Research HIGHLIGHTS of iDARE LABORATORY, ECE, IISC BANGALORE

We are  carrying out computational EM analysis of automotive MIMO Radars, both in terms of antenna design and vehicle integration aspects. Few modified binomially tapered series-fed microstrip patch arrays are proposed from his group for MIMO Radar applications. Furthermore, analysis of co-located MIMO Radar antennas after integration behind vehicle structures like bumpers are carried out using efficient computational electromagnetic techniques. 

Journal:

• Ananya Mukherjee and Debdeep Sarkar, "Compact MIMO Radar of Improved Angular Resolution using Interleaved Array Geometry," IEEE Transactions on Vehicular Technology, vol. 73, no. 5, pp. 6158-6170, 2024. 

Book Chapter:

• Jogesh Chandra Dash and Debdeep Sarkar, Antennas for mm-wave MIMO RADAR: Design and Integration Challenges for Automotive Application, Handbook of Metrology and Application, © Springer Nature Singapore Pte Ltd. 2022, D. K. Aswal et al. (eds.), DOI: https://doi.org/10.1007/978-981-19-1550-5_82-1. 

Conference:

• Ananya R Bhat, Yasha Mandawat, Mahesh Appajappa and Debdeep Sarkar, "MIMO Antenna Performance Analysis With Realistic Bumper for Automotive Application," IEEE Microwave, Antennas, and Propagation Conference (MAPCON), Hyderabad, India, December 9-13, 2024. 

• Ashish Kumar Patro, Amrit Prasad Behera, Jogesh Chandra Dash and Debdeep Sarkar, "Series-Fed Binomial Tapered Microstrip Antenna With Low Side Lobe Level for Automotive MIMO RADAR Applications," IEEE Microwave, Antennas, and Propagation Conference (MAPCON), Hyderabad, India, December 9-13, 2024. 

• Ananya Mukherjee and Debdeep Sarkar, "Interleaved MIMO Radar for Marine Target Tracking Applications," URSI Atlantic Radio Science Conference (URSI AT-RASC), Gran Canaria, Spain, 19 – 24 May 2024. 

• Ananya Mukherjee and Debdeep Sarkar, "Transparent Binomially Tapered Series-Fed Patch Array With Circular Polarization for Space Surveillance and Tracking MIMO Radar," Microwave, Antennas, and Propagation Conference (MAPCON), Ahmedabad, Gujarat, India, December 10-14, 2023.  

• Jogesh Chandra Dash, Debdeep Sarkar, Yahia M. M. Antar, "Design of Series-Fed Antenna Array with Low SideLobe Level and Improved Azimuth Fied-of-View for Automotive RADAR Application,'' XXXVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), Sapporo, Japan, pp. 1-4, 2023. 

• Jogesh Chandra Dash and Debdeep Sarkar, "Antenna Array Ambiguity Function Based Study of Integration Effect on a 2D Automotive MIMO RADAR Antenna Placed Behind a Painted Bumper," URSI Regional Conference on Radio Science (RCRS), IIT Indore, India, 2022. 

• Jogesh Chandra Dash, Debdeep Sarkar and Yahia M. M. Antar, "Design of a 2D MIMO RADAR Antenna for 77 GHz Automotive Application," IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Denver, Colorado, USA, 10-15 July, 2022. 

• Jogesh Chandra Dash, Debdeep Sarkar and Yahia M. M. Antar, "Effect of Painted Bumper on Automotive MIMO RADAR Performance Study Using Bi-directional Loss and Antenna Array Ambiguity Function," IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Denver, Colorado, USA, 10-15 July, 2022.  

• Jogesh Chandra Dash and Debdeep Sarkar, "Impacts on Automotive MIMO RADAR Performance Due to Permittivity Variation of Bumper Material: Insights Through Bi-Directional Loss and Antenna Array Ambiguity Function," IEEE International Microwave and RF Conference (IMARC), IIT Kanpur, 17-19 December, 2021.

• Jogesh Chandra Dash, Debdeep Sarkar, Yahia M. M. Antar, "Design of Series-fed Patch Array with Modified Binomial Coefficients for MIMO Radar Application," IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, Marina Bay Sands, Singapore, 4-10 December, 2021. 

