Functional Diagram - Quectel EC20 Hardware Manual

Rx-diversity
AT Commands
Physical Characteristics
Temperature Range
Firmware Upgrade
RoHS
NOTES
1. "*" means this function is under development.
▲
2. " " means when the module works within this temperature range, RF performance might degrade.
For example, the frequency error or the phase error may increase.

2.4. Functional Diagram

The following figure shows a block diagram of EC20 Mini PCIe.
VCC
USB
PCM&I2C
UART
USIM
W_DISABLE#
PERST#
DTR
RI
LED_WWAN#
EC20_Mini_PCIe_Hardware_Design
Protocol: NMEA 0183
Support LTE/UMTS Rx-diversity
Compliant with 3GPP TS 27.007, 27.005 and Quectel enhanced AT
commands
Size: 51.0mm × 30.0mm × 4.9mm
Weight: approx. 9.8g
Normal operation: -30° C ~ +70° C
Restricted operation: -40° C ~ -30° C and +70° C ~ +80° C
Storage temperature: -45° C ~ +90° C
USB interface
All hardware components are fully compliant with EU RoHS directive
VBAT
Boost
Circuit
USIM Holder
(Optional)
Figure 1: Functional Diagram
Confidential / Released
EC20 Mini PCIe Hardware Design
Antenna
Interface
EC20
Antenna
Module
Interface
Diversity
Antenna
Interface
LTE Module Series
▲
Main
Main
Antenna
GNSS
GNSS
Antenna
Diversity
Antenna
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