Dejero EM9191 Quick setup guide

Hardware Integration Guide
August 22,2022

EM9191Hardware Integration Guide
August 22,2022
2
Important Notice
Due to the nature of wireless communications, transmission and reception of data can never be
guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost. Although significant
delays or losses of data are rare when wireless devices such as the Dejero Labs Inc modem are
used ina normal manner with a well-constructed network, the Dejero Labs Inc modem should not be
used in situations where failure to transmit or receive data could result in damage of any kind to the
user or any other party, including but not limited to personal injury, death, or loss of property. Dejero
Labs Inc accepts no responsibility for damages of any kind resulting from delays or errors in data
transmitted or received using the Dejero Labs Inc modem, or for failure of the Dejero Labs Inc
modem to transmit or receive such data.
Safety and Hazards
Do not operate the Dejero Labs Inc modem in areas where cellular modems are not advised without
proper device certifications. These areas include environments where cellular radio can interfere
such asexplosive atmospheres, medical equipment, or any other equipment which may be
susceptible to any form of radio interference. The Dejero Labs Inc modem can transmit signals that
could interfere with this equipment. Do not operate the Dejero Labs Inc modem in any aircraft,
whether the aircraft is on the ground or in flight. In aircraft, the Dejero Labs Inc modem MUST BE
POWERED OFF.When operating, the Dejero Labs Inc modem can transmit signals that could
interfere with various onboard systems.
Note: Some airlines may permit the use of cellular phones while the aircraft is on the ground and the door
is open. Dejero Labs Inc modems may be used at this time.
The driver or operator of any vehicle should not operate the Dejero Labs Inc modem while in control
of a vehicle. Doing so will detract from the driver or operator’s control and operation of that vehicle. In
some states and provinces, operating such communications devices while in control of a vehicle is an
offence.
Limitations of Liability
This manual is provided “as is”. Dejero Labs Inc makes no warranties of any kind, either expressed
or implied, including any implied warranties of merchantability, fitness for a particular purpose, or
noninfringement. The recipient of the manual shall endorse all risks arising from its use.
The information in this manual is subject to change without notice and does not represent a
commitment on the part of Dejero Labs Inc.DEJERO LABS INC AND ITS AFFILIATES
SPECIFICALLY DISCLAIM LIABILITY FOR ANY AND ALL DIRECT, INDIRECT, SPECIAL,
GENERAL, INCIDENTAL, CONSEQUENTIAL, PUNITIVE OR EXEMPLARY DAMAGES INCLUDING,
BUT NOT LIMITED TO, LOSS OF PROFITS OR REVENUE OR ANTICIPATED PROFITS OR
REVENUE ARISING OUT OF THE USE OR INABILITY TO USE ANY DEJERO LABS INC
PRODUCT, EVEN IF DEJERO LABS INC AND/OR ITS AFFILIATES HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES OR THEY ARE FORESEEABLE OR FOR CLAIMS BY ANY
THIRD PARTY.
Notwithstanding the foregoing, in no event shall Dejero Labs Inc and/or its affiliates aggregate
liability arising under or in connection with the product, regardless of the number of events,
occurrences, or claims giving rise to liability, be in excess of the price paid by the purchaser for the
Dejero Labs Inc product.

EM9191Hardware Integration Guide
August 22,2022
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Patents
This product may contain technology developed by or for Dejero Labs Inc.
This product includes technology licensed from QUALCOMM®.
This product is manufactured or sold by Dejero Labs Inc or its affiliates under one or more patents
licensed from MMP Portfolio Licensing.
Copyright
© 2022 Dejero Labs Inc.All rights reserved.
Trademarks
Windows®and Windows Vista®are registered trademarks of Microsoft Corporation.
Macintosh®and Mac OS X®are registered trademarks of Apple Inc., registered in the U.S. and
othercountries.
QUALCOMM®is a registered trademark of QUALCOMM Incorporated. Used under
license.Other trademarks are the property of their respective owners.
