학술논문
Wideband Low-RCS Step-Type Cavity-Backed Stacked Dielectric Resonator Antenna for Unmanned Aerial Vehicle Communications
Document Type
Periodical
Author
Source
IEEE Antennas and Wireless Propagation Letters Antennas Wirel. Propag. Lett. Antennas and Wireless Propagation Letters, IEEE. 22(9):2170-2174 Sep, 2023
Subject
Language
ISSN
1536-1225
1548-5757
1548-5757
Abstract
This letter explains the design of a cavity-backed stacked dielectric resonator antenna (SDRA) with wider impedance bandwidth (IBW) and improved gain for S -band and C -band applications. The antenna mainly comprises of four dielectric resonators stacked above one another of varying size and shape. Combining the SDRA with step-type cavity and conformal radome forms the final antenna. The antenna provides a wider IBW of 103% (2.07–6.55 GHz) and dual-band axial ratio bandwidth of 27.90% (2.38–3.15 GHz) and 16% (5.01–5.88 GHz), respectively. The antenna provides a maximum gain of 9 dBi. The final cavity-backed antenna offers good radar cross-sectional reduction ranging from 2 to 8 GHz for both normal and oblique incidence angles. Hence, the proposed SDRA with the dual-layer cavity is applicable for unmanned aerial vehicle communications.