Continental Refrigerator FE4RW0110 Leitfaden

FE4RW0110

OEM Manual and User Guide v 4.2

(to be used for certification)

FCC ID: LHJ-FE4RW0110

Terms and Acronyms

CDMA

Code Division Multiple Access

UMTS

Universal Mobile Telecommunication System

WCDMA

Wideband Code Division Multiple Access

LTE

Long Term Evolution

LTE-A

LTE-Advanced

GLONASS

GLObalnaya NAvigatsionnaya Sputnikovaya Sistema

GNSS

Global Navigation Satellite System

DCM-TCU

Data Connectivity Module

DRX

Discontinuous Reception

Engineering Sample

FDD

Frequency Division Duplex

GPIO

General Purpose Input Output

GSM

Global System for Mobile

USB host

HSIC

High Speed Inter-Chip

PCIe

Peripheral Component Interconnect Express

Mass Production

NAD

Network Access Device

OEM

Original Equipment Manufacturer

PCB

Printed Circuit Board

PHY

Physical Layer

SIM

Subscriber Identity Module

TDD

Time Division Duplex

TSP

Telematics Service Provider

FE4RW0110

The FE4RW0110 NAD is proprietary embedded module designed by Continental Automotive Systems,

Inc. The modules will be integrated into Data Connectivity Modules (DCM-TCUs) or USB hosts (HUs)

designed and produced by Continental or by a 3rd party for use by automotive OEMs. DCM-TCUs will

be installed into vehicles during the OEM’s factory assembly process and will not be accessible without

use of special tools. Primary use-cases are data-centric with data and voice connections to Telematics

Service Providers (TSP).

1Key Features

Air Interface Support

•LTE FDD: 3GPP Rel 14

•LTE FDD: DL Category-9 / UL Category-5

•UMTS: HSUPA CAT6 (up to 5.76-Mbps), HSPA CAT14 (up to 21-Mbps) or HSPA CAT24 (up to 42-

Mbps) depending on configuration

•VoLTE –HD Voice

•Embedded Qualcomm GNSS Sub-system, Gen9v2

•GPS, Glonass, Beidou, Galileo Receiver

•SBAS supported: EGNOS/MSAS/QZSS/WAAS/GAGAN

•Able to track ~40 channels simultaneously

2Regulatory Compliance Notes

Europe:

Hereby, Continental Automotive Systems, Inc, declares that the radio equipment type FE4RW0110 is in

compliance with Directive 2014/53/EU. The full test of the EU Declaration of Conformity is available at

the following internet address:

https://www.continental-homologation.com/en-gl/General-Motors

FCC:

This device complies with Part 15, Part 22(H), Part 24(E) and Part 27 of the FCC Rules. The FCC ID for

this device is LHJ-FE4RW0110. Operation is subject to the following two conditions:

1. This device may not cause harmful interference.

2. This device must accept any interference received, including interference that may cause undesired

operation.

Material Statement:

The End of Life Vehicle Directive (EVL) must be applied to the FE4RW0110 module. This means that

the component is included into the overall vehicle (since it is permanently installed) and if the explanation

of the materials used and, if applicable, disposal descriptions from the vehicle manufacturer.

3Device Installation and User Manual

The FE4RW0110 modules are proprietary product designed and manufactured by Continental

Automotive Systems, Inc. for integration into telematics control units manufactured by Continental

Automotive Systems, Inc.

I. The module is limited to installation ONLY in an integrated device manufactured by Continental

Automotive Systems, Inc.

II. During manufacturing process of the integrated device, the module is soldered onto the pcb of the

integrated device.

III. The integrated device must provide RF connectors to external antennas or RF traces to connect the

FE4RW0110 modules to antennas inside the integrated device. The typical reference design for

the RF trace layout, including pcb stack-up and trace length is described in Section 6 of this

document.

IV. Automotive OEM is responsible for ensuring that the end-user has no manual instructions to

remove or install module.

V. The module is limited to installation in mobile applications, according to Part 2.1091(b).

VI. No other operation configurations are allowed.

VII. Changes or modifications to this system by other than a facility authorized by Continental could

void authorization to use this equipment.

VIII. The module does not have a pre-defined antenna. The module must be installed to provide a

separation distance of at least 20 cm from all persons and antenna. Under No conditions may an

antenna gain be used that would exceed the ERP and EIRP power limit as specified in Part 22,

Part 24 and Part 27.

IX. The module must be installed to provide a separation distance of at least 20 cm from all persons

and antenna and must not be co-located or operate in conjunction with any other antenna or

transmitter, except in accordance with FCC multi-transmitter evaluation procedures as

documented in this filing. Additional testing and certification for SAR will be required if the

distance limitation cannot be met.

X. The integrator is responsible for fulfilling FCC and IC requirements for the integrated device. The

module must be installed to provide a separation distance of at least 20 cm from all persons and

antenna. SAR is related to the final product’s implementation and should be assessed based on its

proximity to human body.

If Continental chooses to re-use modular approval, then the TCU shall be clearly labeled with an external

label containing the integrated modem’s FCC ID. For example, the label can include text “Contains

device with FCC ID: LHJ-FE4RW0110”.

4Antenna requirements for use with FE4RW0110 modules:

•The FE4RW0110 modules are for use with external antennas ONLY.