Contact Information
Sales information and technical support, including
warranty and returns
Web: dejero.com/company/contact-us/
US & Canada toll-free number: 1-866-808-3665
International number: 1-519-772-4824
Corporate and product information Web: dejero.com

EM9191Hardware Integration Guide
August 22,2022
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Contents
1. INTRODUCTION ..................................................................................................5
1.1. Accessories .........................................................................................................................5
1.2. Required Connectors...........................................................................................................5
2. POWER ................................................................................................................6
2.1. Power Supply.......................................................................................................................6
2.2. Module Power States ..........................................................................................................6
2.2.1. Power State Transitions.............................................................................................7
3. RF SPECIFICATIONS ..........................................................................................9
3.1. RF Connections .................................................................................................................10
3.1.1. Shielding ..................................................................................................................10
3.2. Sub-6G Antennas and Cabling..........................................................................................10
3.3. Ground Connection ...........................................................................................................11
3.4. Interference and Sensitivity ...............................................................................................11
3.4.1. Interference from Other Wireless Devices...............................................................11
3.4.2. Host-generated RF Interference ..............................................................................12
3.4.3. Device-generated RF Interference ..........................................................................12
3.4.4. Methods to Mitigate Decreased Rx Performance....................................................12
3.4.5. Radiated Spurious Emissions (RSE).......................................................................12
3.5. Radiated Sensitivity Measurement....................................................................................12
3.5.1. Dejero Labs Inc’ Sensitivity Testing and Desensitization Investigation .................... 13
3.5.2. Sensitivity vs. Frequency .........................................................................................13
3.6. Supported Frequencies .....................................................................................................13
3.7. Antenna Specification........................................................................................................16
3.7.1. Recommended WWAN Antenna Specifications......................................................16
3.7.2. Recommended GNSS Antenna Specifications .......................................................18
4. REGULATORY COMPLIANCE AND INDUSTRY CERTIFICATION .................19
4.1. RoHS Directive Compliant.................................................................................................19
4.2. Important Notice ................................................................................................................19
4.3. Safety and Hazards ...........................................................................................................19
4.4. Important Compliance Information for the United States and Canada..............................20
5. ABBREVIATIONS ..............................................................................................23

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1. Introduction
The Dejero Labs Inc EM9191Embedded Module is a FirstNet-ready (B14 LTE) M.2 module and
provides 5G NR Sub-6G, 5G mmWave, 4G LTE advanced Pro, 3G (HSPA+, UMTS), and GNSS
connectivity for a wide range of devices and purposes, including business, personal, and
portable computing and communication devices, IoT devices, M2M applications and industrial
use cases.
EM9191Embedded Modules are available in a variety of region-specific and function-specific
SKUs, including both 5G NR Sub-6Gand 5G mmWave-capable variants.
1.1. Accessories
A hardware development kit is available for M.2 modules. The kit contains hardware
components for evaluating and developing with the module, including:
Development board
Cables
Antennas
Other accessories
For over-the-air 5G and LTE testing, ensure that an appropriate antenna is being used.
1.2. Required Connectors
Table 1-1 describes the connectors used to integrate the EM9191Embedded Module into your host
device.
Table 1-1 Required Host-Module Connectors1
Connector Type
Description
RF cables — 5G NR Sub-6G/ LTE/GNSS
Mate with M.2-spec connectors
Four connector jacks (mate with I-PEX 20448-001R-081 or
equivalent)
RF cables — mmWave
Eight connector jacks (mate with I-PEX 20955-001R-13 or
equivalent)
Two cables for each mmWave antenna module (up to 8 cables
in total)
EDGE (67 pin)
Slot B compatible — Per the M.2 standard (PCI Express M.2™
Specification Revision 3.0, Version 1.2), a generic 75-pin
position EDGE connector on the motherboard uses a
mechanical key to mate with the 67-pin notched module
connector.
Manufacturers include LOTES (part #APCI0018-P001A01),
Kyocera, JAE, Tyco, and Longwell.
SIM Industry-standard connector.
1. Manufacturers/part numbers are for reference only and are subject to change. Choose connectors that are appropriate
for your own design.

6
2. Power
2.1. Power Supply
The host provides power to the EM9191through multiple power and ground pins as summarized
in Table 2-1.
The host must provide safe and continuous power (via battery or a regulated power supply) at all
times; the module does not have an independent power supply, or protection circuits to guard against
electrical issues.
Table 2-1 Power and Ground Specifications
Name Pins Specification Min Typ Max Units
VCC
(3.3V) 2, 4, 24, 38, 68, 70, 72, 74
Voltage range 3.135 3.3 4.4 V
Ripple voltage
-
-
100
mV
pp
Peak Current - - 4000 mA
Continuous
Current
- TBD - mA
GND 3, 5, 11, 27, 33, 39, 45, 51, 57, 71, 73 - 0 - V
2.2. Module Power States
The module has five power states, as described in Table 2-2.
Table 2-2 Module Power States
State Details
Host Is Powered
Host Interface Active
RF Enabled
Normal (Default
State)
Module is active
Default state. Occurs when VCC is first applied,
Full_Card_Power_Off# is deasserted (pulled high), and
W_DISABLE# is deasserted
Module is capable of placing/receiving calls, or establishing data
connections on the wireless network
Current consumption is affected by several factors, including:
Radio band being used
Transmit power
Receive gain settings
Data rate
 

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State Details
Host Is Powered
Host Interface Active
RF Enabled
Low Power
(Airplane Mode)

Module is active
Module enters this state:
Under host interface control:
Host issues AT+CFUN=0 (3GPP TS 27.007), or
Host asserts W_DISABLE#, after AT!PCOFFEN=0 has been
issued.
Automatically, when critical temperature or voltage trigger limits
have been reached)
 
-
Sleep
Normal state of module between calls or data connections
Module cycles between wake (polling the network) and sleep, at
network provider-determined interval.
