variation of the bias current for other frequency
applications will produce similar performance results.
AH312-S8PCB2140 Performance Data
R1
(ohms)
15
22
43
62
110
Icq
(mA)
800
700
600
500
400
Pdiss
(W)
4.0
3.5
3.0
2.5
2.0
P1dB
(dBm)
+33.3
+33.3
+33.1
+33.0
+32.9
OIP3
(dBm)
+51.4
+50.9
+50.9
+50.7
+47.3
2.14GHz Gain vs. Output Power
10.2
2.14GHz OIP3 vs. Output Power per Tone
55
9.8
50
9.4
Idq=800mA 'Class A'
9
Idq=700mA
45
Idq=800mA 'Class A'
Idq=700mA
Idq=600mA
8.6
Idq=500mA
40
Idq=600mA
Idq=500mA
Idq=400mA
8.2
Idq=400mA
35
18
20
22
24
26
28
30
32
34
10
12
14
16
18
20
22
24
Output Power (dBm)
Power Out per Tone (dBm)
W-CDMA ACLR vs. Output Channel Power
3GPP W-CDMA, Test Model 1 + 64 DPCH, ±5 MHz offset
-35
Idq=800mA 'Class A'
-40
Idq=700mA
Idq=600mA
-45
Idq=500mA
Idq=400mA
-50
CW PAE vs. Output Power
100
Idq=800mA 'Class A'
Idq=700mA
Idq=600mA
Idq=500mA
Idq=400mA
10
-55
-60
-65
14
16
18
20
22
24
W-CDMA Channel Power Out (dBm)
1
26
18
20
22
24
26
28
30
32
CW Tone Power Out (dBm)
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 6 of 7 March 2006
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