We are building multi-band microstrip patch antennas using sub-wavelength resonator (e.g., CSRR or complementary split ring resonator) loading, and adopting new techniques for suppressing/reshaping the higher order modes. Such modified multi-band microstrip patch antennas bearing diverse polarization states can be used for building electrically large phased arrays or massive MIMO antenna architectures.  

Journal:

• Debaprasad Barad, Jogesh Chandra Dash, Debdeep Sarkar & P. Srinivasulu, "Dual-band dual-polarized sub-6 GHz phased array antenna with suppressed higher order modes," Scientific Reports (Nature), vol. 14, 6139, 2024. 

Conference:

• Debaprasad Barad and Debdeep Sarkar, "Sub-Arrays Using CSRR Loaded Dual-Band Microstrip Patch Antennas for MIMO and Phased Array Applications in 6G FR3 Band," IEEE Microwave, Antennas, and Propagation Conference (MAPCON), Hyderabad, India, December 9-13, 2024. 

• Debaprasad Barad, Jogesh Chandra Dash, Debdeep Sarkar and P. Srinivasulu, "Mushroom Unit Cell Loaded Triple Band Microstrip Antenna for Sub-6 GHz MIMO and Phased Array Application," IEEE Wireless Antenna and Microwave Symposium (WAMS), Ahmedabad, India, pp. 1-6, 2023. 

• Debaprasad Barad, Jogesh Chandra Dash, Debdeep Sarkar and P. Srinivasulu, "A CSRR Loaded Triple-Band Microstrip Patch Antenna With Suppressed Higher Order Modes for Sub-6 GHz Phased Array Application," IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Bengaluru, India, 2022.  

• Debdeep Sarkar and Yahia Antar, "On the CSRR Loaded Microstrip Patch Antennas: A Class of Metamaterial-Inspired Radiators," IEEE Microwaves, Antennas, and Propagation Conference (MAPCON), Bengaluru, India, 2022.  

• Jogesh Chandra Dash and Debdeep Sarkar, "A Four-Port CSRR-Loaded Dual-Band MIMO Antenna with Suppressed Higher Order Modes," IEEE Access, vol. 10, pp. 30770-30778, 2022. 

We are working on developing computational electromagnetic methods (particularly FDTD based approaches) for analyzing EM wave propagation in time-varying metamaterials and non-reciprocal RF circuits, where the frequency of temporal modulation is significantly high. Such systems can be practically realized by TVTLs (time-varying transmission lines) loaded with PIN/Varactor Diodes. 

Journal:

• Anand Kumar, Jogesh Chandra Dash and Debdeep Sarkar, "Computational Techniques for Design and Analysis of Time-Varying Capacitor loaded Transmission Lines using FDTD and Simulink," IEEE Journal on Multiscale and Multiphysics Computational Techniques, vol. 7, pp. 228-235, 2022.

Book (Monograph):

• Debdeep Sarkar, FDTD Analysis of Guided Electromagnetic Wave Interaction with Time Modulated Dielectric Medium, SpringerBriefs in Electrical and Computer Engineering, Springer Verlag, Singapore, 2022.

Conference:

• Anand Kumar, Zixiao Zhang, Debdeep Sarkar, Symeon Nikolaou, Photos Vryonides, Dimitra Psychogiou, "FDTD Modeling of Non-reciprocal RF Circuits using Modified Telegrapher’s Equations," International Microwave Symposium (IMS), Washington DC, USA, 16-21 June, 2024. 

• Anand Kumar and Debdeep Sarkar, "1D-FDTD Modelling of Space-Time Metamaterials using TVTL-based Equivalent Circuit," URSI Atlantic Radio Science Conference (URSI AT-RASC), Gran Canaria, Spain, 19 – 24 May, 2024. 

• Anand Kumar, Debdeep Sarkar and Dimitra Psychogiou, "FDTD Modelling of RF Circuits Based on Lumped Components and Transmission Lines Using Modified Telegrapher's Equations," 18th European Conference on Antennas and Propagation (EuCAP), Glasgow, Scotland, March 17-22, 2024.  

• Anand Kumar and Debdeep Sarkar, "FDTD Analysis of Space-time Metamaterials using Modulated TVTLs for Frequency Translation, Mixing and Non-reciprocity," 53rd European Microwave Conference (EuMC), Berlin, Germany, pp. 311-314, 2023. 

