Design of Compact LoRa Devices for Smart Building Applications

  • Sérgio I. LopesEmail author
  • Felisberto Pereira
  • José M. N. Vieira
  • Nuno B. Carvalho
  • António Curado
Conference paper
Part of the Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering book series (LNICST, volume 269)


The use of smart devices in buildings is many times compromised by its form and size. Smart devices are composed of several components including sensors, boards, batteries, processing units, and antennas. However, the form and size of the smart devices are usually limited due to antenna restrictions. In this paper, we propose the architecture of a compact low-cost LoRa smart device designed for easy deployment in smart building applications. The proposed device architecture features a reduced size embedded antenna and an ultra-low-power microcontroller to interface several sensors and actuators. The results obtained have shown that the proposed design can be used for communication, between two compact LoRa devices, in line-of-sight for up to 4.2 km, in urban environments for up to 1.2 km and also for in-building communications for up to 152 m, without compromising the low-power features that LoRa supports.


Green communications LoRa Smart buildings 



This contribution has been developed in the context of the Project “RnMonitor - Online Monitoring Infrastructure and Active Mitigation Strategies for Indoor Radon Gas in Public Buildings on the Northern Region of Portugal (Ref: POCI-01-0145-FEDER-023997)" funded by FEDER (Fundo Europeu de Desenvolvimento Regional) through Operational Programme for Competitiveness and Internationalization (POCI).


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Copyright information

© ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering 2019

Authors and Affiliations

  • Sérgio I. Lopes
    • 1
    • 2
    Email author
  • Felisberto Pereira
    • 3
  • José M. N. Vieira
    • 3
    • 4
  • Nuno B. Carvalho
    • 3
    • 4
  • António Curado
    • 1
    • 5
  1. 1.Instituto Politécnico de Viana do CasteloViana do CasteloPortugal
  2. 2.Instituto de TelecomunicaçõesAveiroPortugal
  3. 3.Instituto de TelecomunicaçõesCampus Universitário de SantiagoAveiroPortugal
  4. 4.DETI, University of Aveiro, Campus Universitário de SantiagoAveiroPortugal
  5. 5.CONSTRUCT LFC, Faculty of Engineering (FEUP), University of PortoPortoPortugal

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