 --
Off
Host keeps module powered off by asserting Full_Card_Power_Off#
(signal pulled low or left floating)
Module draws minimal current
 --
Disconnected Host power source is disconnected from the module and all voltages
associated with the module are at 0 V. ---
2.2.1. Power State Transitions
The module uses state machines to monitor supply voltage and operating temperature and notifies
the host when critical threshold limits are exceeded. (See Table 2-3 for trigger details and Figure 2-1
for state machine behavior.)
Power state transitions may occur:
Automatically, when critical supply voltage or module temperature trigger levels are encountered.
Under host control, using available AT commands in response to user choices (for example,
opting to switch to airplane mode) or operating conditions.
Table 2-3 Power State Transition Trigger Levels
Transition
Voltage
Temperature1
Notes
Trigger V Trigger
℃
Normal to Low Power VOLT_HI_CRIT 4.6 TEMP_LO_CRIT -45 RF activity suspended
VOLT_LO_CRIT 2.9 TEMP_HI_CRIT 118
Low Power to Normal VOLT_HI_NORM 4.4 TEMP_NORM_LO -30
RF activity resumed
Low Power to Normal
Or Remain in Normal
(Remove warnings)
VOLT_LO_NORM 3.135 TEMP_HI_NORM 100
Normal
(Issue warning) VOLT_LO_WARN 3.135 TEMP_HI_WARN 100
In the TEMP_HI_WARN state, the
module may have reduced
performance (Class B temperature
range).
Power off/on
(Host-initiated)
- - - -
Power off recommended when
supply voltage or module operating
temperature is critically low or high.
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Power
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1. Module junction temperature at the printed circuit board.
Normal mode
current_vcc <VOLT_LO_WARN
current_temp > TEMP_HI_WARN
current_vcc >VOLT_LO_NORM
current_temp < TEMP_HI_NORM
Normal mode
Low supply voltage warning
or
High temperature warning
current_vcc < VOLT_LO_CRIT
current_temp > TEMP_HI_CRIT
current_vcc > VOLT_HI_CRIT
Low power mode
(Manual transition)
Off mode Handled by
current_temp < TEMP_LO_CRIT
current_vcc < VOLT_HI_NORM
current_temp > TEMP_NORM_LO
Handled by Power State
state machine.
Host deasserts
Full_Card_Power_Off#
Power State state machine
Figure 2-1 Voltage/Temperature Monitoring State Machines
Note: Make sure that your system design provides sufficient cooling for the module.
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9
3. RF Specifications
The EM9191includes Four MHF4 RF connectors for use with host-supplied antennas, and eight
MHF7S connectors for use with up to four mmWave antenna modules (2 connectors per antenna
module):
Figure 3-1 Module Connectors Include Image with Spacing Info
Sub-6G/GNSS connectors:
Main: Primary Tx/PRx path for 3G/4G/5G (except for n41)
Auxiliary: Diversity Rx (except for n41) and GNSS L1
MIMO1: MIMO1 Rx Path and n41 TRx
MIMO2: MIMO2 Rx Path and n41 DRx and GNSS L5
mmWave connectors:
Eight connectors — Up to four mmWave antenna modules (QTM525 or QTM527), two
connectors as a pair (H/V) for each. The EM9190 module does not have integrated antennas.
Refer to Table 3-1 for each pair of coaxial connections. For low-power usage, if not all 4
QTM525 modules are equipped, integration sequence from QTM0 to QTM3 is recommended,
leave unused connectors NC (Contact Dejero Labs Inc as the RFC has to be updated to
reflect the number of QTMs). Note that for high-power usage, it’s not recommended to leave
any QTM527 NC as it will violate 3GPP EIRP compliance for PC1.
Table 3-1 mmWave Port Assignment
QTM P_ON
QTM525 IF port <-> mmWave IF Connector
QTM527 IF port <-> mmWave IF Connector
IF1
IF2
IF1
IF2
QTM0 QTM0_PON QTM0_H <-> IFH1 QTM0_V <-> IFV4 QTM0_H <-> IFH1 QTM0_V <-> IFV4
QTM1 QTM1_PON QTM1_H <-> IFH4 QTM1_V <-> IFV1 QTM1_H <-> IFH2 QTM1_V <-> IFV3
QTM2 QTM2_PON QTM2_H <-> IFH2 QTM2_V <-> IFV3 QTM2_H <-> IFH3 QTM2_V <-> IFV2
QTM3 QTM3_PON QTM3_H <-> IFH3 QTM3_V <-> IFV2 QTM3_H <-> IFH4 QTM3_V <-> IFV1
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3.1. RF Connections
When attaching antennas to the module:
Sub-6G /GNSS connectors:
Use RF plug connectors that are compatible with the following RF receptacle connectors:
I-PEX (20449-001E (MHF4)).
Match coaxial connections between the module and the antenna to 50Ω.
