LTE TDD Modem external Antenna testing was conducted to verify the Gain of Antenna. With 2600 MHz band Antenna manufacturer claimed a gain of 4.41 dBi. LTE TD standard test dongle was E392 was used. Quite good gains were being observed in point testing and straight line drive test as well. Below given are the results.

1. 1 Highly Confidential
ReferenceNo.(9ptArial)
8/1/2016
temp
T
DD
LTE TD MODEM
EXTERNAL ANTENNA
TEST RESULTS

2. 2 Highly Confidential
ReferenceNo.(9ptArial)
8/1/2016
Summary
• LTE TDD Modem external Antenna testing was conducted to verify the
Gain of Antenna. With 2600 MHz band Antenna manufacturer claimed a
gain of 4.41 dBi. LTE TD standard test dongle was E392 was used.
• Quite good gains were being observed in point testing and straight line
drive test as well. Below given are the results.
• Details are given in subsequent slides
POINT TEST STRIGHT LINE TEST
With antenna average RSRP
-93.44 dBm
With out antenna average
RSRP
-100.77 dBm
Gain
7.33 dBm
With antenna average RSRP
-81.63 dBm
Without antenna average
RSRP
-85.92 dBm
Gain
4.29 dBm

3. 3 Highly Confidential
ReferenceNo.(9ptArial)
8/1/2016
For 2600Mhz Band
gain of 4.41 dBi. Is
expect as per Antenna
specification
Antenna Specification
Electrical Properties
Frequency 704~960；1710~2700MHz
V.S.W.R <=2.0 <=2.5
Impedance 50 0hm Nominal
Radiation Omni-directional
Polarization Linear, Vertical
Connector SMA PLUG Connector
Physical Properties
Antenna Material Antenna BODY: White Pvc
Cable Type RG-174 CABLE
Operating Temp. -10 ~ +70 °C
Storage Temp. +40 ~ +80 °C
Cable Color BLACK
Frequency Band (Mhz.) 704 824 960 1710 1990 2170 2690
Directivity (dBi) 2.89 4.25 3.88 5.12 5.2 6.35 9.3
Efficiency (dB) -2.37 -3.76 -4.45 -4.34 -4.21 -4.53 -4.9
Efficiency (%) 57.99 42.11 35.86 36.78 37.91 35.25 32.38
Gain (dBi) 4.52 4.49 -4.57 4.78 4.99 1.82 4.41

4. 4 Highly Confidential
ReferenceNo.(9ptArial)
8/1/2016
TEST LIMITATION
As most LTE devices are at least 2R hence 02 external Antenna are required.
Even as per vendor recommendation, 2 antennas per one CPE required.
For test conducted Single Antenna was used which might Impair the results.
It is suggested to have 2 Antenna for testing to measure the true gains and benefits
No External Antenna 01 External Antenna
Imbalance between the main and diversity Antenna of a UE will cause low
MCS assignment. Difference should be less then 3 dBm.

5. 5 Highly Confidential
ReferenceNo.(9ptArial)
8/1/2016
POINT TEST
WITHOUT ANTENNA WITH ANTENNA WITHOUT ANTENNA WITH ANTENNA WITHOUT ANTENNA
-101.10 dBm -93.94 dBm -100.16 dBm -92.55 dBm -101.07dBm
With antenna average
RSRP -93.44 dBm
With out antenna average
RSRP -100.77 dBm

6. 6 Highly Confidential
ReferenceNo.(9ptArial)
8/1/2016
STRAIGHT LINE TEST
WITH ANTENNA
WITHOUT ANTENNA
With antenna
average RSRP
-81.63 dBm
With out antenna
average RSRP
-85.92 dBm