LoRa/LoRaWAN tutorial 18: LoRa Chips
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This is part 18 of the LoRa/LoRaWAN tutorial.
In this video series different topics will be explained which will help you to understand LoRa/LoRaWAN.
It is recommended to watch each video sequentially as I may refer to certain LoRa/LoRaWAN topics explained earlier.
In this video I will discuss the different LoRa chips.
LoRa chips can be divided into two types:
Chips which are used in gateways.
Chips which are used in end nodes.
Semtech owns the LoRa Intellectual Property (IP), but has licensed the IP to other chip manufacturers like Microchip, STMicroelectronics and HopeRF.
LoRa chips used in end nodes can be found at:
https://www.semtech.com/lora/lora-pro...
Every LoRa gateway has the following two components:
A processor, for example to demodulate a signal.
One or two TX/RX radio’s.
A LoRa gateway using SX1301 or SX1308 chip, supports up 10000 end nodes and it has 10 programmable reception channels.
The SX1301 or SX1308 chip can:
Scan all 8 channels (0-7) simultaneously for preambles of all data rates.
Demodulate simultaneously up to 8 packets, for example:
1. SF7 packet on channel 0
2. SF12 packet on channel 7
:
4. SF11 packet on channel 6
8. SF8 packet on channel 5
Note: It can not do both preamble detection and demodulation process at the same time.
LoRa chips used in gateways can be found at:
https://www.semtech.com/lora/lora-pro...
The company HopeRF made several LoRa compatible chips.
These chips are RFM95/96/98(W)
More information see:
http://www.hoperf.com/upload/rf/RFM95...
http://www.hoperf.com/rf_transceiver/...
These chips can be found in many LoRa modules and can be purchased at Chinese webshops.
HopeRF compatible LoRa chips used in end nodes can be found at:
http://www.hoperf.com/rf_transceiver/...
Note:
The marking “W” means CE/FCC version for overseas market and without “W” are meant for Chinese market.
Check out all my other LoRa/LoRaWAN tutorial videos:
• LoRa/LoRaWAN tutorials
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/ @mobilefish
The presentation used in this video tutorial can be found at:
https://www.mobilefish.com/developer/...
#mobilefish #lora #lorawan
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