Product Info

RF matching diagram
BLE antenna (U8) is chip antenna for BLE, and its RF trace is 50ohm strip-line from module to
antenna. C2 and L4 are BLE antenna matching components.
Ipex connector(U10) is for NFC antenna, and RF trace NFC1 has to be close to NFC2. C106 and C107
are NFC antenna matching components. C105 and C108 are the RF filter for reducing BLE harmonic.
Lora antenna(ANT1) is primary antenna and carries TX and RX signals. Total RF path in Lora is 50ohm
strip-line from module to antenna. L3 and C4 are Lora antenna matching components.