Microstrip Rotman Lens for Mobile Base Station Backbone in Disaster Area Networks

Abstract

Mobile Cognitive Radio Base Station (MCRBS) is a technology to recover network communication temporarily in disaster areas. The communications can be built by constructing the backbone network, where it is formed by connecting multiple MCRBSs with point-to-point radio communication link considering the best routing algorithm. The MCRBS antenna system should has an ability on producing the beam into specific d irection to establish point-to-point radio communication link. However, there is no capable system to support the MCRBS antenna system for directing the beam. Therefore, it requires a system that can assist in focusing the beam of antenna system for the MCRBSs connectivity. In this paper, we propose Rotman Lens that has beamforming capability to support radio backbone communication for multiple MCRBSs connectivity in post-disaster networks. The Rotman Lens is chosen to generate amplitude and phase shift in performing beamforming technique with simultaneous signal transmissions from MCRBS to others without moving the antenna system. In this research, the Rotman Lens was evaluated through a series of computer simulations and laboratory experiments to investigate the lens performance. The final p roposed lens p rovides the e xperiment results for a ll beam ports with a n average value both return l oss and mutual coupling of less than −15 dB and −20 dB, where the magnitude deviation in average value and the maximum error of phase difference are 1.172 dB and 6.014 • , respectively. The proposed Rotman Lens is also confirmed t o be capable of controlling beam with scanning capability of −27 • , −14 • , 0 • , 14 • , 27 • to support wireless communication backbone link among MCRBSs in disaster recovery networks.

Application of IoT Technologies in Seaport Management

“…With collected weather data, the port can fully forecast extreme weather events and take remedial measures from the beginning, avoiding affecting operations. Mobile Cognitive Radio Base Station (MCRBS) was a suggested technique by Prihatiningtyas et al [34] to temporarily restore network connections in disaster zones. This technology will help ensure the flow of information at the seaport in the event of bad weather.…”