User's Manual

LTE Module Series
EC25Hardware Design
EC25_Hardware_DesignConfidential / Released 61 / 90
B7 2500~2570 2620~2690 MHz
B8 (900) 880~915 925~960 MHz
B12 699~716 729~746 MHz
B13 777~787 746~756 MHz
B18 815~830 860~875 MHz
B19 830~845 875~890 MHz
B20 832~862 791~821 MHz
B26 814~849 859~894 MHz
B28 703~748 758~803 MHz
B38 2570~2620 2570~2620 MHz
B40 2300~2400 2300~2400 MHz
B41 2555~2655 2555~2655 MHz
5.1.3. Reference Design of RF Antenna Interface
Areference design of ANT_MAIN and ANT_DIVantenna pads is shown as below. It should reserve a
π-type matching circuit for better RF performance. The capacitors are not mounted by default.
Figure 31: Reference Circuit of RF Antenna Interface