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參數資料
| 型號： | WHM2040AE |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 1.8 ? 4.0 GHz LOW NOISE AMPLIFIER WHM2040AE |
| 中文描述： | 1.8？ 4.0 GHz的低噪聲放大器WHM2040AE |
| 文件頁數： | 2/5頁 |
| 文件大小： | 277K |
| 代理商： | WHM2040AE |
Specifications:
2
www.wantcominc.com
REV B
a)
Table 1
Summary of the electrical specifications WHM2040AE at room temperature
Index
Testing Item
Symbol
Test Constraints
Nom (RT)
Min
Max
Unit
1
2
Gain
Gain Variation
S
21
G
S
11
S
22
S
12
NF
P
1dB
1.8 – 4.0 GHz
1.8 – 4.0 GHz
1.8 – 4.0 GHz
1.8 – 4.0 GHz
1.8 – 4.0 GHz
1.8 – 4.0 GHz
1.8 – 4.0 GHz
26
+/- 1
25
+/- 1.3
dB
dB
3
4
5
6
7
Input Return Loss
Output Return Loss
Reverse Isolation
Noise figure
Output Power 1dB
compression Point
Output-Third-Order
Interception point
Current Consumption
Power Supply Voltage
Thermal Resistance
Operating Temperature
Maximum Average RF Input
Power
18
18
45
1.10
13
14
14
40
12
1.4
dB
dB
dB
dB
dBm
8
IP
3
Two-Tone, P
out
+0 dBm
each, 1 MHz separation
V
dd
= +5 V
Junction to case
1.8 – 4.0 GHz
26
24
dBm
9
10
11
12
13
I
dd
V
dd
R
th,c
T
o
P
IN, MAX
50
+5
45
+4.7
-40
55
+5.3
215
+85
10
mA
V
o
C/W
o
C
dBm
b) Passband Frequency Response
As shown in
Figure 1
, the typical gain of the WHM2040AE is 26.0 dB across 1.8 to 4.0 GHz. The typical
input and output return losses are 18 dB across the frequency of 1.8 to 4.0 GHz.
Figure 2
shows the measured P
1dB
and IP
3
of the WHM2040AE. The typical P
1dB
and IP
3
are 13.0 dBm and
26.0 dBm in the frequency range of 1.8 to 4.0 GHz, respectively.
Figure 3
illustrates the measured noise figure performance at full temperature. The measured results include
the test fixture loss of approximately 0.10 dB. The noise figure is 1.10 ~ 1.30 dB across the frequency range of 1.8 to
4.0 GHz at room temperature. At 85
0
C, WHM2040AE only has 0.30 dB noise increases. At –40
0
C, WHM2040AE
offers approximately 0.25 dB less noise figure than that at room temperature.
Figure 4
demonstrates the stability factor
k
of the amplifier. It is greater than 1.0 in any frequency band and
the amplifier is unconditional stable.
Figure 5
is the block diagram of internal circuit of WHM2040AE. It is a two-stage amplifier with the DC
block capacitors at the input and output RF ports. All the RF matching networks, DC bias circuitries, and temperature
compensation circuits are built in.
Figure 6
demonstrates the application schematic diagram of WHM2040AE. It may require one external
decoupling capacitor of 0.01 uF to build a LNA with WHM2040AE. The +5V DC can be applied at Pin 3. No DC
block capacitor is required for both input and output RF ports. The NC pins connected to ground are recommended.
For +5V line trace length being longer than 6 inch without a decoupling capacitor, an additional 0.01 ~ 0.1 uF de-
coupling capacitor with minimum rating voltage of 10V may be needed across the +5V line to ground. The capacitor
must be rated in the temperature range of -40
0
C to 85
0
C to ensure the entire circuit working in the specified
temperature range.
Figure 7
shows the mechanical outline and recommended motherboard layout of WHM2040AE. Plenty of
ground vias on the motherboard are essential for the RF grounding. The width of the 50-Ohm lines at the input and
output RF ports may be different for different property of the substrate.
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