參數(shù)資料
型號(hào)： AP601
英文描述： High Dynamic Range 1.8W 28V HBT Amplifier
中文描述： 高動(dòng)態(tài)范圍1.8W的28V的異質(zhì)結(jié)雙極晶體管放大器
文件頁(yè)數(shù)： 8/10頁(yè)
文件大小： 777K
代理商： AP601
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 8 of 10 May 2007 ver 1
AP601
High Dynamic Range 1.8W 28V HBT Amplifier
2110-2170 MHz Application Note: Changing Icq Biasing Configurations
The AP601 can be configured to operate with lower bias current by varying the bias-adjust resistor – R2. The recommended
circuit configurations shown previously in this datasheet have the device operating with a 40 mA as the quiescent current (I
CQ
).
This biasing level represents the best tradeoff in terms of linearity and efficiency. Lowering I
CQ
will improve upon the
efficiency of the device, but degraded linearity. Increasing I
CQ
has nominal improvement upon the linearity, but will degrade
the device’s efficiency. Measured data shown in the plots below represents the AP601 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.
Icq
(mA)
(
)
(V)
(V)
10
12k
5
2.50
20
5.44k
5
2.58
30
3.48k
5
2.63
40
2.61k
5
2.68
50
2.06k
5
2.72
60
1.67k
5
2.77
70
1.42k
5
2.81
80
1.22k
5
2.85
14
16
18
20
R2
V
PD
PIN_V
PD
Thermal Rise vs. Output Power vs. Icq
Vcc = 28V
0
20
40
60
80
22
24
26
Output Power (dBm)
T
C
10 mA
20 mA
30 mA
40 mA
50 mA
60 mA
70 mA
80 mA
C19
1.8pF
C5
2.4pF
C22
1.2pF
V
B
V
P
G
V
C
C7
1000pF
3,3pF
ACLR1 vs. Output Power vs. Icq
WCDMA, Vcc = 28V, 2140 MHz, 25
C
-60
-50
-40
-30
18
20
22
24
26
Average Output Power (dBm)
A
10 mA
20 mA
30 mA
40 mA
50 mA
60 mA
70 mA
80 mA
Efficiency vs. Output Power vs. Icq
WCDMA, Vcc = 28V, 2140 MHz, 25
C
0
20
40
60
80
100
120
18
20
22
24
26
Average Output Power (dBm)
C
10 mA
20 mA
30 mA
40 mA
50 mA
60 mA
70 mA
80 mA
Efficiency vs. Output Power vs. Icq
WCDMA, Vcc = 28V, 2140 MHz, 25
C
0
5
10
15
20
25
30
18
20
22
24
26
Average Output Power (dBm)
C
10 mA
30 mA
50 mA
70 mA
20 mA
40 mA
60 mA
80 mA
Gain vs. Output Power vs. Icq
CW tone, Vcc = 28V, 2140 MHz, 25
C
10
11
12
13
14
15
18
22
26
30
34
Output Power (dBm)
G
10 mA
20 mA
30 mA
40 mA
50 mA
60 mA
70 mA
80 mA
Output Power vs. Input Power vs. Icq
CW tone, Vcc = 28V, 2140 MHz, 25
C
18
22
26
30
34
4
8
12
16
20
Input Power (dBm)
O
10 mA
20 mA
30 mA
40 mA
50 mA
60 mA
70 mA
80 mA
Efficiency vs. Output Power vs. Icq
CW tone, Vcc = 28V, 2140 MHz, 25
C
0
10
20
30
40
50
60
18
22
26
30
34
Output Power (dBm)
C
10 mA
20 mA
30 mA
40 mA
50 mA
60 mA
70 mA
80 mA
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