HUY TRINH , Le

This paper presents the deployment of a Low Power Wide Area Network (LPWAN) in Danang city. The different steps from the preliminary test to the full network deployment are reported. Interference issues with mobile phone network is also discussed. The different method and materialused to assess network performances are also reported.

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This paper presents the research about the influence of terrestrial antenna orientation on satellite communication links. The measurements are realized by using a combination of custom hardware, the TinyGS server, and the Grafana display platform. The results of the experiments could be processed and analyzed to provide some suggestions in...

A dual-mode antenna structure with the capability to generate a wide beam RHCP pattern or an omni-directional radiation pattern with a vertical polarization is proposed at 910MHz . The structure suits perfectly to future hybrid IoT terminal compatible with terrestrial and space network.

Development of fast, accurate, mobile and low-cost tools for food analysis is an important topic to mitigate food-borne diseases. In this paper, a portable sensors based on S11 and S21 of compact circularly polarized antennas is proposed. A low-cost and portable VNA analyser is used to perform measurement and analysis. Fruits are used to assess...

In this paper, the use of a three element solution is studied for Internet of Things (IoT) communication from space using Low-Earth Orbit (LEO) satellite. A compact circularly polarized and wide beam-width radiation pattern performance is desired. Impact of miniaturization on frequency bandwidth and peak gain is studied. Simulation results show...