Block Diagram

Hardware block diagram of RF module(SM-RF920-C1)
VDD_TX(3.5V)
VDD(3.3V)
VDD(3.3V)
HEADER
(J2,J3)
30MHz XTAL/X1
(8Y-30.000MEEQ-T)
RF Transceiver
U2
TX
(Si4463)
VDD_TX(3.5V)
SAW Filter
U1
(B39921B3728U410)
RF PA & Switch
U3
(SKY65364-21)
Low Pass Filter
& Match Circut
Antenna
920.5 ~
923.5Mhz
SMA CON
(J1)
VDD(3.3V)
Board Block Diagram Page
2
/
2
RX
RX Match
Circuit