Quectel EG21-G - Functional Diagram

LTE Module Series
EG21-G Hardware Design
EG21-G_Hardware_Design 14 / 100
Antenna Interfaces
Including main antenna interface (ANT_MAIN), Rx-diversity antenna
interface (ANT_DIV) and GNSS antenna interface (ANT_GNSS)
Physical Characteristics
Size: (29.0±0.15)mm × (32.0±0.15)mm × (2.4±0.2)mm
Weight: approx. 4.9g
Temperature Range
Operation temperature range: -35°C ~ +75°C
1)
Extended temperature range: -40°C ~ +85°C
2)
Storage temperature range: -40°C ~ +90°C
Firmware Upgrade
USB interface or DFOTA*
RoHS
All hardware components are fully compliant with EU RoHS directive.
1.
1)
Within operation temperature range, the module is 3GPP compliant.
2.
2)
Within extended temperature range, the module remains the ability to establish and maintain a
voice, SMS, data transmission, emergency call, etc. There is no unrecoverable malfunction. There
are also no effects on radio spectrum and no harm to radio network. Only one or more parameters like
P
out
might reduce in their value and exceed the specified tolerances. When the temperature returns to
normal operation temperature levels, the module will meet 3GPP specifications again.
3. “*” means under development.
2.3. Functional Diagram
The following figure shows a block diagram of EG21-G and illustrates the major functional parts.
 Power management
 Baseband
 DDR+NAND flash
 Radio frequency
 Peripheral interfaces
NOTES