Minimize RF cable losses to the antenna; the recommended maximum cable loss for antenna
cabling is 0.5 dB.
mmWave connectors:
Use RF plug connectors that are compatible with the following RF receptacle connectors:
I-PEX (20956-001E-01 (MHF7S)).
To ensure best thermal performance, use the ground hole (if possible) to attach (ground) the
device to a metal chassis.
Note: If antenna connection is shorted or open, the modem will not sustain permanent damage.
3.1.1. Shielding
The module is fully shielded to protect against EMI and must not be removed.
3.2. Sub-6G Antennas and Cabling
When selecting the Sub-6G antennas and cables, it is critical to RF performance to match antenna
gain and cable loss.
Note: There is no explicit list of antennas required in the application. The PWB-6-60-RSMAP Wide Band
4G/5G Terminal Paddle Antenna has been verified as a reference. For detailed electrical
performance criteria, see Antenna Specification.
Choosing the Correct Sub-6G Antenna and Cabling
When matching antennas and cabling:
The antenna (and associated circuitry) should have a nominal impedance of 50Ω with a return
loss of better than 10 dB across each frequency band of operation.
The system gain value affects both radiated power and regulatory (FCC, IC, CE, etc.) test
results.
Designing Custom Sub-6G Antennas
Consider the following points when designing custom antennas:
A skilled RF engineer should do the development to ensure that the RF performance is
maintained.
If multiple modules will be installed on the same platform, you may want to develop separate
antennas for maximum performance.
Determining the Sub-6G Antenna’s Location
When deciding where to put the antennas:
Antenna location may affect RF performance. Although the module is shielded to prevent
interference in most applications, the placement of the antenna is still very important — if the
host device is insufficiently shielded, high levels of broadband or spurious noise can degrade the
module’s performance.
Connecting cables between the module and the antenna must have 50Ω impedance. If the
impedance of the module is mismatched, RF performance is reduced significantly.
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Antenna cables should be routed, if possible, away from noise sources (switching power
supplies, LCD assemblies, etc.). If the cables are near the noise sources, the noise may be
coupled into the RF cable and into the antenna. See Interference from Other Wireless Devices.
Disabling the Auxiliary (Diversity) Antenna
Certification testing of a device with an integrated EM9191may require the module’s main
and diversity antennas to be tested separately.
To facilitate this testing, receive diversity can be enabled/disabled using AT commands:
!RXDEN — used to enable/disable diversity for single-cell call (no carrier aggregation).
!LTERXCONTROL — used to enable/disable paths (in carrier aggregation scenarios) after a call
is set up.
Note: LTE networks expect modules to have more than one antenna enabled for proper operation.
Therefore, customers must not commercially deploy their systems with the diversity antenna
disabled.
A diversity antenna is used to improve connection quality and reliability through redundancy.
Because two antennas may experience different interference effects (signal distortion, delay, etc.),
when one antenna receives a degraded signal, the other may not be similarly affected.
3.3. Ground Connection
When connecting the module to system ground:
Prevent noise leakage by establishing a very good ground connection to the module through the
host connector.
Connect to system ground using the ground hole shown in Figure 3-1.
Minimize ground noise leakage into the RF. Depending on the host board design, noise could
potentially be coupled to the module from the host board. This is mainly an issue for host designs
that have signals traveling along the length of the module, or circuitry operating at both ends of
the module interconnects.
3.4. Interference and Sensitivity
Several interference sources can affect the module’s RF performance (RF desense). Common
sources include power supply noise and device-generated RF.
RF desense can be addressed through a combination of mitigation techniques (Methods to Mitigate
Decreased Rx Performance) and radiated sensitivity measurement (Radiated Sensitivity
Measurement).
Note: The EM9191is based on ZIF (Zero Intermediate Frequency) technologies. When performing EMC
(Electromagnetic Compatibility) tests, there are no IF (Intermediate Frequency) components from
the module to consider.
3.4.1. Interference from Other Wireless Devices
Wireless devices operating inside the host device can cause interference that affects the module.
To determine the most suitable locations for antennas on your host device, evaluate each wireless
device’s radio system, considering the following:
Any harmonics, sub-harmonics, or cross-products of signals generated by wireless devices that
fall in the module’s Rx range may cause spurious response, resulting in decreased Rx
performance.
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The Tx power and corresponding broadband noise of other wireless devices may overload or
increase the noise floor of the module’s receiver, resulting in Rx desense.
The severity of this interference depends on the closeness of the other antennas to the module’s
antenna. To determine suitable locations for each wireless device’s antenna, thoroughly evaluate your
host device’s design.
3.4.2. Host-generated RF Interference
All electronic computing devices generate RF interference that can negatively affect the receive
sensitivity of the module.
Proximity of host electronics to the antenna in wireless devices can contribute to decreased Rx
performance. Components that are most likely to cause this include:
Microprocessor and memory
Display panel and display drivers
Switching-mode power supplies
3.4.3. Device-generated RF Interference
The module can cause interference with other devices. Wireless devices such as embedded
modules transmit in bursts (pulse transients) for set durations (RF burst frequencies). Hearing aids
and speakers convert these burst frequencies into audible frequencies, resulting in audible noise.
