Volume 23, Issue 59, January - June, 2026

Hybrid radome lens structure for gain enhancement and angular radiation control in patch antenna arrays

Shruthi M ¹, Smitha N ², Smitha Gayathri D ³, Kumar Puttaswamy Gowda ⁴, Suguna Guttoor Chickaramanna ⁵

¹Dept of Electronics and Communication Engineering, R N S Institute of Technology, India
²Dept of Electronics and Communication Engineering, R N S Institute of Technology, India
³Dept of Electronics and Communication Engineering, B N M Institute of Technology, India
⁴Dept of Electronics and Communication Engineering, Dayananda Sagar College of Engineering, India
⁵Dept of Electronics and Communication Engineering, JSS Academy of Technical Education, India

ABSTRACT

The work in this study presents the design of a hybrid radome lens structure and its analysis aimed at achieving high gain and improved angular radiation capability. Wide-angle radiation with dome structure usually results in low gain and beam distortion, making it difficult to maintain stable performance at large scan angles. In this work, a dielectric radome lens is designed to increase gain and support better radiation capability. This dome structure is compared with multilayered lens with type-C structure. This study results in improved gain stability, and radiation characteristics which is influenced by radome geometry and material parameters. The variations in geometry of radome and dielectric properties of multilayers results in gain stability and radiation pattern. The proposed dielectric radome lens structure results in scan of 60° as compared to multilayered lens C structure resulted with a scan of 45°. The outcomes indicate that dielectric radome–based lenses provide a promising approach for applications in advanced communication and radar systems with wide angular radiation.

Keywords: Patch Antenna, Array, Single Solid lens, Multilayered lens, Gain, Return Loss.

Indian Journal of Engineering, 2026, 23(59), e7ije1713

PDF

DOI: https://doi.org/10.54905/disssi.v23i59.e7ije1713

Published: 07 May 2026