Rf Antenna Reference Design - Quectel BC66 Hardware Design

B13
B17
B18
B19
B20
B25
B26*
B28
B66
NOTE
"*" means under development.

4.3. RF Antenna Reference Design

BC66 provides an RF antenna pad for external NB-IoT antenna connection.
 The RF trace on host PCB connected to the module's RF antenna pad should be coplanar
waveguide or microstrip, whose characteristic impedance should be close to 50Ω.

BC66 comes with ground pads which are next to the antenna pad in order to give a better grounding.
 In order to achieve better RF performance, it is recommended to reserve a π type matching circuit
and place the π-type matching components (R1/C1/C2) as close to the antenna as possible. By
default, the capacitors (C1/C2) are not mounted and a 0Ω resistor is mounted on R1.
A reference design of the RF interface is shown as below.
BC66_Hardware_Design
746MHz~756MHz
734MHz~746MHz
860MHz~875MHz
875MHz~890MHz
791MHz~821MHz
1930MHz~1995MHz
859MHz~894MHz
758MHz~803MHz
2110MHz~2200MHz
NB-IoT Module Series
BC66 Hardware Design
777MHz~787MHz
704MHz~716MHz
815MHz~830MHz
830MHz~845MHz
832MHz~862MHz
1850MHz~1915MHz
814MHz~849MHz
703MHz~748MHz
1710MHz~1780MHz
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