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Fibocom FM101-CG, Руководство по оборудованию

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•

RF ground shall be designed properly, PCB board and edge of ground shall be
provided with "ground wall", and antenna led from RF module shall be made into
microstrip line.

•

The antenna RF feeding point pad is a round rectangular pad with the size of 2 mm

× 

3 mm. All layers of PCB that include the pad and surrounding and that are equal

to and greater than 0.8 mm are not covered with copper.

•

The center distance between RF and ground pad shall be between 4 mm and 5 mm.

6.8.2.2. Internal Antenna Classification

There are three kinds of internal antennas: PIFA, IFA and monopole. Internal antennas
may form interference and other potential problems in the product, so there are more
requirements in the design.
The following table describes the differences of these three types of antennas.

Table 33. Antenna differences

Antenna
Type

Below
Antenna
Projection

Antenna
Feed

Antenna
Volume

Electrical
Property

SAR

PIFA

Ground

2

Large

Very good

Low

MONOPOLE No ground

1

Small

Good

Slightly high

IFA

Ground

2

Medium

About good

Medium

PIFA antenna

•

Antenna structure

There are two feeding points between the antenna and main board, one is module
output, and the other is RF ground. It is recommended to design the antenna on
the top of the device. The distance between the signal point and GND point should
be at least 4 mm to 5 mm. The signal point and GND point can be put in different
places, and more GND points mean more choices during antenna design.

6. Radio Frequency

Copyright © Fibocom Wireless Inc.

52

Содержание FM101-CG

Страница 1: ...FM101 CG Hardware Guide V1 0...

Страница 2: ...g to the product version upgrade or other reasons Unless otherwise specified the document only serves as the user guide All the statements information and suggestions contained in the document do not...

Страница 3: ...1 2 4 Functional Block Diagram 11 2 5 Evaluation Board 12 3 Pin Definition 13 3 1 Pin Distribution 13 3 2 Pin Function 14 4 Electrical Characteristics 21 4 1 Limit Voltage Range 21 4 1 1 Absolute Limi...

Страница 4: ...outing Rules 35 5 6 I 2 C Interface 36 5 7 PCM and I 2 S Digital Audio Interface 36 5 7 1 PCM Interface Definition 36 5 7 2 PCM Application Circuit 37 5 8 PCIe Interface 38 5 8 1 PCIe Routing Rules 39...

Страница 5: ...ion 52 6 8 3 Surrounding Environment Design of Internal Antenna 57 6 8 3 1 Handling of Speaker 57 6 8 3 2 Handling of Metal Structural Parts 57 6 8 3 3 Handling of Battery 57 6 8 3 4 Location of Large...

Страница 6: ...Appendix A Acronyms and Abbreviations 67 Contents Copyright Fibocom Wireless Inc 4...

Страница 7: ...Change History V1 0 2021 11 17 Initial version Change History Copyright Fibocom Wireless Inc 5...

Страница 8: ...Fibocom Wireless does not assume any responsibility for the consequences caused by users misuse because they do not comply with these safety rules Road safety first When you are driving do not use any...

Страница 9: ...gnal Your mobile device receives and transmits RF signals when it is powered on Your mobile device will receive and transmit RF signals when it is turned on RF interference occurs when it is near a TV...

Страница 10: ...te supported in CA mode is 261 Mbps and the maximum uplink rate is 30 Mbps FM101 CG is designed with M 2 package and is applicable to various scenarios such as CPE VR AR gateway Internet TV set top bo...

Страница 11: ...28 GHz Storage 2Gb LPDDR2 2Gb NAND Flash Supported systems Linux Android Windows Power class Class 3 23dBm 2dB for LTE bands Satellite positioning GPS GLONASS Galileo BDS SMS Support Audio interface S...

Страница 12: ...range and the related performance meets the requirements of 3GPP standards Extended temperature 40 C to 85 C The module works normally within this temperature range and the baseband and RF functions a...

Страница 13: ...k Diagram Functional block diagram shows the main hardware functions of the FM101 CG module including the baseband and RF functions Baseband section CPU PMIC LPDDR2 NAND USB PCIe U SIM PCM I 2 S I 2 C...

Страница 14: ...l block diagram 2 5 Evaluation Board Fibocom provides EVB M 2 evaluation board to facilitate module debug and testing For how to use it see FIBOCOM EVB M2 User Guide 2 Product Overview Copyright Fiboc...

