Research Projects

Sixth-generation wireless communication technology (6G) will have significant advancements in communication, sensing, imaging, presence technologies and location awareness. The ongoing development of 6G technology has introduced advanced features such as Reconfigurable Intelligent Surfaces, non-terrestrial networks, and multiple antenna techniques such as Massive-MIMO, which offers higher data rates, improved reliability, and enhanced coverage. The use of multiple antennas at the transmitter and receiver ends of a wireless communication system can significantly enhance data rates, coverage, and provide reduced interference with other users and devices. Massive-MIMO technology has become a key feature of 6G wireless systems due to its ability to improve data rates, high spectral efficiency, enabling new use cases and better system performance. It exploits the spatial dimension of the radio channel to improve data rates and system performance. In 6G, the performance of massive-MIMO system will be further enhanced by the use of reconfigurable intelligent surfaces. Reconfigurable Intelligent Surfaces (RIS) is one of the key enabling technology of the 6G networks. It offers enhanced signal coverage, improved energy efficiency, and reduced deployment complexity and cost. It is achieved by intelligently manipulating RF waves, effectively reshaping the wireless environment to optimize signal transmission and reception. In this project, the study of the MIMO antenna performance in presence of RIS metasurfaces will be also carried out. Circularly polarized MIMO DRA antennas are a promising solution for the rapidly evolving advanced 5G and future 6G wireless networks. The main advantage of these antennas is that they are capable of providing high radiation efficiency, high gain, and producing circularly polarized signals, which are more robust and less prone to signal distortion due to the polarization mismatch that can occur when signals encounter various obstacles in the wireless environment. Circular polarization has several advantages over linear polarization. One of the primary benefits is that circularly polarized signals are less susceptible to the effects of multipath fading, which occurs when a signal takes multiple paths to reach the receiver. Multipath fading can cause signal distortion and reduced signal strength, but circular polarization can help mitigate these effects. Another advantage of circular polarization is that it provides better coverage in areas with obstructions or reflections, such as urban environments or indoor spaces. This is because circularly polarized signals can penetrate obstacles more effectively than linearly polarized signals. The combination of circular polarization and MIMO technology can provide several benefits for 6G wireless applications. Circularly polarized massive-MIMO antennas can increase the data rate and throughput of wireless networks by reducing the effects of multipath fading and improving signal quality. Additionally, these antennas can provide better coverage and penetration in urban and indoor environments, which is crucial for the success of 6G networks. The aim of this proposal is to fabricate and characterize RIS integrated circularly polarized Dielectric Resonator Antenna (DRA) based MIMO systems for advanced 5G and 6G wireless applications. The scientific objectives of the proposals are fabrication and measurement of MIMO dielectric resonator antennas (DRAs) for sub-24GHz of 6G frequency bands and also prototype development of circularly polarized MIMO DRAs for sub-24GHz of 6G spectrum. Finally, we will design and fabricate a passive reconfigurable intelligent surfaces (RIS) for sub-24GHz bands and evaluate the performance of circularly polarized MIMO DRAs in presence of RIS metasurfaces.