3.4.4. Methods to Mitigate Decreased Rx Performance
It is important to investigate sources of localized interference early in the design cycle. To reduce the
effect of device-generated RF on Rx performance:
Put the antenna as far as possible from sources of interference. The drawback is that the module
may be less convenient to use.
Shield the host device. The module itself is well shielded to avoid external interference. However,
the antenna cannot be shielded for obvious reasons. In most instances, it is necessary to employ
shielding on the components of the host device (such as the main processor and parallel bus)
that have the highest RF emissions.
Filter out unwanted high-order harmonic energy by using discrete filtering on low frequency lines.
Form shielding layers around high-speed clock traces by using multi-layer PCBs.
Route antenna cables away from noise sources.
3.4.5. Radiated Spurious Emissions (RSE)
When designing an antenna for use with embedded modules, the host device with an embedded
module must satisfy any applicable standards/local regulatory bodies for radiated spurious emission
(RSE) for receive-only mode and for transmit mode (transmitter is operating).
Note that antenna impedance affects radiated emissions, which must be compared against the
conducted 50Ω emissions baseline. (Dejero Labs Inc embedded modules meet the 50Ω conducted
emissions requirement.)
3.5. Radiated Sensitivity Measurement
A wireless host device contains many noise sources that contribute to a reduction in Rx performance.
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To determine the extent of any receiver performance desensitization due to self-generated noise
in the host device, over-the-air (OTA) or radiated testing is required. This testing can be performed
using your own OTA test chamber for in-house testing.
3.5.1. Dejero Labs Inc’sSensitivity Testing and
Desensitization Investigation
Although embedded modules are designed to meet network operator requirements for receiver
performance, they are still susceptible to various performance inhibitors.
3.5.2. Sensitivity vs. Frequency
Sensitivity definitions for supported RATs:
UMTS bands — sensitivity is defined as the input power level in dBm that produces a BER (Bit
Error Rate) of 0.1%. Sensitivity should be measured at all UMTS frequencies across each band.
LTE bands — sensitivity is defined as the RF level at which throughput is 95% of maximum.
5G NR Sub-6G bands — sensitivity is defined as RF level at which throughput is 95% of
maximum.
3.6. Supported Frequencies
The EM9191supports data operation on 5G NR, 4G LTE and 3G networks over the bands
described inTable 3-2.
Table 3-2 RF Band Support
Technology Bands
5G mmWave1n257, n258, n260, n261
Sub-6G n1, n2, n3, n5, n28, n41, n66, n71, n77, n78, n79
LTE LTE
B1, B2, B3, B4, B5, B7, B8, B12, B13, B14, B17, B18, B19,
B20, B25, B26, B28, B29, B302, B32, B34, B38, B39, B40,
B41, B42, B463, B48, B66, B71
3G HSPA+/WCDMA Bands 1, 2, 3, 4, 5, 6, 8, 9, 19
GNSS1L1 GPS/QZSS L1, GLONASS G1, Galileo E1, BeiDou B1i
L5 GPS L5, GAL E5a, QZSS L5, BDS B2a
1.
EM9191hardware include IF and BB part for mmWave support, it has to work with Qualcomm QTM525 or QTM527 chipset
to implement mmWave. QTM527 and QTM527 array with dedicate power management, RF power amplifiers and frequency
converters integrated.
2. Devices can choose to operate B30 as Tx/Rx or Rx only.
3. LTE-LAA
See following tables for supported bands frequency and bandwidth:
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Table 3-3 Supported Frequency Bands, by RAT (5G/LTE/3G)
Band#
5G
(n<band#>)
LTE
(B<band#>)
3G
(Band<band#>)
Frequency (Tx) Frequency (Rx)
1 Yes Yes Yes 1920–1980 MHz 2110–2170 MHz
2 Yes Yes Yes 1850–1910 MHz 1930–1990 MHz
3 Yes Yes Yes 1710–1785 MHz 1805–1880 MHz
4 Yes Yes 1710–1755 MHz 2110–2155 MHz
5 Yes Yes Yes 824–849 MHz 869–894 MHz
6 Yes 830–840 MHz 875–885 MHz
7 Yes 2500–2570 MHz 2620–2690 MHz
8 Yes Yes 880–915 MHz 925–960 MHz
9 Yes 1749.9–1784.9 MHz 1844.9–1879.9 MHz
12 Yes 699–716 MHz 729–746 MHz
13 Yes 777–787 MHz 746–756 MHz
14 Yes 788–798 MHz 758–768 MHz
17 Yes 704–716 MHz 734–746 MHz
18 Yes 815–830 MHz 860–875 MHz
19 Yes Yes 830–845 MHz 875–890 MHz
20 Yes 832–862 MHz 791–821 MHz
25 Yes 1850–1915 MHz 1930–1995 MHz
26 Yes 814–849 MHz 859–894 MHz
28 Yes Yes 703–748 MHz 758–803 MHz
29 Yes N/A 717–728 MHz
30
Yes 2305–2315 MHz
Note: B30 Tx is
disabled.