Страница 15: ...inition 3 1 Pin Distribution The FM101 CG module uses M 2 packaging and have 75 pins in total The following figure shows the pin mapping Figure 2 Pin mapping 3 Pin Definition Copyright Fibocom Wireles...

Страница 16: ...Power input Power supply 3 GND Ground Power supply 4 VCC PI Power input Power supply 5 GND Ground Power supply 6 FULL_CARD_ POWER_OFF DI PU Module on off control high level on low level off internal...

Страница 17: ...I2S_SCK DO PD I 2 S serial clock reserved CMOS 1 8V 21 CONFIG_0 NC NC WWAN PCIe is configured for FM101 CG module USB_SS interface type M 2 module 22 I2S_RX DI PD I 2 S serial data receiving reserved...

Страница 18: ...DO L SIM card 1 reset CMOS 3V 1 8V 31 USB_SS_TX_P AO Ultra high speed USB data transmitting positive 32 UIM1_CLK DO L SIM card 1 clock CMOS 3V 1 8V 33 GND Ground Power supply 34 UIM1_DATA DIO L SIM c...

Страница 19: ...d CMOS 3V 1 8V 43 PETp0 DO PCIe data transmitting positive 44 UIM2_CLK DO L SIM card 2 clock SPI_CLK Reserved CMOS 3V 1 8V 45 GND Ground Power supply 46 UIM2_RESET DO L SIM card 2 reset SPI_CS Reserve...

Страница 20: ...V 55 REFCLKP DIO PCIe reference clock differential positive signal 56 RFFE_SCLK DO PD RFFE MIPI serial clock signal I2C_SCL Reserved CMOS 1 8V 57 GND Ground Power supply 58 RFFE_SDATA DIO PD RFFE MIPI...

Страница 21: ...U SIM card 1 detection external pull up and pull down are required A card is available at high level by default CMOS 1 8V 67 RESET_N DI PU Module reset Active low CMOS 1 8V 68 I2S_MCLK DO I2S MCLK clo...

Страница 22: ...ce type M 2 module Pins marked with are reserved functions or under development Unused pins remain floating Table 7 I O parameter description Type Description PI Power input PO Power output DI Digital...

Страница 23: ...ng table describes the absolute limit voltage ranges of FM101 CG module Table 8 Absolute limit voltage range Parameter Description Minimum Value V Typical Value Maximum Value V VBAT Power supply 0 3 3...

Страница 24: ...USB sleep and wakeup see Fibocom_FM101_AT Commands User Manual Table 11 Power consumption Parameter Mode Status Average Current Typical Value mA Ioff Power off Module power off 0 06 Isleep TDD LTE Pag...

Страница 25: ...ower consumption 2CA Typical Combination Transmitting Band FRB Data Transmission Status Typical Current mA 42C B42 B42 21dBm TBD 48C B48 B48 21dBm TBD 4 Electrical Characteristics Copyright Fibocom Wi...

Страница 26: ...BAT PI 2 4 70 72 74 Module power supply 3 135V 4 4V 3 8V is recommended GND G 3 5 11 27 33 39 45 51 57 71 73 GND all GND pins must be grounded Power Input The FM101 CG module is powered on through the...

Страница 27: ...sed by clock and digital signals 33pF 850 MHz 900 MHz band Filter out low band RF interference 8 2pF 1800 1900 2100 2300 2500 2600 MHz band Filter out middle high band RF interference Stable power sup...

Страница 28: ..._ POWER_OFF 3 3V 1 8V DI 6 Module on off signal pull up to power on and pull down to power off In the power off state pull up the FCP for more than 1 2s The module is powered on 5 2 1 Power on off 5 2...

Страница 29: ...ensure that the VBAT voltage is stable It is recommended that the time interval between powering on VBAT and pulling low or high the power on control pin is not less than 40ms The power on control is...

Страница 30: ...FM101 CG module can be reset by hardware and software Table 16 Reset methods Reset Method Action Hardware reset Pull down the RESET_N pin for 0 5s or more and then release Software reset Send the AT...

Страница 31: ...east 20 seconds between two reset operations The RESET pin can be internally pulled up without external pull up Keep the pin floating when it is not used 5 3 LED1 The LED1 signal is used to indicate t...

Страница 32: ...nterface FM101 CG module has built in U SIM card interface and supports 1 8 V and 3 0 V U SIM cards 5 4 1 U SIM Pin Definition U SIM pin definition is described in the following table Table 18 U SIM p...

