Sunsea AIoT SIMCom SIM8200G User manual

SIM8200G_LGA
Antenna Port Mapping and
Deign Guide
5G Module
SIMCom Wireless Solutions Co. Ltd.
Building B, SIM Technology Building, No.633, Jinzhong Road
Changning District, Shanghai P.R.China
Tel: [phone]
[e-mail]
www.simcom.com

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Document Title:
SIM8200G_LGA Antenna Port Mapping and Deign Guide
Version:
V1.02
Date:
2021-01-08
Status:
Released
GENERAL NOTES
SIMCOM OFFERS THIS INFORMATION AS A SERVICE TO ITS CUSTOMERS, TO SUPPORT
APPLICATION AND ENGINEERING EFFORTS THAT USE THE PRODUCTS DESIGNED BY SIMCOM.
THE INFORMATION PROVIDED IS BASED UPON REQUIREMENTS SPECIFICALLY PROVIDED TO
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FOR ADDITIONAL RELEVANT INFORMATION, INCLUDING ANY INFORMATION THAT MAY BE IN THE
CUSTOMER’S POSSESSION. FURTHERMORE, SYSTEM VALIDATION OF THIS PRODUCT
DESIGNED BY SIMCOM WITHIN A LARGER ELECTRONIC SYSTEM REMAINS THE RESPONSIBILITY
OF THE CUSTOMER OR THE CUSTOMER’S SYSTEM INTEGRATOR. ALL SPECIFICATIONS
SUPPLIED HEREIN ARE SUBJECT TO CHANGE.
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CHANGE WITHOUT NOTICE AT ANY TIME.
SIMCom Wireless Solutions Limited
Building B, SIM Technology Building, No.633 Jinzhong Road, Changning District, Shanghai P.R.China
Tel: [phone]
Email: [e-mail]
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Version History
Date
Version
Description of change
Author
2020-04-03
1.00
Original
Yu.Liu
2020-04-03
1.01
Add antenna reduction chapter
Yu.Liu
2021-01-08
1.02
Update table 2, 4 and 5
Yibo.Zhong

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Contents
1 Introduction...................................................................................................................................................7
2 Definitions, symbols and abbreviations............................................................................................... 7
3 Antenna Design Guide............................................................................................................................... 8
3.1 port mapping.....................................................................................................................................8
3.2 Reference Design.......................................................................................................................... 10
3.3 PCB layout recommendation......................................................................................................10
4 Antenna Requirements............................................................................................................................ 11

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Table Index
Table1: Antenna ports mapping................................................................................................................................9
Table2: Module frequency bands and antenna ports mapping....................................................................... 9
Table 3: Antenna requirements............................................................................................................................... 11

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Figure Index
Figure1 SIM8200-LGA Module................................................................................................................................... 8
Figure2 Antenna refence design............................................................................................................................ 10

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1Introduction
This document describes the SIM8200G 5G module antenna port mapping and Antenna design guide to
customer to refer.
2Definitions, symbols and abbreviations
Abbreviations
Description
LB
Low Frequency Band 1
MHB
Middle and High Frequency Band2
UHB
Ultra High Frequency Band3
LAA
Limited Access Authorization
TRX
Transmit and Receive signal
DRX
The Diversity Receive signal
UL-MIMO
Uplink- Multiple Input Multiple Output
DL-MIMO
Downlink- Multiple Input Multiple Output
GNSS
Global Navigation Satellite System
1. Frequency is from 600MHz to 960MHz, such as LTE B5/B8/B12/B20/B28 and so on;
2. Frequency is from 1710MHz to 2690MHz, such as LTE B1/B2/B3/B7/B25/ B38/B40/B41 and so on;
3. Frequency is from 3300MHz to 4200MHz, such as LTE B48.
※NOTE

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3Antenna Design Guide
3.1 Port mapping
SIM8200G_LGA is designed with 6 antennas, module and antenna connector is shown in figure1. the
Bands and the Antenna port mapping is shown in table1.
Figure1 SIM8200-LGA Module

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Table1: Antenna Pin Definition
ANT number
LGA footprint number
ANT0
AL1
ANT1
BA25
ANT2
BA41
ANT3
AY51
ANT4
BA33
ANT5
BA19
ANT6
AY1
ANT7
BA47
Table2: Module frequency bands and antenna ports mapping
ANTENNAS
BANDS
FUNCTIONS
ANT0
ANT1
ANT2
ANT3
ANT4
ANT5
ANT6
ANT7
3G/4G/5G LB/MHB TRX
5G n41 UL/DL-MIMO1
5G n79 DL-MIMO2

