LTE Performance vs. Output Power

Technical Note
LTE Performance vs. Output Power
Model: PHA-1+
AN-60-041
LTE Base Station MMIC Amplifier
Mini-Circuits PHA-1+ Ultra High Dynamic Range MMIC
Amplifier is designed specifically for applications which
require extremely linear performance, particularly
wideband, advanced digital communications systems
such as LTE which require excellent ACLR suppression
and low EVM.
The E-PHEMT based PHA-1+ provides typically +42
dBm OIP3 which translates to extremely linear
performance in multi-carrier and complex signal
environments such as LTE supporting ACLR_1
Measurements of better than -60 dBc at +10 dBm output
and -26 dBc at +20dBm (near the 1 dB compression
point).
Figure 1 (PHA‐1+ Test Board) Test Signal:
DUT Configuration:
AWS_1 Downlink
Fc = 2130 MHz
OFDM, 10 MHz Channel width
Device: PHA‐1+ Test board Supply Voltage: 5.0V, 150 mA Temperature: 25°C Note: All data is referenced to the PCB connectors
CCDF
10% 1.0% 0.1% 0.01% 0.001% 0.0001% The PHA-1+ is characterized using a high peak-toaverage ratio OFDM signal used for next generation LTE
within the AWS-1 Downlink Band.
4.05 dB 7.27 dB 9.12 dB 10.32 dB 11.40 dB 11.98 dB DC Power Supply
Measurement Setup
50 Ohm Test Cable 50 Ohm Test Cable Agilent N5182A MXG PHA‐1+ (Mounted on Characterization Test Board: TB‐313+) Summary Data
ACLR_1 vs. Output Power
Bias Tee ZX85‐12G‐S+ Agilent MXA EVM vs. Output Power
LTE 2130 MHz AWS Waveform
LTE 2130 MHz AWS Waveform
40.00
0.00
35.00
‐10.00
30.00
EVM (%)
ACLR (dBc)
‐20.00
‐30.00
‐40.00
25.00
20.00
15.00
10.00
‐50.00
5.00
‐60.00
0.00
10
‐70.00
10
11
12
13
14
15
16
17
18
Output Power (dBm)
AN-60-041 Rev.: A M150261 (04/14/15) File: AN60041.doc
This document and its contents are the property of Mini-Circuits. 19
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Output Power (dBm)
EVM Avg
EVM‐Peak
Page 1 of 4
Technical Note
LTE Performance vs. Output Power
Model: PHA-1+
ACLR_1 Plots vs. Output power
System Reference
Upper: -67.6 dBc
Lower -71.28 dBc
+ 10 dBm
Upper: -60.1 dBc
Lower: -60.3 dBc
+ 12 dBm
Upper: -51.8 dBc
Lower: -52.0 dBc
+ 15 dBm
Upper: -39.9 dBc
Lower: -40.0 dBc
+ 18 dBm
Upper: -31.0 dBc
Lower: -31.2 dBc
+ 20 dBm
Upper: -26.1 dBc
Lower: -26.3 dBc
AN-60-041 Rev.: A M150261 (04/14/15) File: AN60041.doc
This document and its contents are the property of Mini-Circuits. Page 2 of 4
Technical Note
LTE Performance vs. Output Power
Model: PHA-1+
EVM Constellation Plots vs. Output power
System Reference: Avg: 0.05% / Pk: 1.73%
+10 dBm
0.54% Avg. / 2.02% Pk
+12 dBm
0.75% Avg. / 2.72% Pk
+15 dBm
2.31% Avg. / 8.12% Pk
+18 dBm
6.19% Avg. / 22.6% Pk
+20 dBm
11.2% Avg. / 37.7% Pk
AN-60-041 Rev.: A M150261 (04/14/15) File: AN60041.doc
This document and its contents are the property of Mini-Circuits. Page 3 of 4
Technical Note
LTE Performance vs. Output Power
Model: PHA-1+
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AN-60-041 Rev.: A M150261 (04/14/15) File: AN60041.doc
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