Страница 33: ...DETECT DI USIM1 detection Active high by default And high level indicates a SIM card is inserted and low level indicates a SIM card is removed 1 8V 5 4 2 U SIM Interface Circuit U SIM Card Slot with C...

Страница 34: ...G series module supports the U SIM card hot plug function The module detects the status of the USIM1_DET USIM2_DET pin to determine whether a U SIM card is inserted or removed USIM1_DET USIM2_DET is a...

Страница 35: ...module to the U SIM card slot shall not exceed 100 mm Longer cable will reduce signal quality The USIM_CLK and USIM_DATA signal lines are grounded and isolated to avoid mutual interference If conditi...

Страница 36: ..._DP AIO 7 USB 2 0 differential data signal USB_DM AIO 9 USB 2 0 differential data signal USB_SS_TX_M AO 29 USB 3 0 differential transmitting signal USB_SS_TX_P AO 31 USB 3 0 differential transmitting...

Страница 37: ...GND all around 5 5 2 2 USB 3 0 Routing Rules USB_SS_RX_P USB_SS_RX_M and USB_SS_TX_P USB_SS_TX_M are two groups of differential signals with differential impedance controlled at 90 7 the trace length...

Страница 38: ...the standard I 2 C specification version 3 0 is applied I 2 C external pull up is required See Figure 14 for reference design Table 21 I 2 C pin definition Pin Name Pin Number Type Description I2C_SD...

Страница 39: ..._WS Reserved UART1_TX Reserved I2S_MCLK DO 68 I 2 S main clock signal reserved Default transmission clock frequency is TBD MHz sampling rate is TBD KHz and resolution is TBD bit The PCM channel can al...

Страница 40: ...Tp0 DO 43 PCIe data transmitting signal positive PERn0 DI 47 PCIe Data receiving signal negative PERp0 DI 49 PCIe Data receiving signal positive PERST DI 50 PCIe mode reset signal CLKREQ DIO 52 PCIe c...

Страница 41: ...hould be close to that of signal and generally each pair of signals require 1 3 ground signal via holes and the traces shall never cross the segment of plane Try to avoid bended traces and avoid intro...

Страница 42: ...o specific requirements for the length match of transmitting pair and receiving pair that is the length match is only required in the internal differential lines rather than between different differen...

Страница 43: ...lowing table Table 24 W_DISABLE_N pin description Pin Name I O Pin Number Description W_DISABLE_N DI 26 Module flight mode control internal pulled up by default FM101 CG module supports two ways as de...

Страница 44: ...When AT GTFMODE 0 run the AT CFUN 0 command to enter flight mode run the AT CFUN 1 command to enter normal mode 5 10 Sleep Wakeup Interface When the module is in sleep mode the module can be awakened...

Страница 45: ...ure M refers to the RF main antenna for receiving and transmitting RF signals D refers to the diversity antenna for receiving diversity RF signals G refers to GNSS antenna 6 1 2 RF Connector Performan...

Страница 46: ...tors the model name is 818004607 from ECT company and the connector dimensions are 2 mm 2 mm 0 6 mm as shown in the following figure Figure 18 RF connector dimensions Figure 19 0 81 mm coaxial cable m...

Страница 47: ...MHz Band 42 LTE TDD 3400 3600 3400 3600 Band 43 LTE TDD 3600 3800 3600 3800 Band 48 LTE TDD 3550 3700 3550 3700 6 3 Transmitting Power The following table describes the RF output power of FM101 CG mo...

Страница 48: ...GPS GLONASS BDS GALILEO and the performance parameters of GNSS are shown in the following table Table 30 GNSS performance parameters Indicator Performance Description Result Unit Sensitivity Cold sta...

Страница 49: ...0dBi 6 7 PCB Routing Design 6 7 1 Routing Rules For modules that don t have a RF connector customers need to route a RF trace to connect to the antenna feeding point or connector It is recommended to...

Страница 50: ...s and stacking Different reference GND layer will lead to different routing design 6 7 3 3W Principle During antenna RF signal cabling design on PCB the first thing you need to consider is to follow 3...

Страница 51: ...r Mask Lay 1 0 33OZ Plating 25 PP 1080 65 Lay 2 0 5OZ Plating 25 0 510 mm H H OZ 508 Lay 3 0 510 mm Plating 25 PP 1080 65 Lay 4 0 33OZ Plating 25 Solder Mask The thickness from Lay 1 to Lay 2 is 65 um...