2350–2360 MHz
32 Yes N/A 1452–1496 MHz
34 Yes 2010–2025 MHz (TDD)
38 Yes 2570–2620 MHz (TDD)
39 Yes 1880–1920 MHz (TDD)
40 Yes 2300–2400 MHz (TDD)
41 Yes Yes 2496–2690 MHz (TDD)
42 Yes 3400–3600 MHz (TDD)
46 Yes N/A 5150–5925 MHz (TDD)
48 Yes 3550–3700 MHz (TDD)
66 Yes Yes 1710–1780 MHz 2110–2200 MHz
71 Yes Yes 663–698 MHz 617–652 MHz
77 Yes 3300–4200 MHz (TDD)
78 Yes 3300–3800 MHz (TDD)
79 Yes 4400–5000 MHz (TDD)
257 Yes 26500–29500 MHz (TDD)
258 Yes 24250–27500 MHz (TDD)
260 Yes 37000–40000 MHz (TDD)
261 Yes 27500–28350 MHz (TDD)
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Table 3-4 LTE Bandwidth Support1
Band 1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz
B1 Yes Yes Yes Yes
B2 Yes Yes Yes Yes Yes2Yes2
B3 Yes Yes Yes Yes Yes2Yes2
B4 Yes Yes Yes Yes Yes Yes
B5 Yes Yes Yes Yes2
B7 Yes Yes Yes3Yes2,3
B8 Yes Yes Yes Yes2
B12 Yes Yes Yes2Yes2
B13
Yes2Yes2
B14
Yes
2
Yes
2
B17 Yes2Yes2
B18 Yes Yes2Yes2
B19 Yes Yes2Yes2
B20 Yes Yes2Yes2Yes2
B25 Yes Yes Yes Yes Yes2Yes2
B26 Yes Yes Yes Yes2Yes2
B28 Yes Yes Yes2Yes2Yes2,3
B29 Yes Yes Yes
B30 Yes Yes2
B32 Yes Yes Yes Yes
B34 Yes Yes Yes
B38 Yes Yes Yes3Yes3
B39 Yes Yes Yes3Yes3
B40 Yes Yes Yes Yes
B41 Yes Yes Yes Yes
B42 Yes Yes Yes Yes
B46 Yes Yes
B48 Yes Yes Yes Yes
B66 Yes Yes Yes Yes Yes Yes
B71 Yes Yes Yes Yes2Yes2Yes2
1. Table contents are derived from 3GPP TS 36.521-1 v15.5.0, table 5.4.2.1-1.
2. Bandwidth for which a relaxation of the specified UE receiver sensitivity requirement (Clause 7.3 of 3GPP TS 36.521-1
v15.5.0) is allowed.
3. Bandwidth for which uplink transmission bandwidth can be restricted by the network for some channel assignments in
FDD/TDD co-existence scenarios in order to meet unwanted emissions requirements (Clause 6.6.3.2 of 3GPP TS 36.521-
1 v15.5.0).
Table 3-5 NR Bandwidth Support1,2,3
Band
5
MHz
10
MHz
15
MHz
20
MHz
25
MHz
30
MHz
40
MHz
50
MHz
60
MHz
80
MHz
90
MHz
100
MHz
n1 Yes Yes Yes Yes
n2 Yes Yes Yes Yes
n3 Yes Yes Yes Yes
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EM9191Hardware Integration Guide
RF Specifications
16
Band
5
MHz
10
MHz
15
MHz
20
MHz
25
MHz
30
MHz
40
MHz
50
MHz
60
MHz
80
MHz
90
MHz
100
MHz
n5
Yes
Yes
Yes
Yes
n28 Yes Yes Yes Yes
n41 Yes Yes Yes Yes Yes Yes4Yes
n66 Yes Yes Yes Yes
n71 Yes Yes Yes Yes
n77 Yes Yes Yes Yes Yes4Yes
n78 Yes Yes Yes Yes Yes Yes4Yes
n79 Yes Yes Yes Yes Yes
1. Table contents are derived from 3GPP TS 38.521-1 v15.3.0, table 5.3.5-1.
2. For FR1 Sub-6G bands, NR TDD Bands (n41/77/78/79), only SCS 30KHz is supported, and for other FDD bands, only
SCS 15KHz is supported.
3. For FR2 mmWave bands, only 50MHz and 100MHz bandwidth is supported.
4. This UE channel bandwidth is optional in Release 15.
3.7. Antenna Specification
This appendix describes recommended electrical performance criteria for Sub-6G, GNSS,
and mmWave antennas used with embedded modules.
The performance specifications described in this section are valid while antennas are mounted in the
host device with antenna feed cables routed in their final application configuration.