•Based on FCC OET Bulletin 65 Supplement C and 47 CRF §2.1091, for all standalone

LTE/WCDMA/GSM operations the maximum antenna gain including cable loss shall not exceed

the following values:

oGSM850: 4.5 dBi

oGSM1900: 2.5 dBi

oUMTS Band II: 2.5 dBi

oUMTS Band IV: 5.5 dBi

oUMTS Band V: 4.5 dBi

oLTE Band 2: 2.5 dBi

oLTE Band 4: 5.5 dBi

oLTE Band 5: 4.5 dBi

oLTE Band 7: 9.0 dBi

oLTE Band 38: 9.0 dBi

oLTE Band 41: 9.0 dBi

•This radio transmitter (FCC ID: LHJ-FE4RW0110) has been approved by FCC to operate with

the antenna types listed below with the maximum permissible gain indicated. Antenna types not

included in this list, having a gain greater than the maximum gain indicated for that type, are

strictly prohibited for use with this device.

•Based on EN 62311;2020 and EN 50665:2017, for all standalone LTE/WCDMA/GSM operations

the maximum antenna gain including cable loss shall not exceed the following values:

oGSM900: 6.5 dBi

oGSM1800: 11.5 dBi

oUMTS Band 1: 12.0 dBi

oUMTS Band 3: 11.5 dBi

oUMTS Band 8: 6.5 dBi

oLTE Band 1: 12.0 dBi

oLTE Band 3: 11.5 dBi

oLTE Band 7: 13.0 dBi

oLTE Band 8: 6.5 dBi

oLTE Band 20: 9.0 dBi

oLTE Band 28: 8.0 dBi

oLTE Band 38: 13.0 dBi

oLTE Band 40: 13.0 dBi

5Instructions to OEMs:

Continental must instruct the automotive OEM and provide them to include the following information

into the car user’s manual:

1. End-users must be provided with transmitter/antenna installation requirements and operating

conditions for satisfying RF exposure compliance:

2. A separate section should clearly state “FCC RF Exposure requirements:”

3. Required operating conditions for end users.

4. The antenna used with this device must be installed to satisfy RF exposure compliance. The

antenna gain, including cable loss, must not exceed values listed above.

5. Under no conditions may an antenna gain be used that would exceed the ERP and EIRP power

limits as specified in Parts 15, 22H, 24E, and 27.

6. Clear instructions describing the other party’s responsibility to obtain station licensing.

6Layout and Routing Recommendations

6.1 Module Specific

The pad spacing of 0.7mm should allow the placement of a 450um finished VIA between pads, while

maintaining a 125um via-to-trace or via-to-pad spacing, to facilitate the breakout of inner row

signals. The 0.7mm spacing is also large enough to route two 160um (6mil) traces between pads.

Figure 1: Vias placed between Pads

6.2 RF Traces for antennas

The NAD has eight antenna pins.

•LTE_ANT_1

•LTE_ANT_2

•LTE_ANT_3

•LTE_ANT_4

•GNSS_ANT_1

•GNSS_ANT_2

•CV2X_ANT_1

•CV2X_ANT_2

Multi-transmission is not possible. The figure below shows the general breakout of the module:

Figure 2: NAD Pin Breakout

The FE4RW0110NADs should be oriented on the main board to minimize the length of the primary LTE

TX/RX antenna (LTE_ANT_1). This 50ohm line should be as short as possible to the external RF

connector or internal antenna feed point.

The RF traces from the NAD antenna pins on the main board can be stripline or microstrip.

For routing microstrip lines UNDERNEATH the NAD on layer 1, these ground cutouts internal to the

NAD need to be accounted for in the stripline calculation. The internal GND height and dielectric

constant of the NAD board are shown below:

H = 19.3 mils (491 micron)

Dielectric Constant = 4.1

For example, consider the following stackup for a main PCB:

Figure 3: Recommended PCB Stack-up

Assume the main PCB above with a 6 layer stack up with ground cut away on layer 2 so the microstrip

lines reference ground on layer 3. The dielectric thickness from L1 to L3 is 21.2 mils.

Using an online impedance calculator, the line width under the NAD for a 50 ohm line is 15.9mils

(405micron) shown below:

Figure 4: Stripline Impedance Calculations

The calculation for the microstrip line width outside the NAD is 37.7mils (967micron) shown below:

Figure 5: Microstrip Impedance Calculations

Due to the nature of the weave chosen for each PCB, the dielectric constant of the NAD board is 4.1 while

the main board is 4.3. A dielectric constant of 4.2 was chosen in the stripline calculation, while 4.3 was

used for the microstrip calculation.

Main board stack up may vary so these line widths may need to be recalculated. IT IS HIGHLY

RECOMMENDED TO USE A SIMILAR STACKUP AS SHOWN IN FIGURE 3.

Antenna Routing Recommendations:

1. Microstrip routes on layer1 and very short route under the NAD.

Figure 6: Antenna Line Microstrip Routes on Layer1

2. Then routes to inner layer and continues route as stripline.

Figure 7: Antenna Line Stripline Routes On Inner Layer

These line widths may vary depending on the stack up selected for the main board.

6.3 RF Antenna Layout Parameters

Type of Guidance

Requirement

Trace impedance

50-Ohms ± 10% single-ended

Total route length

<100-mm

Ground between signals

> 1 x line width of ground trace between, stitched VIA to ground

Ground between signals

> 3 x line width of ground trace between, stitched VIA to ground

Spacing to other signals

< 3:1

•The RF signals should be routed STRAIGHT OUT OF THE NAD TO THE NEAREST EDGE along

similar route pat but separated by ground trace.

•Trace impedances should match the table, either as microstrip or stripline.

•Total length for both signals should be kept to a minimum always optimizing the PRIMARY_ANT

(LTE_ANT_1) path.

•Spacing to ground or other signals on outside of bundled signals should match the table.

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