LoRa reference design enables full-duplex LoRaWAN gateways

May 04, 2021 // By Rich Pell
LoRa reference design enables full-duplex LoRaWAN gateways
Analog and mixed-signal semiconductor company Semtech has announced a reference design for full-duplex gateway applications enabling LoRaWAN gateways to receive and transmit data simultaneously.

The LoRa Corecell Reference Design is for full-duplex gateway applications in the U.S. 902 - 928 MHz ISM band. The new turnkey gateway solution enables the expansion of network capacity for outdoor and indoor applications, such as smart metering, smart building and smart factory.

In addition, says the company, the reference design enables network owners to increase network capacity while deploying fewer gateways, providing cost savings to end customers when compared to cellular alternatives.

"Semtech first launched the LoRa Corecell Reference Design for full duplex gateway applications (SX1302) for the China 470 - 510 MHz ISM band back in August 2020," says Marc Pegulu, Vice President IoT Product Marketing & Strategy for Semtech’s Wireless and Sensing Products Group. "With this new addition, gateway manufacturers can also leverage Semtech's comprehensive reference designs to produce full duplex gateways for customers in the U.S. As a valuable solution in the LoRa Core portfolio, Semtech's LoRa Corecell Reference Design for full-duplex gateway applications improve LoRaWAN network communications efficiency while expanding the reach and connectivity of LoRa."

Th full-duplex design improves LoRaWAN protocol message response time for applications requiring fast acknowledgement from the gateway, enables Firmware Update Over-The-Air (FUOTA) while processing uplink traffic and reduces the time and cost of operational management of end devices. Full duplex gateways support simultaneous transmit and receive of data, lengthening the downlink window to enable gateways to send more data to end devices and removing the latency experienced with half duplex gateways.

Features of LoRa Corecell Reference Design for full duplex gateway applications include:

  • Full duplex mode
  • 10x power reduction compared to legacy products
  • Transmit power (US915) up to +27 dBm
  • Receive sensitivity (US915) down to:
    • -140.8 dBm at SF12, 125 kHz BW
    • -124.2 dBm at SF7, 125 kHz BW
    • -118.9 dBm at SF5, 125 kHz BW
  • Eight frequency channels
  • 16 125-kHz BW LoRa demodulators
  • One high-speed 125/250/500kHz multi-bandwidth LoRa demodulator
  • (G)FSK demodulator


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