mga-83563-blk Avago Technologies, mga-83563-blk Datasheet - Page 16

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mga-83563-blk

Manufacturer Part Number
mga-83563-blk
Description
+22 Dbm Psat 3v Power Amplifier For 0.5? 6 Ghz Applications
Manufacturer
Avago Technologies
Datasheet

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Part Number
Manufacturer
Quantity
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Part Number:
mga-83563-blkG
Manufacturer:
AVAGO/安华高
Quantity:
20 000
P
Inductor L2 for the 900 MHz
Amplifier
As was done for the 2.5 GHz
amplifier example, values for L2
were “swept” for verification and
to observe sensitivity of P
PAE. The results are plotted in
Figure 37. This process verified
the correct value of L2 and
provided the 900 MHz data point
used in the Appendix to create
Plot B of Figure 47.
Input
Figure 38. Schematic Diagram for the Example Amplifiers.
Figure 37. 900 MHz P
RF
sat
23.0
22.8
22.6
22.4
22.2
22.0
21.8
21.6
21.4
21.2
21.0
and PAE Sensitivity to
0
L1
5
0.17 in
50 Ω
10
sat
4
and PAE vs. L2.
3
C1
15
83
sat
and
1
6
L2
20
L4
L2 (nH)
0.08 in
Summary of Example
Amplifiers
A schematic diagram for the three
example amplifiers covering
2.5 GHz, 1.9 GHz, and 900 MHz is
shown in Figure 38.
Component values for the three
designs are summarized in
Table 5.
50 Ω
25
P
sat
C4
30
C2
PAE
(RFC)
L3
35
C3
C5
40
Output
RF
V
d
45
55%
50%
45%
40%
35%
30%
Table 5. Component Values for
Example Amplifiers.
The completed amplifier with all
components and SMA connectors
is shown in Figure 39. The circuit
is fabricated on 0.031-inch FR-4
material.
The additional 1000 pF bypass
capacitor, C5, was added to the
bias line near the V
to eliminate interstage feedback.
This layout has provision for an
inductor (L4) at the output of the
MGA-83563. This inductor is not
used in for these example amplifi-
ers and is replaced by a short.
C1, C3, C4
(nH, pF)
C2
C5
L1
L2
L3
L4
16
900 MHz
150
5.6
3.6
12
82
Not used (short circuit)
Frequency
d
1.9 GHz
1000
connection
2.2
2.7
1.2
33
82
2.5 GHz
2.7
1.5
0.9
22
62

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