A new technique to enhance the impedance bandwidth of CDRA using drilling holes. - Rakesh Chowdhury; Rajkishor Kumar; Raghvendra Kumar Chaudhary (ICIIS, 2016)

Wideband circularly polarized cubical DRA excited with conformal-strip for wireless applications. - Rajkishor Kumar; Raghvendra Kumar Chaudhary (ICIIS, 2016)

Dual Triangular-shaped DRA Excited with Asymmetric Slot Coupled for Wideband Circular Polarization Applications. - Rajkishor Kumar; Arvind Kumar; Avinash Chandra; Naveen Mishra; Kundan Kumar; Raghvendra Kumar Chaudhary (APCC, 2022)

Compact planar magneto-electric dipole-like circularly polarized antenna. - Arvind Kumar; Ayman Abdulhadi Althuwayb; Divya Chaturvedi; Rajkishor Kumar; Farnaz Ahmadfard (IET Commun., 2022)

Generation of Broadband Optical Frequency Comb by Interfering Dual Lasers in Electro-Optic Modulators. - Ujjwal; Rajkishor Kumar; Radhakrishna Bhat (IEEE Access, 2023)

Development of wideband CPW-fed hexagon-shaped circularly polarized slot antenna for wireless-communications. - Avinash Chandra; Rajkishor Kumar (Int. J. Commun. Syst., 2023)

Implementation of Phased Array Antenna based on Multilayer fed with Substrate Integrated Waveguide Technology for Beam Scanning Applications. - Rajkishor Kumar; Sarthak Varshney; Shruti Bhandari; Diksha Singhal; Mahira Khan; Saanvi Srivastava (WPMC, 2024)

CRLH-TL-loaded metamaterial antenna with frequency band and polarization reconfigurability. - Kalyanbrata Ghosh; Avinash Chandra; Rajkishor Kumar; Arpan Shah; Ujjal Chakraborty (Int. J. Commun. Syst., 2024)