Note: Antennas should be designed before the industrial design is finished to make sure that the best
antennas can be developed.
3.7.1. Recommended WWAN Antenna Specifications
Table 3-6 Antenna Requirements1
Parameter Requirements Comments
Antenna System
(NR/LTE) External multi-band 4x4 MIMO
antenna system (Ant1/ Ant2/Ant3/Ant4)2
(3G) External multi-band antenna system
with diversity (Ant1/Ant2)
If Ant2 or Ant3 includes GNSS, then it
must also satisfy requirements in Table 3-
7.
Operating Bands —
Ant1
All supporting Tx and Rx frequency
bands.
Operating Bands —
Ant2/3/4
All supporting Rx frequency bands, plus
GNSS frequency bands if Ant2 is used in
shared Diversity/MIMO/GNSS mode.
VSWR of Ant1 and
Ant2
< 2:1 (recommended)
< 3:1 (worst case) On all bands including band edges
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EM9191Hardware Integration Guide
RF Specifications
17
Parameter Requirements Comments
Total Radiated
Efficiency > 50% on all bands
Measured at the RF connector.
Includes mismatch losses, losses in the
matching circuit, and antenna losses,
excluding cable loss.
Dejero Labs Inc recommends using
antenna efficiency as the primary
parameter for evaluating the antenna
system.
Peak gain is not a good indication of
antenna performance when integrated
with a host device (the antenna does not
provide omni-directional gain patterns).
Peak gain can be affected by antenna
size, location, design type, etc. — the
antenna gain patterns remain fixed
unless one or more of these parameters
change.
Radiation Patterns Nominally Omni-directional radiation
pattern in azimuth plane.
Envelope
Correlation
Coefficient between
Ant
< 0.5 on Rx bands below 960 MHz
< 0.2 on Rx bands above 1.4 GHz
Mean Effective Gain
of Ant1 and Ant2
(MEG1, MEG2)
≥-3 dBi
Ant1 and Ant2
Mean Effective Gain
Imbalance
| MEG1 / MEG2 |
< 2 dB for MIMO operation
< 6 dB for diversity operation
Maximum Antenna
Gain
Must not exceed antenna gains due to
RF exposure and ERP/ EIRP limits, as
listed in the module’s FCC grant.
See Important Compliance Information for
the United States and Canada.
Isolation
>10dB for all antennas at all bands
frequency range.
>20dB for Ant1 and Ant4 at B41
frequency range.
If antennas can be moved, test all
positions for both antennas.
Make sure all other wireless devices
(Bluetooth or WLAN antennas, etc.) are
turned OFF to avoid interference.
Power Handling >1W
Measure power endurance over 4 hours
(estimated talk time) using a 1 W CW
signal — set the CW test signal
frequency to the middle of each
supporting Tx band.
Visually inspect device to ensure there is
no damage to the antenna structure and
matching components.
VSWR/TIS/TRP measurements taken
before and after this test must show
similar results.
1. These worst-case VSWR figures for the transmitter bands may not guarantee RSE levels to be within regulatory limits.
The device alone meets all regulatory emissions limits when tested into a cabled (conducted) 50Ω system. With antenna
designs with up to 2.5:1 VSWR or worse, the radiated emissions could exceed limits. The antenna system may need to be
tuned in order to meet the RSE limits as the complex match between the module and antenna can cause unwanted levels
of emissions. Tuning may include antenna pattern changes, phase/delay adjustment, passive component matching.
Examples of the application test limits would be included in FCC Part 22, Part 24 and Part 27, test case 4.2.2 for WCDMA
(ETSI EN 301 908-1), where applicable.
2. Ant1 - Primary, Ant2 - Secondary (Diversity/GNSS L1), Ant3 - MIMO1 Rx path and n41 TRx, Ant4 - MIMO2 Rx path,
n41 DRx path and GNSS L5.
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EM9191Hardware Integration Guide
RF Specifications
18
3.7.2. Recommended GNSS Antenna Specifications
Table 3-7 GNSS Antenna Requirements
Parameter Requirements Comments
Frequency Range
Wide-band GNSS: 1559–1606 MHz
recommended
Narrow-band GPS: 1575.42 MHz ±2 MHz
minimum
Narrow-band Galileo: 1575.42 MHz ±2 MHz
minimum
Narrow-band BeiDou: 1561.098 MHz ±2 MHz
minimum
Narrow-band GLONASS: 1601.72 MHz ±4.2
MHz minimum
Narrow-band QZSS: 1575.42 MHz ±2 MHz
minimum
Field of View (FOV) Omni-directional in azimuth
-45° to +90° in elevation
Polarization (Average
Gv/Gh) >0 dB Vertical linear polarization is sufficient.
Free Space Average
gain (Gv+Gh) over
FOV
> -6 dBi (preferably > -3 dBi)
Gv and Gh are measured and
averaged over -45° to +90° in
elevation, and ±180° in azimuth.