• Anand Kumar, Jogesh Chandra Dash and Debdeep Sarkar, "FDTD Analysis of Transmission Line Loaded with Time-Varying Shunt Capacitors for Mixer Applications," IEEE International Conference on Electronics, Computing and Communication Technologies (CONECCT), Bangalore, India, 8-10 July, 2022. 

We are building collinearly polarized multi-port microstrip antennas for in-band full-duplex (FD) application, with unique techniques of antenna domain self-interference-cancellation (SIC) between Tx and Rx ports. All the proposed designs are initially designed for V2X (Vehicle to Everything)-ITS (Intelligent Transportation Systems) at sub-6 GHz (IEEE 802.11p) band, but can be scaled for other applications as well. 

Book Chapter:

• Jogesh Chandra Dash and Debdeep Sarkar, Antennas for Full-Duplex Communication: State of the Art and Way Forward, in: Kumar, H., Gopi, E.S. (eds), RF, Microwave and Millimeter Wave Technologies (Signals and Communication Technology), Springer, Cham, 2024. (DOI: 10.1007/978-3-031-62526-8_9)

Journal:

• Jogesh Chandra Dash and Debdeep Sarkar, "A Co-Linearly Polarized Shared Radiator Based Full-Duplex Antenna with High Tx-Rx Isolation using Vias and Stub Loaded Resonator," IEEE Transactions on Circuits and Systems-II: Express Briefs,  vol. 70, no. 7, pp. 2400-2404, 2023. 

• Jogesh Chandra Dash and Debdeep Sarkar, "A Co-Linearly Polarized Full-Duplex Antenna with Extremely High Tx-Rx Isolation," IEEE Antennas and Wireless Propagation Letters (AWPL),  vol. 21, no. 12, pp. 2387-2391, 2022.

• Jogesh Chandra Dash and Debdeep Sarkar, "Microstrip Patch Antenna System with Enhanced Inter-Port Isolation for Full-duplex/MIMO Applications," IEEE Access, vol. 9, pp. 156222-156228, 2021.  

Conference:

• Jogesh Chandra Dash and Debdeep Sarkar, "Experimental Demonstration of SIC in a Co-Linearly Polarised Full-Duplex Antenna for 6G and Its Multi-Element Implementation," IEEE Microwave, Antennas, and Propagation Conference (MAPCON), Hyderabad, India, December 9-13, 2024. 

• Jogesh Chandra Dash and Debdeep Sarkar, "Experimental Demonstration of SI-Cancellation in a Co-Linearly Polarised Shared-Radiator Full-Duplex Antenna for 6G," Microwave, Antennas, and Propagation Conference (MAPCON), Ahmedabad, Gujarat, India, December 10-14, 2023. 

Brief Description:

We are conceptualizing the use of EM Lagrangian density and Poynting vector magnitude to probe into the near-field region of multiple antenna systems in general (specifically electrically large massive MIMO arrays). These studies reveal interesting insights not readily available via traditional techniques like radiation quality factors of antennas.

Relevant Publications:

• Debdeep Sarkar and Yahia M. M. Antar, "On the Near-field Reactive Helicity and Far-field Directivity of Circularly Polarized Antennas," IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Meeting, Florence, Italy, 14-19 July, 2024.

• Debdeep Sarkar, "Insights into the Near-Field Characteristics of mm-wave Massive MIMO Arrays using EM Lagrangian Density and Poynting Vector," 27th International Workshop on Smart Antennas (WSA), Dresden, Germany, March 17-19, 2024. 

• Debdeep Sarkar and Yahia M. M. Antar, "Characterization of Reactive Energy Density in the Antenna Near-Field Using EM Lagrangian Density," Microwave, Antennas, and Propagation Conference (MAPCON), Ahmedabad, Gujarat, India, December 10-14, 2023. 

• Debdeep Sarkar and Yahia M. M. Antar, "Antenna Mutual Coupling in Near-field: Insights using EM Lagrangian Density and Complex Helicity," IEEE Antennas and Wireless Propagation Letters (AWPL), vol. 22, no. 11, pp. 2670-2674, 2023. 

• Debdeep Sarkar and Yahia M. M. Antar, "FDTD Computation of Space/Time Integrated Electromagnetic Lagrangian: New Insights into Design of Mutually Coupled Antennas," IEEE Journal on Multiscale and Multiphysics Computational Techniques, vol. 7, pp. 16-22, 2022.