PGA-102+ - Mini Circuits

Technical Note
LTE Performance vs. Output Power
Model: PGA-102+
AN-60-052
LTE Base Station MMIC Amplifier
Mini-Circuits PGA-102+ High Dynamic Range MMIC
Amplifier is designed specifically for applications which
require high linear performance, particularly wideband,
advanced digital communications systems such as LTE
which require excellent ACLR suppression and low
EVM.
Figure 1 (PGA‐102+ Test Board) The E-PHEMT based PGA-102+ provides typically +33
dBm OIP3 which translates to high linear performance in
multi-carrier and complex signal environments such as
LTE supporting ACLR_1 Measurements of better than 60 dBc at +6 dBm output.
DUT Configuration:
Test Signal:
Device: PGA‐102+ Test board LTE FDD Downlink (2009-3),
Full filled 64 QAM,10MHz (50 RB)
Supply Voltage: 3.3V, 102 mA Fc = 700 MHz
Temperature: 25C CCDF PAR Note: All data is referenced to 10% 3.63 dB the test board connectors
The PGA-102+ is characterized using a high peak-toaverage ratio OFDM signal used for next generation
LTE within the 700MHz Downlink Band.
Measurement Setup
1.0% 0.1% 0.01% 0.001% 0.0001% 6.67 dB 8.48 dB 10.06 dB 10.90 dB 11.05 dB CCDF: Complementary Cumulative Distribution Function PAR: Peak to Average Ratio DC Power Supply
50 Ohm Test Cable
50 Ohm Test Cable
Agilent N5182A
MXG
PGA‐102+
(Mounted on Characterization Test Board: TB‐313+)
Summary Data
ACLR_1 vs. Output Power
Agilent MXA
EVM vs. Output Power
LTE 700MHz Full Filled 64 QAM Waveform
LTE 700MHz Full Filled 64 QAM Waveform
0
-10
-20
-30
-40
-50
-60
-70
-80
20
EVM-Avg
EVM-Peak
15
EVM(%)
ACLR (dBc)
Bias Tee
DC Block
10
5
0
-5
+0
+5
+10
+15
Output Power(dBm)
AN‐60‐052 Rev.: A M150261 (04/14/15) File: AN60052.doc +20
-5
+0
+5
+10
+15
Output Power(dBm)
+20
Page 1 of 3 Technical Note
LTE Performance vs. Output Power
Model: PGA-102+
AN-60-052
Table 1 Data of ACPR and EVM vs. Output Power
Output Power
(carrier)
dBm
ACLR (dBc)
EVM(%)
ACLR2
LOW
20MHz
ACLR1
LOW
10MHz
ACLR1
HIGH
10MHz
ACLR2
HIGH
20MHz
RMS
Pk
18.00
-42.40
-21.00
-21.00
-42.20
46.55
113.24
17.00
-47.10
-24.40
-24.30
-47.00
38.90
99.33
16.00
-49.50
-27.10
-27.00
-49.40
16.34
94.73
15.00
-51.40
-29.60
-29.60
-51.20
7.40
23.66
14.00
-53.40
-32.40
-32.40
-53.30
5.34
17.85
13.00
-55.60
-35.50
-35.70
-55.40
3.65
12.71
12.00
-57.90
-38.90
-39.00
-57.80
2.43
9.22
11.00
-60.10
-42.70
-42.80
-60.10
1.56
6.46
10.06
-61.40
-45.50
-45.80
-61.30
1.23
5.47
10.00
-61.9
-47.0
-47.2
-61.9
0.997
4.40
8.00
-63.60
-56.80
-57.10
-63.70
0.54
1.93
6.00
-63.80
-63.80
-64.20
-64.00
0.49
1.62
4.00
-63.90
-66.70
-67.20
-63.90
0.47
1.66
2.00
-63.90
-65.80
-65.90
-63.90
0.48
1.73
0.00
-63.80
-65.90
-66.00
-63.90
0.48
1.71
-5.00
-64.10
-66.90
-67.00
-64.10
0.47
1.75
Note:
For output powers less than -5dBm, ACLR measurement accuracy is limited by the dynamic range of the test
equipment.
Figure 2 ACLR Plot at Output Power of 10.06 dBm AN‐60‐052 Rev.: A M150261 (04/14/15) File: AN60052.doc Figure 3 EVM Plot at Output Power of 10.06 dBm Page 2 of 3 Technical Note
AN-60-052
LTE Performance vs. Output Power
Model: PGA-102+
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AN‐60‐052 Rev.: A M150261 (04/14/15) File: AN60052.doc Page 3 of 3