Electrical and Electronic Engineering, Artificial Intelligence
26
Scopus Publications
Scopus Publications
Optimal microstrip MIMO antenna design: an optimisation-based approach Shaktimayee Mishra, Asit Kumar Panda, Arun Agarwal International Journal of Autonomous and Adaptive Communications Systems, 2025 The multiple-input and multiple-output (MIMO) antenna is one of 5G's most intriguing characteristics. Data transfer rates can be improved thanks to MIMO technology, which also offers multi-method fading resistance. Across a wide range of uses, this technology has shown its capacity to increase transmission spectrum efficiency. For that reason, we have developed an optimal design technique for microstrip MIMO antenna, in this study, the antenna design parameters were chosen with the best consideration using modified shark smell optimisation (MSSO). Our proposed MSSO is a reliable and less vulnerable optimisation, which increases the antenna's gain and effectiveness by choosing the optimal design parameters. Further to enhance the accuracy of our optimal design technique, we have used Cauchy's mutation in our work. The measured and simulated results were compared with the traditional algorithms, which show that our suggested MSSO-based design technique provides better results in terms of antenna gain and so on.
Microstrip MIMO antenna design with self-improved optimisation strategy Shaktimayee Mishra, Asit Kumar Panda, Arun Agarwal International Journal of Wireless and Mobile Computing, 2024 To increase the channel's capacity and communication dependability, Multiple Input Multiple Output (MIMO) antennas are widely used on both the receiver and transmitter sides of interaction networks. One strategy is to place radiating parts far away, which will result in enormous antennas. These systems' channel capacity is influenced by the transmission bandwidth, S/N ratio, and the characteristics of the antennas being utilised, among other factors. In this work, MIMO microstrip antenna design with optimisation tactic is modelled. Here, Cartesian Distance Estimated Mayfly Optimisation (CDE-MFO) is implemented to resolve the optimisation issues by considering the constraints like area (length, width), gain, beam width, antenna efficiency, envelope correlation coefficient (ECC), total active reflection coefficient (TARC) and directivity. Our findings demonstrate that channel capacity and performance for a wireless MIMO channel can be enhanced by increasing the number of sending and receiving antennas.
An ultrathin triple-band absorber for tuneable THz bio-sensing Laxmi Narayana Deekonda, Sanjay K. Sahu, Asit Kumar Panda, Ratnesh Ranjan, Shelej Khera Microwave and Optical Technology Letters, 2023 In this paper, a multimode terahertz absorber is implemented using an ultrathin silicon ring with varying multimodal resonance. The rectangular silicon ring is providing three resonances with creating electromagnetic dipoles. The altering of these resonances is explicitly controlled with the help of a circular graphene ring. The graphene ring is used in the centre for tenability and to achieve perfect absorption. An equivalent circuit model is also presented and verified for the proposed structure. The design is intended to measure the glucose percentage in water. In addition, this can be used as a biosensor for the detection of malaria parasite percentage in water. A few important parameters like sensitivity and quality factors are considered to evaluate the performance of the said design. The sensitivity with analyte thickness is found to be 0.445 THz TU−1, 0.4255 THz TU−1, and 0.4305 THz TU−1. The corresponding quality factor is noted for the lower, middle, and upper bands as 235, 653, and 264 respectively. Further, the sensitivity and quality factors were measured just by changing the refractive index. The new estimated values are 0.480 THz RIU−1, 0.403 THz RIU−1, and 0.562 THz RIU−1 and corresponding quality factors are 203, 555, and 261 for lower, middle, and upper bands respectively. The design is also expected to flourish as a polarization‐insensitive absorber.
CSRR Embedded CPW Band-Stop Filter Asit K. Panda, Malabika Pattnaik, Rajanikanta Swain IETE Journal of Research, 2022 This paper proposes topologies for narrowband and broadband notch filters using complementary split ring resonators (CSRR) in coplanar waveguide (CPW) technology. Simple analysis justifies these topologies. Strong coupling between the resonator and the signal line in these topologies can reduce the radiation loss in the stop-bands. Characteristics of these filters realized from electromagnetic simulations match closely with those from measurements on prototypes.
A Graphene-Based Broadband Metamaterial Absorber Laxmi Narayana Deekonda, Sanjay Kumar Sahu, Asit Kumar Panda 2021 Advanced Communication Technologies and Signal Processing Acts 2021, 2021 This paper presents a broadband terahertz (THz) metamaterial absorber. The unit cell structure of this absorber consists of three layers. The top layer of the structure contains a circular graphene ring. At the center frequency of 2THz, this circular graphene ring has a fractional bandwidth of 67% and absorptivity of more than 90%. The proposed absorber is polarization insensitive because of its fourfold symmetrical structure. The graphene parameter is optimized to get maximum bandwidth. This metamaterial offers TE and TM polarization insensitive up to a 60° incident angle of electro-magnetic wave.
Low-loss ultra-wideband beam switching metasurface antenna in X-band Rajanikanta Swain, Deepak Kumar Naik, Asit Kumar Panda Iet Microwaves Antennas and Propagation, 2020 This study proposes an ultra-wideband (UWB) metasurface-based beam-switching antenna system. A coplanar (CP) waveguide fed slot antenna (with 49% operating bandwidth) is coupled with a hexagonal metallic aperture to generate CP beam in the 10.2–10.8 GHz band. An octagonal split ring inclusion-based meta-element is designed to achieve 2π transmission phase variation with near-unity magnitude. The principle of the Pancharatnam–Berry metasurface is used to design an offset metasurface superstrate for tilting the main beam of the UWB antenna for the CP band. Measured results (S 11, axial ratio, and radiation pattern) agree well with full-wave simulations. The fabricated X-band UWB aperture coupled antenna system uses the metasurface superstrate to achieve a broadside beam for the lower band and tilted beam for the upper band. This antenna system holds promise for next-generation vehicular and satellite communication applications.
Modeling Simulation of 2-D Metamaterial Reflector Lens Antenna for Radio Astronomy Asit K. Panda 2020 Ursi Regional Conference on Radio Science Ursi Rcrs 2020 Proceedings, 2020 This work is dealing with the principle of modelling a 2-D metamaterial reflector lens antenna used as a communication device. The lens antenna is consisting of low loss with wideband E-shaped metamaterial resonators (ESR) and the parabolic reflector. The metamaterial structure shows a negative refractive index (NRI) behaviour to a normally incident wave. The numerical simulation has been carried out using CST microwave studio (MWS) 3-D simulator. The main idea of this present work is to investigate the focusing effect of the planar metamaterial lens and to enhance the radiation pattern by reducing the sidelobe levels and increasing the main lobe level. The simulated results of both far-field and near-field radiation patterns in wider bandwidth, showing high directivity and gain upto 18dBi is achieved.
