Work

Low-profile dielectric grooved GRIN lens for broadband millimeter-wave applications

Year: 2024

Type: article

Abstract: Microwave lenses are utilized at millimeter waves to ensure high-gain and narrow-beamwidth radiation patterns. This paper proposes full-dielectric grooved graded-index (GRIN) lenses with an improved effective permittivity profile of the lens. The proposed grooved GRIN lenses combine changes in the lens geometry with the stepped effective permittivity profile to better approximate the theoretical permittivity profile of the lens. A prototype GRIN lens has been designed, fabricated, and measured. The designed lens has diameter and thickness equal to 72 mm and 19.04 mm (5.3 λ 0 , 1.4 λ 0 at the center frequency of 22 GHz), respectively. The lens covers the entire K-band (18–26.5 GHz) with aperture efficiency better than 44%. Moreover, it achieves the maximum gain and aperture efficiency of 23 dBi and 64%, respectively.

Source: AEU - International Journal of Electronics and Communications

DOI: 10.1016/j.aeue.2024.155548

Authors: Andrzej Dudek, Slawomir Gruszczynski, Krzysztof Wincza

Institution: AGH University of Krakow

Language: English

Topic: Antenna Design and Analysis

Subfield: Aerospace Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,090

Funder: Narodowe Centrum Nauki