Super-Strate Based Rectangular Dielectric Resonator Antenna for Enhancing Spectrum Usage Kamran Ashraf, Sovan Mohanty, Baibaswata Mohapatra International Conference on Microwave Antenna and Communication Mac 2023, 2023 Wireless communication and information technology are transforming the current industries by facilitating ultra-reliable and diversified services to connect almost everything to a common network for multifold applications. The impossible mission looks possible with the advent of new dielectric materials and precision 3D printing machines. This paper proposes a superstrate-based rectangular dielectric resonator antenna beyond 6 GHz for enhancing spectrum usage to mitigate future unusual spectrum requirements. The performance of the rectangular dielectric resonator antenna is optimized by bringing the effect of mutual coupling through the correct positioning and shielding of the superstrate. The proposed antenna operates from 7 GHz to 7.55 GHz with a maximum S11 of −20.2 dB and impedance bandwidth of 7.56%. This antenna focuses its beam in the broadside direction with a stable gain of around 6 dB. A simulated comparative analysis of RDRA with super-strate and without superstrate summarizes various antenna parameters.
Design of micro-strip Fed aperture coupled broadside cylindrical dielectric resonator antennaarray Planar Antenna Design Fabrication Testing and Application, 2021
Analysis of Cylindrical Dielectric Resonator Antenna with Modified Micro-Strip Alina Khan, Sovan Mohanty 2020 International Conference on Contemporary Computing and Applications Ic3a 2020, 2020 This paper provides a comparative analysis of cylindrical dielectric resonator antenna with simple micro-strip feed to that of a modified micro-strip feed. The fundamental radiator is having a radius of 5.96 mm and height of 9.82 mm with relative permittivity εr of 10. It is placed over a substrate having dimension 40×40×0.785 mm3 with εr equal to 2.5. The substrate is embedded with an infinite ground plane to reduce the physical height of the antenna according to image theory. Two types of micro-strip feeding mechanisms are being experimented. The simplified micro-strip feed radiator resonates at 5.7 GHz with impedance bandwidth of 14.03%. The modified micro-strip feed with an added stub resonates at 10.65 GHz & 13.5 GHz with impedance bandwidth of 21.596% & 13.33% respectively. Matching profile, directive gain and efficiency can be enhanced by almost 10% by modifying simple micro-strip feed to micro-strip feed with stub structure of proposed antenna.
Performance analysis of efficient and low complexity MIMO-OFDM using STBC and V-BLAST Brijesh Kumar Yadav, Rabinder Kumar Singh, Sovan Mohanty International Conference on Emerging Trends in Electrical Electronics and Sustainable Energy Systems Iceteeses 2016, 2016 This paper presents the performance of V-BLAST and STBC on MIMO-OFDM.V-BLAST is superior in terms of spectral efficiency and bit error rate. The performance analysis of V-BLAST based multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) system also analyzed with respect to bit error rate per signal to noise ratio (BER/SNR) for various detection techniques i.e. zero forcing (ZF), minimum mean square error (MMSE) and maximum likelihood (ML). A 2×2 MIMO-OFDM system is used for the performance evaluation. The simulation results show that the performance of V-BLAST based detection techniques is superior than to that of conventional methods.