Gain
Maximum gain and uniform coverage in the
high elevation angle and zenith.
Gain in azimuth plane is not desired.
Average 3D Gain > -5 dBi
Isolation between
GNSS and ANTx for
WWAN Tx
> 15 dB in all uplink bands and GNSS Rx
Bands
Typical VSWR < 2.5:1
Polarization Any other than LHCP (left-hand circular
polarized) is acceptable.
Note: GNSS active antenna is forbidden to use.
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19
4. Regulatory Compliance and
Industry Certification
This module is designed to meet, and upon commercial release, will meet the requirements of the
following regulatory bodies and regulations, where applicable:
Federal Communications Commission (FCC) of the United States
The National Communications Commission (NCC) of Taiwan, Republic of China
The Certification and Engineering Bureau of Industry Canada (IC)
The European Union Radio Equipment Directive 2014/53/EU and RoHS Directive 2011/65/EU
Russia Federal Agency of Communication (FAC)
China CCC, NAL and SRRC
South Korea KCC
Additional testing and certification may be required for the end product with an embedded
EM9191module and are the responsibility of the OEM.
4.1. Important Notice
Because of the nature of wireless communications, transmission and reception of data can never be
guaranteed. Data may be delayed, corrupted (i.e., have errors) or be totally lost. Although significant
delays or losses of data are rare when wireless devices such as the Dejero Labs Inc module are used
in a normal manner with a well-constructed network, the Dejero Labs Inc module should not be used
in situations where failure to transmit or receive data could result in damage of any kind to the user or
any other party, including but not limited to personal injury, death, or loss of property. Dejero Labs Inc
and its affiliates accept no responsibility for damages of any kind resulting from delays or errors in
data transmitted or received using the Dejero Labs Inc module, or for failure of the Dejero Labs Inc
module to transmit or receive such data.
4.2. Safety and Hazards
Do not operate your EM9191module:
August 22,2022
In areas where blasting is in progress
Where explosive atmospheres may be present including refueling points, fuel depots, and
chemical plants
Near medical equipment, life support equipment, or any equipment which may be susceptible to
any form of radio interference. In such areas, the EM9191module MUST BE POWERED OFF.
Otherwise, the EM9191module can transmit signals that could interfere with this equipment.
In an aircraft, the EM9191module MUST BE POWERED OFF.Otherwise, the EM9191module can
transmit signals that could interfere with various onboard systems and may be dangerous to the
operation of the aircraft or disrupt the cellular network. Use of a cellular phone in an aircraft is illegal in
some jurisdictions. Failure to observe this instruction may lead to suspension or denial of cellular
telephone services to the offender or legal action, or both.
Some airlines may permit the use of cellular phones while the aircraft is on the ground and the door is
open. The EM9191module may be used normally at this time.

Regulatory Compliance and Industry Certification
EM9191Hardware Integration Guide
20
4.3. Important Compliance Information for the
United States and Canada
The EM9191module, upon commercial release, will have been granted modular approval for mobile
applications. Integrators may use the EM9191module in their final products without additional FCC/
IC (Industry Canada) certification if they meet the following conditions. Otherwise, additional FCC/IC
approvals must be obtained.
1. At least 20 cm separation distance between the antenna and the user’s body must be maintained
at all times.
2. To comply with FCC/IC regulations limiting both maximum RF output power and human exposure
to RF radiation, the maximum antenna gain including cable loss in a mobile-only exposure
condition must not exceed the limits stipulated in Table 4-1.
3. The EM9191module may transmit simultaneously with other collocated radio transmitters within
a host device, provided the following conditions are met:
Each collocated radio transmitter has been certified by FCC/IC for mobile application.
At least 20 cm separation distance between the antennas of the collocated transmitters and
the user’s body must be maintained at all times.
The radiated power of a collocated transmitter must not exceed the EIRP limit stipulated in
Table 4-1.
Table 4-1 Antenna Gain and Collocated Radio Transmitter Specifications
Device Operating Mode Tx Freq
Range (MHz)
Max Time-
Avg Cond.
Power
(dBm)
Antenna Gain Limit (dBi)
Standalone Collocated
EM9191
WCDMA Band 2 1850 1910 24.5 8.5
8
WCDMA Band 4 1710 1755 24.5 5.5 5.5
WCDMA Band 5 824 849 24.5 6 5.5
LTE B2 1850 1910 24 8.5 8
LTE B4 1710 1755 24 5.5 5.5
LTE B5 824 849 24 6 5.5
LTE B7 2500 2570 24.8 5.5 5.5
LTE B12 699 716 24 5.5 5
August 22,2022
LTE B13 777 787 24 5.5 5
LTE B14 788 798 24 5.5 5
LTE B17 704 716 24 5.5 5
LTE B25 1850 1915 24 8.5 8
LTE B26 814 849 24 6 5.5
LTE B30 2305 2315 24 0 0
LTE B38 2570 2620 24.8 7 7