R. Kumar, S. Sinha, A. Chandra, A. Kumar, and R. K. Chaudhary, “Triple-band metamaterial-inspired antenna for sub-6G applications,” in Metamaterials Science and Technology, Singapore: Springer Nature Singapore, 2026, pp. 1–35. DOI:10.1007/978-981-13-0241-1_23-1
R. Kumar, A. Chandra, Ujjwal, and A. Kumar, “Different feeding networks to generate wideband circular polarization waves in different shapes of dielectric resonators,” in Radio Frequency and Microwave Design for Next Generation Wireless Applications, Boca Raton: CRC Press, 2025, pp. 1–34. DOI: 10.1201/9781003674115-1
Aggarwal V, Kesharwani S, Khosla A, Upadhyay P, Kumar A. A Study on Tunable SIW-Based Self-Diplexing Antenna. In book: Proceedings of Second International Conference on Computational Electronics for Wireless Communications, ICCWC 2022 (pp. 215-225). Springer Nature Singapore. http://dx.doi.org/10.1007/978-981-19-6661-3_20