LoRa/LoRaWAN tutorial 9: EIRP and ERP скачать в хорошем качестве

LoRa/LoRaWAN tutorial 9: EIRP and ERP

If you like this video and want to support me, go this page for my donation Paypal or crypto addresses:    / mobilefish   This is part 9 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 explain what EIRP and ERP are. The Effective Isotropic Radiated Power (EIRP) is the total power radiated by a hypothetical isotropic antenna in a single direction. The Effective Radiated Power (ERP) is the total power radiated by an actual antenna relative to a half-wave dipole rather than a theoretical isotropic antenna. EIRP = Tx power (dBm) + antenna gain (dBi) - cable loss (dBm) For example: EIRP = 20 + 10 - 5 = 25 dBm ERP = Tx power (dBm) + antenna gain (dBd) - cable loss (dBm) For example: ERP = 20 + 7.85 - 5 = 22.85 dBm Relationship EIRP and ERP: EIRP (dBm) = ERP (dBm) + 2.15 What is the purpose of ERP and EIRP? RF transmitting systems must adhere to certain rules set by the regulatory bodies such as FCC or ETSI. One of these rules: radio devices must not exceed certain ERP or EIRP values set by these regulatory bodies. Check out all my other LoRa/LoRaWAN tutorial videos:    • LoRa/LoRaWAN tutorials   Subscribe to my YouTube channel:    / @mobilefish   The presentation used in this video tutorial can be found at: https://www.mobilefish.com/developer/... #mobilefish #lora #lorawan