Dielectric Resonator Antennas


Richtmyer in his seminal work of 1939, has theoretically proven that the DR placed in the open environment, must radiate into free space. This fact provided the foundation for the development of DRAs and in 1983, the first systematic study on the cylindrical DRA was conducted. Dielectric resonator antennas (DRAs) as compared to conventional microstrip antennas have shown potential characteristics such as small size, relatively larger bandwidth, high radiation efficiency (due to negligible conductor loss and surface wave generation), ease of excitation. Being a volumetric radiator (3D structure), the DR structure provides more flexibility and degrees of freedom to design the antenna with specific requirements. More interestingly, the possibility of excitation of multiple orthogonal modes in a single DR can be used to design multiple decoupled antenna ports to realize MIMO/diversity system without the requirement of multi antenna elements. 

In this particular domain, I have investigated various non-canonical configurations of the DRAs for both wideband and multi-band functionalities. The designs have also been utilized for the implementation of 2 and 4-element Multiple-Input Multiple-Output (MIMO) configurations, which aim to achieve spatial and polarization diversity. Additionally, co-radiator design has been investigated realize a compact and low-profile diversity DRA.

Publications


Millimeter-Wave Quad-Port Multiple-Input Multiple-Output Dielectric Resonator Antenna Excited Differentially by TE 20 Mode Substrate Integrated Waveguide


Abhishek Sharma, Anirban Sarkar, Animesh Biswas, M Jaleel Akhtar

2019 URSI Asia-Pacific Radio Science Conference (AP-RASC), IEEE, 2019, pp. 1--4


Differentially-Driven Dielectric Resonator Antenna using TE 20 Mode Substrate Integrated Waveguide


Abhishek Sharma, Anirban Sarkar, Animesh Biswas, MJ Akhtar

2018 International Symposium on Antennas and Propagation (ISAP), IEEE, 2018, pp. 1--2


Dual-band multiple-input multiple-output antenna based on half split cylindrical dielectric resonator


Abhishek Sharma, Anirban Sarkar, Animesh Biswas, M Jaleel Akhtar

Journal of Electromagnetic Waves and Applications, vol. 32, Taylor \& Francis, 2018, pp. 1152--1163


Substrate integrated waveguide fed dual-frequency dual-linearly-polarized dielectric resonator antenna


Abhishek Sharma, Anirban Sarkar, Animesh Biswas, M Jaleel Akhtar

International Journal of Microwave and Wireless Technologies, vol. 10, Cambridge University Press, 2018, pp. 505--511


A-shaped wideband dielectric resonator antenna for wireless communication systems and its MIMO implementation


Abhishek Sharma, Anirban Sarkar, Animesh Biswas, M Jaleel Akhtar

International Journal of RF and Microwave Computer-Aided Engineering, vol. 28, 2018, pp. e21402


Compact dual-band hybrid dielectric resonator antenna loaded with magnetic-LC resonator


Abhishek Sharma, Anirban Sarkar, Animesh Biswas, M Jaleel Akhtar

Journal of Electromagnetic Waves and Applications, vol. 32, Taylor \& Francis, 2018, pp. 1298--1305


Equilateral triangular dielectric resonator based co-radiator MIMO antennas with dual-polarisation


Abhishek Sharma, Anirban Sarkar, Animesh Biswas, Mohammad Jaleel Akhtar

IET Microwaves, Antennas \& Propagation, vol. 12, The Institution of Engineering and Technology, 2018, pp. 2161--2166


Substrate integrated waveguide fed circularly polarized elliptical dielectric resonator antenna array


Jyoti Roat, Abhishek Sharma, Animesh Biswas, MJ Akhtar

2017 IEEE International Symposium on Antennas and Propagation \& USNC/URSI National Radio Science Meeting, IEEE, 2017, pp. 1529--1530


Wideband stacked maltese cross-shaped DR antenna for WiMAX and WLAN applications


Abhishek Sharma, Animesh Biswas

IET Microwaves, Antennas \& Propagation, vol. 11, IET, 2017, pp. 247--252


Wideband multiple-input--multiple-output dielectric resonator antenna


Abhishek Sharma, Animesh Biswas

IET Microwaves, Antennas \& Propagation, vol. 11, The Institution of Engineering and Technology, 2017, pp. 496--502


SIW fed MIMO DRA for future 5G applications


Abhishek Sharma, Anirban Sarkar, Moitreya Adhikary, Animesh Biswas, MJ Akhtar

2017 IEEE International Symposium on Antennas and Propagation \& USNC/URSI National Radio Science Meeting, IEEE, 2017, pp. 1763--1764


Dual-polarized dielectric resonator antenna excited in HEM\(_12\delta \) mode with enhanced port-to-port isolation


Abhishek Sharma, Anirban Sarkar, Animesh Biswas, M Jaleel Akhtar

2017 IEEE Applied Electromagnetics Conference (AEMC), IEEE, 2017, pp. 1--2


A \(\pm45°\) dual-polarized equilateral triangular dielectric resonator antenna


Abhishek Sharma, Anirban Sarkar, Animesh Biswas, M Jaleel Akhtar

2017 IEEE Applied Electromagnetics Conference (AEMC), IEEE, 2017, pp. 1--2


DRA with rat-race hybrid fed phemt differential lna for X-band receiver front-end application


Sistla Srikanth, Moitreya Adhikary, Abhishek Sharma, Prasun Chongder, Anirban Sarkar, Animesh Biswas, Mohammad Jaleel Akhtar

2017 IEEE International Symposium on Antennas and Propagation \& USNC/URSI National Radio Science Meeting, IEEE, 2017, pp. 2361--2362


Dielectric resonator based pattern reconfigurable antenna


Kranti Kumar Katare, Abhishek Sharma, Animesh Biswas

2016 Asia-Pacific Microwave Conference (APMC), IEEE, 2016, pp. 1--4


A polarization diversity substrate integrated waveguide fed rectangular dielectric resonator antenna


Abhishek Sharma, Anirban Sarkar, Animesh Biswas, Robin Sloan, Zhirun Hu

2016 Asia-Pacific Microwave Conference (APMC), IEEE, 2016, pp. 1--4


A high gain aperture coupled cylindrical dielectric resonator antenna with metamaterial superstrate


Mruthyunjaya Warad, Abhishek Sharma, Chandra Shekhar Prasad, Animesh Biswas

2016 IEEE International Symposium on Antennas and Propagation (APSURSI), IEEE, 2016, pp. 133--134


Wideband omnidirectinal perforated minkowski fractal dielectric resonator antenna


Abhishek Sharma, Animesh Biswas

2015 IEEE Applied Electromagnetics Conference (AEMC), IEEE, 2015, pp. 1--2


Dual-frequency half split cylindrical dielectric resonator antenna


Abhishek Sharma, Animesh Biswas

2015 IEEE Applied Electromagnetics Conference (AEMC), IEEE, 2015, pp. 1--2


Dielectric resonator loaded substrate integrated waveguide cavity backed slot antenna for bandwidth enhancement


Abhishek Sharma, Soumava Mukherjee, Animesh Biswas

2015 IEEE International Symposium on Antennas and Propagation \& USNC/URSI National Radio Science Meeting, IEEE, 2015, pp. 2337--2338



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