Quectel UC20

UMTS/HSPA Module Series
UC20 Hardware Design
UC20_Hardware_Design Confidential / Released 60 / 84
active antenna.
Table 28: GNSS Frequency
Type
Frequency
Unit
GPS
1575.42±1.023
MHz
GLONASS
1597.5~1605.8
MHz
5.2.1. Reference Design for Passive Antenna
Passive
antenna
MAX2659
Module
ANT_GNSS
/SHDN
GND
RFIN
GND
RFOUT
VCC
VDD_2V85
MCU_GPIO
100pF
6.8nH
220nF
33pF
51K
NM
NM
56pF
D1
Figure 35: Reference Circuit of GNSS Passive Antenna