4G MHB DL-MIMO2
4G UHB DIV
5G n41/n77/n78 DIV

3G/4G/5G LB/MHB DIV
5G n41 DL-MIMO2
5G n79 UL/DL-MIMO1

3G/4G/5G MHB DL-MIMO1
4G UHB DI-MIMO2
5G n77/n78 DL-MIMO2

4G UHB DL-MIMO1
5G n41 TRX
5G n77/n78 UL/DL-MIMO1

5G n77/n78 TRX
4G UHB TRX

5G n79 DIV
GNSS

5G n79 TRX

1. For base function test, only the antennas responding to TRX is needed.
※NOTE

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3.2 Reference Design
The space isolation of each antenna should be larger than 20dB. And the isolation between LTE
antennas and 5GNR antennas is at least 15dB, and the GNSS antenna between 4G/5G antennas should
be larger than 15dB.
Figure2 Antenna refence design
J1 is the LGA pad of RF signal. For most of customers, above match-components (R1/R2,L1/L2,C1/C2
and Tuner) are not needed to meet the requirements. But for the high-level requirements or some bad
antenna design conditions, it is recommended. What’s more, antenna tuner design in the dotted line may be
considered for some customers to enhance the low frequency band performance.
Customer should submit request to SIMcom for tuner support if needed.
3.3 PCB layout recommendation
To avoid interference, minimalize the insertion loss of the RF trace, the PCB should follow below rules:
(1) The coaxial cable PCB pads, RF antenna connector and other connectors which used to test
contact performance of module should place as close as to the module antenna pads.
(2) The antenna matching network should place to antenna feed port.
(3) The RF trace should be as short and straight as possible, and do not routing as perpendicular line,
we recommend do it as 45°corner trace.
※NOTE

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(4) And the RF trace ground should be complete;
(5) RF device should place ground to the nearest ground plane;
(6) Between RF trace and below should avoid other signal trace or parallel trace to the RF signal.
(7) Recommend to more ground vias near the RF traces.
4Antenna Requirements
Table 3: Antenna requirements
Antenna Class
Antenna Requirements
GNSS
frequency：1166.22MHz~1228.62MHz/1559MHz~1609MHz
Polarization：RHCP or Linear
VSWR：<2
Passive antenna Gain: >0dBi
Active antenna noise: <1.5dBi
Active antenna gain: >0dBi
Active antenna LNA gain: <17dB
WCDMA/LTE/NR Sub-6
VSWR：<2
Efficiency：>50%
Input/output impedance：50Ω
Cable Loss：<1dB
5Antenna Reduction
5.1 Two antennas design
If there is a requirement for minimum two antennas, it is recommended to combine ANT4. ANT5 and
ANT7 with a triplexer, and another antenna is ANT0. The triplexer should contain MHB, n77 and n79 bands.
In the market, there is no such triplexer now, need customer to find it by themselves. But if use n78 not n77,
the below triplexer can be used. The P/N is: FI 252M2059CV-T, which designed by Taiyo Yuden

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Figure3 Triplexer characteristic
In this program, the max downlink throughput for n79/n41 changes to half, and quarter for n77/n78.
the max uplink throughput for n79/n77/n78 changes to half, n41 is not affected.
Figure4 Triplexer and Antenna connection
5.2 Four antennas design
For China Mobile (CMCC) only, the NR band need n41 and n79, if customer want to use less
antennas, at least 4 Antennas should be used, they are ANT0, ANT1, ANT4, ANT7.
Table 4: Antenna selection
ANTENNAS
ANT0
ANT1
ANT4
ANT7

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BANDS
FUNCTIONS
3G/4G/5G LB/MHB TRX
5G n41 UL/DL-MIMO1
5G n79 DL-MIMO2

4G MHB DL-MIMO2
4G UHB DIV
5G n41/n77/n78 DIV

4G UHB DL-MIMO1
5G n41 TRX
5G n77/n78 UL/DL-MIMO1

5G n79 TRX

In this case, 3G/4G UL/DL , 5G n79 UL/DL and n41 UL throughput is half of the 8 antennas situation;
5G n41 DL throughput is 3/4 of the 8 antennas situation.
For China Unicom (CU) and China Telecom (CT) , the NR band need n1 (it’s the same to LTE B1)
and n78, if customer want to use less antennas, 4 Antennas should be used, they are ANT0, ANT1,
ANT4, ANT5
Table 5: Antenna selection
ANTENNAS
BANDS
FUNCTIONS
ANT0
ANT1
ANT4
ANT5
3G/4G/5G LB/MHB TRX
5G n41 UL/DL-MIMO1
5G n79 DL-MIMO2

4G MHB DL-MIMO2
4G UHB DIV
5G n41/n77/n78 DIV

4G UHB DL-MIMO1
5G n41 TRX
5G n77/n78 UL/DL-MIMO1

5G n77/n78 TRX
4G UHB TRX

In this case, 3G/4G UL/DL , 5G n1 throughput is half of the 8 antennas situation; 5G n78 DL throughput
is 3/4 of the 8 antennas situation. UL speed is not affected.

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5.3 Six antennas design
If customers want to use all the China NR bands, and want to use less Antennas than the original
design which use 8 Antennas. The six antennas configuration is recommended. Like the 2 Ants design,
ANT4, ANT5 and ANT7 should be combine to with a triplexer, the triplexer detail please refer to 2
antennas design.
In this case, only n77/78 DL/UL throughput is change to half.