Страница 52: ...4 Impedance calculation for four layer board top layer trace 6 8 Main Antenna Design 6 8 1 External Antenna The external antenna has good performance The antenna is placed outside the complete machine...

Страница 53: ...l be arranged in the corners of the module Avoid placing metal elements near the antenna The shielding parts shall be as neat as possible Do not use long strip shaped hole slots Components with metal...

Страница 54: ...the product so there are more requirements in the design The following table describes the differences of these three types of antennas Table 33 Antenna differences Antenna Type Below Antenna Projecti...

Страница 55: ...heet are fixed by hot melt method The plastic is made of BS or PC material the metal sheet is beryllium copper phosphor copper or stainless steel If you want to use FPC add two pins in the main board...

Страница 56: ...m 45mm For details about LTE antenna design refer to the area requirement of GSM antenna Monopole antenna Antenna structure There is one feeding point between the antenna and main board which is modul...

Страница 57: ...proved if the board length is 95mm Antenna PCB motherboard Figure 29 Requirements for antenna projection area Structure of monopole antenna For details see Structure of PIFA antenna Feed point of mono...

Страница 58: ...has two feeding branches and allows ground under the antenna The antenna has better stability than Monopole antenna and the antenna space requirement is between Monopole antenna and PIFA antenna PCB m...

Страница 59: ...be grounded correctly and reliably and the circuit part must be shielded 6 8 3 3 Handling of Battery The battery should be far away from antenna Monopole antenna The distance between battery and anten...

Страница 60: ...not spray the cover of the antenna with conductive paint be cautious when you use plating Figure 31 Location of large components 6 8 4 Common Problems of Internal Antenna Overall Design Factors that...

Страница 61: ...y absorb the antenna radiated power and produce a certain amount of secondary radiation and coupling frequency is associated with the size of metal parts Therefore this kind of component should have a...

Страница 62: ...good correlation coefficient Customers need to evaluate two indexes separately The isolation and correlation coefficient of antenna generally depend on Antenna isolation Antenna type Antenna directivi...

Страница 63: ...o ensure that the heat of the module can be released through the motherboard The following fogure shows the design Other measures to improve heat dissipation performance are as follows Heat devices an...

Страница 64: ...final product In addition to ESD in packaging customers should consider the recommended circuit of the interface design in the document during module application The following table describes the ESD...

Страница 65: ...the FM101 CG module is shown in the following figure Figure 32 Product appearance 9 2 Structural Dimensions The structural dimensions of the FM101 CG module is shown in the following figure The unit...

Страница 66: ...the processes of storage transportation and usage The module is a precision electronic product and may suffer permanent damage if no correct electrostatic protection measures are taken Tray Package T...

Страница 67: ...ule is 330 mm 175 mm 6 5 mm as shown in the following figure Figure 35 Tray size unit mm 9 4 Storage Storage conditions recommended The temperature is 23 5 and the relative humidity is less than RH 60...

Страница 68: ...Storage period Under the recommended storage conditions the storage life is 12 months 9 Structural Specifications Copyright Fibocom Wireless Inc 66...

Страница 69: ...ous Reception Imax Maximum Load Current LED Light Emitting Diode LTE Long Term Evolution ME Mobile Equipment MS Mobile Station MT Mobile Terminated PCB Printed Circuit Board PDU Protocol Data Unit RF...

Страница 70: ...m Normal Voltage Value Vmin Minimum Voltage Value VIHmax Maximum Input High Level Voltage Value VIHmin Minimum Input High Level Voltage Value VILmax Maximum Input Low Level Voltage Value VILmin Minimu...

Страница 71: ...High Level Voltage Value VOLmax Maximum Output Low Level Voltage Value VOLmin Minimum Output Low Level Voltage Value VSWR Voltage Standing Wave Ratio Appendix A Acronyms and Abbreviations Copyright Fi...

Страница 72: ...e guidance to the host manufacturer for Part 15 B requirements if needed Important Note notice that any deviation s from the defined parameters of the antenna trace as described by the instructions re...

Страница 73: ...s Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is c...

Страница 74: ...na As long as 2 conditions above are met further transmitter test will not be required However the OEM integrator is still responsible for testing their end product for any additional compliance requi...

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